Search

AIMS The purpose of this study was to evaluate the effect of fluoride-releasing elastomeric modules in the control of Streptococcus mutans levels in the oral cavity. MATERIALS AND METHODS The study consisted of 30 patients, with two experimental periods of three weeks and a three-week washout period between experimental periods. At the first visit, fluoridated modules were placed around brackets on 12 11 33 and non-fluoridated ones on 21 22 43. During the 2nd visit, the modules were removed and sent for a microbiological analysis. Non-fluoridated modules were placed on all brackets for one visit to allow for a washout period. At the 3rd visit, fluoridated elastomeric modules were placed around brackets on 21 22 43 and non-fluoridated on 12 11 33. At the 4th visit, the procedures at the 2nd visit were repeated. RESULTS A mean comparison between bacterial counts of fluoride-releasing and non-fluoridated elastomeric modules in both the trials were done by the Mann-Whitney U test, which showed the result to be significant (p < 0.001). The mean comparison of bacterial counts between fluoride-releasing and non-fluoridated elastomeric modules in a specific area was done by the Wilcoxon signed rank test, which showed the result to be significant (p < 0.001). A comparison between bacterial counts of fluoride-releasing elastomeric modules in both trials were done by the Mann-Whitney U test, which also showed a significant result (p < 0.001). CONCLUSION The sustained-release fluoridated elastomeric modules are effective in reducing the levels of Streptococcus mutans in dental plaque around the brackets for a time period of 21 days. CLINICAL SIGNIFICANCE The sustained-release fluoridated modules were effective in reducing the CFU of S. mutans and are also stable at the end of 21 days of the experimental period. But the action of fluoride released from the modules is localized, temporary, and requires constant maintenance of these modules over the brackets throughout the treatment period.

The purpose of this study was to evaluate the effect of fluoride-releasing elastomeric modules in the control ofThe study consisted of 30 patients, with two experimental periods of three weeks and a three-week washout period between experimental periods. At the first visit, fluoridated modules were placed around brackets on 12 11 33 and non-fluoridated ones on 21 22 43. During the 2nd visit, the modules were removed and sent for a microbiological analysis. Non-fluoridated modules were placed on all brackets for one visit to allow for a washout period. At the 3rd visit, fluoridated elastomeric modules were placed around brackets on 21 22 43 and non-fluoridated on 12 11 33. At the 4th visit, the procedures at the 2nd visit were repeated.A mean comparison between bacterial counts of fluoride-releasing and non-fluoridated elastomeric modules in both the trials were done by the Mann-WhitneyThe sustained-release fluoridated elastomeric modules are effective in reducing the levels ofThe sustained-release fluoridated modules were effective in reducing the CFU of

Most of the skeletal malocclusions which require orthognathic surgeries are treated by traditional approach which requires time-consuming and unesthetic presurgical orthodontic phase. Surgery first approach (SFA) avoids these disadvantages of the traditional approach. A 24-year-old female patient with skeletal and dental class II malocclusion due to retrognathic mandible was treated with SFA. Bilateral sagittal split osteotomy with mandibular advancement was done immediately after initial alignment and closure of the existing spaces in the maxillary arch. Angle's class I molar and canine relation was achieved after surgery. Bonding of the mandibular arch was done after 1 month of orthognathic surgery and treatment was completed within 13 months. A wrap-around retainer was placed in upper arch, and bonded lingual retainer was given in the lower arch.

Treating impacted teeth is very challenging for an orthodontist. Although canine impactions are common, second molar impactions are also encountered in orthodontics. The fate of impacted second molar depends on various factors such as the degree of its inclination and position of third molars. A case of molar uprighting using a 0.017″ × 0.025″ titanium molybdenum alloy uprighting spring is discussed in this case report. Treatment included surgical exposure and crown lengthening along with orthodontically assisted eruption.

Deep bite management and retention are cumbersome as the stability is questionable, especially when the correction is achieved by posterior extrusion in nongrowing patients. Hence, it is advisable to intrude the anteriors; however, as conventional methods of anterior intrusion tax the anchorage, choosing biomechanics which ensure stable anchorage is our goal. The use of mini-implants has revolutionized biomechanics in orthodontics with better results as far as anchorage is concerned. This case report supports the literature regarding the implant-supported anchorage for true intrusion.

Objectives: To investigate the influence of orthodontic treatment on pharyngeal airway size and position of hyoid bone in patients treated with extraction of all first premolars. Materials and Methods: Pre- and post-treatment lateral cephalograms of twenty patients were obtained, and cephalometric analysis was done to assess skeletal and dental changes, airway dimensions, and hyoid bone position using 17 linear and 4 angular measurements. Results: All the readings were statistically analyzed using paired t -test. Change in nasopharyngeal airway size was not statistically significant. However, airway size was reduced significantly at soft palate (SPP-SPPW) by 7.4%, at uvula (U-MPW) by 19.2%, at tongue (TB-TPPW) by 20.8%, and at the base of tongue (V-LPW) by 13.2%. The analyzed linear measurements showed relocation of hyoid bone in an inferior direction. Simple linear correlation analysis revealed positive correlation between incisor retraction and airway size. Conclusions: There was a significant narrowing of pharyngeal airway behind soft palate, uvula, and at the base of the tongue following retraction. There is a change in the position of the hyoid bone in an inferior direction as an adaptation preventing an encroachment of the tongue into the pharyngeal airway.

Adult patients with severe skeletal malocclusions require orthognathic surgeries. Two case reports with skeletal Class II malocclusion due to retrognathic mandible discussed in this article were treated by bilateral sagittal split osteotomy mandibular advancement. Treatment results showed good improvement in facial profile, Angle Class I molar and canine relation, good occlusion after surgery for both the cases.