Unique Techniques Utilizing Rib Grafts for Mandibular Reconstruction in the Pediatric Population.

Abstract

Pediatric mandibular reconstruction requires a grafted segment of sufficient height and stability to support dental implant placement. Double barreling and mandibular distraction osteogenesis (MDO) after reconstruction are two techniques to achieve this, but they have only been reported with fibular grafts. Rib grafts not only have a lower donor site morbidity than fibular grafts, but they also provide adequate defect coverage in children. As such, we propose their use with either a double barrel technique or with MDO. Three pediatric patients underwent mandibular resection and reconstruction using rib grafting. One patient underwent single rib graft placement with subsequent vertical rib distraction. In the remaining two patients, a double-barreled rib technique was used, stacked horizontally in one patient and vertically in the other. From March 2018 to May 2019, three patients with an average age of 11 underwent resection of mandibular tumors or tumor-like lesions followed by immediate reconstruction with rib graft. Due to postoperative wound complications, the graft was completely removed in one patient. The remaining two patients had an uneventful recovery with dental implants planned for one and fully osseointegrated in the other. None of the patients experienced donor-site complications. This case series supports the utility and versatility of autogenous rib grafts as a reconstructive option in children. Not only is rib an excellent bone source with low donor site morbidity, but its height can be augmented through MDO or double barreling, facilitating the successful placement of implants and oral rehabilitation in pediatric patients.