Monday, August 31, 2009

Bluetooth technology for prevention of dental caries.

Med Hypotheses. 2009 Jun 29.
Bluetooth technology for prevention of dental caries.
Kolahi J, Fazilati M.

Torabinejad Research Center, Isfahan University of Medical Sciences, No. 10, Sayt 180, Shahin Shahr, Isfahan Co 83188-65161, Iran.

Caries is caused when the pH at the tooth surface drops below 5.5. A miniaturized and autonomous pH monitoring nodes can be attached to the tooth surface, like a tooth jewel. This intelligent sensor includes three components: (a) digital micro pH meter, (b) power supply, (c) wireless communicating device. The micro pH meter facilitates long term tooth surface pH monitoring and providing real time feedback to the patients and dental experts. Power supply of this system will be microfabricated biocatalytic fuel cell (enzymatic micro-battery) using organic compounds (e.g. formate or glucose) as the fuel to generate electricity. When micro pH meter detects the pH lower than 5.5, wireless Bluetooth device sends a caution (e.g. "you are at risk of dental caries") to external monitoring equipment such as mobile phone or a hands-free heads. After reception of the caution, subjects should use routine brushing and flossing procedure or use a medicated chewing gum (e.g. chlorhexidine containing chewing gum) or rinse with a mouthwash.

Saturday, August 29, 2009

Friday, August 28, 2009

Dentrix CU 6 for G4 update delayed

Dentrix CU 6 for G4 update which was supposed to be out at the end of the month has been delayed. New date when I find out.

Thursday, August 27, 2009

Philips announces new Flexcare+ Toothbrush

Flexcare + will launch at the ADA convention in October. I love my current Flexcare and look forward to trying the new Flexcare+.

Wednesday, August 26, 2009

HHS Issues Rule Requiring Individuals Be Notified of Breaches of Their Health Information

This is why encrypting data is the best thing you can do to ensure your data is secure. MJ

New regulations requiring health care providers, health plans, and other entities covered by the Health Insurance Portability and Accountability Act (HIPAA) to notify individuals when their health information is breached were issued today by the U.S. Department of Health and Human Services (HHS).

These “breach notification” regulations implement provisions of the Health Information Technology for Economic and Clinical Health (HITECH) Act, passed as part of American Recovery and Reinvestment Act of 2009 (ARRA).

The regulations, developed by the HHS Office for Civil Rights (OCR), require health care providers and other HIPAA covered entities to promptly notify affected individuals of a breach, as well as the HHS Secretary and the media in cases where a breach affects more than 500 individuals. Breaches affecting fewer than 500 individuals will be reported to the HHS Secretary on an annual basis. The regulations also require business associates of covered entities to notify the covered entity of breaches at or by the business associate.

“This new federal law ensures that covered entities and business associates are accountable to the Department and to individuals for proper safeguarding of the private information entrusted to their care. These protections will be a cornerstone of maintaining consumer trust as we move forward with meaningful use of electronic health records and electronic exchange of health information,” said Robinsue Frohboese, acting director and principal deputy director of OCR.

The regulations were developed after considering public comment received in response to an April 2009 request for information and after close consultation with the Federal Trade Commission (FTC), which has issued companion breach notification regulations that apply to vendors of personal health records and certain others not covered by HIPAA.

To determine when information is “unsecured” and notification is required by the HHS and FTC rules, HHS is also issuing in the same document as the regulations an update to its guidance specifying encryption and destruction as the technologies and methodologies that render protected health information unusable, unreadable, or indecipherable to unauthorized individuals. Entities subject to the HHS and FTC regulations that secure health information as specified by the guidance through encryption or destruction are relieved from having to notify in the event of a breach of such information. This guidance will be updated annually.

The HHS interim final regulations are effective 30 days after publication in the Federal Register and include a 60-day public comment period. For more information, visit the HHS Office for Civil Rights web site at

To track the progress of HHS activities related to ARRA, visit To track all federal activities related to ARRA, visit

Tuesday, August 25, 2009

UK'S Largest-Ever Mouth Cancer Campaign Announced

THE UK's leading mouth cancer campaigners announce the first ever Mouth Cancer Action Month today after recent figures showed record numbers diagnosed with the disease.

The British Dental Health Foundation will run its first-ever month-long campaign for the duration of November after previous week-long campaigns.

The charity now calls on dentists, pharmacists and all dental care professionals to lend their support to a campaign advising the public 'If In Doubt, Get Checked Out'. The tagline will urge the public to get to self-examine for signs of mouth cancer and visit their dentist for oral screenings - early detection of this killer disease improves survival chances from just 50% to more than 90%.

At the heart of the campaign lies the inspirational story of Lia Mills, the face of the MCAM 2009 poster campaign.

Novelist Lia, 52, was diagnosed with mouth cancer in 2006 after first ignoring her lump, then facing a struggle to convince her dentist there was more to her ulcer than lichen planus. Her speech at the 2008 Mouth Cancer Action Week launch at the House of Commons had a deep impact on all present.

Lia said: "Doesn't everyone know, by now, that if you have a lump or a sore that doesn't heal within a few weeks, you should check it out? But I didn't take my lump seriously because it was in my mouth. I'd never heard of oral cancer.

"I had put up with this for a while before I went to the dentist. He recommended a gel commonly used for mouth ulcers. The sore area spread and a second dentist concluded that I had erosive lichen planus. He said he was glad that I'm not the kind of person who runs to my GP at the first suggestion from the internet.

"However the sore area in my cheek was getting worse instead of better, I did go to my GP. By then I had a swollen gland in my neck as well. By the time I got to a maxillo-facial clinic I needed radical surgery to my face and neck, followed by radiotherapy. "The chances of survival improve dramatically with early intervention."

The Foundation calls on each dentist to make sure they screen every patient carefully and make sure they are the dentist who will save a life.

Recent figures showed 5,325 cases of mouth cancer in 2006, an 8% year-on-year rise and a 41% rise in just 10 years.

Latest stats show 1,851 deaths in 2007, a 13% increase in the past decade - with one mouth cancer death every five hours in the UK.

These figures are stark proof of the importance of taking this threat seriously and committing to Mouth Cancer Action Month.

The Foundation urges all healthcare professionals to get involved in promoting awareness. Oral screenings are just one important tool to help early detection.

Prevention is also key and public awareness of main risk factors tobacco and alcohol - responsible for 75% of mouth cancers - must be raised. The growing threat of mouth cancers caused by the human papilloma virus (HPV), contracted through oral sex, cannot be ignored.

Those at risk are a wider group than ever. More and more cases display none of the traditional risk factors, while a growing proportion of women and a younger age-group than ever before are now being diagnosed.

The Blue Ribbon Badge Appeal will continue to help raise awareness during this year's MCAM. The Blue Ribbon enamel pin badge is the sign of the campaign and has helped raise funds and the profile of the campaign.

Free boxes of blue campaign ribbon badges are available to all surgeries, practices, health centres, pharmacies, hospitals, schools and businesses to help raise funds through donation and promote discussion of the disease.

Foundation chief executive Dr Nigel Carter said: "It is vital that we gain your support as recent shocking figures show mouth cancer is on the increase. This proves an urgent need to ensure that each and every dental patient is screened for mouth cancer and informed of the risks.

"People must understand the threat posed by tobacco and alcohol and HPV and be advised on the best possible lifestyle choices to stay healthy.

"This risk awareness is then augmented by oral screening and self-examination for warning signs such as ulcers which do not heal, red or white patches or other unusual changes in the mouth. This kind of early detection will save lives.

"Don't be the dentist who leaves a patient at risk of mouth cancer - make sure your practice is on message to spread awareness and that oral screenings are an effective, everyday priority."

The Foundation has made it easier than ever to get involved through the extended opportunity afforded by the month-long campaign, advised and supported by the Department of Health, Cancer Research UK.

Monday, August 24, 2009

Laser ultrasonic surface wave dispersion technique for non-destructive evaluation of human dental enamel

Hsiao-Chuan Wang, Simon Fleming, Yung-Chun Lee, Sue Law, Michael Swain, and Jing Xue
Optics Express, Vol. 17, Issue 18, pp. 15592-15607


This paper describes a novel optical system for clinical diagnosis of dental enamel based on its elasticity. Current examination techniques are typically destructive, and frequently impractical for in-vivo inspection. This paper describes the first application of a laser ultrasonic non-destructive evaluation (NDE) method for clinical dental diagnosis. It performs remote elasticity evaluation on small dimension samples. A focused laser line-source generates broadband surface acoustic wave (SAW) impulses which are detected with a simplified optical fibre interferometer. The measured SAW velocity dispersion spectrum was in turn used to characterise the elasticity of the specimen. Different metal structures were measured to verify the system performance. The results agree well with theoretical values and confirm the reliability and accuracy of the laser NDE system. This technique was then applied to evaluate the surface of sound natural human dental enamel. The measured dispersion spectra match theoretical expectations and the influences of both the enamel and the underlying dentin on the surface wave propagation were observed. This is the first time, to the best of our knowledge, that a laser based SAW velocity dispersion technique has been successfully applied on human dental enamel. As a remote, non-destructive technique it is applicable in-vivo and opens the way for early diagnosis of dental caries.

Saturday, August 22, 2009

Recurrent sores by ill-fitting dentures and intra-oral squamous cell carcinoma in smokers

Gabriela Fürst Vaccarezza, DDS, MSc; José Leopoldo Ferreira Antunes, PhD; Pedro Michaluart-Júnior, PhD
Journal of Public Health Dentistry
Early View (Articles online in advance of print)

Published Online: 20 Aug 2009


Objectives: To examine whether denture use and recurrent sores caused by ill-fitting dentures are associated with intra-oral squamous cell carcinoma (IO-SCC) in individuals exposed to tobacco.

Methods: We conducted a hospital-based case-control study. The study population comprised 124 patients with IO-SCC and the same number of controls (individually paired according to gender and age) recruited from outpatient units of the same hospital. Conditional logistic regression analysis assessed the effect of denture use and recurrent oral sores by ill-fitting dentures, adjusted by covariates on the lifetime exposure to alcohol and tobacco, socioeconomic standings, and dietary patterns.

Results: The use of dentures showed no association with IO-SCC [adjusted odds ratio (OR) 1.40, 95 percent confidence interval 0.51-3.87, P = 0.513] in an assessment controlled by socioeconomic position, lifetime exposure to alcohol and tobacco, and dietary patterns. However, the report of recurrent sores caused by ill-fitting dentures showed significant association with the disease (adjusted OR 4.58, 95 percent confidence interval 1.52-13.76, P = 0.007).

Conclusions: The association between recurrent oral sores caused by ill-fitting dentures and squamous cell carcinoma of the mouth in smokers is in agreement with the hypothesis that the chronic physical irritation of oral mucosa contributes to the topical carcinogenic effect of tobacco, which must be taken into careful consideration in the planning of dental services for adults and the elderly.

Friday, August 21, 2009

Dentrix G4 Productivity Pack 6

Henry Schein Practice Solutions is excited about the upcoming release of the new DENTRIX G4 Productivity Pack 6. This new Productivity Pack, previously known as a Service Pack, offers added features that will help your office increase production, reduce downtime and protect your patient's privacy. Highlights of this release include added features and functionality to:

Family File
Patient Protection
Patient Eligibility
Perio Chart
Auto Dial
If you are currently on a Customer Service Plan, this Productivity Pack will be available to you through the DENTRIX auto-update feature.

The DENTRIX Productivity Pack 6 will be available soon. Look for more information and details about the new Productivity Pack in the coming weeks.

Wednesday, August 19, 2009

Spectra Caries Detection receives FDA approval

Air Techniques Spectra is a fluorescence based caries detection system that has just received FDA approval. Spectra identifies cariogenic bacteria based on the fluorescence principle. LED's project high-energy blue light onto the tooth surface. Light of this wavelength stimulates bacteria to fluoresce red, while healthy enamel fluoresces green.

When used with Visix imaging software a live monitor image will highlight the carious lesions in different colors and will also report potential caries severity on a scale from 0 to 5. Based on this information the doctor can further examine the identified area to observe, re-mineralize or restore.

Take advantage of Spectra's detection capabilities as an ideal complement to X-rays during patient exams.

More information as I get it.

Click here for the Spectra FAQ

South Carolina Woman Awarded $2 Million After Dentist Mistakenly Pulls 13 Teeth

A South Carolina woman has won a $2 million jury verdict against a dental clinic that mistakenly pulled 13 teeth.

The State reported that 28-year-old Elizabeth Smith of Sumter wanted three teeth pulled when she went to the Sexton Dental Clinic in Florence in 2006. Her lawsuit says a dentist at the clinic pulled all 16 of her upper teeth.

Tuesday, August 18, 2009

Align settles with Ormco

Shares of Align Technology Inc. jumped Monday after the dental products company settled a patent infringement lawsuit regarding its Invisalign teeth-straightening system.

Align agreed to issue $77 million in stock to Danaher Corp., and pay about $13 million to Danaher's Ormco business. Align and Ormco will also collaborate to make an orthodontic product combining their technologies. In June, a jury found that Invisalign violated a patent held by Danaher.

Shares of Santa Clara, Calif.-based Align rose $1.64, or 16.1 percent, to $11.77 in afternoon trading.

Standard & Poor's Equity Research analyst Phillip Seligman upgraded Align shares "Hold" from "Strong Sell" on the news, and raised his price target to $13 per share from $6. He said the stock would get a lift from the settlement, and added that investors will find Align shares more appealing as they look for a 2010 economic recovery.

Monday, August 17, 2009

Dental care on a budget

Dental care on a budget
Dodging the dentist over cost can be pound-foolish. There are ways to save.
Read the LA Times article.

Saturday, August 15, 2009

OraPharma Renewing ARESTIN® Student Access Program

Innovative Program Supplies Participating Dental and Dental Hygiene Schools with Product and Course Materials for ARESTIN® Hands-On Instruction

Warminster, PA – August 13, 2009 – OraPharma, Inc., a specialty oral health company dedicated to bringing scientifically and technologically superior products to the dental community, including ARESTIN® (minocycline hydrochloride) Microspheres, 1 mg, recently expanded its commitment to providing educational support and training to dental and dental hygiene schools by renewing the ARESTIN® Student Access Program and by creating a new Professional Affairs Team to provide field support and instructor training for the program.

The ARESTIN® Student Access Program was implemented a few years ago as the result of discussion and collaboration between OraPharma and the directors of leading dental and dental hygiene schools. According to ARESTIN® Product Director Ben Sandefur, “Our mutual goal was to develop a program that would provide educational programming and hands-on training so that dental and dental hygiene students can learn how to appropriately incorporate locally administered antibiotics like ARESTIN® as part of a comprehensive periodontal disease treatment protocol.”

During the 2008-2009 school year, 118 dental and dental hygiene schools and over 2,800 dental and dental hygiene students participated in the ARESTIN® Student Access Program.

Enrollment for the 2009-2010 program is available to all accredited two- or four-year dental and dental hygiene schools as well as periodontal specialty programs that include instruction on the use of ARESTIN® as part of a comprehensive periodontal treatment protocol. Participating schools will receive the following ARESTIN® Student Access Program materials:

• ARESTIN® Trial Kits containing 12 ARESTIN® cartridges for clinical use by each participating student.

• Faculty Education Kits containing valuable clinical and patient resources regarding periodontal therapy and ARESTIN®, as well as educational content for classroom lectures and demonstration product for hands on laboratory to ensure each student is able to practice placing ARESTIN® prior to treating patients.

• Student Education Kits including valuable clinical and patient education resources regarding periodontal therapy and ARESTIN®.

• Two ARESTIN® handles at no charge and the ability to order additional discounted ARESTIN® handles ($32.00 each) for all participating students

The OraPharma, Inc Professional Affairs Team will provide enhanced support and introduce additional academic programs to dental and hygiene schools. This team will also provide best practices training and education for course directors in schools participating in the ARESTIN® Student Access Program.

“The ARESTIN® Student Access Program helps ensure that ARESTIN® will continue to be widely available for clinical use by all dental and dental hygiene school students. Today’s students represent the next generation of oral health professionals,” explained Sandefur. “It’s important that they have training and experience with the most common periodontal disease options upon graduation.”

Dental and dental hygiene school faculty who wish to participate in the ARESTIN® Student Access Program can get more information and register for the program at If you require more information, please contact the OraPharma, Inc Professional Education team at 1-888-553-6010 extension 0627.-

Thursday, August 13, 2009

How To Manage Dental Erosion Caused By Everyday Beverages

ScienceDaily (Aug. 8, 2009) — Researchers have warned people to beware of the damage that acidic beverages have on teeth. Yet, for some, the damage and problems associated with drinking sodas, citric juices or certain tea may have already begun to take effect. The question remains: What can be done to restore teeth already affected?

In a recent study that appeared in the May/June 2009 issue of General Dentistry, the AGD's clinical, peer-reviewed journal, lead author, Mohamed A. Bassiouny, DMD, MSc., PhD, outlined the acidic content of beverages, such as soda; lemon, grapefruit and orange juice; green and black tea; and revealed three steps to rehabilitate teeth that suffer from dental erosion as a result of the excessive consumption of these products.

Dr. Bassiouny instructs those who are experiencing tooth erosion to first, identify the culprit source of erosion, possibly with the help of a dental professional. Then, the individual should determine and understand how this source affects the teeth in order to implement measures to control and prevent further damage. Lastly, the person should stop or reduce consumption of the suspected food or beverage to the absolute minimum. He notes that information about the acid content of commonly consumed foods or beverages is usually available online or on the product's label. It is also recommended to seek professional dental advice in order to possibly restore the damaged tissues.

"Dental erosion," according to Dr. Bassiouny, "is a demineralization process that affects hard dental tissues (such as enamel and dentin)." This process causes tooth structure to wear away due to the effects that acid has on teeth, which eventually leads to their breakdown. It can be triggered by consumption of carbonated beverages or citric juices with a low potential of hydrogen (pH), which measures the acidity of a substance. Excessive consumption of the acidic beverages over a prolonged period of time may pose a risk factor for dental health.

"Some may not even realize a problem exists when their teeth are in the early stages of dental erosion," says Kenton Ross, DDS, FAGD, a spokesperson for the AGD. "Without proper diagnosis by a general dentist, more serious oral health issues could occur."

"Visiting your general dentists twice a year can help maintain healthy teeth as well as uncover and prevent future problems," says Dr. Ross.

Academy of General Dentistry (2009, August 8). How To Manage Dental Erosion Caused By Everyday Beverages. ScienceDaily. Retrieved

Wednesday, August 12, 2009

Join me for CE tomorrow. Pentron's Fusio Self Adhesive Composite

Advances in Flowable Composite Technologies
Presenter: Dr. Martin Jablow CE Credits: 1
Webcast Begins: 8/13/09 4:00 PM ET, 1:00 PM PT

Dr. Martin Jablow will discuss the advances in flowable composites. Learn how to use these new technologies in your office while improving patient care. As every dental practitioner knows, time is valuable, so sign-up now to learn how you can improve your dental techniques and earn free CE credit.

Click the link below to sign up

Tuesday, August 11, 2009

How effective are dental referrals by primary care physicians?

Toronto, ON, Canada - Young children from low-income families experience high levels of tooth decay and face many barriers to getting dental treatment and preventive services. Because these children usually visit their pediatrician or other primary care provider far more frequently than a dentist, the primary care medical setting is gaining popularity as a place to provide preventive dental services. Currently, physicians in more than 400 pediatric primary care offices in North Carolina (NC) have been trained to screen for tooth decay, so that referrals for those in need can be made to dentists. This effort is part of a preventive dental program known as "Into the Mouths of Babes" (IMB).

In a study undertaken by investigators at the University of North Carolina at Chapel Hill and Duke University, researchers examined factors that lead to dental referrals by physicians and whether these referrals result in dental office visits for children who received IMB services. The study used information from Medicaid reimbursement claims for IMB services provided during 2001 and 2002 and patient records completed by physicians for 24,403 children. The patient records provide information on the child's tooth decay experience, results of a dental risk assessment, and whether the child was referred to a dentist.

The investigators report their results today during the 86th General Session of the International Association for Dental Research. Of the 24,403 children in the study, about 5% had tooth decay, 2.8% were referred to a dentist, and 3.5% made a dental visit before 42 months of age. Among children with tooth decay, 32% were referred, and a higher percentage of children with a referral visited a dentist (35.6%) than those not referred (12.0%). Several factors were associated with whether a child received a referral to a dentist besides the presence of any decayed teeth, including increasing age of child, the availability of a general dentist in the county where the child received IMB services, and whether the child was seen in a practice located in a rural area.

In a second analysis, child tooth decay, a referral, increasing age of child, availability of a general dentist in the county, and having a dental visit prior to the first IMB visit were related to shorter time intervals between the referral and a dental visit.

The authors concluded that referrals by physicians increased access to dentists for children with tooth decay, but use of dentist services for those needing care remained low.


The study was funded by a grant from the National Institute of Dental and Craniofacial Research (NIDCR).

About the International Association for Dental Research

The International Association for Dental Research (IADR) is a non-profit organization with more than 10,800 individual members worldwide, dedicated to: (1) advancing research and increasing knowledge to improve oral health, (2) supporting the oral health research community, and (3) facilitating the communication and application of research findings for the improvement of oral health worldwide.

To learn more about the IADR, visit

This is a summary of an abstract entitled "Predictors and Effectiveness of Dental Referrals by Primary Care Physicians", by B.T. Pahel et al., of the University of North Carolina and Duke University, to be presented at 3:30 p.m. on Friday, July 4, 2008, in Hall D-E of the Metro Toronto Convention Centre, Toronto, ON, Canada, during the 86th General Session of the International Association for Dental Research.

Monday, August 10, 2009

As if Align Didn't have enough problems

ALIGN TECHNOLOGY INC in Santa Clara, California is being investigated by the law offices of Howard G. Smith in Bensalem, Pennsylvania for potential securities violations that occurred in 2007.

This is from the Smith Law Web Site:
This investigation is on behalf of investors in the common stock of Align Technology, Inc. (NASDAQ: ALGN) who acquired their shares between January 30, 2007 and October 24, 2007.

The Law Offices of Howard G. Smith believes that Align Technology and certain of its executives violated federal laws. The Law Offices of Howard G. Smith believes that, throughout the time period mentioned above, the defendants made materially false statements about the Company’s financial condition. Specifically, the Law Offices of Howard G. Smith believes that the Defendants mislead investors into believing that its prospects for future sales of its Invisalign product were greater than they really were.

On October 24, 2007, the Company acknowledged that, in an effort to clear prior backlog, “we did not focus enough effort on filling the pipeline for new case starts,” and had to refocus its field and channel marketing teams to generate case growth. In response to this news, on October 25, 2007, shares of Align stock plummeted over 33% from its previous day's close, on heavy volume.

Additionally, it has come to light that in the months prior to the Company's October 24, 2007 announcement, certain company insiders sold hundreds of thousands of shares of their personally held Align common stock for gross proceeds in excess of $20 million.

The Law Offices of Howard G. Smith seeks to recover damages on behalf of class members. If you acquired common stock in Align Technology, Inc. (NASDAQ: ALGN) between January 30, 2007 and October 24, may join the lawsuit by submitting your information online, or you may call the Law Offices of Howard G. Smith and speak to Mr. Smith directly to learn how he can protect your rights.

Sunday, August 09, 2009

3D Diagnosis and Planning for Orthodontics and Orthognathic Surgery

BIRMINGHAM, Ala., Aug. 4 /PRNewswire/ -- DENTSPLY GAC announced today the worldwide release of VistaDent 3D, a diagnosis and planning software package for interpreting 3D DICOM data. VistaDent 3D offers many unique diagnostic features that allow dental professionals to analyze tooth roots, TMJ, impacted teeth, mixed dentition, mandibular nerve, tooth root positions, cortical bone thickness and bone quality, sinus cavity, and more -- all in 3D. It not only provides clinicians with accurate diagnostic tools but also contains a planning environment where users can virtually plan the placement of Temporary Anchorage Devices, oral and maxillofacial surgeries, occlusion of dentition, and simulate soft tissue profiles after treatment.

"VistaDent 3D is just another example by which DENTSPLY GAC is seeking to translate technology to treatment in the world of orthodontics," said Thomas Macari, DENTSPLY GAC's Director of Research and Development. "With breakthrough applications to benefit not only orthodontists, but also oral surgeons and other clinicians, we are thrilled to offer VistaDent 3D to even more users."

Traditional and 3D versions of industry standard Cephalometric Analyses such as Steiner, Ricketts, Tweed, Downs, etc. are available in VistaDent3D. Users can also create their own customized analyses using points, lines, planes, angles, distances and proportions. "VistaDent 3D offers clinicians a precise 3D environment for diagnosis, analysis and planning that leads to a predictable outcome and a renewed sense of confidence," explained Charles Dunham, DENTSPLY GAC's Software Manager . "The real world is 3D and our goal with VistaDent 3D is to give users different ways to interpret 3D data so that they can make the best clinical decisions."

Integration with VistaDent OC provides a complete solution for both orthodontists and oral surgeons. OrthoPlex(TM) users will be able to combine high-resolution digital models with cone-beam CT data and visualize the patient's occlusion before and after surgery. With stunning 3D diagnosis, analysis, and treatment planning capabilities, VistaDent 3D is a premier diagnostic and planning software.


VistaDent 3D can be used in a networked or single-user environment. It can be run as a standalone program or an additional module to VistaDent OC.

VistaDent 3D is currently available in North America, Europe, parts of South America and Asia either directly from Dentsply GAC, or through authorized distributors and/or partners outside US and Canada. For further information about pricing and availability, call 888.422.2376 (+1 205.945.8911 outside North America).

Saturday, August 08, 2009

Lava™ Chairside Oral Scanner from 3M ESPE Now Available Nationwide with Powerful Software Upgrade

ST. PAUL, Minn. – (August 3, 2009) – After debuting with a regional rollout, the 3M™ ESPE™ Lava™ Chairside Oral Scanner C.O.S. is now available to dentists nationwide, allowing offices across the country to experience the productivity boosts achieved with digital impressioning. Additionally, the scanner’s upgraded software, Lava Software 2.0 for Chairside Oral Scanner, offers dentists greater ease of use. With nationwide availability and a full list of approved indications that includes crowns, multiple adjacent units, inlays/onlays, 3-4 unit bridges, seated implant abutments and veneers, it is now easier than ever for dentists to prescribe traditional PFM or sophisticated CAD/CAM restorations and to experience the benefits of the digital workflow.
Data shows that the precise restorations created with the Lava C.O.S. bring dramatic productivity gains and attract new patients to dental offices. By using the Lava C.O.S. to create detailed 3D impressions, dentists using the system have reported a 41 percent reduction in seating times for single unit crowns1 and a remake rate due to marginal fit that is 80 percent below the reported industry average.2 Additional productivity gains are now possible with Lava Software 2.0, which introduces several upgrades to the system, including easier anterior and full arch scanning, a faster scanning speed, and reduced processing times.
“These advancements signify our commitment to the progression of digital impressions as the standard of choice for the impression-taking procedure,” said Wayne Roen, business director, digital restorative dentistry, 3M ESPE. “With our nationwide availability for dentists and our flexible outsourcing model for labs, we seek to provide easy access to the digital workflow and the efficiency that comes with it.”
Working closely with a core group of Lava C.O.S. users over the past year, 3M ESPE has enhanced the system based on user feedback to further increase its benefits, namely the level of productivity that is facilitated by digital impression-taking.
“I’ve been amazed with the productivity I’ve experienced with the Lava C.O.S." said Dr. John Weston, a dentist who has tested the new software and has completed hundreds of restorations. “Now, with the new software the overall speed, ease of use and ability to capture full arches have improved significantly, and our cases require virtually no adjustments.”
"The new Lava C.O.S. software has enabled me to do larger cases in fewer visits, thereby making my practice more profitable,” said Dr. Ronald Rosenburg. “Full arch dentistry has become so much easier and less stressful. Overall the Lava C.O.S. has made dentistry so much fun and has made me a better dentist."
The Lava C.O.S. is a digital impression system that features 3M ESPE’s proprietary 3D-in-Motion technology. This technology allows doctors to capture and simultaneously view continuous 3D video images, and the dental industry is the first to benefit from this breakthrough in digital imaging. Doctors can assess their preparation and margin using several review features unique to digital dentistry. Doctors can specify either a traditional (PFM) or CAD/CAM restoration, including a Lava Restoration, and then send the digital prescription to their lab for marking the margin and cutting the die. The process is complete once the lab receives a technologically advanced stereolithography (SLA) model for finishing and ships the final restoration back to the doctor.
Any dentist can purchase a Lava C.O.S. and any lab can participate in the digital workflow, utilizing a business model that requires no capital investment from a lab and allows doctors to work with their existing labs.
For more information, visit or call 1-800-634-2249.

Friday, August 07, 2009

Replacement teeth grown in mice

Researchers in Japan have successfully grown replacement teeth in mice, according to a report in PNAS journal.

Read the BBC article

Thursday, August 06, 2009

The development of sleep disordered breathing from 4 to 12 years and dental arch morphology

E. Hultcrantz, B. Löfstrand Tideströmb


To track the development of sleep disordered breathing (SDB) as well as dento-facial morphology in cohort of children by having them complete a questionnaire at ages 4, 6 and 12. Clinical examination, sleep studies (at ages 4 and 12) and orthodontic evaluation were carried out on all who were reported to snore regularly and children who did not snore at all.

Out of the original group of 615 children, 64% (393) answered the inquiry on all three occasions. Of those, 27 snored regularly and 231 did not snore at all at the age of 12. There were differences between those groups on all answers, especially prevalence of oral breathing: 78% versus 5% (p<0.001). The prevalence of OSA decreased from 3.1% at the age of 4 to 0.8% at age 12 and the severity decreased from a mean AHI 14.8 at 4 to a mean AHI of 1.95 at age 12. The minimum prevalence of snoring regularly was estimated to 4.2% at 12 years compared to 5.3% at 4, calculated for the original cohort of 644 children. The odds for a child who snored regularly at 4 or 6 years to be snoring regularly also at age 12 was 3.7 times greater than for a not snoring child in spite of surgery (OR 3.7, 95% CI 2.4–5.7). 63 children had undergone surgery due to snoring by age 12. 14 of them never snored and 17 snored regularly at the age 12. The dental arch was narrower in the children snoring regularly at 4, 6 and 12 years compared to not snoring children. Cross-bites were more common among snoring children than among non-snoring children, at 4 and 6 as well as at 12.

The prevalence of regular snoring is about the same from 4 to 12 years independent of surgery, but the prevalence of OSA decreased considerably. The children snoring regularly generally have a narrower maxilla compared to children not snoring. Surgery in young children is necessary but “cures” the snoring only temporary.

Wednesday, August 05, 2009

The influence of light-curing time on the bacterial colonization of resin composite surfaces

Eugenio Brambillaa, Massimo Gagliania, Andrei Ionescua, Luigi Fadinia, Franklin García-Godoyb
Dental Materials Volume 25, Issue 9, Pages 1067-1072 (September 2009)


Bacterial colonization of composite surfaces represents the main factor in the etiology of secondary caries around adhesive restorations. The authors’ aim was to evaluate the influence of light-curing time on mutans streptococci colonization (MS) of a resin composite material.

Specimens obtained from a dental resin composite were divided into 12 groups and light-cured with the same light source respectively for 10, 20, 30, 40, 60 or 80s using two different curing-power levels: 400 and 800mW/cm2. A wild strain of MS was isolated and a 24-h-monospecific biofilm, adherent to the surfaces of the samples, was obtained. A colorimetric technique (MTT assay), based on the reduction of a yellow tetrazolium salt to a purple formazan, was used to evaluate the biomass adherent to the specimen surfaces. ANOVA and Scheffé’s tests were used to statistically analyze the results.

Two-way ANOVA demonstrated there was no interaction between curing-time factor and curing-power factor (p=0.970); one-way ANOVA was used to analyze separately the data obtained from each curing-power level. Both levels showed highly significant differences (p<0.0001) among the different curing time groups. The non-parametric test for trend showed in both levels the existence of a highly significant trend (p<0.0001) for bacterial colonization reduction as curing time increases.

A reduced curing time seems to be responsible for increased in vitro colonization of composite surfaces by MS; this phenomenon is likely to be related to the presence of unpolymerized monomers on the material surface.

Monday, August 03, 2009

Join me on the upcoming webinar by clicking here

Advances in Flowable Composite Technologies
Presenter: Dr. Martin Jablow CE Credits: 1
Webcast Begins: 8/13/09 4:00 PM ET, 1:00 PM PT

Dr. Martin Jablow will discuss the advances in flowable composites. Learn how to use theses new technologies in your office while improving patient care. As every dental practitioner knows, time is valuable, so sign-up now to learn how you can improve your dental techniques and earn free CE credit.

Saturday, August 01, 2009

Oral sex cause of throat cancer rise

Author: Salynn Boyles

Changing sexual practices have led to a dramatic rise in throat cancer in the United States over the past two decades, and experts say they fear an epidemic of the disease.

The comments were made Wednesday at a news conference held by the American Association for Cancer Research to discuss research into the role of the sexually transmitted human papilloma virus ( HPV) in head and neck cancer.

Increasing rates of HPV infection, spread through oral sex, is largely driving the rapid rise in oropharyngeal cancers, which include tumors of the throat, tonsils, and base of the tongue, said Scott Lippman, MD, who chairs the thoracic department at the University of Texas M.D. Anderson Cancer Center.

Studies of oropharyngeal tumor tissue stored 20 years ago show that only around 20% are HPV positive, Lippman said. Today it is estimated that 60% of patients are infected with the virus.

“The percentage of oropharyngeal cancers that are HPV positive is much higher now than it was 20 years ago,” he said. “This is a real trend, and that is why there is concern of an epidemic given that fact that oropharyngeal cancer is increasing at an alarming rate.”

Changing Face of Throat Cancer
Smoking and alcohol abuse were once considered the only major risk factors for these cancers, but this is no longer the case.

American Cancer Society Chief Medical Officer Otis Brawley, MD, said as many as half of the oropharyngeal cancers diagnosed today appear to be caused by HPV infection.

“Changing sexual practices over the last 20 years, especially as they relate to oral sex, are increasing the rate of head and neck cancers and may be increasing the rates of other cancers as well,” he said.

He added that there is some evidence that oral HPV infection is also a risk factor for a type of cancer of the esophagus.

“The paradigm is changing,” Lippman said. “The types of patients we are seeing now with oropharyngeal cancers are not the patients we have classically seen who were older, smokers, and have lots of other problems. These are young people, executives, a whole different population.”

Oral Sex Not Safe Sex
The experts agreed that it is critical for the public to understand that oral sex doesn’t equal safe sex. The message was unofficially promoted in the early days of the HIV epidemic and it is still widely believed by many, especially teens.

Studies suggest that teens are often unaware of the risks associated with unprotected oral sex, including the transmission of HPV, chlamydia, and gonorrhea.

“There is a huge public health message here,” Brawley said.