Dentaltown August 2013 - (Page 96)

hygiene and prevention perio reports Parafunctional Habits Linked to TMD in Teens Temporomandibular dysfunction or TMD is characterized by three symptoms: pain, joint noises and difficulty opening the mouth. Parafunctional habits are linked to TMD. These include nail biting, clenching, grinding, lip or object biting and gum chewing. Researchers at two universities in Sao Paulo, Brazil, surveyed 244 adolescents enrolled in elementary and high school in the city of Sao Roque in the state of Sao Paulo, Brazil, regarding harmful habits and TMD signs and symptoms. The children ranged in age from 10 to 20 years. All the questions on the survey were yes/no design. Children were asked about parafunctional habits (listed above) and signs and symptoms of TMD: headache, joint noise, difficulty or pain upon chewing, tired feeling in the face, “locked” jaw, facial pain and difficultly opening the mouth. The screening questionnaire was developed by the American Academy of Orofacial Pain. Identification of three or more signs of TMD indicates need for a definitive diagnosis of TMD. Headache was the most common symptom, reported by 41 percent. Noise in the joint was reported by 25 percent and 14 percent reported difficulty talking or chewing. Facial fatigue was reported by 10 percent, and nine percent reported experiencing “locked” jaw. At least one harmful oral habit was reported by 16 percent, two by 20 percent, three by 39 percent and no oral habits by 25 percent. There was a significant correlation between the number of harmful oral habits and the number of TMD symptoms. Clinical Implications: Evaluate teens for parafunctional habits as they are linked to TMD. n Perio Reports Vol. 25, No. 8 Perio Reports provides easy-to-read research summaries on topics of specific interest to clinicians. Perio Reports research summaries will be included in each issue to keep you on the cutting edge of dental hygiene science. t www.hygienetown.com Motta, L., Guedes, C., DeSantis, T., Fernandes, K., Mesquita-Ferrari, R., Bussadori, S.: Association Between Parafunctional Habits and Signs and Symptoms of Temporomandibular Dysfunction Among Adolescents. Oral Health Prev Dent 11:3-7, 2013. Does Light Enhance Whitening? Researchers report conflicting results when comparing tooth whitening with and without the use of an intensifying light. Some show that the light helps to whiten teeth while others show it has no effect. Researchers in the division of dental hygiene at Ohio State University in Columbus, Ohio, compared whitening with and without the use of the Zoom light from Discus Dental, a division of Philips. The study included 49 patients whose teeth were whitened using a 25 percent hydrogen peroxide gel, Discus Zoom 2. For each patient, the gingiva was isolated using a light-cured resin dam, Discus Liquidam. The whitening gel was placed on the maxillary and mandibular anterior teeth at a thickness of 2mm. The gel was placed on the right or left half (depending on random assignment) and the sodium arc light positioned directly in front of the mouth for 15 minutes. The gel was then removed with high volume evacuation and new gel was applied. This process was repeated for three 15-minute whitening sessions. The opposite sides of the arches were then treated with three 15-minute whitening sessions without the light. Patients were seen at one week and two weeks to take the shade and get their feedback on whitening and sensitivity. At one week, the maxillary teeth whitened using the light were found to be a lighter shade. At two weeks, there was no difference. Patients saw no difference at any time. Very little sensitivity was reported. Clinical Implications: When whitening with 25 percent hydrogen peroxide the light will only produce a lighter tooth shade for one week. n Henry, R., Bauchmoyer, S., Moore, W., Rashid, R.: The Effect of Light on Tooth Whitening: A Split-Mouth Design. Int J Dent Hygiene 11:151-154, 2013. continued on page 98 96 AUGUST 2013 » dentaltown.com http://www.hygienetown.com http://www.dentaltown.com

Table of Contents for the Digital Edition of Dentaltown August 2013

Dentaltown.com Highlights
Howard Speaks: Dentists Are Still Doing Way Too Many Three-Unit Bridges
Professional Courtesy: Hire Slow, Fire Fast
Continuing Education Update
Second Opinion: Finally, One Adhesive that Can Do It All
All-on-4?
Intracornal Bleaching of Endodontically Treated Teeth
Product Profile: CAESY
Product Profile: ClearCorrect
Product Profile: DENTIS USA
Product Profile: Imaging Sciences
Corporate Profile: 123 Postcards
New Products
The Silent Killer of Dentistry
Industry News
Smile Design
Endo Versus Implants: Does Your Treatment Plan Pass the “Mama Test”?
Improving the Future of Overdentures with Small Diameter Implants and Locator Attachments
The Democratization of Dental Implants for General Dentistry
Single Tooth Implant Case
Continuing Education: The Dental CAD/CAM Evolution of 2013
Beatlemania Has Deep Roots
In This Issue: The Value of Saliva Testing
Perio Reports
Ad Index
Profile in Oral Health: Salivary Testing in the Office
Dentally Incorrect

Dentaltown August 2013