Evaluation of using ultrasound welding process of biodegradable plates for fixation of pediatric mandibular fractures

Purpose: This study was planned to evaluate, both clinically and radiologically, the efficacy of using ultrasound based welding process by (Sonic weld Rx) for fixation of biodegradableplates in pediatric mandibular fractures. Patients and methods: This study comprised 8 patients, theirages ranged from (2) to (10) years with mandibular fractures treated with open reduction and internal fixation using poly-D and L-lactic acid (PDLLA) plates by SonicWeld Rx through an intra-oral approach. Preopertivelly patients were examined clinically by inspection and palpation both extraorally and intraorally. Radiographic examination via orthopantomograph and computed tomography (CT). Postopertivelly patients were evaluated clinically immediately, at two weeks, and at one, three and six months. Radiographically by Panoramic radiographs immediately and at one, three and six months and Quantitative computed tomography (CT) after one and three months. Results: The results revealed primary wound healing in six patients with no signs of infection or dehiscence and two patients exhibited scaring in the repaired wound, proper occlusion, postopertively except one patient had minor occlusal discrepancies corrected by elastics and all cases showed stability of the fractured segments. Radiographic examination for all patients at the different follow up periods statistically revealed significant bone healing. Conclusion: We can conclude that Ultrasound based welding process by (Sonic weld Rx) for fixation of PLDLA plates and pins was effective in pediatric mandibular fractures.