@article{10.4103/2321-1407.177961, title = {Root resorption following periodontally accelerated osteogenic orthodontics}, author = {Donald J., Ferguson and Machado, Irelia and Wilcko, M. Thomas and Wilcko, William M.}, abstract = { Background Literature evidence suggests that root resorption, an adverse side effect of orthodontic therapy, may be decreased under conditions of alveolar osteopenia, a condition characterized by diminished bone density and created secondary to alveolar corticotomy (Cort) surgery. Purpose To compare root resorption of the maxillary central incisors following nonextraction orthodontic therapy with and without Cort surgery. Materials and Methods The sample comprised two groups, with and without Cort and was matched by age and gender: Cort-facilitated nonextraction orthodontics with 27 subjects, 53 central incisors of mean age 24.8 ± 10.2 years, and conventional (Conv) nonextraction orthodontics with 27 subjects, 54 incisors with mean age of 19.6 ± 8.8 years. All periapical radiographs were taken with the paralleling technique; total tooth lengths of the right and left central incisors were measured by projecting and enlarging the periapical radiographs exactly 8 times. Results \textit{t}-tests revealed a significant decrease in treatment time in the Cort group (6.3 ± 8.0 vs. 17.4 ± 20.2 months,\textit{P} = 0.000). Pretreatment root lengths were not significantly different (\textit{P} = 0.11), but Conv had significantly shorter roots at posttreatment when compared with Cort (\textit{P} = 0.03). Significant root resorption (\textit{P} < 0.01) occurred in both Cort (0.3 mm) and Conv (0.7 mm), but the increment of change was significantly greater in Conv (\textit{P} < 0.03). The variable SNA increased significantly in the Cort (\textit{P} = 0.001) group and decreased significantly in the Conv group (\textit{P} < 0.001). Conclusions Based on the conditions of this study, it may be concluded that Cort-facilitated nonextraction orthodontic therapy results in less root resorption and enhanced alveolar support within a significantly reduced clinical service delivery time frame. Rapid orthodontic treatment and reduced apical root resorption are probably due to the transient osteopenia induced by the Cort surgery and inspired by regional acceleratory phenomenon. }, volume = 6, journal = {APOS Trends in Orthodontics}, issn = {2321-4600}, issn = {2321-1407}, url = {https://doi.org/10.4103/2321-1407.177961}, doi = {10.4103/2321-1407.177961} }