Secondary Alveolar Bone Grafting Using Milled Cranial Bone Graft: A Retrospective Study of a Consecutive Series of 100 Patients

Abstract

Objective

The purpose of this study was to evaluate the outcome of secondary bone grafting of alveolar clefts using milled cranial bone graft.

Patients

The study included a consecutive series of 100 patients who were operated on between 1986 and 1995 by a single senior surgeon.

Measurements

The patients were divided into four groups; (1) unilateral alveolar cleft or (2) bilateral alveolar cleft, (3) before eruption of the canine teeth or (4) after eruption. Follow-up ranged from a minimum of 12 months to 10 years, and evaluation included a physical examination, medical photography, orthodontic reports, and a panorex X-ray and/or a three-dimensional computed tomography scan of the maxilla produced using Denta-scan software. Patient outcomes were judged to be good, acceptable, or poor. Patients who developed any fistula or required regrafting were defined as poor outcomes.

Results

The combined good and acceptable outcomes represented 83% of the entire consecutive series. These two groups were defined as successful outcomes. In patients with unilateral and bilateral clefts who were under 12 years old, the success rate was 90% and 88%, respectively. In patients grafted following full canine eruption (>12 years old), success rate decreased to 83% in patients with unilateral and 66% in bilateral clefts, respectively.

Conclusions

Our results support the use of milled cranial bone graft, which produces a stable closure of the alveolar cleft with good contour and support for adjacent tooth eruption. Our data further support the conclusion by others that outcomes of early secondary grafting are superior to delayed grafting. The experience presented here, including the success rate, ease of harvesting, and minimal morbidity, makes the cranium our preferred donor site for alveolar cleft grafting.

Keywords

alveolar cleft secondary bone grafting

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