Department of Orthodontics and Dentofacial Orthopedics, Dental College and Hospital, Bharati Vidyapeeth Deemed To Be University, 411043, Pune, Maharashtra, India.
J Orofac Orthop. 2024 May;85(3):189-198. doi: 10.1007/s00056-022-00420-8. Epub 2022 Aug 26.
To evaluate the effect of micro-osteoperforations (MOPs) on the rate of orthodontic tooth movement (OTM) during en masse anterior retraction.
Twenty patients were randomly allocated into experimental and control group of 10 each. In the control group, en masse retraction was performed with sliding mechanics with a coil spring. In the experimental group after alignment and levelling, MOPs were performed mesially and distally to all six anterior teeth in the interdental cortical region on the labial aspect of both arches. MOPs were performed at the beginning of space closure (T) and 1 month after beginning of space closure (T). En masse retraction was performed with sliding mechanics with a coil spring. Measurements were recorded on digital models made from scanned plaster casts at the beginning of space closure (T) and monthly at each follow-up visit for the next 4 months (T, T, T, T). The monthly rate of OTM, the overall rate of OTM, and the difference between OTM in the MOP period (T-T) and post-MOP (T-T) period in the experimental and control group were evaluated. A visual analogue scale (VAS) was used to evaluate patients' pain experience.
The overall rate of OTM was significantly greater in the experimental group for both arches in the MOP period (T-T) and also in the post-MOP period (T-T) as compared to the control group. Within the experimental group, the rate of OTM in the MOP period was significantly greater than in the post-MOP period, which in turn was greater than that of the control group. The patients reported only mild discomfort for 24 h after performing the MOPs, which then gradually decreased.
The use of MOPs is effective in increasing the rate of en masse tooth retraction in both the maxillary and the mandibular arch. The rate of tooth movement was greater even in the post-MOP period as compared to the control group.
评估微骨穿孔（MOP）在前牙整体后移中对正畸牙齿移动（OTM）速度的影响。
将 20 名患者随机分为实验组和对照组，每组 10 名。在对照组中，使用螺旋弹簧滑动机制进行整体后移。在实验组中，在排齐整平后，在两个弓的唇侧牙槽皮质区的所有六颗前牙的近中和远中进行 MOP。在开始关闭间隙时（T）和开始关闭间隙后 1 个月（T）进行 MOP。使用螺旋弹簧滑动机制进行整体后移。在开始关闭间隙时（T）和随后的 4 个月每月随访时（T、T、T、T），从扫描石膏模型上记录测量值。在实验组和对照组中，评估了 MOP 期间（T-T）和 MOP 后（T-T）OTM 的每月速度、整体 OTM 速度以及 OTM 差异。使用视觉模拟评分（VAS）评估患者的疼痛体验。
在 MOP 期间（T-T）和 MOP 后（T-T），实验组的整体 OTM 速度在两个弓上均明显大于对照组。在实验组中，MOP 期间的 OTM 速度明显大于 MOP 后期间，而 MOP 后期间的 OTM 速度又大于对照组。患者在进行 MOP 后 24 小时内仅报告轻度不适，然后逐渐减轻。
MOP 的使用可有效增加上颌和下颌弓的整体牙齿后移速度。与对照组相比，即使在 MOP 后期间，牙齿移动的速度也更大。
