Badiee Mohammadreza, Tehranchi Azita, Behnia Parsa, Khatibzadeh Karen
Dentofacial Deformities Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Preventive Dentistry Research Center, Research Institute of Dental Sciences, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Front Dent. 2021 Nov 1;18:38. doi: 10.18502/fid.v18i38.7607. eCollection 2021.
This study aimed to assess the efficacy of low-intensity pulsed ultrasound (LIPUS) for orthodontic pain control. This spilt-mouth randomized controlled clinical trial was performed on 44 mandibular first molars of 22 orthodontic patients at the Orthodontics Department of Shahid Beheshti Dental University. Elastomeric separators were placed at the mesial and distal of mandibular right and left first molars by separating pliers. Randomly, LIPUS was used at one side for 7 min and the same device with 0-degree intensity was used as sham for the other side on the facial skin. The same procedure was repeated after 24 h. Patients recorded their level of pain at 1, 6, and 24 h, and also on days 2 to 7 after, using a visual analog scale (VAS). The effect of type of treatment (P=0.019), time of assessment (P<0.000) and the interaction effect of type of treatment and time of assessment (P=0.055) on the pain score were all significant. The mean pain score in the LIPUS group was significantly lower than that in the control group at 24 h (P=0.002), 4 days (P=0.031) and 5 days (P=0.035). LIPUS can be safely used during orthodontic treatment for pain control since it is safe, non-invasive, low-cost, and easy to use.
本研究旨在评估低强度脉冲超声（LIPUS）对正畸疼痛的控制效果。这项裂嘴随机对照临床试验在沙希德·贝赫什提牙科大学正畸科的22名正畸患者的44颗下颌第一磨牙上进行。使用分离钳在下颌左右第一磨牙的近中及远中放置弹性分离器。随机地，在一侧使用LIPUS 7分钟，另一侧在面部皮肤上使用强度为0度的同一设备作为假对照。24小时后重复相同操作。患者使用视觉模拟量表（VAS）记录其在1、6和24小时以及之后第2至7天的疼痛程度。治疗类型（P = 0.019）、评估时间（P < 0.000）以及治疗类型与评估时间的交互作用（P = 0.055）对疼痛评分的影响均具有显著性。LIPUS组在24小时（P = 0.002）、4天（P = 0.031）和5天（P = 0.035）时的平均疼痛评分显著低于对照组。由于LIPUS安全、无创、低成本且易于使用，因此在正畸治疗期间可安全用于控制疼痛。
