Fig. 1
From: Use of 3D printing models for donor tooth extraction in autotransplantation cases
Preoperative CBCT and 3D printing model of donor tooth and the actual tooth in a ATT case. The CBCT showed the affected tooth (mandible second molar) had a residual crown and obvious tip shadow. The donor tooth(mandible third molar) had good shape for crown and double roots. The treatment plan was to transplant the mandible third molar to replace the mandible second molar; 3D printing model showed that the bending angle of distal buccal root of donor tooth was larger, and the actual tooth showed that the distal buccal root was fractured for about 1 mm