en ارتودنسی Orthodontics پژوهشي Research <p> <strong>Objective</strong>: To evaluate factors (root proximity and cortical bone thickness) affecting the success rate of orthodontic micro-implants (OMIs) using cone-beam computed tomography (CBCT) images. </p><p> <strong>Materials and Methods:</strong> We examined 172 OMIs (1.2–1.3 mm in diameter, 8 mm in length) implanted into the maxillary buccal alveolar bone of 94 patients (33 men, 61 women) with malocclusion. Root proximity and cortical bone thickness were measured, and the correlations between these measurements and OMI success rates were evaluated. </p><p> <strong>Results:</strong> The overall success rate was 90.7% (156/172). The success rate increased as the distance between the root surface and OMI increased, showing a highly significant statistical correlation (P < .05). As the cortical bone thickness increased, the success rate increased, showing a slight, nonsignificant correlation (P > .05). Thus, the success rate of OMIs was affected more significantly by root proximity than cortical bone thickness.</p><p> <strong> Conclusions:</strong> When inserting OMIs, increasing the distance from the OMI to the root surface will significantly improve success rates. </p><hr><p></p><p> <strong>Source: </strong>Angle Orthodontists </p><p><a href="http://www.angle.org/doi/abs/10.2319/091311-593.1" target="_blank"><font color="#0000ff"> Full Text</font></a></p> Root proximity, Cortical bone thickness, CBCT, Success rate, Orthodontic micro-implant (OMI) 0 0 http://idai.ir/browse.php?a_code=A-10-32-783&slc_lang=en&sid=1 Kyung-Inn Min 10031947532846003443 10031947532846003443 No Department of Orthodontics, School of Dentistry, University of Wonkwang, Iksan, South Korea Sang-Cheol Kim 10031947532846003444 10031947532846003444 No Department of Orthodontics, School of Dentistry, University of Wonkwang, Wonkwang Dental Research Institute, Iksan, South Korea Kyung-Hwa Kang 10031947532846003445 10031947532846003445 No Department of Orthodontics, School of Dentistry, University of Wonkwang, Wonkwang Dental Research Institute, Iksan, South Korea Jin-Hyoung Cho 10031947532846003446 10031947532846003446 No Department of Orthodontics, School of Dentistry, University of Wonkwang, Wonkwang Dental Research Institute, Iksan, South Korea Eon-Hwa Lee 10031947532846003447 10031947532846003447 No Department of Orthodontics, School of Dentistry, University of Wonkwang, Wonkwang Dental Research Institute, Iksan, South Korea Na-Young Chang 10031947532846003448 10031947532846003448 No Department of Orthodontics, School of Dentistry, University of Wonkwang, Wonkwang Dental Research Institute, Iksan, South Korea Jong-Moon Chae jongmoon@wonkwang.ac.kr 10031947532846003449 10031947532846003449 Yes Department of Orthodontics, School of Dentistry, University of Wonkwang, Wonkwang Dental Research Institute, Iksan, Wonkwang Bone Regeneration Research Institute, The Korean Orthodontic Research Institute Inc, Daejeon, South Korea