Friday, May 31, 2013

Effective three-dimensional evaluation analysis of upper airway form during oral appliance therapy in patients with obstructive sleep apnoea

Furuhashi, A., Yamada, S., Shiomi, T., Sasanabe, R., Aoki, Y., Yamada, Y. and Kazaoka, Y. (2013), Effective three-dimensional evaluation analysis of upper airway form during oral appliance therapy in patients with obstructive sleep apnoea. Journal of Oral Rehabilitation. doi: 10.1111/joor.12059

Summary

The oral appliance (OA) is considered to be an effective treatment modality for obstructive sleep apnoea (OSA). Upper airway enlargement during OA therapy is critical, and lateral cephalometry has been used for the two-dimensional evaluation of upper airway form during this therapy. However, this method cannot provide an accurate three-dimensional (3D) view of upper airway form. To confirm the effects of OA on the upper airway in patients with OSAS, we performed CT in the presence and absence of OA in 15 Japanese patients (12 males, 3 females) who responded to OA therapy. CT in the presence and absence of OA was consecutively performed for each patient, and upper airway cross-sectional area in six arbitrary planes parallel to the palatal plane was measured. Next, 3D image reconstruction was performed; morphological changes in upper airway form were evaluated, and upper airway volume at three levels from the palatal plane to the deepest point of the epiglottis was measured. The cross-sectional area of two planes in the posterior soft palate region significantly increased in the presence of OA compared with that in the absence of OA. In the presence of OA, upper airway cross-sectional area and volume significantly increased in the posterior soft palate region compared with those in the posterior tongue region. 3D CT image reconstruction accurately confirmed morphological changes in the upper airway during OA therapy. Continued use of this 3D evaluation is expected to improve the results of OA therapy in the future.

Thursday, May 30, 2013

Effectiveness of arginine-containing toothpastes in treating dentine hypersensitivity: A systematic review

Volume 41, Issue 6, June 2013, Pages 483–492

 

Abstract

Objectives

To evaluate by way of a systematic review the effectiveness of arginine-containing desensitising toothpastes in comparison to control agents in reducing dentine hypersensitivity.

Data sources

Electronic databases were searched including: Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE, LILACS (30/03/2012). Reference lists of eligible studies and systematic reviews were cross-checked in an attempt to identify additional studies. Strategies to identify grey literature were employed.

Study selection inclusion criteria

Controlled Clinical Trials (CCTs) and Randomised Controlled Trials (RCTs) comparing arginine-containing desensitising toothpastes to non-arginine-containing control toothpastes.
Two review authors independently screened the titles and abstracts of studies identified. Data collection forms were completed for included studies.

Outcomes

Changes in sensitivity to tactile and air-blast stimuli. A subjective assessment of sensitivity was also sought.

Conclusion

Data identified indicates a potential role for arginine-containing toothpastes in managing dentine hypersensitivity. However, this conclusion is based on small sample sizes and the studies identified did not follow patients up in the medium to long term. The authors recommend that there is a need for well-designed RCTs to be conducted prior to any definitive recommendations being made.

Clinical significance

Dentine hypersensitivity is a common condition. Its multi-factorial aetiology has led to several treatment modalities being advocated. The continued introduction of new desensitising agents suggests that no product has yet proven ultimately successful. Arginine-containing toothpastes have recently been introduced, this article systematically reviews the evidence relating to their effectiveness.

Wednesday, May 29, 2013

Why Toothpaste Makes Orange Juice Bitter



What is it about toothpaste that transforms the sweet flavor of orange juice into something so bitter? For the solution to that mysterious sensory phenomenon - in colorful, animated detail - check the latest episode of the American Chemical Society's award-winning Bytesize Science video series at http://www.bytesizescience.com/

The video, from the world's largest scientific society, explains that the mainstay ingredients in toothpaste include a detergent called sodium lauryl sulfate, or SLS for short. When you brush your teeth, SLS produces the foamy suds and gives toothpaste its distinct mouth-feel. SLS also influences the way your personal, powerful chemical sensor tastes food.

That sensor is your mouth, with its 10,000 individual taste buds. Each consists of scores of receptor cells that respond to the basic tastes. Those are sweet, sour, bitter, salty and umami (a pleasant, brothy or meaty flavor). Nerves carry the resulting signals to the brain, which registers tastes. How does SLS affect your sense of taste? For the answer:

Tuesday, May 28, 2013

The effects of non-surgical periodontal therapy on oxidant and anti-oxidant status in smokers with chronic periodontitis

Archives of Oral Biology
Volume 58, Issue 6 , Pages 717-723, June 2013

Abstract 

Aim

The aim of this study was to determine the effect of non-surgical periodontal treatment on gingival crevicular fluid (GCF) and serum oxidant–antioxidant levels in smoking and non-smoking patients with chronic periodontitis.

Methods

Twenty-nine patients with chronic periodontitis (15 smokers (CP-S) and 14 non-smokers (CP-NS)) and 20 periodontally healthy subjects (10 smokers (H-S) and 10 non-smokers (H-NS)) totalling 49 subjects were included in this study. GCF was collected from at least two pre-selected sites (one moderate and one deep pocket) in patients with CP. In the healthy group, GCF samples were collected from one site. Probing pocket depth, clinical attachment level (CAL), gingival and plaque indices, and bleeding on probing were measured. To determine serum total oxidant status (TOS) and total antioxidant status (TAS), venous blood was drawn from each subject. The GCF, serum sampling, and clinical measurements were recorded at baseline and 6 weeks after periodontal treatment.

Results

The study showed statistically significant improvement of clinical parameters after periodontal treatment in both smokers and non-smokers. In the CP-S group, there were no significant differences in GCF TAS levels at both moderate and deep pocket sites between baseline and 6 weeks (p>0.05). GCF TAS levels in the CP-NS groups were significantly increased (p<0.05) at moderate and deep pocket sites between baseline and 6 weeks. GCF TOS levels in the CP-S groups were significantly decreased (p<0.05) at deep pocket sites between baseline and 6 weeks. There was no significant difference in serum TAS levels of the all periodontitis patient groups between at baseline and 6 weeks (p>0.05). Serum TOS levels in the CP-S and CP-NS groups were significantly decreased (p<0.05) after periodontal treatments.

Conclusions

The periodontal treatment improves the clinical parameters in both smokers and non-smokers. These results confirm that non-surgical periodontal therapy can reduce oxidative stress.

Saturday, May 25, 2013

THE CANARY SYSTEM INVENTORS RECEIVE THE “INVENTORS OF THE YEAR” AWARD FROM the UNIVERSITY OF TORONTO

The Canary System is the most accurate caries detection I have ever used. MJ

Quantum Dental Technologies is pleased to announce that the inventors behind the energy conversation technology powering The Canary System™ were recognized by the University of Toronto as “Inventors of the Year”.

On May 15, 2013, Drs. Stephen Abrams and Andreas Mandelis (Professor in the Departments of Mechanical and Industrial Engineering; Electrical and Computer Engineering; and the Institute of Biomaterials and Biomedical Engineering) were recognized for their invention, The Canary System, which is changing the way dentists detect, monitor and treat tooth decay. Inventions were assessed based on their uniqueness, potential for global impact and commercial appeal.

“The Inventor of the Year Award is meant to recognize inventions that have the potential to improve our quality of life,” said Professor Paul Young, vice-president (research and innovation). “The winning inventions represent the very best of innovation at U of T, and on behalf of the University, I extend my congratulations.”

The Canary System is the brainchild of dentist Dr. Stephen Abrams and one of his patients, Dr. Andreas
Mandelis.  Twelve years ago, while Mandelis was in the dental chair, Abrams complained about the difficulty of diagnosing tooth decay on the biting surfaces of back teeth.  Mandelis said he had a novel technology to image crystal structure, and they then started on their journey to create The Canary System.  The technology behind The Canary System was developed in Dr. Mandelis’ lab at the University of Toronto, with the help of his co-inventors and guidance and technical input from co-founder and dentist Dr. Stephen Abrams.  This unique system allows clinicians to detect and monitor caries on all tooth surfaces including interproximal regions, around the intact margins of restorations, beneath opaque dental sealants and around orthodontic brackets.  Under the leadership of Dr. Abrams and Dr. Mandelis the research team has been constantly innovating and pushing the frontiers of dentistry by substantiating the clinical applications of The Canary System in early detection and treatment of tooth decay.

Dr. Abrams said, “I’m proud to be working with such a great team of scientists, researchers, and engineers. Research is at the core of QDT.  Now dentists have a reliable diagnostic tool for minimally invasive treatment of tooth decay.”

PTR-LUM, the core technology in The Canary System, exhibits higher sensitivity and specificity in detecting caries compared to traditional methods using visual inspection, dental explorer tools, x-rays (radiographs), or fluorescence-based devices. The Canary System is the product of over 12 years of research and development which includes 60+ peer-reviewed journal articles, 7 patent families, and supported with two clinical trials performed under FDA CFR 21 guidelines.  Quantum Dental Technologies continues to develop and publish more research applications for this unique platform.

About Quantum Dental Technologies
Quantum Dental Technologies (QDT) is a Canadian diagnostic device company. The company was founded in 2006 by Dr. Stephen Abrams and Dr. Andreas Mandelis who designed and developed The Canary System, a patented technology to aid in the diagnosis, prevention and management of dental caries. For more information, please visit www.thecanarysystem.com.


Friday, May 24, 2013

Professional Economics Bureau of America’s XLDent MU Receives ONC-ACB Certification by Drummond Group

May 9, 2013 – Loretto, MN – Professional Economics Bureau of America’s XLDent MU has been tested and certified under the Drummond Group's Electronic Health Records Office of the National Coordinator Authorized Certification Body (ONC-ACB) program. This EHR software is compliant in accordance with the criteria adopted by the Secretary of the U.S. Department of Health and Human Services.

 “We are very happy to offer a solution that will assist eligible providers in achieving Meaningful Use for the EHR Incentive Program,” says Dawn Christodoulou, President of Professional Economics Bureau of America, Inc.  “What makes the XLDent Dental Practice Management System unique is the ability to run all workflows, including those new workflows required for Meaningful Use Attestation, in a completely mobile environment.  XLDent MU is just another example of how we are delivering solutions at the point-of-care.”

Drummond Group’s ONC-ACB certification program certifies that EHRs meet the meaningful use criteria for either eligible provider or hospital technology. In turn, healthcare providers using the EHR systems of certified vendors are qualified to receive federal stimulus monies upon demonstrating meaningful use of the technology – a key component of the federal government’s push to improve clinical care delivery through the adoption and effective use of EHRs by U.S. healthcare providers.

XLDent MU Version 7.6, which met the requirements for Complete EHR Ambulatory is a fully certified Electronic Health Record solution designed to help dental offices qualify for federal incentive payments.  The module is seamlessly integrated with the XLDent Suite of products, version 12.9 and above.

“Leveraging information technology for healthcare initiatives provides the opportunity to deliver a high-level quality of care and efficiency which essentially benefits and enhances the overall patient experience,” says Rik Drummond, CEO of the Drummond Group Inc. “We have been testing software for more than a decade and will continue to provide our extensive experience testing and certifying complex systems for multiple industries, as well as ensuring interoperability and security remain key components in the growing healthcare industry.”

About Professional Economics Bureau of America, Inc.
Professional Economics Bureau of America, Inc (PEB) is a privately owned Dental Software Development and Services company with its headquarters located at 279 North Medina Street in Loretto, Minnesota. PEB has focused on serving the high technology needs of the dental community since 1971 and is dedicated to providing software solutions that are focused on the success of its clients and on enhancing the standard of patient care for improved patient outcomes. PEB is committed to the continual development of electronic dental health records, mobile solutions and internet-based options in the current development environment with emphasis on proven technologies.  For more information, please visitwww.xldent.com.

About Drummond Group Inc.
Drummond Group Inc. is a global software test and certification lab that serves a wide range of vertical industries.  In healthcare, Drummond Group tests and certifies Controlled Substance Ordering Systems (CSOS), Electronic Prescription of Controlled Substances (EPCS) software and processes, and Electronic Health Records (EHRs) – designating the trusted test lab as the only third-party certifier of all three initiatives designed to move the industry toward a digital future. Founded in 1999, and accredited for the Office of the National Coordinator HIT Certification Program as an Authorized Certification Body (ACB) and an Authorized Test Lab (ATL), Drummond Group continues to build upon its deep experience and expertise necessary to deliver reliable and cost-effective services. For more information, please visit http://www.drummondgroup.com or emailDGI@drummondgroup.com.
 

Thursday, May 23, 2013

DentalEZ® Group’s everLight® is Now Enhanced for Brighter Illumination



The First True, Direct LED Light in the U.S. is Now New & Improved

Conversion Kits are Available for competitive lights as well as Existing Users
for a Simple and Easy Upgrade


Malvern, PA (May 21, 2013) – DentalEZ® Group, a supplier of innovative products and services for dental health professionals worldwide, is pleased to announce that its popular everLight® LED operatory light is now enhanced with brighter illumination for a more productive experience.  Conversion kits are available for competitive lights as well as existing users of the original everLight for a quick and easy upgrade. 

Specifically, the everLight’s intensity settings are now increased for an even brighter illumination:

·       Low setting – has been increased from 8,000 LUX to 15,000 LUX
·       Medium setting – has been increased from 15,000 LUX to 25,000 LUX
·       High setting – has been increased from 25,00 LUX to 30,000 LUX

The everLight’s procedural settings have also been enhanced for a clearer, whiter light:

·       The “A Sun” color match setting has been increased from 5,300 Kelvin to 5,800 Kelvin
·       The “B Sun/Bulb” operative setting has been increased from 4,300 Kelvin to 4500 Kelvin

An alternative to halogen-based operatory lights, the everLight LED operatory light provides color-corrected lighting, precise light pattern and energy efficient features simply not possible using traditional halogen lighting. The everLight encompasses a long life of 30,000-plus hours, 10 times longer than halogen; therefore, there no longer is a need for replacement of lightbulbs.  Moreover, dental professionals will enjoy substantial savings on monthly energy expenses, as the everLight uses less than 35 watts of energy; 70% less than halogen-based systems.   

No reflector or fan is required for the ultra-quiet everLight, since it is 100% true direct LED lighting and remains at a consistent, cool temperature. 

The everLight is equipped with nine temperature/intensity settings to meet all operative needs. Its superior LED technology provides natural daylight illumination and a precise light pattern, which results in clear oral cavity visibility and exact color matching. Furthermore, the everLight’s LED composite setting will not cause pre-maturing on composite materials.

The innovative design of the everLight is ergonomically equipped with a standard third-axis rotation, allowing limitless positioning for optimal illumination. Moreover, the everLight is easily installed in six mounting configurations. 

The everLight has an extended life expectancy and comes with a best in its class 3-year warranty combined with a 6-year warranty on the unit’s engine components (switches, LED driver, and lens). 

For more information about the new and improved everLight and all DentalEZ offerings, please call 866-DTE-INFO or visit www.dentalez.com.  

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 www.dentalez.com.
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Wednesday, May 22, 2013

Brasseler USA® Announces New Trade Show “Innovation Station”



Dental Professionals Provided a Hands-On Experience at all Major Trade Shows

Savannah, GA (May 21, 2013) – Brasseler USA®, a leading manufacturer of innovative, quality dental instrumentation, recently added extra value to the trade show experience by dedicating a substantial portion of its exhibit booth to implement its new “Innovation Station”. The Innovation Station provides dental professionals with a full hands-on experience of all available Brasseler products. 

Specifically, the new Innovation Station is a special area located within Brasseler’s exhibit booth dedicated to providing dental professionals with an interactive experience of Brasseler’s most popular products in a relaxed professional environment. Dentists can choose from a variety of Brasseler rotary instruments to trim, adjust, finish and polish a wide spectrum of restorative materials including the newest generation of ceramics. Dedicated Brasseler personnel are also readily available to assist with any comments or questions users may have along the way.   

Brasseler has received abundant positive feedback from those who have already taken advantage of the Innovation Station experience at recent dental tradeshow events. “We tested our Innovation Station concept at the 2012 ADA show and this year’s Chicago Midwinter Meeting and it was very well received,” remarked Jack Burlison, National Sales Manager for Brasseler USA. “Dentists loved the fact that they could actually test products on materials in a relaxed manner. We’re excited about our new Innovation Station and the value this will bring to practitioners who visit our booth.”

Going forward, Brasseler’s Innovation Station will be a staple of Brasseler’s trade show exhibit at the following dental meetings:

·       American Dental Association Annual Session (ADA)
·       Greater New York Dental Meeting (GNY)
·       Yankee Dental Congress
·       Chicago Dental Society Midwinter Meeting (CMW)
·       Thomas P. Hinman Dental Meeting
·       California Dental Association (CDA Spring Sessions)

For more information about all Brasseler products and services, please visit www.BrasselerUSA.com 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 35 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 power systems under one brand in the world. For more information, please visit www.BrasselerUSA.com. 

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Tuesday, May 21, 2013

Henry Schein Opens Its Disaster Relief Hotline to Support Customers Affected by the Tornado in Oklahoma


MELVILLE, N.Y., May 21, 2013 /PRNewswire/ -- Henry Schein, Inc. (NASDAQ: HSIC), the world's largest provider of health care products and services to office-based dental, medical and animal health practitioners, today announced that it has opened the Henry Schein Disaster Relief Hotline for dentists, physicians, and veterinarians who experience operational, logistical, or financial issues as a result of the devastating tornado in Oklahoma. The toll-free number for all Henry Schein customers – 800-999-9729 – is operational from 7 a.m. to 7 p.m. ET.
"We are all so deeply saddened by the devastating tornado that has struck the Oklahoma City region," said Stanley Bergman, Chairman of the Board and Chief Executive Officer of Henry Schein, Inc.  "When this kind of natural disaster occurs, it is imperative that we do all we can to help those impacted by such a tragedy. We encourage practitioners to call our hotline, so that we can assist in their recovery as quickly as possible."
In addition to helping its customers through this tragedy, health care products donated by Henry Schein through Henry Schein Cares, the Company's corporate social responsibility program, will be used to support organizations providing disaster relief assistance to citizens in the affected communities.

Association between occlusal curvature and masticatory movements with different test foods in human young adults with permanent dentitions

Archives of Oral Biology
Volume 58, Issue 6 , Pages 674-680, June 2013

Abstract 

Objective

Occlusal curvatures such as the curve of Spee, curve of Wilson and Monsons's sphere exist in the human adult mandibular arch. A previous study showed that human young adults with flatter occlusal curvatures had higher ability of food comminution and mixing. The aim of this study was to clarify functional significance of occlusal curvatures in terms of masticatory movements. This study investigated the association between occlusal curvature and mandibular movements while chewing a variety of food items.

Design

Forty-six young adults with complete dentitions (mean age, 25.0 years) participated in the study. Sphere radius of occlusal curvature was determined by a three-dimensional analysis of the mandibular arch based on the Broadrick flag method. Mandibular movements during unilateral chewing of six test food items (chewing gum, cheese, kamaboko, boiled beef, gummy jelly and raw carrot) until the subjects felt ready to swallow were recorded using a six-degrees-of-freedom mandibular movement recording system, and 11 parameters for masticatory movements of a lower incisal point of the mandible were analysed.

Results

Linear regression analyses identified the sphere radius as a significant predictor for closing velocity in all test food items, occluding/cycle duration in 3 items, opening velocity, closing duration and chewing time in 2 items, and opening duration in 1 item (P<0.01). The results suggest that subjects with larger sphere radius (flatter occlusal curvature) in the mandibular arch could prepare food bolus effectively for swallowing.

Conclusion

Occlusal curvature seems to be associated with masticatory movements in young adults with permanent dentition.

Monday, May 20, 2013

Clinical aspects of the use of dental adhesive materials in patients with chronic xerostomia

This is a Good FYI for your older denture wearing patients. MJ

Bogucki, Z. A. (2013), Clinical aspects of the use of dental adhesive materials in patients with chronic xerostomia. Gerodontology, 30: 162–166. doi: 10.1111/j.1741-2358.2012.00659.x
Adhesives are commonly used by denture wearers to increase the retention and stability of the complete denture, to improve the chewing and masticatory abilities and to psychologically support the patient to make the complete denture more acceptable. Denture fixatives can be especially recommended for use and to aid retention for patients with dryness of the mouth, poor secretion of saliva and xerostomia (e.g. diabetes mellitus). Dental adhesives may be contaminated with bacteria, yeast and fungi during the manufacturing process, and they have been shown to initiate and promote microbial growth. Some products have been shown to release formaldehyde, which is cytotoxic to cell culture and fibroblasts and is a potent allergen. Patients with chronic xerostomia may use denture adhesives during the course of the treatment and disease. These patients are often immunocompromised, and microorganisms they are exposed to must be considered potential pathogens.

Saturday, May 18, 2013

Marginal quality of posterior microhybrid resin composite restorations applied using two polymerisation protocols: 5-year randomised split mouth trial

Good to know that curing rates of composite do not change outcomes. MJ
 
Volume 41, Issue 5, May 2013, Pages 436–442

Abstract

Objectives

This randomised, split-mouth clinical study evaluated the marginal quality of direct Class I and Class II restorations made of microhybrid composite and applied using two polymerisation protocols, using two margin evaluation criteria.

Methods

A total of 50 patients (mean age: 33 years) received 100 direct Class I or Class II restorations in premolars or molars. Three calibrated operators made the restorations. After conditioning the tooth with 2-step etch-and-rinse adhesive, restorations were made incrementally using microhybrid composite (Tetric EvoCeram). Each layer was polymerised using a polymerisation device operated either at regular mode (600–650 mW/cm2 for 20 s) (RM) or high-power (1200–1300 mW/cm2 for 10 s) mode (HPM). Two independent calibrated operators evaluated the restorations 1 week after restoration placement (baseline), at 6 months and thereafter annually up to 5 years using modified USPHS and SQUACE criteria. Data were analyzed using Mann–Whitney U-test (α = 0.05).

Results

Alfa scores (USPHS) for marginal adaptation (86% and 88% for RM and HPM, respectively) and marginal discoloration (88% and 88%, for RM and HPM, respectively) did not show significant differences between the two-polymerisation protocols (p > 0.05). Alfa scores (SQUACE) for marginal adaptation (88% and 88% for RM and HPM, respectively) and marginal discoloration (94% and 94%, for RM and HPM, respectively) were also not significantly different at 5th year (p >0.05).

Conclusion

Regular and high-power polymerisation protocols had no influence on the marginal quality of the microhybrid composite tested up to 5 years. Both modified USPHS and SQUACE criteria confirmed that regardless of the polymerisation mode, marginal quality of the restorations deteriorated compared to baseline.

Friday, May 17, 2013

Clinical and radiographic outcomes of a combined resective and regenerative approach in the treatment of peri-implantitis: a prospective case series

Matarasso S, Iorio Siciliano V, Aglietta M, Andreuccetti G, Salvi GE. Clinical and radiographic outcomes of a combined resective and regenerative approach in the treatment of peri-implantitis: a prospective case series. Clin. Oral Impl. Res. 00, 2013; 17.

Abstract

Aim

To assess the clinical and radiographic outcomes applying a combined resective and regenerative approach in the treatment of peri-implantitis.

Materials and methods

Subjects with implants diagnosed with peri-implantitis (i.e., pocket probing depth (PPD) ≥5 mm with concomitant bleeding on probing (BoP) and ≥2 mm of marginal bone loss or exposure of ≥1 implant thread) were treated by means of a combined approach including the application of a deproteinized bovine bone mineral and a collagen membrane in the intrabony and implantoplasty in the suprabony component of the peri-implant lesion, respectively. The soft tissues were apically repositioned allowing for a non-submerged healing. Clinical and radiographic parameters were evaluated at baseline and 12 months after treatment.

Results

Eleven subjects with 11 implants were treated and completed the 12-month follow-up. No implant was lost yielding a 100% survival rate. At baseline, the mean PPD and mean clinical attachment level (CAL) were 8.1 ± 1.8 mm and 9.7 ± 2.5 mm, respectively. After 1 year, a mean PPD of 4.0 ± 1.3 mm and a mean CAL of 6.7 ± 2.5 mm were assessed. The differences between the baseline and the follow-up examinations were statistically significant (P = 0.001). The mucosal recession increased from 1.7 ± 1.5 at baseline to 3.0 ± 1.8 mm at the 12-month follow-up (P = 0.003). The mean% of sites with BoP+ around the selected implants decreased from 19.7 ± 40.1 at baseline to 6.1 ± 24.0 after 12 months (P = 0.032).
The radiographic marginal bone level decreased from 8.0 ± 3.7 mm at baseline to 5.2 ± 2.2 mm at the 12-month follow-up (P = 0.000001). The radiographic fill of the intrabony component of the defect amounted to 93.3 ± 13.0%.

Conclusion

Within the limits of this study, a combined regenerative and resective approach for the treatment of peri-implant defects yielded positive outcomes in terms of PPD reduction and radiographic defect fill after 12 months.

Thursday, May 16, 2013

Evaluating the efficiency of caries removal using an Er:YAG laser driven by fluorescence feedback control

The Kavo Key laser is not available in the United States. MJ 

Archives of Oral Biology
Volume 58, Issue 6 , Pages 603-610, June 2013

Abstract 

Introduction

Caries lesions in dental hard tissues autofluoresce when exposed to light of certain wavelengths, whereas sound tissues do not, and this can be used as an in vitro histological marker for dental caries. Detection of autofluorescence is the basis of KaVo DIAGNOdent™ technology, and provides objective feedback control of laser-stimulated ablation of dental caries for the KaVo Key Laser 3™. This Er:YAG laser operates at 2940nm wavelength, and is effective at removal of infected dental hard tissues. Micro-computed tomography (micro-CT) allows the non-invasive investigation of three-dimensional structures and analysis of mineral density profiles of dentine following laser ablation.

Objective

To evaluate removal of infected, demineralised dentine by Er:YAG irradiation with a laser feedback mechanism, using micro-CT.

Design

27 carious teeth (1 control) and 1 sound tooth, treated with the KaVo Key Laser 3™ using a KaVo™ non-contact 2060 handpiece at specific feedback settings, were examined using a Skyscan 1172 Micro-CT, to observe the efficiency of demineralised dentine removal. Grey scale images obtained were colour rendered to assist detection of demineralised tissue if present.

Results

Complete removal of demineralised tissue occurred with laser-stimulated ablation under feedback control at values of 7 and 8 when measured by micro-CT. At greater values, removal of demineralised dentine was incomplete.

Conclusion

Examination of dental tissues by micro-CT allowed determination of the efficiency of Er:YAG laser-stimulated ablation. Feedback control of the KaVo Key Laser 3™ appeared to operate like a cut-off switch when infected dentine was eliminated, at a threshold of between 6 and 7.

Wednesday, May 15, 2013

The Pogues' Shane MacGowan appeals for dentist to fix his teeth so he can start film career Read more at http://www.nme.com/news/the-pogues/70254#Au2MO3QpixixMIjs.99

The Pogues' Shane MacGowan is searching for a dentist who can fix his infamously bad teeth so he can start a Hollywood film career. 

Shanes, girlfriend Victoria Mary Clarke has launched an appeal on Twitter for a dentist to fix his gnashers and also promised that the frontman would front an advertising campaign in exchange for the work. 

The Pogues' official Twitter account have also backed the search, writing: "ALERT! Job offer of lifetime. Any Pogues/Shane Mac fans who are great dentists please tweet @Victoriamary to work on the great man himself!"

Currently Shane has a denture. So if your interested Tweet Victoria 

Read more at http://www.nme.com/news/the-pogues/70254#Au2MO3QpixixMIjs.99 

Tuesday, May 14, 2013

Henry Schein Introduces some new products.

HENRY SCHEIN
® INTRODUCES MAXIMA
® CURING LIGHT METER


Henry Schein® introduces Maxima® Curing Light Meter for use with both LED and halogen curing lights. Compact and easy to use, this instantaneous digital display measures curing intensity and light-guide temperature. The temperature feature provides an overheating safeguard and comes with 3 AAA batteries along with a 1-year warranty.
Henry Schein® is the exclusive distributor of Henry Schein® Brand products.


HENRY SCHEIN® INTRODUCES NEW ACCLEAN® ORTHODONTIC KIT WITH LIGHTED MIRROR
Henry Schein® introduces new Acclean®Orthodontic Kit With Lighted Mirror which comes prepacked in a clear, colorful plastic carrying case. The patient kit contains a lighted angle mirror, dual-head toothbrush, ortho wax, end-tufted brush, waxed dental floss, floss threader, and an interdental brush. This deluxe kit provides orthodontic patients with what they need to maintain a healthy smile.

Henry Schein® is the exclusive distributor of Henry Schein® Brand products.

For additional information contact: Henry Schein Dental at 1-800-372-4346
(8 a.m. - 9 a.m. EDT) or visit the Web site at www.henryscheindental.com.


Monday, May 13, 2013

AGD Committed to Communities Receiving Quality Oral Health Care: Questions incorrectly analyzed data by Pew Children ’s Dental Campaign


CHICAGO (May 7, 2013)
—More than 16 million U.S. children suffer from dental decay, and research shows that many parents lack basic information about oral health. The Academy of General Dentistry (AGD) calls for dental organizations to work together to create sustainable strategies to improve oral health outcomes for all Americans, especially children.
A few states in the U.S. are considering implementing a dental therapist model to improve oral
health and they may be utilizing a March 2013 report from the Pew Children’s Dental Campaign
(“Dental Therapists in New Zealand: What the Evidence Shows”) to make their decision. The
AGD cautions that this report contains misleading information about the “success” of this model.
The Pew report makes an incorrect comparison between New Zealand and the United States;
New Zealand has had a dental therapist program sincethe 1920s. Authors of the report write that
only 3 percent of children ages 5 to 11 in New Zealand have untreated dental decay in their
permanent teeth, as compared to 20 percent of the same age group of children in the U.S.
However, the 20 percent refers to decay in primary andpermanent teeth in U.S. children. In
reality, while 2.7 percent of children in the age group in New Zealand suffer from untreated
dental decay in their permanent teeth, another 17.3% of these children suffer from untreated
dental decay in their primary teeth. The amount of decay is almost the same in both nations,
thereby invalidating the argument that a dental therapist model may reduce the prevalence of
children’s dental decay.
“The fact that the percentage of children suffering
from untreated dental decay is almost identical in both countries is a clear sign that a dental therapist model does not help to decrease untreated dental decay in children,”says AGD President Jeffrey M. Cole, DDS, MBA, FAGD. “We all want the same thing: a system that provides the best quality of oral health care to all Americans. 
We hope to work with Pew and other dental organizations to identify joint strategies for boosting
access to and utilization of the oral health care services already established.”
The authors of the Pew report also claim that more than 1,000 studies exist to show that dental
therapists across the globe offer quality care. The American Dental Association
already has refuted that claim, explaining that those studies failed to find a positive impact of dental
therapists on the overall health status of a population.
“We believe that no child should experience pain or suffer broader health issues resulting from
untreated dental disease and conditions. But we don’t agree that implementing a dental therapist
model throughout our country will help to decrease the percentage of children who have
untreated tooth decay,” said Dr. Cole. 
Rather than using funds to analyze the dental therapist model, the AGD urges Pew to instead
strategize and develop a plan for improving oral health literacy, and subsequently influencing

families to utilize quality oral health programs that already exists in the U.S.; a system of care
that is provided by or under the supervision of a licensed dentist. 
“By educating children, their parents, or caregivers on the importance of having and maintaining
good oral health, we can help improve the overall well-being of our children,” said Dr. Cole.
About the Academy of General Dentistry
The Academy of General Dentistry (AGD) is a professional association of 38,000 general
dentists dedicated to providing quality dental care and oral health education to the public. AGD
members stay up-to-date in their profession through a commitment to continuing education.
Founded in 1952, the AGD is the second largest dental association in the United States, and it is
the only association that exclusively represents the needs and interests of general dentists. A
general dentist is the primary care provider for patients of all ages and is responsible for the
diagnosis, treatment, management, and overall coordination of services related to patients’ oral
health needs. For more information about the AGD, visit

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Saturday, May 11, 2013

Fluoride Reduces The Ability Of Decay-Causing Bacteria To Stick

 In an advance toward solving a 50-year-old mystery, scientists are reporting new evidence on how the fluoride in drinking water, toothpastes, mouth rinses and other oral-care products prevents tooth decay. Their report appears in the ACS journal Langumir.

Karin Jacobs and colleagues explain that despite a half-century of scientific research, controversy still exists over exactly how fluoride compounds reduce the risk of tooth decay. That research established long ago that fluoride helps to harden the enamel coating that protects teeth from the acid produced by decay-causing bacteria. Newer studies already found that fluoride penetrates into and hardens a much thinner layer of enamel than previously believed, lending credence to other theories about how fluoride works.

The report describes new evidence that fluoride also works by impacting the adhesion force of bacteria that stick to the teeth and produce the acid that causes cavities. The experiments - performed on artificial teeth (hydroxyapatite pellets) to enable high-precision analysis techniques - revealed that fluoride reduces the ability of decay-causing bacteria to stick, so that also on teeth, it is easier to wash away the bacteria by saliva, brushing and other activity.

Friday, May 10, 2013

In vivo bisphenol-A release from dental pit and fissure sealants: A Systematic Review

Available online 1 May 2013

Abstract

Objective

To search the literature and assess the short- and long- term release of bisphenol-a (BPA) in human tissues after treatment with dental sealants.

Data

Two review authors performed data extraction independently and in duplicate using data collection forms. Disagreements were resolved by discussion with an arbiter.

Sources

Electronic database searches of published and unpublished literature were performed. The following electronic databases with no language and publication date restrictions were searched: MEDLINE (via Ovid and Pubmed), EMBASE (via ovid), Cochrane Trials Register and CENTRAL. The reference lists of all eligible studies were hand-searched.

Study selection

In the absence of RCTs, six interventional and two observational studies, examining in vivo BPA release in human salivary, blood and urinary samples, were included. Due to the heterogeneity in methodology and reporting the main synthesis of the results was qualitative. The quantitative synthesis based on the weighted Z-test could only include two studies. BPA levels identified in saliva ranged from traces below the method's detection limit to 30 μg/ml. In urine, BPA quantities spanned from 0.17 mg/g to 45.4 mg/g. BPA was not traced in any blood sample at any point of time in the relevant studies. The quantitative analysis showed evidence of BPA release one hour after sealant placement compared to the amount traced before restoration (Stouffer's z trend: <0 .001="" p="">

Conclusions

The available evidence on this topic derived from studies that represent a moderate level of evidence. Nevertheless, the available evidence supports that BPA is released in saliva after sealant placement.

Thursday, May 09, 2013

INFLUENCE OF FILLER CHARGE ON GLOSS OF COMPOSITE MATERIALS BEFORE AND AFTER IN VITRO TOOTHBRUSHING

Available online 3 May 2013

Abstract

Objectives

this study evaluated the gloss behavior of experimental resin composites loaded with different filler percentages, immediately after polishing and after toothbrushing simulation.

Methods

sixteen disc-shaped specimens were fabricated for each different-charged composite (40%, 50%, 60%, 70% and 75%) and polished with SiC abrasive papers. Gloss measurements were made prior to simulated toothbrushing. The specimens were subjected to the simulation for 5, 15, 30 and 60 minutes using an electrical toothbrush with a standardized pressure while being immersed in a toothpaste/artificial saliva slurry.

Results

Baseline composite gloss values ranged from 69.7 (40%) to 81.3 (75%) GU (gloss units) and from 18.1 (40%) to 32.3 (75%) GU after one hour of brushing. Highest gloss values were obtained by 75%-charged resin, while the lowest values were obtained by the 40%-charged one.

Conclusions

All tested materials showed a gloss decrease. However, the higher filler load a composite resin has, the higher gloss it can achieve.

Wednesday, May 08, 2013

DUX Dental Launches New Size PeelVue+ Sterilization Pouch

New size pouch ideal for steri-cages, steri-mats and five instrument cassettes

OXNARD, CALIF. – MAY 7, 2013 – As a leader in infection control products, DUX Dental produces high quality sterilization pouches that fit the everyday needs of the dental office. The new PeelVue+ TEAL sterilization pouch measures at 7 1/8” open end by 13 13/16” length, which is ideal for steri-cages, steri-mats, and five instrument cassettes. With this new addition to the PeelVue+ family, there are now 13 different sized pouches to meet a wide variety of sterilization needs. To view all available sizes visit www.duxdental.com.
As with all of the PeelVue+ Sterilization Pouches, the PeelVue TEAL pouch meets CDC Guidelines for Disinfection and Sterilization in Healthcare Facilities. PeelVue Pouches feature internal and external chemical indicators. PeelVue are also the only sterilization pouch available that guides the user to the proper close with patent pending ‘Closure Validators’ so you can be sure your pouch is sealed correctly and instruments remain sterilized. PeelVue pouches are easy-to-peel and seal and printed with lead-free inks on medical-grade, virgin, non-recycled paper. 

About DUX Dental
DUX Dental has been manufacturing and distributing the highest level of dental products worldwide for more than 50 years. Based in the coastal city of Oxnard, Calif., with additional manufacturing and distribution facilities in Europe, DUX Dental is home to a world-class team of innovators who produce and service a portfolio of hundreds of dental products and supplies. DUX Dental is well-known for its series of industry firsts including Zone Temporary Cement, Identic™ Alginate and Bib-eze™ disposable bib holders, as well as its award-winning PeelVue+ sterilization pouches. Visit www.duxdental.com or contact duxoffice(at)duxdental(dot)com  for more information about DUX Dental products.