Monday, January 31, 2011

The repair potential of resin composite materials

Dental Materials Volume 27, Issue 2, Pages e20-e27 (February 2011)


To measure the ‘repair’ strength of various combinations of composite using four manufacturers’ adhesive systems, to compare the bond strengths with the cohesive strength of the original, unrepaired products and to assess whether the chemical nature of the resin matrix influenced the repair strength.
Specimens were prepared of three composite materials Durafill, Heraeus Kulzer; P90 (Silorane) 3M ESPE; Z250 (3M ESPE) and aged in water at 60°C for 1 month. One surface of each specimen was faced with 80-grit silicone carbide paper, one of four adhesives placed (Ecusit, DMG; Clearfil Repair, Kuraray; P90 System Adhesive; Single Bond 2, 3M ESPE) and ‘repair’ composite added of the same type as above, such that all combinations of original and repair composite and adhesive were used. ‘Stick’ samples, approximately 6mm×0.8mm×4mm were prepared from each repair specimen, a neck created at the junction of original and repair composites and the hour-glass sample tested in tension at 1mm/min. The microtensile bond strength of the repair was calculated and the mode of failure (adhesive; cohesive in the original composite; cohesive in the repair composite) recorded.
There was no significant difference between the cohesive strengths of Filtek P90 and Filtek Z250 (both ≈106MPa); both were significantly stronger than Durafill (67.0MPa). For bonding to Durafill the bond strengths ranged from 17.6MPa to 50.9MPa; for bonding to P90, the bond strengths ranged from 5.0MPa to 54.2MPa; for bonding to Z250, the bond strengths ranged from 17.2MPa to 75.4MPa. Clearfil Repair appeared to provide the most consistently high bond strengths, followed by the P90 System Adhesive, Single Bond 2 and Ecusit. Overall, the majority of failures (74%) was adhesive.
It appears that bonding of new dimethacrylate-based composite to old dimethacrylate-based composite can be a viable clinical procedure. However, if the original composite is silorane-based (e.g., P90), then using the silane-based adhesive may be the best repair option, and similarly if it is planned to effect a repair with a silorane-based composite, using a silane-based adhesive may give the best outcome. The null hypotheses are thus rejected.

Saturday, January 29, 2011

Patient Money: Bracing Your Wallet if Your Child Needs Braces

You can see that your child’s bite is misaligned or that his teeth are sticking out in all the wrong places. You know what’s coming: months of treatment and an orthodontist bill anywhere from $3,000 to $7,000. That’s a lot of money.
Read the NY Times article.

Friday, January 28, 2011 Launches Unique Scrubs Photo Contest – a site providing health care education resources – is hosting a photo contest that is open to everyone from students to seasoned professionals. To enter the contest, participants must submit photos of themselves in their creative scrub apparel for a chance to win a $250 gift card.

Foster City, CA (CISION) January 19, 2011 – a portal for health care students and professionals is hosting an exciting photo contest that invites users to submit photos of themselves and their co-workers in their most unique, fun and crazy scrub apparel.  

“No matter if you’re a nursing student or already a professional in the medical field, this is a way to show off how you have fun on the job,” said Michael Sterns, general manager of

The Scrubinator Photo Contest launched January 19, 2011 and will run until April 20, 2011. Each month, two winning pictures will be selected and announced on the official website and across the site’s social media profiles. Winners will receive a $250 gift card to Scrubs and Beyond.

“Everyone in every medical profession is invited to participate. We want to connect with our users in a way that shows off their individuality and personality,” said Sterns.

Details about the "Scrubinator Photo Contest" can be found on the official contest rules page at Users can submit their entries by e-mailing MediSmartQS(at)gmail(dot)com and can see their pictures posted on the Facebook page.

Thursday, January 27, 2011

Live Dental

Live Dental Chat is a Live Chat Staffing Service designed to increase your new patient opportunities!  As you are reading this, there are potential patients browsing your website, looking into your services, and have questions.  That is the good news.  The bad news is statistically 97 out of 100 of them will exit your website if they are not answered quickly.

Providing instant help through Live Dental Chat can drastically reduce the number of these abandoned opportunities.

Live Dental Chat provides a reliable, live presence that guides your patients toward better and more complete answers quickly.  The result, a much higher likelihood that this anonymous website visitor becomes a new patient for you, and not your competition.

Go check it out

Wednesday, January 26, 2011

NevinLabs™ to Unveil the New ErgoEZ™ Bench at 2011 Lab Day Chicago

Ergonomic, Easily Customizable Bench
Designed to Take Dental Laboratories into the Future

Chicago, IL (January 25, 2011) Nevin Laboratories, Inc., a member of DentalEZ® Group, will be unveiling its new ErgoEZ lab bench at this year’s Lab Day Chicago.  The ErgoEZ is an ergonomic lab bench that takes labs into the future.   

The new ErgoEZ bench is available in a wide variety of configurations that enable dental lab owners to create the perfect bench suited to their own specific requirements.  Newly designed to easily adapt to all individual shapes and sizes, the new ergonomic bench offers flexibility for each individual technician, providing optimum comfort and an exclusive work environment. 

The new bench includes many ergonomic features that adjust for an ideal personalized working environment, including a 4” adjustable bench height range and supportive arm boards that are adjustable, removable, and available in a choice of materials and colors.  Moreover, optional solid ½” Corian® tops provide a spacious and highly practical work area. 

Other features include:

  • Individual dust collecting system with shield and magnifying lens
  • Motor control panel with lighted power switch and indicator lights
  • SS scrap drawer
  • Wide variety of drawer and door options for individual needs
  • Gas valve and air blowgun with regulator
  • Optional task lighting
  • Optional Nevin LabPro Handpiece

Please visit NevinLabs at this year’s Lab Day Meeting in Chicago to experience ErgoEZ, the lab bench of the future, or contact NevinLabs at 800-544-5337. 

About NevinLabs

NevinLabs specializes in designing, building, and installing complete dental laboratories and area workstations for dental practices, dental laboratories, vocational schools, universities, and military hospitals and clinics. 

For more information, please visit, or call NevinLabs directly at 800-544-5337. 

About DentalEZ® Group

DentalEZ® Group is committed to advancing the practice of dentistry through innovative products and services.  Encompassing six distinct product brands—StarDental®, DentalEZ®, CustomAir®, RAMVAC®, NevinLabs, and Columbia Dentoform® — DentalEZ® Group manufactures everything in the operatory, from handpieces to chairs to vacuum systems to dental simulation models, creating a complete line of products to elevate the health, comfort, and efficiency of the dental operatory.  For more information, please visit

Tuesday, January 25, 2011

Clinical performance of a hybrid resin composite with and without an intermediate layer of flowable resin composite: A 7-year evaluation

Dental Materials Volume 27, Issue 2, Pages 150-156 (February 2011)


The objective of this prospective clinical follow up was to evaluate the long term clinical performance of a hybrid resin composite in Class II restorations with and without intermediate layer of flowable resin composite.
Each participant received at least two, as similar as possible, Class II restorations of the hybrid resin composite. One resin composite restoration of each pair (59) was chosen at random to be restored with an intermediary layer with flowable resin composite. The other was restored without. The 118 restorations were evaluated using slightly modified USPHS criteria at baseline and then yearly during 7 years.
Four drop outs were registered during the 7-year follow up (2 with and 2 without flowable) restorations. A prediction of the caries risk showed that 18 of the evaluated 46 patients were considered as high risk patients. Seventeen failures were observed, 8 in restorations with and 9 in restorations without an intermediate layer of flowable resin composite, resulting in a 14.9% failure rate after 7 years. The main reasons for failure were: fracture of resin composite (8), secondary caries (4) and cusp fracture (3). No statistical difference was seen between restorations restored with and without flowable layer.
The hybrid resin composite showed a good clinical performance during the 7-year evaluation. The use of flowable resin composite as an intermediate layer did not result in improved effectiveness of the Class II restorations

Monday, January 24, 2011

Product Updates

I recently had the opportunity to attend a Catapult event in which we got an update on products from a number of different companies. 
On the first day we got an update on products from Voco. Voco has a new flowable composite called Grandio Flow  that is as strong a universal composite. Curvy wedges three-dimensionally shaped to follow the contour of the tooth creating significantly less tissue irritation and postoperative discomfort.  I have gotten to try Futurabond DC which is a very easy to use dual cured one step bonding agent and I liked it a lot.

We got an update on day two from Bisco. The biggest thing was Z Prime! We can now bond to zirconia! BISCO’s Z-PRIME Plus is a single-component priming agent used to enhance adhesion between indirect restorative materials and composite resin cements. It can be used as a surface treatment for Zirconia and Alumina metal oxide ceramics, as well as other types of metals/alloys, composites and endodontic posts. Z-PRIME Plus has been specifically formulated to provide high bond strengths in either self-cure or light-cure modes. 

Velscope has released  a new lower priced model called the VELscope VX. See the video for more information and a cost of $2500.

Azenic gave us a demonstration on  their disposable handpiece. The Azenic DHP™ (Disposable High-Speed Handpiece), provides you with a high-performance, single-patient-use option with the convenience of a disposable product. Extensive clinical testing proves the DHP offers performance equal to or greater than industry leading, metallic handpieces which allows you to ‘reach for a disposable’ without giving up the performance you require. Save your turbines on your electric or air handpiece when cutting off crowns!

Go check out these new products!

Saturday, January 22, 2011

Missed Dental Appointments Denying Others NHS Care, Warns BDA, UK

Patients failing to attend NHS dental appointments in England could be denying significant numbers of other people the chance to access care, according to a survey by the British Dental Association (BDA). The survey suggests that committed NHS dentists in England each lose the equivalent of almost two weeks a year because patients fail to turn up for appointments. The BDA believes that the research highlights a problem of a significant scale and that the option to charge a fee for missed appointments, abolished as part of the widely-criticised 2006 reforms to dentistry, should be reinstated.

If the experiences of the dentists surveyed by the BDA reflect those of predominantly NHS dental practices across England, the research would indicate more than three-and-a-half million dental appointments were missed last year. Responses to the BDA research suggest that the problem is more prevalent among new patients than those who have been visiting a practice for many years. They also suggest that the problem has become more acute since dental practices' ability to charge patients for missed appointments was abolished in 2006.

John Milne, Chair of the BDA's General Dental Practice Committee, said:

"Sometimes there are genuine reasons why it's just not possible for a patient to keep an appointment with their dentist and everybody understands that, but the results of this research suggest that the scale of this problem is significant.

"Dental surgeries use letters, telephone calls and even text messages to remind patients of forthcoming appointments, so it's really disappointing to see that so many people appear prepared to deny others access to care by failing to show up. This not only wastes dentists' time, but also taxpayers' money. With many people still failing to secure the dental appointments they want, and the public purse under pressure, that's simply unacceptable. This problem needs to be tackled and the BDA believes that the Government should consider reintroducing a fee for patients who miss appointments to deter them from doing so."

British Dental Association (BDA)

Friday, January 21, 2011

BIOLASE Launches Dual-Wavelength Waterlase(R) iPlus(TM) All-Tissue Laser

RVINE, CA--(Marketwire - 01/20/11) - BIOLASE Technology, Inc. (NASDAQ:BLTI - News), the world's leading dental laser manufacturer and distributor, today announced the launch of the Waterlase® iPlus™ System dual-wavelength all-tissue laser, the first major breakthrough in all-tissue laser technology since the Waterlase MD™ was introduced in 2005.
The iPlus' Intuitive Power not only addresses the key needs for the next generation of laser dentists, but it also delivers more power, control and versatility for experienced laser dentists. Cutting of all tissue types with the new iPlus can be performed twice as fast as current laser systems, with no pain or discomfort, no risk of cross-contamination associated with conventional drills, and resulting in surface quality much smoother than ever.
Chief Technology Officer Dmitri Boutoussov, PhD, said, "The iPlus represents a major leap in the development of all-tissue dental lasers. Cutting teeth at the speed of the mechanical drill without sacrificing patient comfort has always been our goal at BIOLASE. It was a tremendous challenge for us which took several years to develop. Now, our patent-pending technology (named '2R Powered' technology) allows us to build an Er;Cr:YSGG laser with the highest pulse energy at short pulses among all Erbium-based, 3-micron lasers in the industry, as well as the highest pulse repetition rates. The result is very fast removal of hard tooth tissue with no discomfort to the patient, in combination with a smooth surface finish. Our new technology also opens a great opportunity to explore non-dental applications in medicine, which require fast and smooth cutting of both soft tissue and bone, coverage of larger surface areas (like skin or wounds), and where the delivery of laser radiation to treatment site through a flexible fiber is a must-have."
After using the system, Southern California dentist Dr. Christina Do stated, "It is amazingly fast, as fast or faster than my high-speed drill and the patient never flinched."
Unlike dental lasers of the last decade, the iPlus also features a revolutionary and intuitive applications-based user interface with a large high resolution touch screen programmed with over 50 factory-loaded procedure presets. Dentists will simply choose which procedure to perform -- from "bread and butter" restorative cases to specialty cases like periodontal or endodontic -- and the iPlus will program everything for the dentist.
The iPlus is available in a system configuration and features the proprietary 2780 nm YSGG technology together with an integrated iLase 940 nm diode laser or as a standalone unit. The YSGG technology has been the industry standard for all tissue dental lasers since its introduction in 1997. The iLase will enhance the capabilities of the YSGG by providing a diode laser that can be utilized for unexpected soft-tissue cases in an adjacent treatment room, better control of bleeding, and the potential for temporary pain relief and teeth whitening.
Chairman and CEO Federico Pignatelli said, "The iPlus is our new flagship laser product and will have a substantial impact on our sales in 2011 and beyond. It is the most advanced -- yet most intuitive -- dental laser ever conceived. With the Intuitive Power of the iPlus, dentists will be able to completely focus on dentistry, while the iPlus handles the technical laser details. I'm extremely proud of the job done by our R&D team under the leadership of Dr. Boutoussov, to deliver the perfect product for the rapidly growing worldwide dental laser market. We have received full FDA clearance and will begin taking orders next week for delivery this quarter."
Other innovations include a new fiber delivery system with little to no "pull-back" on the dentist's hand and a new 3X brighter illumination source. This allows for complete freedom of movement of the handpiece and greatly reduces hand fatigue throughout the day in combination with excellent site visibility.
"I have been using lasers from BIOLASE and other manufacturers for twenty years in my practice, and also taught hundreds of other dentists how to use lasers," commented Dr. Phil Hudson from Spokane. "Whenever I have asked what took them so long to buy a laser, two of the most common concerns were that it would slow them down, and it would be too difficult to learn. The iPlus solves all of that. It is blazingly fast in all classes of cavity preparation and is my first choice when I am confronted by soft tissue surgical challenges. Any dentist with a smart phone will feel right at home with the iPlus, as its intuitive nature eliminates both the mystery and the fear factor of lasers."
Pignatelli added, "With the iPlus, any dentist can quickly integrate an all-tissue laser into his or her practice. The intuitive nature of the interface is very much like the personal electronic devices we already use in our daily lives, so dentists will easily learn how to operate the iPlus. With our higher powered laser, dentists will be able to perform hard tissue procedures with as much speed as conventional drills, but without the discomfort and risk of cross contamination as often occurs with drills in conventional dental procedures as per recent astonishing published research. Finally, the iLase diode laser completes the set of services that dentists can provide for their patients. Our new Waterlase iPlus makes all of this possible."
The formal introduction of the iPlus, with a retail price depending on a system configuration expected to be at a price point of $54,900, will be in booth #1640 at the Yankee Dental Congress on January 27th in Boston. A preview video of the iPlus can also be viewed at

Thursday, January 20, 2011

Econo-Keys Operatory Keyboard

I recently got to try an Econo-Keys full-size wireless keyboard with the added convenience of a built-in touchpad. Its a fully sealed keys, touchpad and numberpad. Its resistant to dirt, debris and water, so it can easily withstand the dental operatory environments, along with repeated cleaning procedures. It is simple to clean use your cleaning agent of choice and spray down the keyboard. 

The great thing is that you can use the keyboard or touchpad with your gloves on! It was simple to setup. Just put in the batteries (which were included) and remove the USB dongle from the underside of the keyboard. I plugged in the dongle, Windows recognized the keyboard and was ready to use in less then a minute.

I am used to the trackpad on my Macbook so I was attempting to use multi-touch gestures out of habit. Unfortunately its not multi touch.  Its just a matter of retraining. The touchpad and keyboard are very responsive and its easy to pass the keyboard to my assistant if needed.

I would recommend looking at the EconoKeys Keyboards for your operatory.

Wednesday, January 19, 2011

Medical, dental practices are popular targets for acquisition

More doctors are opting to collect a paycheck, instead of managing the checkbooks for their practices, as medical groups have become hot acquisition targets.
Mednax closed 15 acquisitions of pediatric and anesthesiology practices in 2010, giving it 150 such purchases since it went public in 1995. Steve Collins, senior VP of business development for the Sunrise-based company (NYSE: MD), said the uncertainty of health care reform and the economy has encouraged doctors to link up with a strong company to manage their practices.
“Probably the biggest thing when we look at a physician group is high-quality and well-managed groups,” he said. “We augment and enhance what they have in place, instead of finding a practice that is broken and trying to fix it.”
Other companies have taken a similar approach in appealing to doctors. Miami-based Continucare Corp. (NYSE: CNU) bought 58 sleep diagnostic centers in three deals last year. West Palm Beach-based Metropolitan Health Networks (AMEX: MDF) has purchased three primary care physician practices since the start of 2010. Fort Lauderdale-based Phoenix Physicians, which owns emergency medicine and urgent care practices, added 12 doctors last year to reach 400.
Kendall-based Towncare Dental Partnership started in 1995 with four offices and grew to 45 practices in South and Central Florida through acquisitions and openings. Towncare President Mike Bileca said it generated $63.5 million in revenue last year.
After securing a $15 million senior ...
More doctors are opting to collect a paycheck, instead of managing the checkbooks for their practices, as medical groups have become hot acquisition targets.
Mednax closed 15 acquisitions of pediatric and anesthesiology practices in 2010, giving it 150 such purchases since it went public in 1995. Steve Collins, senior VP of business development for the Sunrise-based company (NYSE: MD), said the uncertainty of health care reform and the economy has encouraged doctors to link up with a strong company to manage their practices.
“Probably the biggest thing when we look at a physician group is high-quality and well-managed groups,” he said. “We augment and enhance what they have in place, instead of finding a practice that is broken and trying to fix it.”
Other companies have taken a similar approach in appealing to doctors. Miami-based Continucare Corp. (NYSE: CNU) bought 58 sleep diagnostic centers in three deals last year. West Palm Beach-based Metropolitan Health Networks (AMEX: MDF) has purchased three primary care physician practices since the start of 2010. Fort Lauderdale-based Phoenix Physicians, which owns emergency medicine and urgent care practices, added 12 doctors last year to reach 400.
Kendall-based Towncare Dental Partnership started in 1995 with four offices and grew to 45 practices in South and Central Florida through acquisitions and openings. Towncare President Mike Bileca said it generated $63.5 million in revenue last year.
After securing a $15 million senior debt facility from PNC Bank, Bileca said he plans to double its number of practices in the next three-and-a-half years, including the addition of seven or eight locations in 2011. That should mean at least 75 new jobs, he added.
“With the right doctor an acquisition can add a tremendous amount of value and get significant growth for doctors.,” Bileca said.
A lot of dentists are willing to sell their practices so they can be relieved of the burden of handling administrative duties and concentrate on seeing patients, Bileca said. Towncare, which started a dental office manager training program to ensure it could find qualified staff, has begun converting practices to digital imaging equipment and records.
Dentists can retain a minority stake in the practice and share in the profits.
At Mednax, physicians sign long-term contracts as salaried employees and don’t retain ownership, but they can participate in an incentive program where they benefit from the success of the practice, Collins said.
“The ideal of a sellable practice holds appeal to someone close to retirement,” he said. “These physicians built a practice over many years and have no way to realize that value if they retire.”
Mednax has been using electronic medical records since 2000 and has built up a clinical database of more than 13 million patient days in neonatology.
An Iowa physician for Mednax’s Pediatrix subsidiary started the 100,000 Babies Campaign to use information from the company’s database to establish guidelines for saving premature babies.
Most small physician practices don’t have access to such a large medical database, and implementing electronic medical records is prohibitively time consuming and expensive.
“When you look at how health care is paid for and reimbursed, to be able to not only say you are high-quality provider, but to demonstrate and show it with actual data is something we are able to do very well,” Collins said.

Tuesday, January 18, 2011

Burnout and engagement in relation with job demands and resources among dental staff in Northern Ireland

Community Dentistry and Oral Epidemiolog

 Ronald C. Gorter, Ruth Freeman

Volume 39, Issue 1, pages 87–95, February 2011



Objectives:  To investigate the psychological health – in particular, levels of burnout and engagement, job demands, job resources, and general psychological distress – among dental staff in Northern Ireland.
Methods:  Three hundred questionnaires were administered to all dental offices in the western part of Northern Ireland. The questionnaire consisted of ‘Maslach Burnout Inventory (MBI)’, ‘Job Demands in Dentistry measure’, ‘Utrecht Work Engagement Scale (UWES)’, ‘Job Resources in dentistry measure’, and ‘General Health Questionnaire (GHQ)’.
Results:  Overall response rate among all staff members was 45% (for general dental practitioners: 65%). Burnout mean scores were unfavourable when compared with MBI manual norm scores, 26% had scores in the ‘high’ categories of both emotional exhaustion (EE) and depersonalization (DP). This is an indication of severe burnout risk. Time pressure, financial worries, and difficult patients appeared to be the most prominent work demands (mean scores >3). All job demands’ scales correlated significantly (P < 0.01) and positively with both EE and DP: 0.30 > < 0.62. Mean scores for UWES, and all job resources’ subscales were all well above each subscale’s range midpoint. Treatment results appeared the most prominent work resource. GHQ mean score for all was 1.05 (SD = 0.51). No difference in mean score was found between dentists and other staff (F1,123 = 1.08, NS). With ‘case level’ set at a score >3 as a cut-off point, 25% of the subjects have to be considered cases.
Conclusion:  Burnout is a serious threat for the dental team in this region of Northern Ireland, especially among general dental practitioners. One-quarter of the dentists were categorized as having a serious burnout risk. Dentists appeared to have most trouble with the work environment aspects: time pressure and financial worries. Furthermore, the proportion of those suffering from psychological distress was unusually high. In contrast to these findings, encouraging levels of engagement were identified. It is recommended that attention for burnout risk is given priority by dental associations.

Monday, January 17, 2011

ToothIQ TV adding more videos

ToothIQ provides free patient education video modules on the web. ToothIQ TV has over 180 animated videos on the web and also available from your mobile device.  Go check out by clicking on the link.

Saturday, January 15, 2011

Automated dental implantation using image-guided robotics: registration results

DOI: 10.1007/s11548-010-0543-3



One of the most important factors affecting the outcome of dental implantation is the accurate insertion of the implant into the patient’s jaw bone, which requires a high degree of anatomical accuracy. With the accuracy and stability of robots, image-guided robotics is expected to provide more reliable and successful outcomes for dental implantation. Here, we proposed the use of a robot for drilling the implant site in preparation for the insertion of the implant.


An image-guided robotic system for automated dental implantation is described in this paper. Patient-specific 3D models are reconstructed from preoperative Cone-beam CT images, and implantation planning is performed with these virtual models. A two-step registration procedure is applied to transform the preoperative plan of the implant insertion into intra-operative operations of the robot with the help of a Coordinate Measurement Machine (CMM). Experiments are carried out with a phantom that is generated from the patient-specific 3D model. Fiducial Registration Error (FRE) and Target Registration Error (TRE) values are calculated to evaluate the accuracy of the registration procedure.


FRE values are less than 0.30 mm. Final TRE values after the two-step registration are 1.42 ± 0.70 mm (N = 5).


The registration results of an automated dental implantation system using image-guided robotics are reported in this paper. Phantom experiments show that the practice of robot in the dental implantation is feasible and the system accuracy is comparable to other similar systems for dental implantation.

Friday, January 14, 2011

CC claims for sports-related dental trauma from 1999 to 2008: a retrospective analysis.

Welch CL, Thomson WM, Kennedy R. N. Zeal. Dent. J. 2010; 106(4): 137-42.

OBJECTIVE: To describe trends in sports-related dental injuries reported to ACC in the past 10 years.

DESIGN: Retrospective case series.

METHODS: De-identified data on orofacial injuries were obtained from ACC for the financial years 1999-2008, and new claims were identified for each year (with recurring claims omitted from the analysis). Patterns in new-claim data were identified by age, sex, region and the sport involved. Trends in claims for the sport categories were also identified

RESULTS: The annual number of claims ranged from 24,998 to 31,257; overall, 38.7% of claims were made by females and 61.3% by males, and these proportions remained largely unchanged during the observation period. For sports-related claims, those aged 11-20 years had the highest percentage of claims (with between 41.7% and 44.4%, depending on year) while those older than 60 had the smallest percentage of claims, with 0.5% to 1.1%. Sport was involved in 20.6% to 26.2% of new claims. The highest percentage of injuries was attributable to rugby (between 22.2% and 33.1%, depending on the year). Water sports contributed to between 14.2% and 20.8% of claims. Cycling increased from 1.5% in 1999 to 15.3% in 2006, and then decreased to 10.6% in 2008. Hockey, basketball, soccer, cricket and netball had 4.4%, 4.8%, 6.9%, 4.7% and 3.9% respectively.

CONCLUSIONS: Although its share has decreased in recent years, rugby remained the greatest contributor to sport-related orofacial injuries, with water sports consistently second (cycling had the largest change, with a rapid increase in the past 3 years). There is a need to re-examine mouthguard (and other injury prevention) policies for particular sports.

Thursday, January 13, 2011

Lava™ Network Expands to Include Argen®

Design files can be exported for metal laser melted substructures

ST. PAUL, Minn. – (January 12, 2011) –  3M ESPE announces the addition of Argen®, manufacturer of CAD/CAM designed metal copings, to its Lava™ Network. This partnership gives labs with the 3M™ ESPE™ Lava™ Scan ST Design System the ability to export files for metal laser melted substructures. The move is part of 3M ESPE’s continuing effort to improve lab productivity, and will allow owners of the Lava Scan ST Scanner to reduce expenses incurred during the production of a traditional porcelain-fused-to-metal (PFM) restoration, including waxing, casting, investing, and metal inventory stocking. 

"We are very pleased with the quality of the restorations coming from the Lava Design System," said Anton Woolf, CEO of Argen. "Argen is proud to be a leader in the digital space, and our connectivity with the Lava Network enables us to collaborate with a world leader in offering superior solutions to our customers.”

"The connection between Argen and 3M ESPE allows us to use our Lava Scan ST scanner to improve output of metal copings and frameworks," said Steve Proctor, owner of New Generation Laboratory. “This gives our laboratory the ability to produce more cases digitally and bill more product each day.”

This expansion of the Lava Network follows the recent addition of 3Shape and Dental Wings scanners to the network, which gave users of these systems the ability to offer clinically proven 3M materials to clients. The opening of the Lava Network to each of these systems is part of an ongoing effort by 3M ESPE to continue to broaden its associations with validated partners and systems. Labs can connect to the Lava Network with no additional capital investment, expanding their material options and workflows.

"This new collaboration between Argen and 3M ESPE provides laboratories with the ability to streamline production of PFM restorations, improving their profitability,” said Dan McMaster, Global Business Director, 3M ESPE. “As these recent developments demonstrate, the Lava Network is continually expanding to give labs more capabilities.”

Labs that currently own the Lava Scan ST Design System should contact your 3M ESPE specialist with requests to upgrade their export functionality to Argen. 

For more information, visit or call 1-800-634-2249.

Wednesday, January 12, 2011

GlaxoSmithKline and DENTSPLY International Sign Global Agreement to Create a Portfolio of Co-Branded Professional Oral Care Products

YORK, Pa., Jan. 7, 2011 (GLOBE NEWSWIRE) -- GlaxoSmithKline (GSK) and DENTSPLY International (Nasdaq:XRAY), a global leader in professional dental products, today announced that they have entered into an agreement to create a portfolio of co-branded oral care products to be used in the dental office by patients suffering from tooth sensitivity, a problem which is estimated to affect 1 in 3 people.
In December 2009, GSK acquired NovaMin® through the purchase of NovaMin Technology Inc. NovaMin® is a patent protected innovative calcium phosphate technology which has been clinically proven to relieve tooth sensitivity. Today's agreement will allow DENTSPLY to co-brand its NUPRO® products which contain the NovaMin® technology, with GSK's Sensodyne® brand. This co-branding will provide a continuum of care for tooth sensitivity treatment from the dental office to everyday use at home.
Today's agreement involves no exchange of cash or equity from either party.
"DENTSPLY and GSK have come together with one goal in mind -- to provide a continuous treatment program for patients who suffer from the common problem of tooth sensitivity," remarked Christopher Clark, DENTSPLY's President and Chief Operating Officer. "We are combining some of the most well regarded brands and products on the market to provide a complete treatment solution with both in-office and at-home care regimens for patients suffering from this type of tooth pain. We are pleased to be partnering with GSK and Sensodyne, a global leader in sensitivity treatment."
Carlton Lawson, Vice President Sensodyne, GSK, states, "This agreement demonstrates GSK Consumer Healthcare's strategy to grow and expand its science-driven oral healthcare business. Through our agreement with DENTSPLY, sensitive teeth sufferers will be able to access an effective portfolio of Sensodyne-branded products providing continuous care from the dental office to the home. By leveraging both companies' brands and capabilities, we aim to build awareness of the benefits of NovaMin® and therefore further consolidate our position as the leader in the over the counter oral healthcare market. DENTSPLY is a significant player and an important partner for us in the professional dental space, and we look forward to working closely with them to provide additional sensitivity solutions in the future."
The agreement also provides for the use of both companies' technical, clinical and marketing resources to offer a comprehensive range of tooth sensitivity treatment options for the dental professional and the patient. While the agreement allows DENTSPLY to develop a portfolio of professional tooth sensitivity products, in the short term, DENTSPLY will release two, co-branded dental products containing the NovaMin® technology:
  • NUPRO Sensodyne Professional prophy paste -- the proven performance of market leading NUPRO powered by NovaMin®, applied by dental professionals, to provide immediate in office relief from tooth sensitivity. 
  • Sensodyne NUPRO Professional toothpaste -- a toothpaste to be dispensed by dental professionals, containing NovaMin and high fluoride for enamel remineralization.

Tuesday, January 11, 2011

HHS Aims To Lower Fluoride In Drinking Water

Fluoride in drinking water is a contentious issue, scientists say it protects our teeth from decay, while a considerable number of people have been campaigning against water fluoridation, saying it is harmful for health. Today, the HSS (US Department of Health and Human Service) and the EPA (US Environmental Protection Agency) have announced they are taking steps to make sure guidelines and standards on fluoride in drinking water continue protecting dental health, but at the lowest possible levels.

The HHS would like to set the recommend level of fluoride at the lowest end of the optimal range to prevent tooth decay. The EPA says it is reviewing what the maximum levels should be.

The EPA and HHS say their steps are aimed at maintaining the health benefits of water fluoridation, while at the same time protect overall human health, especially children.

The fluoridation of drinking water is seen as "one of the ten great public health achievements of the 20th century."

HHS Assistant Secretary for Health Howard K. Koh, MD, MPH., said:

"One of water fluoridation's biggest advantages is that it benefits all residents of a community - at home, work, school, or play. Today's announcement is part of our ongoing support of appropriate fluoridation for community water systems, and its effectiveness in preventing tooth decay throughout one's lifetime."

Peter Silva, EPA Assistant Administrator for the Office of Water, said:

"Today both HHS and EPA are making announcements on fluoride based on the most up to date scientific data,. EPA's new analysis will help us make sure that people benefit from tooth decay prevention while at the same time avoiding the unwanted health effects from too much fluoride."

Dental fluorosis can occur among children aged 8 years or less. Dental fluorosis results from the excessive intake of fluoride during a child's period of tooth development. The functioning of the ameloblasts (enamel-forming cells) can be disturbed, preventing the normal maturation of the enamel. Symptoms can range from mild to severe, depending on the levels of fluoride intake. In mild cases, small white areas appear in the enamel, while in severe cases the teeth appear stained and mottled.

The EPA and HHS say they have reached an understand after looking at available science regarding fluoride's benefits and possible risk to children.

In the vast majority of cases, dental fluorosis in the USA is mild or very mild. Severe dental fluorosis is extremely rare in America.

Americans are exposed to many more sources of fluoride, compared to their ancestors when water fluoridation was first introduced in the 1940s. Apart from water, people may intake fluoride from toothpaste, fluoride applied at a dentist's office, prescription fluoride supplements, and mouth rinses.

The HHS stresses that the dramatic drop in tooth decay in the USA over the last seventy years has been mainly due to water fluoridation and fluoride in toothpaste.

Current recommendations range from 0.7 to 1.2 milligrams of fluoride per liter of water. The HHS would like to propose a recommendation of just 0.7 milligrams, with no upper limit.

The HHS believes its proposed recommendation addresses both issues - protecting dental health and human health (side effects) in general.

In a communiqué, the HHS wrote:

"These scientific assessments will also guide EPA in making a determination of whether to lower the maximum amount of fluoride allowed in drinking water, which is set to prevent adverse health effects."

Monday, January 10, 2011

New device set to combat fear of the dentist's drill

An innovative device which cancels out the noise of the dental drill could spell the end of people's anxiety about trips to the dentist, according to experts at King's College London, Brunel University and London South Bank University, who pioneered the invention.
It is widely known that the sound of the dental drill is the prime cause of anxiety about dental treatment, and some patients avoid trips to the dentist because of it. This new device could help address people's fears and encourage them to seek the oral healthcare treatment they need.
The prototype device works in a similar way to noise-cancelling headphones but is designed to deal with the very high pitch of the dental drill. Patients would simply unplug their headphones, plug the device into their MP3 player or mobile phone, and then plug the headphones into the device, allowing them to listen to their own music while completely blocking out the unpleasant sound of the drill and suction equipment. The patient can still hear the dentist and other members of the dental team speaking to them but other unwanted sounds are filtered out by the device.
Containing a microphone and a chip that analyses the incoming sound wave, the device produces an inverted wave to cancel out unwanted noise. It also uses technology called 'adaptive filtering' where electronic filters lock onto sound waves and removes them, even if the amplitude and frequency change as the drill is being used.
The device was initially the brainchild of Professor Brian Millar at King's College London's Dental Institute who was inspired initially by carmaker Lotus' efforts to develop a system that removed unpleasant road noise, while still allowing drivers to hear emergency sirens. Then with over a decade of collaboration with engineering researchers at Brunel University and London South Bank University, a prototype has been designed, built and successfully evaluated.
Although the product is not yet available to dental practitioners, King's is calling for an investor to help bring it to market. Professor Brian Millar said: "Many people put off going to the dentist because of anxiety associated with the noise of the dentist's drill. But this device has the potential to make fear of the drill a thing of the past.
"The beauty of this gadget is that it would be fairly cost-effective for dentists to buy, and any patient with an MP3 player would be able to benefit from it, at no extra cost. What we need now is an investor to develop the product further, to enable us to bring this device to as many dental surgeries as possible, and help people whose fear of visiting the dentist stops them from seeking the oral healthcare they need."

Saturday, January 08, 2011

Preferences of dental care providers in maintaining compromised teeth in relation to their professional status: implants instead of periodontally involved maxillary molars?

Clinical Oral Implants Research

Article first published online: 29 DEC 2010
Nicola U. Zitzmann, Susanne S. Scherrer, Roland Weiger, Niklaus P. Lang, Clemens Walter


Aim: The purpose of this study was to evaluate the dentists' decision making in the maxillary molar region to find out how it is influenced by general practitioners' and specialists' characteristics as well as by the external evidence.
Material and methods: A questionnaire was developed containing clinical cases and statements to assess practitioners' opinions on the treatment of periodontally involved maxillary molars and implant therapy with sinus grafting. Data were analysed with respect to the dentists' age and speciality.
Results: Three hundred and forty questionnaires were evaluated (24% from universities, 76% from educational courses, overall response rate 35.1%). Forty six per cent of all participants indicated they had specialised, 52% placed dental implants, while 33% performed sinus grafting and 64% periodontal surgeries. Forty six per cent were against or were indecisive about having sinus grafting performed on themselves. The treatment proposals given for the clinical cases revealed a preference among older dentists and general practitioners for regenerative treatments even when these were not evidence based in through-and-through furcation involvements. Resective therapies were most often selected by periodontists. Prosthodontists tended to prefer more invasive treatment options with extractions and augmentations. More experienced general practitioners favoured conventional fixed dental prostheses in free-end situations or no treatment rather than the complicated augmentation procedures, which were preferred by younger dentists.
Conclusions: Implant placement seems to be widely accepted by almost all subjects, who may either place implants themselves or refer patients. More information seems to be needed on the indications for regenerative therapies for furcation involved maxillary molars, and guidelines required for decision making in complex clinical situations.

Friday, January 07, 2011

DentalEZ® Group Introduces the StarDental® Handpiece Maintenance Kit

Designed to Maintain and Extend the Life of all Star® Products

Malvern, PA (December 30, 2010) DentalEZ® Group, a supplier of innovative products and services for dental health professionals worldwide, is pleased to introduce the StarDental® Handpiece Maintenance Kit. 

Designed to extend the life of all StarDental handpieces, the StarDental Handpiece Maintenance Kit contains everything needed to perform maintenance and minor repairs on the entire line of StarDental products, including high- and low-speed handpieces, the Blis-sonic Scaler, and the Prophy Star® 3 hygiene handpiece. 

Housed in a hardcover toolbox-style case, each StarDental Handpiece Maintenance Kit includes DentaLube® II handpiece lubricant, Junk-Out chuck cleaner, a variety of o-rings and seals, and an assortment of useful tools to make chairside handpiece maintenance convenient and easy. 

Purchase of the StarDental Handpiece Maintenance Kit saves the buyer more than 15% over buying the maintenance and spare components separately. 

For more information on the StarDental Handpiece Maintenance Kit and all StarDental products, please call 866-DTE-INFO or visit 

About DentalEZ® Group

DentalEZ® Group is committed to advancing the practice of dentistry through innovative products and services.  Encompassing six distinct product brands—StarDental®, DentalEZ®, CustomAir®, RAMVAC®, NevinLabs, and Columbia Dentoform® — DentalEZ® Group manufactures everything in the operatory, from handpieces to chairs to vacuum systems to dental simulation models, creating a complete line of products to elevate the health, comfort, and efficiency of the dental operatory.  For more information, please visit

Thursday, January 06, 2011

Dentistry a second time?

European Journal of Dental Education 

Y. Oweis, S. Hattar, R. A. Eid, A. Sabra

29 DEC 2010

DOI: 10.1111/j.1600-0579.2010.00666.x 


Introduction:  Dentistry in Jordan is an attractive profession due to the high social standard it provides. This study aimed to investigate whether dentists would choose dentistry again and whether their professional expectations would change after years of practice. Of special interest were possible differences according to gender, age, degree and place of work.
Methods:  A self-completion questionnaire was filled by a stratified random sample of 355 dentists in Jordan using closed questions. The questionnaire included professional, social and economic factors that influenced people’s choice of dentistry and whether they would choose it again and the reasons for that.
Results:  The results showed that 52% of dentists who returned the questionnaire had dentistry as their first choice; the most important determining factor was the dentist’s grades in the general secondary education. Fifty-two per cent stated that they would not choose it for the second time, the main reason being the health problems acquired through the profession and the low income. Helping others and the social standard dentistry provides were the main reasons given for dentists to choose dentistry again.
Conclusion:  We report that more than half of the dentists included in this study would not ‘choose dentistry again’ as their profession regardless of age, gender and degree. This is mainly due to health problems acquired and the low income. We found that job satisfaction is highly affected by the workplace, and that more females are dissatisfied by the profession. This suggests that cultural background strongly affects the career decision.

Wednesday, January 05, 2011


Health Care Private Equity Firm Finalizes Agreement to Acquire and Build Leading Dental Pharmaceutical Company; Recruits Janet Vergis as CEO

CHICAGO – January 5, 2011 – Water Street Healthcare Partners announced today that it has acquired OraPharma, Inc. from Johnson & Johnson.  Water Street, a strategic private equity firm focused exclusively on health care, plans to build OraPharma into a leading specialty pharmaceutical company focused on dental and oral health care.  It is Water Street’s latest agreement with a global health care company to acquire a business and expand its group of companies specializing in life sciences, medical devices, distribution and health care services.

OraPharma specializes in developing and distributing pharmaceutical products that maintain and restore oral health. Its main product, ARESTIN® (minocycline hydrochloride) is the leading locally administered antibiotic used by dentists for procedures that treat periodontitis.  Affecting more than 50 million Americans, periodontitis is the primary cause of tooth loss in adults.  OraPharma employs approximately 175 people who support thousands of dentists, hygienists, oral surgeons and periodonists across the country.  

Water Street has recruited Janet Vergis, an executive with more than 20 years of pharmaceutical experience, to serve as chief executive officer of OraPharma.  Through February 2009, Ms. Vergis served as president of Janssen Pharmaceutica -- which included responsibility for the McNeil Pediatrics and Ortho-McNeil Neurologics businesses -- a member of the Johnson & Johnson family of companies.  Previously, Ms. Vergis held positions in pharmaceutical research, new product development, sales and marketing.  

“Our goal is to build OraPharma into a leading pharmaceutical products company focused exclusively on dental and oral health.  Janet’s broad pharmaceutical experience, and strong track record of growing and operating businesses make her ideally suited for this role.    We will work closely with Janet on a strategic growth plan that will invest in research and development and acquisition opportunities to expand OraPharma’s portfolio of products and services to the dental health market,” said Al Heller, an operating partner with Water Street and a longtime executive in the pharmaceutical industry.

OraPharma is the latest in a series of acquisitions that Water Street has completed with global health care companies.  Nearly half of Water Street’s investments are business divisions it has acquired from global leaders including Gentiva Health Services, Inc., Medtronic, Inc. and Smith & Nephew.

“We are pleased that Water Street’s strong track record of working with global health care leaders to acquire business divisions and transform them into successful independent  companies has led to this opportunity with OraPharma.  Water Street will leverage our team’s pharmaceutical expertise and experience in corporate divestitures to build OraPharma into a market leader well-positioned to achieve long-term sustainable growth,” said Peter Strothman, a principal with Water Street.

About OraPharma, Inc.
OraPharma, Inc. is a specialty pharmaceutical company that discovers, develops and commercializes therapeutics for the treatment of periodontal disease at various phases of progression. ARESTIN® (minocycline hydrochloride) Microspheres, 1 mg ( is indicated as an adjunct to scaling and root planing procedures for reduction of pocket depth in patients with adult periodontitis. For more information about OraPharma and its products, visit
About Water Street Healthcare Partners
Water Street Healthcare Partners is a strategic private equity firm focused exclusively on health care.  The firm has a strong record of building market-leading companies across key growth sectors in health care.  It has worked with some of the world’s leading health care companies on its investments including Gentiva, Medtronic and Smith & Nephew.  Water Street’s team is comprised of industry executives and private equity professionals with decades of experience investing in and operating global health care businesses.  The firm is headquartered in Chicago.  For more information about Water Street, visit

Biological approaches toward dental pulp regeneration by tissue engineering

Journal of Tissue Engineering and Regenerative Medicine

  1. Hai-Hua Sun1,,
  2. Tao Jin2,,
  3. Qing Yu1,*,
  4. Fa-Ming Chen3,*
Article first published online: 30 DEC 2010


Root canal therapy has been the predominant approach in endodontic treatment, wherein the entire pulp is cleaned out and replaced with a gutta-percha filling. However, living pulp is critical for the maintenance of tooth homeostasis and essential for tooth longevity. An ideal form of therapy, therefore, might consist of regenerative approaches in which diseased/necrotic pulp tissues are removed and replaced with regenerated pulp tissues to revitalize the teeth. Dental pulp regeneration presents one of the most challenging issues in regenerative dentistry due to the poor intrinsic ability of pulp tissues for self-healing and regrowth. With the advent of modern tissue engineering and the discovery of dental stem cells, biological therapies have paved the way to utilize stem cells, delivered or internally recruited, to generate dental pulp tissues, where growth factors and a series of dentine extracellular matrix molecules are key mediators that regulate the complex cascade of regeneration events to be faithfully fulfilled.

Tuesday, January 04, 2011

Tissue engineering approaches for regenerative dentistry.

Regen Med. 2011 Jan;6(1):111-24.
Department of Operative Dentistry & Periodontology, University of Regensburg, Germany.


Although teeth can withstand enormous abrasive forces, they are susceptible to damage due to trauma, acids and bacterial attack. Conventional treatment relies on synthetic materials to fill defects and replace whole teeth, but these remain substitutes and cannot restore the tissues' physiological architecture and function. With the isolation of postnatal stem cells from various sources in the oral cavity and the development of smart materials for cell and growth factor delivery, possibilities for alternative, biology-based treatments arise. Interdisciplinary approaches are needed to move from replacement to regeneration, involving clinicians as well as biologists, stem cell researchers and material scientists. First, in order to provide an appreciation for the complexity of the tooth as a whole, its components and surrounding structures will be described. Next, the basic principles of tooth development will be presented, which can be applied to recreate signaling events and utilize them to build whole teeth. For the regeneration of individual tooth structures, the classical tissue engineering triad can be utilized, using dental stem cells, scaffold materials and relevant growth and differentiation factors. Recent successful engineering initiatives on whole teeth as well as on specific tissues such as enamel, the dentin-pulp complex or periodontal ligament will be discussed. In projecting future research directions, we conclude with a brief discussion of key components necessary to develop effective strategies for dental tissue engineering, which might enable us to implement novel regenerative strategies in clinical practice in the near future.