PAOO Improves Buccal Bone Thickness and Reduces Dehiscences — A CBCT Study

Objective: To assess how does periodontally accelerated osteogenic orthodontics (PAOO) affect alveolar bone thickness. Methods: Retrospective cone-beam CT (CBCT) review of central and lateral incisors compared 15 arches treated with PAOO with 15 age- and sex-matched controls not treated with PAOO. Measurements using sagittal section included vertical distance from the bone crest to the cemento-enamel junction (CEJ) and radicular bone thickness 3, 6, 9, and 12 mm from CEJ. Using cross-sections, fenestrations and dehiscences were identified and measured on buccal root surfaces. (Significance set at P <0.05). Results: The PAOO group had a significant reduction in incidence of fenestrations and dehiscence, and also loss in lingual crestal bone height. An important finding is that within the PAOO group, 10 of 15 were augmented on the compression side of tooth movement. Of these, the PAOO group showed a significant increase in the buccal radicular bone at 3, 6, and 9 mm from the CEJ ver more...