Thursday, August 31, 2017

Necrotising Ulcerative Gingivitis: A Literature Review

Oral Health Prev Dent 15 (2017), No. 4  (01.09.2017)

Page 321-327, doi:10.3290/j.ohpd.a38766, PubMed:28761942




Purpose: The literature surrounding necrotising ulcerative gingivitis (NUG) is extensive, yet the rare nature of this disease means that there is a lack of good quality research available. This paper aims to scrutinise the literature and provide an up-to-date summary of the available information.

Materials and Methods: A literature search was performed electronically using the Cochrane Library, Ovid Medline, Embase, PubMed Clinical Queries and Google Scholar. Keyword searches were carried out, utilising MeSH terms and free text. English language articles primarily were included, with key foreign language (French and German) articles included where possible from the 1900s to the present day.

Results: Necrotising ulcerative gingivitis is a rare disease (prevalence <1 a="" acute="" an="" and="" associated="" bacterial="" basis="" be="" can="" case-by-case="" destructive="" extent="" individual="" infection.="" infection="" is="" it="" must="" nug="" of="" on="" opportunistic="" p="" painful="" predominantly="" presentation.="" provided="" spirochetes.="" tailored="" the="" to="" tolerate="" treatment="" what="" which="" with="">
Conclusion:
Although there is low prevalence of NUG, its importance should not be underestimated as one of the most severe responses to the oral biofilm. Risk factors must be investigated and addressed. Treatment should consist of gentle superficial debridement, oral hygiene instruction and prescription of mouthwash and antibiotics in severe cases.

Wednesday, August 30, 2017

Retention Rate of Four Different Sealant Materials after Four Years

Oral Health Prev Dent 15 (2017), No. 4  (01.09.2017)

Page 307-314, doi:10.3290/j.ohpd.a38743, PubMed:28752157


Purpose: To test the hypotheses: 1) cumulative survival rates of fully and partially retained high-viscosity glass-ionomer (HVGIC) ART sealants with heat application and glass-carbomer sealants on occlusal and free-smooth surfaces are both higher than that of resin sealants; 2) cumulative survival rate of fully and partially retained high-viscosity glass-ionomer ART sealant with heat application on occlusal and free-smooth surfaces is higher than that of comparable ART sealants without heat application.

Materials and Methods: The block-randomised clinical trial covered 405 eight-year-old children. The HVGIC was Ketac Molar Easymix, the glass carbomer was GlassCarbomer and the resin sealant was Clinpro. Retention rates of sealants on occlusal and free-smooth surfaces using conventional and modified categorisation (fully and partially retained sealants vs those completely lost [at least one-third of surface re-exposed]) were the dependent variables. The Kaplan-Meier survival method was used.

Results: The cumulative survival rate of completely and partially retained resin sealants on occlusal (81.2%) and free-smooth (81%) surfaces after 4 years was statistically significantly higher, and that of glass-carbomer sealants (10.8% and 21.1%, respectively) was statistically significantly lower than those of the other sealant groups. There was no statistically significant difference in survival rates of completely and partially retained high-viscosity glass-ionomer ART sealants with (56% for both surfaces) or without heat application (56%) on occlusal and free-smooth surfaces (55.7% and 59.1%, respectively). 

Conclusions:
Resin sealants had the highest and glass-carbomer sealants the lowest retention rate after 4 years. Application of heat to high-viscosity glass-ionomer ART sealants did not result in a significantly higher sealant retention rate. Use of the modified categorisation for determining sealant retention is advocated.

Tuesday, August 29, 2017

Brasseler USA® Introduces Expanded Handpiece Repair Service

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SAVANNAH, GA (August 21, 2017) – Brasseler USA®, a leading manufacturer of quality instrumentation, is pleased to unveil an expanded handpiece repair service with a focus on premium parts and fast turnaround times. The offering will include handpiece repairs for all major brands.

Brasseler USA has been repairing both medical and dental handpieces since 1997. The company’s recently expanded handpiece service plan will now offer a more comprehensive roster of repairs including high speed air handpieces, low speed air attachments, low speed motors and electric attachment handpieces.

The expansion will also specialize in fast turnaround times for standard repairs with most repairs completed within 24-48 hours of receipt, and same-day repairs on high speed air handpieces. Premium parts used for all repairs have been engineered and tested to meet Brasseler’s unparalleled standards of high quality along with industry-leading warranty coverage.

“Our customers have been asking for us to broaden our service offerings beyond Brasseler handpieces,” stated Ronnie Hiers, Handpiece Marketing Manager at Brasseler USA. “They are looking for fast, premium repair services at an affordable price and we feel extremely confident that this service goes well beyond expectations.”

For more information about the Brasseler Handpiece Repair Service, please visit www.BrasselerUSA.com/Repair  or call 800-841-4522.


About Brasseler USA®

Brasseler USA® is a leading ISO Certified healthcare company, providing quality instrumentation to healthcare professionals for use in restorative dentistry, endodontics, oral surgery and oral hygiene. Over the past 40 years, Brasseler USA has developed a reputation as an innovative market leader in diamonds, carbides, polishers, endodontics, hand instruments and handpieces. Today, Brasseler USA offers the most comprehensive assortment of instruments and handpieces under one brand in the world. For more information, please visit www.BrasselerUSA.com.  

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Monday, August 28, 2017

Impression evaluation and laboratory use for single-unit crowns: Findings from The National Dental Practice-Based Research Network.

J Am Dent Assoc. 2017 Aug 16. pii: S0002-8177(17)30544-5. doi: 10.1016/j.adaj.2017.06.015. [Epub ahead of print]


Abstract

BACKGROUND:

Objectives were to determine the likelihood that a clinician accepts an impression for a single-unit crown and document crown remake rates.

METHODS:

The authors developed a questionnaire that asked dentists about techniques used to fabricate single-unit crowns. The authors showed dentists photographs of 4 impressions and asked them to accept or reject each impression. The authors correlated answers with dentist and practice characteristics. Other questions pertained to laboratory use and crown remake rates.

RESULTS:

The response rate was 83% (1,777 of 2,132 eligible dentists). Of the 4 impressions evaluated, 3 received consistent responses, with 85% agreement. One impression was more equivocal; 52% accepted the impression. The likelihood of accepting an impression was associated significantly with the clinician's sex, race, ethnicity, and practice busyness. Clinicians produced 18 crowns per month on average, and 9% used in-office milling. Most dentists (59%) reported a remake rate of less than 2%, whereas 17% reported a remake rate greater than 4%. Lower remake rates were associated significantly with more experienced clinicians, optical impressions, and not using dual-arch trays.

CONCLUSIONS:

Although dentists were largely consistent in their evaluation of impressions (> 85%), nonclinical factors were associated with whether an impression was accepted or rejected. Lower crown remake rates were associated with more experienced clinicians, optical impressions, and not using dual-arch trays.

PRACTICAL IMPLICATIONS:

These results provide a snapshot of clinical care considerations among a diverse group of dentists. Clinicians can compare their own remake rates and impression evaluation techniques with those in this sample when developing best practice protocols.

Friday, August 25, 2017

Has Your Office Got Its Social Media Up and Running?

Have you wanted to get your office up and running with Facebook or Twitter but just can't seem to get started? That is a common problem in many offices and my friend Rachel Mele has the perfect solution!

Rachel has a  new book out to help


 There are a full years worth of social media posts to make the job easy. The posts are funny, educational and informative. Anyone can get there dental social media account up and running daily with a minimal effort. The book is available on Amazon.

Now the best part, 100% of the proceeds from book sales go to Oral Cancer Cause, a non-profit which improves the quality of life for oral cancer patients through financial support so they may face the world with peace and dignity during and after medical treatment.

So not only do you get great social media posts for your office but you get to help people with oral cancer too!

Buy It Today!

Thursday, August 24, 2017

Come Join Me and A Host of Others in Sioux Falls SD For Some Great CE!

Looking for a great CE Experience? This will be a very informative small group event. This is not a commercial driven event. No Sponsors! Hotels are low cost and easy access from around the midwest!

Register Here

The following workshops will be presented
Thu, November 16, 2017
8:30 AM – 5:00 PM CST

There is a 2 Day Surgical Implant Class on mini and conventional implants, November 17-18 that you may also be interested in?
Learn More

Workshops:

 Each workshop is $300 and being held on Thursday prior to the live surgical course. You do not have to be signed up for the live surgical course to attend workshops.

1) (Blue Sky Bio Software Course) Learn how to use blue sky bio software to make a surgical guide for under $30. (Guest instructor Dr. Jerry Yu)
Learn how to scan your patient, design a guide once scanned, and print a guide with a 3d printer for use in the mouth. Multiple 3d printers on hand.

2) (PRF/PRP Phlebotomy) Learning Phlebotomy with practice on each other, Types of prf and their uses. (Guest Instructor Dr. Matt Lasorsa) We will have multiple machines here to see and practice with and go through all the concepts of prp, prf, and when.

3) (Try before you buy!) Digital Caries Diagnostics and Diode Laser Hands On (Guest instructor Dr. Marty Jablow)


Learn and try before you buy the following
The benefits of digital caries diagnostics and how you can truly monitor teeth and educate your patients. Hands On with:
Air Techniques Cam-X Spectra
Acteon’s Soprolife
Soprocare cameras
Diagnodent

Diode Laser Hands On 


Learn the varied procedures that a diode laser can be used for along with basic information and safety.
3 different low cost diode lasers will be available to try the Denmat Sol, AMD Picasso Lite and Denmat NV handheld

Wednesday, August 23, 2017

A novel non-surgical method for mild peri-implantitis- a multicenter consecutive case series

International Journal of Implant Dentistry20173:38
Received: 8 April 2017
Accepted: 13 July 2017
Published: 3 August 2017





Abstract

Aim

The aim of the present study was to evaluate the effect on peri-implant mucosal inflammation from the use of a novel instrument made of chitosan in the non-surgical treatment of mild peri-implantitis across several clinical centers.

Materials and methods

In this 6-month multicenter prospective consecutive case series performed in six different periodontal specialist clinics, 63 implants in 63 patients were finally included. The subjects had mild peri-implantitis defined as radiographic bone loss of 1–2 mm, pocket probing depth (PPD) ≥4 mm and a positive bleeding on probing (mBoP) score. The patients were clinically examined at baseline and after 2, 4, 12 and 24 weeks, and radiographs were taken at baseline and at 3 and 6 months. Treatment of the implants with the chitosan brush seated in an oscillating dental drill piece was performed at baseline and at 3 months. Reductions in the clinical parameters (PPD and mBoP) were compared between baseline and the later examination time points.

Results

Significant reductions in both PPD and mBoP were observed at all time points compared with the baseline clinical measurements (p < 0.001). The mean PPD and mBoP at baseline were 5.15 mm (4.97; 5.32) and 1.86 (1.78; 1.93), respectively, whereas the mean PPD and mBoP at 6 months were 4.0 mm (3.91; 4.19) and 0.64 (0.54; 0.75), respectively. Stable reductions in PPD and mBoP were evident up to 6 months after the initial treatment and 3 months after the second treatment. All 63 implants were reported to have stable radiographic levels of osseous support.

Conclusions

This case series demonstrated that an oscillating chitosan brush is safe to use and seems to have merits in the non-surgical treatment of dental implants with mild peri-implantitis. To measure the effectiveness of the method, a multicenter randomized clinical trial needs to be undertaken.

Tuesday, August 22, 2017

Kulzer acquires exclusive rights to market ReLeafTM and LinguaGuardTM products



South Bend, IN/08.14.2017. Kulzer announced today that it has acquired the rights to become the exclusive marketer of Innovative Dental Technologies’ ReLeaf and LinguaGuard product lines. The products will be sold through Kulzer’s current network of dental distributors.
ReLeaf is an innovative HVE System that connects easily to existing dental vacuum systems and provides easy, efficient, and comfortable hands-free dental suction during dental procedures. It allows patients to move their head and even communicate without affecting suction. Importantly, ReLeaf caters to a wide range of patients by fitting in a wide array of dental anatomies. Rather than relying on the shape of the arch or the orientation of the teeth, ReLeaf uses the cheek and vestibule area for support.

Invented by a former US Army Dental Corps dentist based in Germany, LinguaGuard is an innovative disposable add-on that allows clinicians to retract and protect the tongue during suction by attaching it to the vented end of the HVE straw. As a result, instead of having to use one hand to hold the tongue with a mirror and the other hand to hold the HVE straw, LinguaGuard delivers the same levels of protection, stability, and suction in a single apparatus held by one hand. This allows a free hand to reduce chair-side working time and improve the overall quality of care.
“The ReLeaf and LinguaGuard product lines are perfect complements to our portfolio of innovative technologies that enhance practice productivity and patient comfort,” said Jeremy Thomas, Kulzer’s President, USA & Canada and Head of the Americas Region. “We look forward to significantly increasing awareness and use of these outstanding products through the exceptional support of both our marketing team and our distributor network.” 

Learn more about ReLeaf and LinguaGuard products at www.releafdental.com. Learn more about Kulzer at www.kulzerUS.com


© 2017 Kulzer, LLC. All Rights Reserved.
Kulzer, LLC
As one of the world’s leading dental companies, Kulzer has been a reliable partner for all dental professionals for more than 80 years. Whether aesthetic or digital dentistry, tooth preservation, prosthetics or periodontology – Kulzer stands for trusted and innovative dental products. With optimal solutions and services, Kulzer aims to support its customers in restoring their patients’ oral health in a safe, simple and efficient way. For this purpose, 1500 employees work in 26 locations in the field of research, manufacture and marketing.
Kulzer is part of the Mitsui Chemicals Group. The Japanese Mitsui Chemicals Inc. (MCI) based in Tokyo owns 131 affiliates with more than 13,400 employees in 27 countries. Its innovative and functional chemical products are as much in demand in the automotive, electronics and packaging industries as in environmental protection and healthcare.
Up to July 2017, Kulzer operated under the name of Heraeus Kulzer. By changing the name, Kulzer will focus on its strengths that have made it successful: loyal partnerships with users, distributors and universities, and, above all, highest quality materials, innovations and a spectrum of services that is unique in the market.

Monday, August 21, 2017

Blast into your day with the Out of This World Fun Run at Dentsply Sirona World

 The countdown is on for some intergalactic fun at the Ultimate Dental Meeting 2017!

CHARLOTTE, N.C. (Aug. 9, 2017) – Dentsply Sirona continues the popular tradition of hosting a fun run at the annual event for Dentsply Sirona World attendees. This intergalactic space race takes off on the morning of Saturday, Sept. 16, at 7 a.m.
Per tradition, attendees are encouraged to arrive decked out in their favorite intergalactic gear and free their inner alien.  Participants will meet at the bridge in front of the Venetian hotel, and the run will begin on Las Vegas Blvd. Runners will make their way down the Strip for 1.5 miles, turn around at Planet Hollywood and make their way back to the Venetian for a total of 3 miles.

Sponsored by Clear Correct, the fun run is an untimed event, so participants are encouraged to complete the activity at their own pace. Las Vegas Police Officers, as well as Dentsply Sirona World staff members, will be on site directing the flow of runners.
SIROWORLD’s Go for the Gold Fun Run in Orlando and CEREC 30’s Hair Band 5k both attracted hundreds of attendees, and the Out of This World Fun Run is expected to welcome an even greater number of (extraterrestrial) attendees.
Early registration for fun run participants is highly encouraged, reducing onsite registration Saturday morning. Attendees who are already registered for Dentsply Sirona World can log back in to their registration account and register for the activity. For those who have not already registered for the three-day event, the fun run can be added during the event registration process.
Located at The Venetian and The Palazzo from Sept. 14-16, Dentsply Sirona World 2017 combines industry-leading education with extraordinary entertainment. Register today for the second annual Ultimate Dental Meeting and be among the thousands of dental professionals leading the charge in making dentistry better, safer and faster.

For more information on Dentsply Sirona World 2017 and to learn more about registration options, visit www.dentsplysironaworld.com. For questions, contact the event help desk by email at events@dentsplysironaworld.com or by phone at 1.844.462.7476.



Friday, August 18, 2017

NuSmile Announces Inaugural NuSmile Summit


CE event designed to take pediatric dentistry to “the next level” in a beautiful setting

HOUSTON, TEXAS, August 8, 2017—NuSmile Ltd., the worldwide leader in pediatric esthetic restorative dentistry, announced today that the first-ever NuSmile Summit will be held January 19-20, 2018 in Clearwater Beach, Florida. The event’s format allows attendees to create their own schedule by choosing the specific courses that best meet their individual needs. Attendees will receive up to 16 continuing education credits from courses offered by several of the world’s most respected experts in all facets of pediatric dentistry.



“The 2018 NuSmile Summit is designed to help pediatric dentists and general practitioners who treat pediatric patients keep abreast of the latest advances in pediatric dentistry,” said Diane Johnson Krueger, NuSmile founder and CEO. “Our topics and speakers have been carefully chosen to enable attendees to take their practices to the next level regarding both treatment and practice management.”

“We’re very excited about the line-up of distinguished experts we’ve been able to assemble to lead our seminars, including several directors from the renowned Institute for Pediatric Dentistry,” said Mike Loessberg, NuSmile Director of Sales, U.S. and Canada. “The theme of the NuSmile Summit is Bringing You Next Level Education to reflect our passion for helping dentists significantly enhance both the pediatric treatment their practices provide and the productivity and profitability their practices deliver.”

One of the Summit’s highlights will be the acclaimed “Zirconia REINVENTED” hands-on workshop, in which Dr. David Salar and Dr. David Evans will provide comprehensive training in the art of placing zirconia crowns for every primary tooth. Other Next Level Treatment courses include “Radiographic Findings of Pediatric Diseases” by Dr. Shailesh Kottal, “Sedation Protocol” by Dr. Steven Wilson, and “New Approaches to Pediatric Pulp Therapy” workshop by Dr. Jessica Lee.

Next Level Practice Management courses include “Strategies for Practice Growth” by Scott Lauer, “25 Things That Changed My Practice” by Dr. William Waggoner, “Overview of Employment and Compensation Issues” by Brian Colao, and “Ready to start your own practice, where to begin?” by Matthew Veatch.

The 2018 NuSmile Summit will take place at the luxurious Grand Wyndham Resort in Clearwater Beach, Florida, recently named the “#1 Beach in the U.S.” by Trip Advisor.
Dentists may pre-register for the event by calling 800-346-5133 or visiting nusmile.com.


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About NuSmile
Founded in 1991 in Houston, Texas by Diane Johnson Krueger, NuSmile is the worldwide leader in pediatric esthetic restorative dentistry. Shortly after its founding, the company invented its first esthetic pediatric crown; more than 4 million have been used in restorations in the 25 years since. The company’s current offerings include the NuSmile ZR Zirconia crown system, featuring Try-In crowns to prevent saliva/blood contamination and NuSmile BioCem® BioActive Cement for exceptional bond strength and handling; NuSmile Signature Pre- veneered crowns; NuSmile SSC Pre-contoured crowns; and NuSmile NeoMTA® pulp therapy medicament. NuSmile prides itself on its passion for customer care, its unwavering commitment to research, and its unmatched support for American Academy of Pediatric Dentistry (AAPD), the International Association of Pediatric Dentistry (IAPD), the Canadian Academy of Pediatric Dentistry/Académie Canadienne de Dentisterie Pédiatrique (CAPD/ACPD), the Institute for Pediatric Dentistry (IPD) and several other organizations dedicated to the dental care of children and the dentists who serve them. 

Thursday, August 17, 2017

Do You Want A Copy of George Washington's False Teeth?


Description

Wednesday, August 16, 2017

Biomechanical behavior of titanium and zirconia frameworks for implant-supported full-arch fixed dental prosthesis


Abstract

Background

The biomechanical behavior of implant-supported titanium and zirconia full-arch fixed dental prosthesis (FAFDP) frameworks require further investigation.

Purpose

Strains transferred by implant-supported titanium (Ti) and zirconia (Zr) FAFDP frameworks were analyzed.

Materials and Methods

Maxillary 14-unit FAFDPs supported by 6 implants and 12-unit FAFDPs supported by 4 implants were tested. One-piece frameworks were fabricated by computer-aided design/computer-aided manufacturing. Four groups were divided (n = 3): G1, Ti-6 implants; G2, Zr-6 implants; G3, Ti-4 implants; G4, Zr-4 implants. A 250 N single-point load was applied on the second premolar. A three-dimensional digital image correlation system recorded framework and maxilla model surface deformation.

Results

The following strains (μS) averaged over the length of the second premolar were calculated: frameworks, G1 (321.82 ± 111.29), G2 (638.87 ± 108.64), G3 (377.77 ± 28.64), G4 (434.18 ± 132.21); model surface, G1 (473.99 ± 48.69), G2 (653.93 ± 45.26), G3 (1082.50 ± 71.14), G4 (1218.26 ± 230.37). Zirconia frameworks supported by 6 implants (G2) presented higher surface strains (P < .05). FAFDPs with titanium frameworks transferred significantly lower strains to the supporting maxilla when 6 implants were used (G1) (P < .05). Both framework materials transferred similar strains when supported by 4 implants (G3 and G4) (P > .05).

Conclusions

Zirconia frameworks supported by 6 implants showed higher strains. FAFDPs supported by 6 implants transferred less strains to the supporting maxilla, irrespective of framework material.

Tuesday, August 15, 2017

Comparison of periodontal evaluation by cone-beam computed tomography, and clinical and intraoral radiographic examinations

Oral Radiology
pp 1–11

Abstract

Objectives

Cone-beam computed tomography (CBCT) has been widely used in many fields of dentistry. However, little is known about the accuracy of CBCT for evaluation of periodontal status. The objective of this study was to compare and correlate periodontal assessments among CBCT, clinical attachment loss (CAL) measurement, and periapical (PA)/bitewing (BW) radiography.

Methods

Eighty patients (28 males, 52 females; age range, 19–84 years) from the University of Texas School of Dentistry at Houston were evaluated retrospectively. Measurements were taken on the central incisors, canines, and first molars of the right maxilla and left mandible. CAL was extracted from periodontal charts. The radiographic distance from the cementum–enamel junction (CEJ) to the alveolar crest was measured for tooth mesial and distal sites on PA/BW and CBCT images using MiPacs software and Anatomage Invivo software, respectively. One-way ANOVA and Pearson analysis were performed for statistical analyses.

Results

The CEJ–crest distances for CBCT, PA/BW, and CAL were 2.56 ± 0.12, 2.04 ± 0.12, and 2.08 ± 0.17 mm (mean ± SD), respectively. CBCT exhibited larger values than the other two methods (p < 0.05). There were highly significant positive correlations among CBCT, PA/BW, and CAL measurements at all examined sites (p < 0.001). The Pearson correlation coefficient was higher for CBCT with CAL relative to PA/BW with CAL, but the difference was not significant (r = 0.64 and r = 0.55, respectively, p > 0.05).

Conclusions

This study validates the suitability of CBCT for periodontal assessment. Further studies are necessary to optimize the measurement methodology with CBCT.

Monday, August 14, 2017

Dentsply Sirona World 2017 selling out fast

Come and join me at this years SiroWorld! MJ
Sign up now to reserve your spot at the Ultimate Dental Meeting before it’s too late!

CHARLOTTE, N.C. (Aug. 8, 2017) – Only a limited number of registrations remain for Dentsply Sirona World in Las Vegas. With tracks including Business and Practice Management, CEREC®, Imaging, Restorative, Endodontic, Orthodontic and more, this educational festival is designed to provide the highest caliber of education to all dental practitioners, including General Practitioners and specialists.
Kicking off on Thursday, Sept. 14, and continuing through Saturday, Sept. 16, at The Venetian and The Palazzo, Dentsply Sirona World is the ultimate educational festival for dental professionals to gain comprehensive clinical and business content throughout the day and enjoy remarkable entertainment in the evening.
Registration to Dentsply Sirona World includes access to all General Sessions and Breakout Sessions, along with the social events- including the workout session with Beachbody Super Trainer Joel Freeman and the Evening of Espionage closing party at Tao Nightclub- and all of the celebrity entertainment like the exclusive concert by Grammy-winning band Imagine Dragons.
There are multiple registration types†, including doctor, staff/spouse/guest, technician, military and government, etc. Visit www.dentsplysironaworld.com for a full list of registration options and pricing.

To register now, visit www.dentsplysironaworld.com and sign up before it’s too late. For any event questions, please contact the help desk by email at events@dentsplysironaworld.com or by phone at 844.462.7476.

Friday, August 11, 2017

Effect of conventional irrigation and photoactivated disinfection on Enterococcus faecalis in root canals: An in vitro study




 Abstract

 
Aims: A study was done to evaluate the antimicrobial efficacy of sodium hypochlorite (NaOCl) and photoactivated disinfection (PAD) on Enterococcus faecalis.
 
Settings and Design: Random sampling, in-vitro study.

Subjects and Methods: Access opening and biomechanical preparation were performed on fifty freshly extracted mandibular second premolars. The specimens were sterilized; 15 μm of E. faecalis was inoculated into each canal and incubated at 36°C for 24 h. Later, specimens were randomly divided into two groups of fifty each and following procedures was carried out: (i) conventional irrigation with 2.25% NaOCl (ii) PAD using diode laser, and toluidine blue photosensitizer. Samples were collected from each canal using sterile paper points which were deposited in brain heart infusion broth, and microbiological evaluation was carried out.

Statistical Analysis Used: Student's t-test was used to find the significant difference in the reduction of colony forming unit (CFU) between the groups.

Results: The mean CFUs of the two groups showed statistically significant difference (P = 0.001). Improved antibacterial efficacy was seen with PAD group compared to conventional NAOCL irrigation.

Conclusions: NaOCl alone was not effective in eliminating E. faecalis completely from the root canals. PAD compared to conventional irrigation showed the best results in removing E. faecalis from root canals.



Balakrishna N, Moogi P, Kumar G V, Prashanth B R, Shetty NK, Rao KR. Effect of conventional irrigation and photoactivated disinfection on Enterococcus faecalis in root canals: An in vitro study. J Conserv Dent 2017;20:125-8

Thursday, August 10, 2017

Is cone beam computed tomography accurate for post-operative evaluation of implants? an in vitro study



Abstract

Objective

To evaluate the accuracy of CBCT images for bone/implant interface diagnosis in comparison to periapical radiographs.

Study Design

Titanium implants were inserted in 74 bovine rib blocks in intimate contact to the bone walls, and with a gap of 0.125 mm (simulating a failure in the osseointegration process). Periapical radiographs were taken with conventional film, and CBCT scans were acquired with i-CAT (0.2mm and 0.125mm voxel) and Kodak (0.2mm and 0.076mm voxel) units. Three examiners evaluated the images using a 5-point scale. Diagnostic accuracy was analyzed through sensitivity, specificity, and the area under the ROC curve (AUC) with 95% confidence intervals (CI). Intra- and inter-examiner agreements were analyzed through Kendall's concordance test.

Results

Intra- and inter-examiner agreements showed satisfactory results. The greatest accuracy was observed with conventional radiographs (AUC = 0.963 / CI 95% = 0.891-0.993). I-CAT 0.125mm images showed good accuracy (AUC = 0.885 / CI 95% = 0.790-0.947), with no significant difference compared to conventional radiography. Kodak images had high specificity and low sensitivity, presenting more false-negative results.

Conclusion

Conventional radiographs showed the highest accuracy for bone/implant interface diagnosis. However, CBCT scans (i-CAT 0.125 mm voxel), if available or if performed for pre-surgical assessment of another implant site, may provide similar accuracy.

Wednesday, August 09, 2017

Manual tactile sensation, digital radiograph, and multidetector computed tomography: An in vitro study.

Dutta K, Desai PD, Das UK, Sarkar S. Comparative evaluation of three methods to measure working length - J Conserv Dent [serial online] 2017 [cited 2017 Aug 5];20:76-80. Available from: http://www.jcd.org.in/text.asp?2017/20/2/76/212242   

 

  Abstract

     

Aim: Compare the measurement of working length with three different methods manual tactile sensation, digital radiography and Mutidetector computed tomography(MDCT).

Materials and Method: 40 human premolar extracted for orthodontic purpose were selected. Teeth were store in sodium chloride (0.9%) during the study. Access cavity was prepared and canal patency was seen with no 10 file in each tooth. Manually no 15 K file was inserted from access cavity until the tip was visible at the foramen, a silicon stopper was adjusted to the corresponding buccal cusp tip and the root canal length was measured. After that in each tooth with no-15 K file inserted from access cavity with stop at tip of buccal cusp until tip appear at foramen and x-ray was taken with digital radiograph (RVG,Satelac) and canal length was measured. After that all teeth are mounted in wax block,MDCT scan was done and in the scan images of teeth, root canal length is measured from buccal cusp tip to root end. After taking measurement of working length with all three methods and the data was stastically analyzed with One Way Analysis of variance (ANOVA) followed by Turkey's Test.

Results: ANOVA and turkeys test showed that there was no significant difference in the measurements by the three procedures (p>0.05).

Conclusion: Working length measurement with MDCT scan and other two conventional methods does not show significant difference in measurement. Use of newer 3D imaging technique is useful in root canal treatment for measuring working length.

Tuesday, August 08, 2017

Clinical and radiographic comparison of biodentine, mineral trioxide aggregate and formocresol as pulpotomy agents in primary molars



Abstract

Aim

To compare the clinical and radiographic success rates of three different pulpotomy agents in primary molars after 18 months.

Methods

The study was carried out with 51 primary molars of children aged 5–9 years old. The teeth were randomly assigned to the experimental or control groups. After coronal pulp removal and haemostasis, the remaining pulp tissue was covered with Biodentine® or mineral trioxide aggregate in the experimental groups. In the control group, formocresol was placed with a cotton pellet over the pulp tissue for 5 min and after removal the pulp tissue was covered with zinc oxide–eugenol (ZOE) paste. All teeth were immediately restored with reinforced ZOE base and resin modified glass-ionomer cement, and later with pre-formed metal crowns. Follow-up assessments were carried out after 3, 6, 12 and 18 months.

Results

Forty-five teeth were available for follow up at the end of 18 months. All of the available teeth for mineral trioxide aggregate and Biodentine® were clinically successful, as were 73.3% of the FC group. Radiographic success rate for the formocresol group at 18 months follow up was 73.3, 100% for mineral trioxide aggregate and 86.6% for Biodentine® group.

Conclusion

Mineral Trioxide aggregate and Biodentine® showed more favourable results than formocresol.