Characteristics of CBCT versus panoramic signs of the surrounding bone of molar root protrusions into the maxillary sinus.

The study aimed to (a) investigate the amount and characteristics of the surrounding bone of protruded molar roots into the maxillary sinus using cone-beam computed tomography (CBCT) and (b) assess the correlation between the amount of bone with panoramic high-risk signs. Radiographs of 408 roots protruding beyond the sinus floor were evaluated. Axial CBCT images were used to investigate then classify eight characteristics of surrounding bone: no bone; bone < half the root girth in the proximal or buccal-palatal aspect; bone covering half the root girth in the proximal or buccal-palatal aspect; bone > half the root girth in the proximal or buccal-palatal aspect; and, complete bone.

Proximity of mandibular third molar root(s) to surrounding cortical bone: cone beam computed tomography (CBCT) and panoramic findings.

Purpose: We evaluated the relationship between mandibular third molar roots (M3Ms) and surrounding cortical bone using cone beam computed tomography (CBCT) and panoramic findings. We studied (a) the location of mandibular third molar roots in relation with cortical bone in terms of contact, penetration, and perforation on CBCT; (b) the relationship between characteristics of a root in panoramic findings and the CBCT image (entire and segmentally); and (c) the relationship of the root plane in panoramic findings vs. CBCT.

Pre- and peri-operative factors influence autogenous tooth transplantation healing in insufficient bone sites.

Background: The amount of bone remaining at the transplant site for autogenous tooth transplantation can facilitate successful healing. Therefore, this retrospective study evaluated the factors influencing the healing of 50 successful autogenous tooth transplantations with insufficient bone support at the transplanted site without a bone graft.

Methods: The factors were classified as pre- and peri-operative factors, and the healing outcomes were clinical and radiographic observations.

Alveolar bone changes in autogenous tooth transplantation.

Objective: To assess the alveolar bone formation after autogenous tooth transplantation by conventional radiographic method and digital subtraction radiography.

Study Design: This retrospective study was done in 54 of 136 patients who received the third molar tooth transplantation and attended the first week, as well as the 1-, 3-, 6-, 9-, and 12-month follow-up. Postoperative periapical radiographs were subsequently evaluated by direct visual interpretation and digital subtraction radiography.

Response of autotransplanted teeth to electric pulp testing.

Objective: The purpose of this retrospective study was to assess the results of third molar autotransplantation by using electric pulp testing (EPT) and to determine the correlation of EPT response and bone formation.

Study Design: Fourteen patients with 22 transplanted teeth were studied. The patients had received autotransplantation of third molars and regularly came for follow-up on the third, sixth, ninth, and twelfth months.