Prevalence and type of oral mucosal lesions in patients with fixed orthodontic appliances

Objective: Specific objective of this study was to determine the Prevalence and type of oral mucosal lesions in subjects with orthodontic appliances during first month of treatment

Study Design: Observation / Descriptive / Cross sectional study

Place and Duration of Study: This study was conducted at Islam Dental College Sialkot for a period of 8 months

Materials and Methods: Oral lesions can develop as a result of irritation due to intra oral orthodontic appliances but their prevalence is unknown

This study comprised of 200 subjects wearers of orthodontic appliances [age between 10 and 25 years]

The presence and types of intra oral mucosal lesions were determined by using different clinical indices

Results: Oral mucosal lesions such as desquamations, erosion, ulceration, and contusion were present in subjects with orthodontic appliances

Conclusion: Fixed orthodontic appliance treatment had a higher risk of soft tissue lesions in oral cavity

Thus gentle instrumentation, vigilant banding, bonding and manipulation of the appliances needed to keep away from traumatic lesions

The careful handling is important in patient's motivation, successful treatment planning and outcome

Comparison of adhesion and bond strength of gutta percha and polyurethane materials with root dentin in phosphate buffer saline solution

Objective:To find out the adhesion and bond strength of composites of guttapercha with 10% hydroxyapatite [HA] and polyurethane [10% and 20% HA] immersed in phosphate buffer saline [PBS] solution with root dentin

Materials and Methods:This descriptive cross-sectional study was carried out from June 2010 – August 2010 at the Department of Material Sciences, Queen Mary College of Engineering London, UK. Extracted human teeth were used for this study and in vitro root canal obturation was done. After filling the samples were immersed in Phosphate Buffer Saline [PBS] solution.Push out test and scanning electron microscopy [SEM] was done to find out the adhesion and bond strength of these materials

Results: Guttapercha had maximum bond strength,where as guttapercha with 10% hydroxyapatite had minimum bond strength compared to other bioactive materials used. Polyurethane composite with 20% HA was next to guttapercha in terms of its bond strength followed by polyurethane with 10% HA

Conclusion:Guttapercha obturating material proved to be the best obturating material but polyurethane [with 10% and 20% HA] also looked promising and it should be further tested and investigated for future use as choice of obturating material with enhanced properties