Are Cellular Bone Matrix Allografts a Viable Option for Mandibular Tissue Engineering and Reconstruction?

Area of Science:

• Maxillofacial Surgery
• Biomaterials Science
• Regenerative Medicine

Background:

• Traditional mandibular reconstruction often uses autografts.
• Allografts and tissue engineering offer alternative solutions for bone reconstruction.

Purpose of the Study:

• To evaluate the success of cellular bone matrix (CBM) allografts for mandibular tissue engineering and reconstruction.
• To assess the efficacy of CBM in restoring mandibular structure and function.

Main Methods:

• A retrospective cohort study analyzed 38 subjects treated with CBM between 2019 and 2023.
• Predictor variables included demographics, medical history (penicillin allergy, diabetes mellitus, tobacco use), etiology, resection characteristics, and use of adjunctive autografts.
• Graft success was defined by bony union, defect fill on radiographs, and mandibular stability at 3 months post-operation.

Main Results:

• Overall graft success was 73.7% (28 out of 38 subjects).
• Significantly lower success rates were observed in patients with a history of penicillin allergy (P = .008) or diabetes mellitus (P = .03).

Conclusions:

• Cellular bone matrix allografts represent a viable alternative for mandibular reconstruction.
• Clinicians should consider penicillin allergy status and manage diabetes mellitus to optimize CBM allograft outcomes.
• This study represents the largest case series on CBM-based mandibular reconstruction in the current literature.