مرکز منطقه ای اطلاع رساني علوم و فناوري - COMPUTED TOMOGRAPHIC EVALUATION OF SECONDARYALVEOLAR BONE GRAFTING IN PATIENTSWITH CLEFT LIPAND PALATE

Abstract :

Objective: The aim of this retrospective study was to assess the long-term outcome of secondary alveolar bone grafting (SABG) in patients with cleft lip and palate (CLP) using cone beam computed tomography scans Material and Method: The computed tomography scans of 35 patients with CLP (12 BCLP, 23 UCLP) were evaluated. Alveolar bone grafting was performed by different surgeons. The mean age at the time of bone grafting was 12.3 years (range, 7 to 37 years) and the mean follow-up period was 2.8 years (range, 1 to 5.6 years). Evaluation of SBAG was performed on horizontal CT slices and on the 3D reconstruction of the images by assigning score of I to IV. %50 or more bone fill within the cleft area (grade I and II) was accepted as a success. Three horizontal slices were selected from graft area between the root surfaces of the teeth mesial and distal to the cleft: slice 1, including cemento-enamel junction on the adjacent teeth; slice 2, between slices 1 and 3; slice 3, including the root apex on the adjacent teet Results:Within the 47 graft sites, 31 (% 66) were evaluated as a successful. It was also found that the success rate reduce to % 33 when grafting perform after the eruption of the cleft –associated permanent canines. Conclusion: In the evaluated patients the success rate of SABG was lower than those of the literature and thus affects negatively the orthodontic treatment goals.