@article { author = {Johari, M‪asoumeh and Esmaeili, Farzad and Saeedi vahdat, Arman and Naghinejad Ahmadi, S.}, title = {Relationship of bone and soft tissue thickness with age and gender for orthodontic mini-implant placement by CBCT}, journal = {Iranian Journal of Orthodontics}, volume = {7}, number = {3}, pages = {38-43}, year = {2012}, publisher = {Iranian Association of Orthodontists}, issn = {1735-5087}, eissn = {2383-3491}, doi = {10.22034/ijo.2012.247438}, abstract = {Background and aim: The aim of the present study was to measure the thicknesses of bone and soft issues in the mid palatal area at certain points for the placement of orthodontic mini-implants using CBCT and evaluate their relationships with age and gender.Materials and methods: A total of 161 subjects were evaluated in the present study, consisting of males (31.9%) with a mean age of 41.46±13.88 years and females (60.9%) with a mean age of 38.47±11.66 years. In all the samples 20 points were evaluated. First, the incisive foramen was located. Then para-coronal cross-sections were prepared at 4-, 8-, 16- and 24-mm distances from the posterior wall of the incisive foramen; in addition, on each cross-section, the mid-sagittal and para-sagittal areas were determined at 3- and 6-mm intervals bilaterally (5 points on the whole). The soft tissue and bone thickness were measured at these points. Results: The soft tissue thicknesses were significantly different at all the 20 sample points between males and females (P<0.05). In other words, at all the points the soft tissue thicknesses were significantly greater in males compared to females. In some areas there was a positive relationship between age and soft tissue thickness (P<0.01), i.e. the soft tissuethickness increased with age. In addition, in the majority of points the overall bone thickness was significantly higher in males compared to that in females; however, in the majority of points, no positive relationship was found between age and bone thickness.. Conclusion: Age was not a determining factor for bone thickness, while where was a stronger relationship between soft tissue thickness and age. In addition, the most appropriate locations for the placement of orthodontic mini-implants were paramedian area at 3- and 6-mm distances from the suture, 4 mm posterior to the incisive foramen. }, keywords = {Cone beam CT,Mini implant,Anchorage,Mid palatal}, url = {https://www.ijorth.com/article_247438.html}, eprint = {https://www.ijorth.com/article_247438_5d887a221fc3af3899e52e0502aebe61.pdf} }