Retrospective Analysis of Mandibular Segmental Defects Treated with Non-Vascularized Bone Grafts and Their Outcomes

Abstract

In recent years, there has been a shift toward reconstructing mandibular segmental defects using vascularized bone grafts (VBG), which are now becoming the workhorse of mandibular reconstruction. VBG provide reconstruction of large and composite defects, work well in irradiated fields, and allow for immediate reconstruction. Despite the advantages mentioned, it is important to note that VBG necessitate lengthy admission, require specialized training and equipment, and in many cases, the bulk of bone provided is suboptimal either in contour, esthetics, or for implant placement. Non-vascularized bone grafts (NVBG), on the other hand, lack these drawbacks as the surgery tends to be less technique-sensitive with a shorter admission time and provide a larger bulk of bone than the VBG. Nevertheless, many surgeons avoid NVBG use for defects over 6cm in length as studies including those by Pogrel et al.1 and Foster et al.2 showed increase in failure rates of NVBG in larger defects.