Calculation of bone graft volume using 3D reconstruction system.

OBJECTIVES To obtain bone bioreplicas for determining precisely the amount of biomaterial required for bone regeneration procedure. STUDY DESIGN A case-control comparison with a total sample size of 20 cases, 10 control and 10 test samples. Bioreplicas were generated from helical CAT scans with 0.5 mm slices, without 3D reconstruction or image filters. Bone defects in premolar and molar areas were treated with titanium mesh and xenograft (MP3) combined with resorbable carriers. Time taken to carry out procedures with and without the use of bioreplicas (in minutes), discrepancies between the grafts performed with and without bioreplicas and bone defects (mm), and postoperative complications were registered. RESULTS No significant differences were recorded for measurements of width and length of bone defect between patient bone and the biological models. CONCLUSIONS The use of bioreplicas obtained by rapid prototyping is effective in treatment planning.