Development of Resorb-able Nano Composite Films for Orthodontic Applications

First generation membranes developed were non-resorbable and required a second surgical procedure for their removal. In order to overcome this obstacle biodegradable, resorb-able composite films were developed which may also assist in bone healing. In this paper, composite films comprising varying amounts of nano hydroxyapatite (0.5-30%) in chitosan (biopolymer) matrix were prepared by solvent casting method. Composite films were further characterized and mechanical properties were evaluated. Results showed increased strength and stability until 10-wt% HA beyond which properties declined. Immersion of composite films in SBF solution confirmed their bioactivity. This study concludes composite films with 10-wt% HA as a potential candidate for barrier films in the field of orthopedics and dentistry.