Gap Arthroplasty or Interpositional Arthroplasty for the Management of TMJ Ankylosis? A Prospective Randomized Comparative Multicenter Clinical Trial.

AIM: The main aim of this study is to compare the gap arthroplasty with interpositional gap arthroplasty for the management of TMJ ankylosis. METHODOLOGY: A prospective randomized multicenter clinical trial had been performed, on 60 patients diagnosed with TMJ ankylosis from August 2005 to June 2015. Patients were equally divided into two groups: Group I patients were treated with gap arthroplasty, while patients in Group II were treated with interpositional arthroplasty. RESULTS: The mean age in Group I was 27.9 years and in Group II was 25.6 years. Trauma was the common etiological factor in both the groups. The mean postoperative mouth opening after 1 month, 6 months and 24 months was found to better in Group II. Open bite after 24 months was present in six patients in Group I and in one case in Group II. Permanent facial nerve palsy was present in one patient in both the groups. Frey's syndrome was present in one patient from Group I and none from Group II. Reoccurrence occurred in eight cases from Group I (26.6%) and none from Group II. CONCLUSION: This study concluded that interpositional arthroplasty is better than gap arthroplasty in terms of mouth opening and reankylosis.

Lingual Bracket Systems with Self Etching Primers- An In Vitro Study to Evaluate Shear Bond Strength.

AIM: To evaluate the shear bond strength of orthodontic lingual bracket systems bonded to extracted premolar teeth (Reliance self-etching primer, Clearfil Protect Bond) and self-etching primer (Clearfil SE Bond) Materials and methods: A total of 160 extracted human first premolars were selected and divided into four groups of 10 for each bracket system to be used with four different primers. Each sample was then embedded in an acrylic block, till the coronal portion. Instron testing machine model LR LOYD 50 K was used for testing the shear bond strength. RESULTS: The results obtained, suggested that all the primers had clinically acceptable shear bond strength with all the bracket system considered in the study. However, there were statistically significant differences in the shear bond strength in intergroup comparisons. CONCLUSION: The Reliance Self-Etching primer showed the highest bond strength with Alias lingual bracket system by Ormco, followed by clearfil protect bond, clearfil SE bond, and transbond, with the Alias lingual bracket system in the same order. CLINICAL SIGNIFICANCE: This study was initiated to understand the shear bond strength of self-etching primer and its efficacy over the conventional primer, which will be of use to the clinician while selecting the primer for bonding of the bracket systems and overcome debonding of brackets encountered during the treatment progress.

Comparison of Shear Bond Strength of New Self-etching Primer with Conventional Self-etching Primers: An In-vitro Study.

BACKGROUND: In the past few years, there has been a major research drive to increase bond strength between dental materials and dental hard tissue and to reduce the associated demineralization around fixed orthodontic appliances. Thus, a recent approach is to incorporate an antibacterial agent into the primer to reduce the demineralization and enhance bond strength. The objective of this study was: (1) To evaluate the shear bond strength of orthodontic preadjusted edgewise appliance brackets bonded to extracted premolar teeth with antimicrobial self-etch primer (Reliance self-etching primer, Clearfil Protect Bond) and self-etching primer without antimicrobial agent (Clearfil SE bond). (2) To compare the mean shear bond strength values of the tested materials to conventional self-etching primer Transbond Plus. MATERIALS AND METHODS: A total of 125 extracted human premolar teeth were randomly divided into five groups of 25 teeth each. Each sample was embedded in an acrylic block of polymethyl meth acrylate resin till coronal portion. Instron testing machine model LR LOYD 50 K was used for testing the shear bond strength of individual samples. RESULTS: The results of the study showed that all five groups had adequate clinically acceptable bond strength. In intergroup comparison, there was statistically significant difference in bond strength of Reliance self-etching primer, Promt L pop, Clearfil Protect Bond, clearfil SE bond and Transbond Plus. CONCLUSION: Reliance self-etching primer showed highest bond strength, followed by Clearfil Protect Bond, clearfil SE bond, and Transbond Plus. Clearfil Protect Bond primer containing methacryloxy dodecyl pyridium bromide have been demonstrated to kill Streptococcus mutans within a short time of contact and also exhibits an inhibitory effect on the growth of bacteria on its surface.

Management of gummy smile with Botulinum Toxin Type-A: A case report.

A 23 year old female patient presented with the chief complaint of gummy smile after previously undergoing Orthodontic treatment. Patient had a straight profile with competent lips and during posed and unposed smile the patient exhibited excessive gingival display. Since the patient was unwilling to undergo Orthodontic treatment and apprehensive about surgical procedures, this problem was addressed by injecting Botulinum toxin type-A as an alternative treatment approach. Two weeks post treatment; on follow up examination, improved results were seen without any side effects. As a result, an attractive and confident smile was perceived by the patient. How to cite the article: Dinker S, Anitha A, Sorake A, Kumar K. Management of gummy smile with Botulinum Toxin Type-A: A case report. J Int Oral Health 2014;6(1):111-5.