Kumar Saurav, Verma Gaurav, Hassan Nadira, Shaikh Sana, Anand Bharti, Anjan Ravi
Department of Orthodontics and Dentofacial Orthopaedics, Mithila Minority Dental College and Hospital, Darbhanga, Bihar, India.
Associate Professor, Department of Dentistry, Narayan Medical College and Hospital Sasaram, Bihar, India.
J Pharm Bioallied Sci. 2021 Nov;13(Suppl 2):S1286-S1290. doi: 10.4103/jpbs.jpbs_106_21. Epub 2021 Nov 10.
The purpose of the study was to scientifically test maxillary canine retraction assisted by miniscrew implant with corticotomy-facilitated orthodontics.
Fifteen patients (six males, nine females) who had Class II division malocclusion with enhanced overjet were included in the study. Maxillary first premolars were surgical displaced along with retraction of maxillary. In the canine-premolar region, corticotomy was performed on one side of the maxillary arch; the other side served as the control region. Over a 4-month follow-up span, the following variables were examined: plaque index, tooth movement intensity, attachment degree, gingival regression, molar anchorage failure, gingival index, and scope of testing.
After 2 months, the canine retraction rate on the corticotomy side was more significant than on the control side by twice. The tooth movement rate steadily decreased to 1.6 times faster at the end of the 3 month and to 1.06 times faster at the end of the 4 month. No failure of molar anchorage occurred on either the controlled or nonoperated hand during canine retraction.
For people requiring orthodontic care with shortened treatment periods, corticotomy-facilitated orthodontics may be a viable treatment modality.
本研究的目的是科学地测试微螺钉种植体辅助皮质骨切开术促进正畸对上颌尖牙后移的作用。
本研究纳入了15例安氏II类1分类错牙合且覆盖加深的患者（6例男性，9例女性）。上颌第一前磨牙随上颌后移进行手术移位。在尖牙-前磨牙区域，在上颌牙弓的一侧进行皮质骨切开术；另一侧作为对照区域。在4个月的随访期内，检查了以下变量：菌斑指数、牙齿移动强度、附着程度、牙龈退缩、磨牙支抗失败、牙龈指数和测试范围。
2个月后，皮质骨切开术侧的尖牙后移率比对照侧高出两倍。在3个月末，牙齿移动速率稳步下降至快1.6倍，在4个月末快1.06倍。在尖牙后移过程中，对照侧或未手术侧均未发生磨牙支抗失败。
对于需要缩短治疗周期的正畸治疗患者，皮质骨切开术促进正畸可能是一种可行的治疗方式。
