Kharkar Viraj R, Kotrashetti S M
Department of Oral and Maxillofacial Surgery, Pravara Rural Dental College, Loni, India.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2010 May;109(5):687-93. doi: 10.1016/j.tripleo.2009.10.014. Epub 2010 Jan 22.
A recent innovative use of distraction osteogenesis technique in the field of orthodontic tooth movement is the application of the principle of distraction to move individual tooth segments rapidly, thus reducing orthodontic treatment time.
Twelve maxillary canine teeth were rapidly retracted using the concept of dentoalveolar distraction osteogenesis. They were evaluated for the time required to complete the retraction, canine tipping, anchorage loss, and root resorption using intraoral radiographs and lateral cephalograms. The vitality of the canine was also evaluated using an electric pulp tester.
Canines can be rapidly retracted by dentoalveolar distraction, and subsequently the total orthodontic treatment time can be reduced as described in this technique. The time taken is 12.5 +/- 0.50 days with a minimal amount of tipping and acceptable amount of anchorage loss. All the teeth were vital with no evidence of root resorption.
The concept of distraction osteogenesis for rapid orthodontic tooth movement is thought to be promising and feasible for clinical practice.
牵张成骨技术在正畸牙齿移动领域的一项最新创新应用是运用牵张原理快速移动单个牙段，从而缩短正畸治疗时间。
采用牙槽骨牵张成骨概念对12颗上颌尖牙进行快速内收。使用口腔内X光片和头颅侧位片评估完成内收所需时间、尖牙倾斜、支抗丧失及牙根吸收情况。还使用牙髓电活力测试仪评估尖牙的活力。
通过牙槽骨牵张可使尖牙快速内收，进而如该技术所述缩短正畸总治疗时间。所需时间为12.5±0.50天，倾斜量极小，支抗丧失量可接受。所有牙齿均有活力，无牙根吸收迹象。
牵张成骨用于快速正畸牙齿移动的概念在临床实践中被认为是有前景且可行的。
