Evaluation of bone graft effect after modified alveolar bone grafting

ObjectiveTo estimate the bone graft effect after modified alveolar bone grafting(ABG).

MethodsThe clinical data of 44 patients with unilateral alveolar cleft were retrospectively analyzed.The patients were divided into the modified ABG approach group(group A, 22 cases) and conventional ABG group(group B, 22 cases), and followed up for 12 months.The successful rate of bone graft and recovery of bone volumen between two groups after operation were compared.

ResultsThe successful rate of operation in group A (82.8%) was higher than that in group B(50.0%) (P < 0.05).After 3, 6 and 12 month, the survival of graft in defect region in group A was higher than that in group B(P < 0.05).The survival of graft in defect region in two groups after 3 months were higher than that after 6 and 12 months(P < 0.01), and the difference of survival of graft in defect region bewteen 6 and 12 months in two groups were not statistically significant(P>0.05).

ConclusionsFor patients with unilateral alveolar cleft, the modified alveolar bone grafting can effectively improve the survival rate of bone graft, and the recovery of bone mass obviously increases after operation.The postoperative bone resorption mainly occurs in the first 6 months of operation, and is basically stable at 6 to 12 months.