Tuesday, May 31, 2011

A Comparative Study of the Effects of Three Root-end Filling Materials on Proliferation and Adherence of Human Periodontal Ligament Fibroblasts

Journal of Endodontics
Volume 37, Issue 6 , Pages 865-870, June 2011



The present in vitro study was conducted with the aim of evaluating and comparing the cytotoxic effects of three root-end filling materials, ProRoot mineral trioxide aggregate (ProRoot MTA; Dentsply Tulsa Dental, Memphis, TN), MTA Angelus (Angelus, Londrina, Brazil), and a modified zinc oxide-eugenol cement (Super-EBA; Bosworth Co, Skokie, IL) on human periodontal ligament (PDL) fibroblasts.


PDL cells were cultured in an mineral trioxide aggregate (MTA)- or a Super-EBA–conditioned medium to assess the viability as determined by the trypan blue exclusion assay. The proliferation of the cells was recorded, and the cellular morphology was observed by confocal microscopy. Moreover, PDL cell aggregates were cultured on the substrate surfaces to assess cell adhesion.


ProRoot MTA was found to be the most biocompatible material, whereas Super-EBA was found to be the most cytotoxic material because it significantly inhibited the cell growth and adherence on its. In the presence of ProRoot MTA, the PDL cell proliferation was almost unaltered. MTA Angelus was found to be more cytotoxic than ProRoot MTA, offering, however, excellent scaffold properties for the adhesion of cell aggregates.


Under the conditions of the present study, it seems that commercially available forms of MTA may behave in different ways regarding their proliferative effect on human PDL fibroblasts. ProRoot MTA appears to be the most biocompatible of the three tested materials when considering use for root-end endodontic microsurgery.

Monday, May 30, 2011

ACTEON To Launch New Viva Learning™ CE Website

Learn HealthSci Inc. announced today that ACTEON®, a world leader in small equipment and imaging products for dentists, will be joining the Viva Learning™ network and hiring Learn HealthSci to create the ACTEON Viva Learning™ dental continuing education website.
The new website will serve as a hub for ACTEON’s continuing education initiatives that will include interactive, live CE webinars, CE webinar archives, an online resource library and a variety of product training videos. Interactive and self-study continuing education credit will be available.
“ACTEON offers innovative dental technologies to the profession that require support through practical continuing education that focuses on clinical applications,” says Wyatt Wilson, Vice President and COO of ACTEON North America. “Now, with our new Viva Learning™ website and extended reach to thousands of Viva users, we can accomplish our educational goals in a cost-effective and efficient way,” says Wilson.
"We are very excited to have ACTEON join the Viva Learning™ network and utilize the Viva platform for online continuing education," says Philip Klein, CEO of Learn HealthSci Inc. “ACTEON products are designed for specific and precise dental procedures that require ongoing end-user education—and Viva Learning™ offers all the tools and services that can meet that challenge,” says Klein.
The Viva Learning™ package includes all phases of professional online education including content and website management, live online support, speaker training as well as a comprehensive learning management system. Live webinars allow online attendees to interact with the speaker through polling and Q&A. Presentations are highly interactive and include voice-over, slides and streaming video. Viva Learning™ continues to gain popularity among dental professionals worldwide, with over 25,000 Viva Learning™ student accounts.

Saturday, May 28, 2011

Antibiotic prophylaxis and early dental implant failure: a quasi-random controlled clinical trial.

Eur J Oral Implantol. 2011 Spring;4(1):31-8.


Purpose: To compare the efficacy of three different antibiotic regimens in reducing early dental implant failure. Materials and methods: In a controlled clinical trial, 270 consecutively treated patients were allocated to three antibiotic groups, alternatively, according to order of participation in the trial: Group A (2 g amoxicillin single preoperative dose), Group B (single preoperative 2 g amoxicillin followed by 500 mg three times daily for 5 days) and Group C (postoperative amoxicillin with clavulanic acid 625 mg three times daily for 5 days). Outcomes were pain, wound infection, dehiscence, adverse events possibly related to antibiotics and early implant failure. The patients were followed postoperatively at 1 week, 1 month and at the beginning of the prosthetic stage. Chi-square test and ANOVA test were used to examine differences. Results: In total, 240 patients were adherent to the trial protocol: Group A, 73 patients (210 implants); Group B, 79 patients (266 implants); and Group C, 88 patients (290 implants). Patients experiencing early implant failure: 12 in Group A (16.4%), 11 in Group B (13.9%) and 13 in Group C (14.8%). No statistically significant differences were observed for any of the outcome measures between the three groups. Conclusions: It may not be necessary to provide postoperative antibiotics in patients undergoing dental implant placement, however, these preliminary findings need to be confirmed by large multicentre clinical trials.

Friday, May 27, 2011

The influence of smoking on the survival of dental implants: a 5-year pragmatic multicentre retrospective cohort study of 1727 patients.

Eur J Oral Implantol. 2011 Spring;4(1):39-45.


Purpose: To evaluate the influence of cigarette smoking on the survival of dental implants with a retrospective observational study of 5 years. Materials and Methods: A total of 1727 consecutively treated patients at four private practices were divided into non-smokers (NS group, 1178 patients) and smokers (S group; 549 patients) according to what they declared prior to implant placement. Non-smokers received 4460 implants and 2583 implant-supported prostheses, whereas smokers received 2260 implants and 1292 implantsupported prostheses. Various implant systems and procedures were used. Outcome measures were prosthesis and implant survival. Results: Over the 5 years after loading, 159 (17%) non-smokers and 91 (13%) smokers were lost to follow-up; 20 (0.9%) prostheses could not be placed or failed in 15 non-smokers and 12 prostheses (1.2%) could not be placed or failed in 12 smokers. One hundred and twelve (2.9%) implants failed in 105 non-smokers and 107 (5.5%) implants failed in 75 smokers. Most of the implant failures (90%) occurred before implant loading. Fitting a logistic regression for early implant failures and total implant failures, taking into account the clustering of implants in patients, there were no statistically significant differences for prosthesis failures (P value not calculated as too few failures) and early implant failures between the two groups (P = 0.13). However, when considering all implant failures up to 5 years after loading, significantly more failures (5.5%) occurred in smokers compared with non-smokers (2.9%) (OR 1.72; 95% CI 1.20 to 2.50; P = 0.003). Conclusions: Due to the retrospective nature of this study, conclusions have to be interpreted with caution. Five years after loading, smokers experienced almost twice as many implant failures compared with non-smokers. Non-statistically significant trends in favour of non-smokers were observed for early implant failures and prosthesis failures.

Thursday, May 26, 2011

Aetna Analysis Provides Proof That Dental Medical Integration Program Helps People With Chronic Conditions Take Better Care Of Their Teeth And Gums

Aetna (NYSE: AET) today announced the results of an analysis of the Aetna Dental Medical Integration (DMI) program. Since 2007, over 930,000 people participated in the DMI program and Aetna sent 652,000 educational mailings. In addition, dental care coordinators made over 250,000 follow up phone calls to members who have not had a recent dental visit. As a result of Aetna's proactive outreach, 56 percent of people who received information from the DMI program sought dental care. The analysis also showed that DMI members with access to regular dental care had better control of their diabetes including more regulated blood glucose levels.

"Approximately 65 percent of the US population has periodontal disease. The prevalence of periodontal disease increases to 90 percent in individuals with a chronic condition like diabetes," said Mary Lee Conicella, DMD, Chief Dental Officer for Aetna Dental. "The scientific literature clearly shows the association between oral health and good overall health. The DMI program helps find ways to connect the two by educating patients and providing information and resources to help people get the care they need."

Aetna's DMI program is available to people with Aetna dental and medical coverage and uses sophisticated technology to identify members who have not had a recent dental visit that are pregnant, or have chronic conditions such as diabetes or cardiovascular disease, including kidney or vision problems or hypertension. Aetna reaches out to members by mail and through phone calls to make people aware of how gum disease may impact their medical condition. Members who enroll in the DMI program receive one additional free cleaning at the dentist and access to certain periodontal treatments covered at 100 percent with no deductibles or coinsurance.

Aetna Dental sponsored a symposium on the connection between chronic disease and oral health called Diabetes and Oral Disease: Implications for Health Professionals on May 4, 2011 at the New York Academy of the Sciences in New York, NY.

Wednesday, May 25, 2011

The cost-effectiveness of supportive periodontal care: a global perspective.

J Clin Periodontol. 2011 Jun;38(6):553-561. doi: 10.1111/j.1600-051X.2011.01722.x.


London School of Hygiene and Tropical Medicine, London, UK School of Dental Sciences, Newcastle University, Newcastle, UK Department of Conservative Dentistry, University Hospital of Jena, Jena, Germany School of Dentistry and Oral Health, Griffith University, Southport, Qld, Australia Department of Biomaterials Science, Osaka University Graduate School of Dentistry, Osaka, Japan Department of Oral Medicine and Periodontology, Faculty of Dental Sciences, University of Peradeniya, Peradeniya, Sri Lanka Department of Restorative Dentistry, Cork University Dental School and Hospital, Cork, Ireland Department of Periodontics, University of Washington, Seattle, WA, USA Faculty of Odontology, University Complutense, Madrid, Spain Institute of Health and Society, Newcastle University, Newcastle, UK.


Pennington M, Heasman P, Gaunt F, Güntsch A, Ivanovski S, Imazato S, Rajapakse S, Allen E, Flemmig T, Sanz M, Vernazza C. The cost-effectiveness of supportive periodontal care: a global perspective. J Clin Periodontol 2011; doi: 10.1111/j.1600-051X.2011.01722.x. ABSTRACT: Aim: To evaluate the cost-effectiveness of supportive periodontal care (SPC) provided in generalist and periodontal specialist practices under publicly subsidized or private dental care. Material and methods: SPC cost data and the costs of replacing teeth were synthesized with estimates of the effectiveness of SPC in preventing attachment and tooth loss and adjusted for differences in clinician's time. Incremental cost-effectiveness ratios were calculated for both outcomes assuming a time horizon of 30 years. Results: SPC in specialist periodontal practice provides improved outcomes but at higher costs than SPC provided by publicly subsidized or private systems. SPC in specialist periodontal practice is usually more cost-effective than in private dental practice. For private dental practices in Spain, United Kingdom and Australia, specialist SPC is cost-effective at modest values of attachment loss averted. Variation in the threshold arises primarily from clinician's time. Conclusion: SPC in specialist periodontal practice represents good value for money for patients (publicly subsidized or private) in the United Kingdom and Australia and in Spain if they place relatively modest values on avoiding attachment loss. For patients in Ireland, Germany, Japan and the United State, a higher valuation on avoiding attachment loss is needed to justify SPC in private or specialist practices.

Tuesday, May 24, 2011

Darby Dental Supply Now Offers Free Online Continuing Education

Jericho, NY – May 19, 2011Darby Dental Supply, LLC, the largest all-telesales national distributor of dental merchandise, recently announced the availability of its new Online Continuing Education program for dental professionals.  Dental professionals can now access hundreds of free CE courses located conveniently on Darby’s website at www.DarbyDentalSupply.com. 

A variety of educational topics will be addressed through interactive live CE webinars, “how-to” clinical techniques, and hands-on workshops by the most respected and well-known dentists, hygienists, manufacturers, and key opinion leaders in the industry.  “Our new Continuing Education Program offers dental professionals immediate access to its multimedia training library, where new techniques, best practices, products, and equipment will be explored,” remarked Michael Bocian, Vice President of Sales and Marketing for Darby. 
The CE webinars will also be available indefinitely through “On-Demand Classes” archived on the site.  “Darby is pleased to offer an accessible online learning platform for customers who are interested in broadening their industry skills and knowledge,” said Bocian.  “Our goal is to provide dental professionals accredited, engaging, and convenient online CE.”
Darby partnered with Viva Learning, an approved American Dental Association (ADA) CERP provider, for all of its web-based continuing education initiatives. 

Access Darby’s Online Continuing Education Program today by visiting www.DarbyDentalSupply.com and clicking on the Viva Learning CE Courses link.

Monday, May 23, 2011

DentalEZ® Group to Introduce Identafi® Technology

I have recently gotten an Identafi unit and I am putting it to the daily test. MJ

DentalEZ’s First Step in the Evolution Toward More Clinical Product Offerings

Malvern, PA (May 12th, 2011) – DentalEZ® Group, a supplier of innovative products and services for dental health professionals worldwide, will unveil its recent purchase of Identafi®, an oral cancer screening device used for the detection of oral mucosal abnormalities, at this year’s California Dental Association 2011 Spring Scientific Session.  Identafi will be on display in the exhibit hall at DentalEZ Group Booth #1160 from Thursday, May 12th to Saturday, May 14th. 

Now marketed under the StarDental® brand, Identafi detects biochemical and morphological changes in the cells of the mouth, throat, tongue, and tonsils that may potentially lead to oral cancer.  The small, cordless, handheld device uses a three-wavelength optical illumination and visualization system that allows dental professionals to identify oral mucosal abnormalities that may not be visible to the naked eye. 

Identafi is intended for use by dentists, hygienists, and oral surgeons.  The handheld device uses white, patented 405nm violet, and green-amber wavelengths of light to monitor biochemical changes with fluorescence, while morphological changes are monitored with reflectance.  The combined system of fluorescence and reflectance uses the body’s natural tissue properties as an adjunctive tool for oral mucosal examination. 

The combination of all three multi-spectral wavelengths can provide the clinician with more visual information, improved results over direct visual exam alone, and increased confidence for recommending subsequent biopsies. 

Using Identafi in the highly concentrated “White Light” mode, the dental professional can first perform a conventional tissue examination of the entire oral cavity.  The dental professional then switches to the patented 405-nanometer “Fluorescent Violet Light” to help identify any areas of abnormal tissue growth. 

The violet light enhances normal tissue’s natural fluorescence; however, suspicious tissue will appear dark in color due to its loss of fluorescence.  When suspect abnormalities are present, the instrument is switched to the unique “Green-Amber Reflectance Light,” which enhances normal tissue’s reflectance properties so the clinician may directly observe the difference between normal and abnormal tissue’s vasculature.  Studies indicate that abnormal tissue has a diffuse vasculature, whereas normal tissue vasculature is clearly defined.*

Additional features and benefits of the Identafi oral screening device include:

·         Patented 405nm violet wavelength offers optimal differentiation of suspicious lesions
  • Small, compact size coupled with an angled examination mirror allows easy inspection of hard-to-reach areas
  • Space-saving design fits any treatment room
  • No need for messy, bad-tasting dyes/solutions
  • Enhances perception of the dental practice as the “highest standard of care”
  • Dental reimbursement code can provide ROI for itself in as few as 8 weeks

“DentalEZ will offer a number of continuing education courses, educational seminars, and online resources geared toward educating dental professionals on the specific use of the Identafi technology and oral cancer in general, which is so important to the successful application of this product,” remarked Rick Gross, Senior Product Manager.  “Because the signs and symptoms of oral cancer often cannot be seen by the naked eye, Identafi technology enables dental professionals on the front line of oral cancer detection to do just that – identify changes in the mouth that may be a sign of something more serious.”

Identafi will be sold by DentalEZ Group’s national organization of trained sales representatives through its existing distributor network. 

For more information about Identafi, please call 866-DTE-INFO, or visit www.identafi.net. 

*Documents available upon request.

Saturday, May 21, 2011

Physics Forceps On The Doctors TV Show

I wanted to let you know that the Physics Forceps will be featured on the May 30th episode of The Doctors TV show.  The episode will feature innovative medical/dental products and the Physics Forceps will be featured in the “dental extraction” section.  In this segment, Dr. Richard Golden performs an atraumatic extraction and discusses the advantages of the Physics Forceps technique vs. conventional extraction procedures.

Curve Dental Announces Field Testing of Its Web-based Dental Imaging Software

Now accepting pre-orders for its Web-based imaging software scheduled for general release in Fall 2011

OREM, UT— Curve Dental, developers of Web-based dental software, announced the company would immediately begin field testing of its Web-based imaging software in select dental practices located in the United States and Canada in preparation for a Fall 2011 general release. The software will allow doctors to capture x-ray and intraoral images directly to the Web eventually using almost any sensor and camera. Dentists may pre-order the software now to lock in favorable discounts and pricing.
“When doctors capture x-ray images directly to the Web they completely circumvent the need for a server, eliminate backup worries and rid themselves of storage hassles,” said Matt Dorey, Founder and Managing Director of Curve Dental. “Being able to capture directly to the browser using the practice’s existing sensor or camera is a monumental breakthrough. While the number of different sensors you can connect to Curve is limited now, eventually our customers will be able to connect almost any sensor or camera to our software.” The company has secured cooperation from the manufacturers of the Kodak®, Sirona®, Schick®, Gendex®, Suni®, Imageworks™, Apixia™, XDR®, Owandy™, MyRay™, and Vatech™ sensors and plans to make its software compatible with these sensors as quickly as possible.
Curve Dental’s imaging software is native to its practice management software using a single database and set of code, which provides the doctor and staff with a consistent look and feel throughout the software. Native code also makes the software easier to learn and less demanding on a practice that must train new team members. A stand-alone version of the imaging software will also be available. “Because our imaging software is native to our practice management software it is more efficient and more stable than an integrated or bridged solution,” says Dorey. “Integrated or bridged solutions equate to separate databases, separate sources for technical support and two applications that work and look differently from each other.”
Pending FDA approval, Curve Dental is planning for a general release of the software in Fall 2011. Like the company’s practice management software the imaging software will also be sold on subscription basis. Interested practices can pre-order the software with a deposit and then use the software without charge until January 1, 2012.
About Curve Dental, Inc.
Founded in 2005, Curve Dental provides web-based dental software and related services to dental practices within the United States and Canada. The company is privately-held, headquartered in Orem, Utah with offices in Calgary, Canada and Dunedin, New Zealand. The company strives to make dental software less about computers and more about the user experience. Their creative thinking can be seen in the design of their software, that’s easy to use and Web-based. Dentists can call 888-910-4376 or visit www.curvedental.com for more information.


Thursday, May 19, 2011

Oral health-related quality of life and perceived dental needs in the United States

Journal of Public Health Dentistry

Early View (Online Version of Record published before inclusion in an issue)



Objectives: The purpose of this study is to investigate the oral health-related quality of life (OHRQOL) in the US population by sociodemographic factors, perception of dental needs, reported dental visits, and saliva indicators.
Methods: Data from the National Health and Nutrition Examination Survey (NHANES) 2003-2004 were used. NHANES measured OHRQOL by a modified version of the Oral Health Impact Profile.
Results: The study had 6,183 subjects who averaged an OHRQOL score of 2.8 points. About 40% had painful aching in the mouth during the last year on at least one occasion. Perceived need to relieve dental pain was the strongest risk factor for poor OHRQOL (resulting in a higher score by 5.2 points), followed by perceived need for a denture or feeling of dry mouth (each resulting in a higher score by about 2 points).
Conclusions: OHRQOL is the poorest among those with perceived dental needs especially those with the perceived need to relieve dental pain.

Wednesday, May 18, 2011

Sunstar Americas Introduces G∙U∙M® PerioShield™ Oral Health Rinse

 Oral Health Rinse Clinically Proven and FDA Approved to
 Reduce Plaque and Prevent Gingivitis

Chicago, IL (May 13, 2011) – Sunstar Americas, Inc., a proud member of the globally trusted Sunstar Group of Companies that manufactures and markets innovative dental care products under the Butler®, G∙U∙M®, and Guidor® brands, unveiled its New G∙U∙M® PerioShield Oral Health Rinse at this year’s California Dental Association (CDA) 2011 Spring Scientific Session. 

Representing a significant advance in the treatment and prevention of gingivitis treatment, G∙U∙M PerioShield represents a next generation solution to achieving and maintaining a healthy mouth.  G∙U∙M PerioShield Oral Health Rinse inhibits bacterial adhesion to tooth surfaces, serves as an adjunct to normal mechanical oral hygiene, and provides dental professionals and patients alike with a much-needed tool for the prevention of plaque and gingivitis that could lead to periodontitis.

Unlike other commercial antiseptic rinses currently on the market, G∙U∙M PerioShield provides a unique, plaque-blocking technology which forms a shield to help prevent bacterial plaque from adhering to tooth and gum surfaces.  This process of mechanically blocking the plaque from attaching and colonizing has been clinically proven to help prevent and treat gingivitis – a key predecessor of periodontitis.  The product is recommended for patients with heavy plaque and chronic gum inflammation.
“Sunstar is committed to providing dental professionals and their patients with a portfolio of products that meet the unique needs of the patient,” remarked Dan Descary, Managing Director, Sunstar Americas.  “The addition of PerioShield, with its unique plaque-inhibiting and clinically proven gingivitis-reducing properties, is a major step toward that goal.”

G∙U∙M PerioShield Oral Health Rinse contains the proprietary ingredient, delmopinol hydrochloride 0.2%, which not only prevents bacteria from forming the glucan/polysaccharide film necessary for adherence but also disrupts existing plaque biofilm, making it easier to remove.  It creates an invisible protective shield around the teeth and gingiva to continually repel plaque and pathogenic bacteria. 

Rinsing with G∙U∙M PerioShield Oral Health Rinse twice a day (morning and evening) for 30 seconds has been clinically proven to reduce plaque and treat gingivitis, which can help prevent  periodontitis*.  The product’s low 1.5% alcohol content is beneficial for patients who prefer or require a low-alcohol oral rinse, and is safe and effective for long-term use. 

G∙U∙M PerioShield Oral Health Rinse will be commercially available this August to Dental Professionals and to patients and consumers through their local pharmacy.  For more information about PerioShield Oral Health Rinse, visit www.sunstaramericas.com or GUMbrand.com.  

*Data available on request.

Tuesday, May 17, 2011

Kristin Chenoweth Lends Her Voice to New LISTERINE® WHITENING® Campaign

Captivating ‘Your Mouth Has Something To Say™’ Video Encourages Americans To Redefine Their Smiles While Giving Back to National Charity

MORRIS PLAINS, NJ – Emmy and Tony award winning actress and singer Kristin Chenoweth, known for her gorgeous grin and bubbly voice, has teamed up with the makers of LISTERINE® WHITENING® to give Americans something to smile about through an inventive campaign and video titled Your Mouth Has Something to Say. The energetic, short animated video, available online at www.listerine.com/yourmouth, showcases the powerful impact that smiles can have on people’s lives and aims to remind people that when you take good care of your smile, your smile will take good care of you. As part of this campaign, the makers of LISTERINE® WHITENING® are contributing $100,000 to America’s Toothfairy®, a national nonprofit organization dedicated to improving children’s oral health, and will give an additional $1 up to $5,000 each time someone views the new video.*

“I truly believe that keeping your smile looking white and beautiful is essential. It makes you feel so confident and of course, people notice when it looks good, too,” says Chenoweth, who lent her unmistakable voice to trailers promoting the video. “I’m very excited to be working with the makers of LISTERINE® and America’s Toothfairy® to celebrate our smiles and help children get the healthy smiles they deserve.”

Through dynamic animation that features surprising statistics and relatable anecdotes, the Your Mouth Has Something To Say video highlights the power of a smile and the positive impact it can have on confidence, happiness and even the immune system. The campaign stems from findings in a recent survey from the makers of LISTERINE® WHITENING® which found that nearly half of Americans surveyed don’t think their smiles are beautiful and 43 percent don’t smile in photos because of stained teeth. The video is designed to inspire change by painting a picture of the positive effects that something as simple as rinsing with a whitening mouthwash, such as LISTERINE® WHITENING® Plus Restoring, can have.

The survey also reveals that many Americans believe in the power of a smile. According to survey results, a vast majority of Americans believe that a healthy, white smile has the power to positively affect social connections and improve moods, while also associating healthy smiles with confidence (70 percent) and approachability (56 percent).

To learn more, and to view and share the video and spread smiles to your friends on Twitter and Facebook, please visit www.listerine.com/yourmouth.

*Viewing the video will not trigger a donation in the following states: Maine, Massachusetts, South Carolina and Alabama

Kristin Chenoweth is a paid spokesperson to Johnson & Johnson Healthcare Products Division of McNEIL-PPC, Inc.

Monday, May 16, 2011

Treatment of open apex teeth using two types of white mineral trioxide aggregate after initial dressing with calcium hydroxide in children

Dental Traumatology

Volume 27, Issue 3, pages 166–173 , June 2011

Abstract – Background: The clinical and radiographic success of two types of white mineral trioxide aggregate (MTA) as apical barriers in non-vital immature permanent incisors in children was investigated. Materials and methods: Following an initial dressing with calcium hydroxide, MTA apical barriers were placed in 22 non-vital traumatized, permanent incisors with open apices in 21 children (mean age 10 years). Teeth were alternately assigned to either white MTA ProRoot® or white MTA Angelus groups and treated by two operators. Clinical and radiographic reviews took place at baseline, 3 months and every 6 months thereafter. Two other calibrated, blinded examiners evaluated all radiographs. Examiner agreement was assessed using Kappa–Cohen tests. Results were analysed using Fisher’s exact tests and repeated measures anova. Results: The mean follow-up time was 23.4 months. There were no statistically significant differences in clinical or radiographic outcomes between the two groups. The overall clinical success and relative radiographic success rate was 95.5%. Statistically significant reduction in periapical pathosis was shown over time in both groups (< 0.05). A significant relationship was identified between non-divergent apical anatomy and ideal positioning of the MTA plug in all teeth (= 0.04). Interestingly, coronal discolouration was observed in 22.7% of teeth following white MTA placement. Conclusions: Apical barrier placement using both white MTA ProRoot® and white MTA Angelus after an initial calcium hydroxide dressing showed similar favourable clinical and radiographic outcomes.

Saturday, May 14, 2011

Concerns over unqualified teeth-whitening

The General Dental Council (GDC) is calling for tougher controls on who is allowed to carry out teeth-whitening in the UK.
Evlynne Gilvarry, from the GDC, says they are receiving complaints from people suffering from burning gums, sensitivity and damaged enamel after using some services in High Streets and shopping centres.
The council says teeth-whitening is a dental procedure so only dental professionals should administer it.
However, teeth-whitening companies say it is a cosmetic not dental process.

Watch the  BBC video

Friday, May 13, 2011

Maternal Periodontitis Treatment and Child Neurodevelopment at 24 to 28 Months of Age

PEDIATRICS Vol. 127 No. 5 May 2011, pp. e1212-e1220

Bryan S. Michalowicz, DDS, MSa, James S. Hodges, PhDb, Richard C. Lussky, MDc, Henrietta Bada, MDd, Twila Rawson, PhDe, L. Susan Buttross, MDe, Claudia Chiriboga, MD, MPHf, Anthony J. DiAngelis, DMD, MPHg, M. John Novak, BDS, LDS, PhDh, William Buchanan, DDS, MMdSci, Dennis A. Mitchell, DMDj, Panos N. Papapanou, DDS, PhDj
BACKGROUND Some maternal infections are associated with impaired infant cognitive and motor performance. Periodontitis results in frequent bacteremia and elevated serum inflammatory mediators.
OBJECTIVE The purpose of this study was to determine if periodontitis treatment in pregnant women affects infant cognitive, motor, or language development.
METHODS Children born to women who had participated in a previous trial were assessed between 24 and 28 months of age by using the Bayley Scales of Infant and Toddler Development (Third Edition) and the Preschool Language Scale (Fourth Edition). Information about the pregnancy, neonatal period, and home environment was obtained through chart abstractions, laboratory test results, and questionnaires. We compared infants born to women treated for periodontitis before 21 weeks' gestation (treatment group) or after delivery (controls). In unadjusted and adjusted analyses, associations between change in maternal periodontal condition during pregnancy and neurodevelopment scores were tested by using Student's t tests and linear regression.
RESULTS A total of 411 of 791 eligible mother/caregiver-child pairs participated. Thirty-seven participating children (9.0%) were born at <37 weeks' gestation. Infants in the treatment and control groups did not differ significantly for adjusted mean cognitive (90.7 vs 91.4), motor (96.8 vs 97.2), or language (92.2 vs 92.1) scores (all P > .5). Results were similar in adjusted analyses. Children of women who experienced greater improvements in periodontal health had significantly higher motor and cognitive scores (P = .01 and .02, respectively), although the effect was small (~1-point increase for each SD increase in the periodontal measure).
CONCLUSION Nonsurgical periodontitis treatment in pregnant women was not associated with cognitive, motor, or language development in these study children.

Prevalence of periodontitis and optimal timing of dental treatment in patients undergoing heart valve surgery

Interact CardioVasc Thorac Surg 2011;12:696-700. doi:10.1510/icvts.2010.255943
Yoshitsugu Nakamuraa,*, Osamu Tagusaria, Yoshimasa Seikea, Yujiro Itoa, Ken-ichi Saitob, Ryozo Miyamotob, Kiyoharu Nakanoc and Fumiaki Shikatad
a Department of Cardiovascular Surgery, NTT Medical Center Tokyo, 5-9-22 Higashigotanda, Shinagawa-ku, Tokyo 141-8625, Japan
b Department of Dentistry and Oral Surgery, NTT Medical Center Tokyo, 5-9-22 Higashigotanda, Shinagawa-ku, Tokyo 141-8625, Japan
c Department of Cardiovascular Surgery, Tokyo Women's Medical University Medical Center East, 2-1-10 Nishiogu, Arakawa-ku, Tokyo, Japan
d Department of Cardiovascular Surgery, Ehime University School of Medicine, Toon, Ehime, Japan
*Corresponding author. Tel.: +81-3-3448-6565 (Business), +81-3-5421-3567 (Home); fax: +81-3-3448-6566.

E-mail address: ystgnkmr@gmail.com (Y. Nakamura).
We investigated the prevalence, risk factors, and optimal timing of treatment for advanced periodontitis in patients undergoing elective heart valve surgery. Dental examinations were given to 209 patients (aged 65±10 years) scheduled for valve surgery. Patients with no or mild periodontitis were assigned as controls (n=105). Patients with advanced periodontitis underwent tooth extraction and curettage (n=104), 68 of whom underwent tooth extraction within two weeks (short wait) and 36 of whom underwent extraction longer than two weeks, before surgery. The three groups (control, short, and long wait) were similar in age, gender, diseased valve, and type of surgery received. The average number of teeth extracted was 2.3±2.3. In both univariate and multivariate analysis, risk factors for advanced periodontitis were history of smoking and heart failure. No complications arose from the extractions. Length of postoperative hospital stay, intrafebrile days, white blood cell count and serum C-reactive protein (assessed at postoperative days 1, 3 and 7) were similar among the three groups. During the mean follow-up period of 60±16 months, no patient developed prosthetic valve endocarditis, and there were no postoperative deaths. In conclusion, we found no evidence that receipt and timing of dental treatment affected surgical success rates and postoperative course.

Wednesday, May 11, 2011

Dental Product Promotions App Launches

This app is from our friends at Dental Product Shopper. I have already downloaded it to my Android Tablet and it is prety cool! MJ

MANALAPAN, NJ, May 10, 2011-Integrated Media Solutions recently launched its Dental Product Promotions app for the iPhone and Android. In a continuing effort to connect dental professionals with dental product manufacturers, Integrated Media Solutions created a user-friendly application that allows dentists, hygienists, and assistants to browse current promotions by manufacturer, product category, or featured promotions. In addition, users can save their favorite promotions, e-mail them to themselves or friends, and share by text message.
"More and more, dental professionals are using the internet and mobile apps to research and buy products," said Dave Branch, President of Integrated Media Solutions. "We knew this would be a great way to ensure dentists are aware of the new products and promotions being offered by their favorite manufacturers."
The application can be downloaded at http://dps.li/app.

Tuesday, May 10, 2011

Physical properties of current dental nanohybrid and nanofill light-cured resin composites

Dental Materials

Volume 27, Issue 6, Pages 598-607 (June 2011)


The purpose of this work was the detailed study of sorption characteristics of water or artificial saliva, the determination of flexural strength and the flexural modulus, and the study of the thermal stability of some current commercial dental light-cured nanocomposites containing nano-sized filler particles.
Three nanohydrid dental composites (Tetric EvoCeram (TEC), Grandio (GR) and Protofill-nano (PR)) and two nanofill composites (Filtek Supreme Body (FSB) and the Filtek Supreme Translucent (FST)) were used in this work. The volumetric shrinkage due to polymerization was first determined. Also the sorption, solubility and volumetric increase were measured after storage of composites in water or artificial saliva for 30 days. The flexural strength and flexural modulus were measured using a three-point bending set-up according to the ISO-4049 specification, after immersion of samples in water or artificial saliva for 1 day or 30 days. Thermal analysis technique TGA method was used to investigate the thermal stability of composites.
GR and TEC composites showed statistically no difference in volumetric shrinkage (%) which is lower than the other composites, which follow the order PR<FSB<FST. The amount of sorbed water and solubility is not statistically different than those in artificial saliva. In all the composites studied the amount of water, which is sorbed (% on composite) is not statistically different than the amount of water, which is desorbed and follows the order: GR<TEC<PR<FSB<FST. After immersion in water for 1 day the highest flexural strength showed the FSB and the lowest TEC. GR, PR and FST showed no statistically different flexural strength. The flexural modulus of composites after immersion for one day follows the order TEC<PR≤FST<FSB<GR.
Among the composites studied, Grandio had the lowest polymer matrix content, consisting mainly of Bis-GMA. It showed the lowest polymerization shrinkage and water sorption and the highest flexural strength and flexural modulus after immersion in water or artificial saliva for 30 days. The water and artificial saliva generally showed the same effect on physical properties of the studied composites. Thermogravimetric analysis gave good information about the structure and the amount of organic polymer matrix of composites.

Monday, May 09, 2011

Are Panoramic Radiographs Reliable to Diagnose Mild Alveolar Bone Resorption?

ISRN Dentistry
Volume 2011 (2011), Article ID 363578, 4 pages

It is extremely important to assess variations between the most used radiographs in dental practice, since minimum distortion on obtained images may change diagnosis, treatment plan, and prognosis for the patient. For this, the distance between the enamel-cementum junction and the alveolar bone crest was measured on conventional and digitized periapical, bitewing, and panoramic radiographs and compared among them. From a total of 1484 records, 39 sets of radiographs that fulfilled the inclusion criteria of the study sample were selected. The measurements were grouped according to the intensity of bone loss.  Statistically significant difference was found in the averages of the measurements assessed in radiographs with absence of bone loss between conventional panoramic and periapical radiographs, between digitized panoramic and periapical radiographs and between digitized bitewing and panoramic radiographs. By analyzing the results of this work and considering the research protocol used, one can conclude that small losses in height of alveolar bone crest observed in panoramic radiographs should be cautiously evaluated, as they may be overestimated.

Saturday, May 07, 2011

Dirty mouths lead to broken hearts

IMAGE: Rita Jablonski, assistant professor of nursing, Penn State, shows an oral hygiene approach she helped develop for patients with dementia on an actor refusing care.

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Nurses who care for patients with dementia now have a tailored approach to dental hygiene for their charges, thanks to a pilot study by a team of nurses.
"Poor oral health can lead to pneumonia and cardiovascular disease as well as periodontal disease," said Rita A. Jablonski, even though these illnesses are not usually associated with the mouth. According to Jablonski, assistant professor of nursing, Penn State, persons with dementia resist care when they feel threatened. In general, these patients cannot care for themselves and need help.
Jablonski and her team introduced an oral hygiene approach called Managing Oral Hygiene Using Threat Reduction (MOUTh) specifically for dementia patients. Many of their strategies focus on making the patient feel more comfortable before and while care is provided, the researchers report in the current issue of Special Care in Dentistry.
"We have come up with 15 strategies -- techniques to help reduce threat perception," said Jablonski. These strategies include approaching patients at eye level if they are seated, smiling while interacting, pantomiming, and guiding patients to perform their own care by placing a hand over the patient's hand and leading.

IMAGE: Rita Jablonski, assistant professor of nursing, Penn State, demonstrates how to use the Managing Oral Hygiene Using Threat Reduction method on an actor, while inserting dentures.

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People with dementia are often no longer able to distinguish low or non-threatening situations from highly threatening situations. This happens when the parts of the brain that control threat perception -- particularly the fight, flight or freeze responses -- begin to deteriorate. The amygdala is the part of the brain that houses the fear response. The hippocampus and cerebral cortex receive and send messages to the amygdala, telling it how to react.
"Think of the hippocampus, cerebral cortex and amygdala as being in the woods," said Jablonski. "In a person with dementia, the path in the woods is blocked with tumbleweeds and the message from the cortex and hippocampus can't get to the amygdala." In turn, patients with dementia often react to something as intimate as a nurse brushing their teeth as a perceived threat.
In the past 30 years the number of nursing-home residents who still have their own teeth has risen significantly. Many of these people need assistance with their dental hygiene, as well as with other hygiene.
Jablonski and her team conducted a pilot study with seven people who had either moderate or severe cases of dementia. The researchers used the MOUTh technique on the subjects for two weeks, recording the state of the patients' mouths and how the patients reacted throughout the study.

IMAGE: Rita Jablonski, assistant professor of nursing, Penn State, uses an actor to demonstrate Managing Oral Hygiene Using Threat Reduction, a technique she helped develop for dementia patients.

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At the beginning of the study all seven subjects had poor oral health, as determined by the Oral Health Assessment Tool. Eight categories concerning oral health are scored between zero and two. The lower the score the healthier the mouth. The average score for the subjects at the start of the study was 7.29. By the end of the study the average score was 1.00.
"To my knowledge, we are the only nurses in the country who are looking at ways to improve the mouth care of persons with dementia, especially those who fight and bite during mouth care," said Jablonski. "Our approach is unique because we frame resistive behavior as a reaction to a perceived threat."