Shaadouh Rashad I, Hajeer Mohammad Y, Alam Mohammad Khursheed, Jaber Samer T
Department of Orthodontics, Faculty of Dentistry, University of Damascus, Damascus, Syria.
Orthodontic Division, Department of Preventive Dentistry, College of Dentistry, Jouf University, Sakaka, Saudi Arabia.
Clin Exp Dent Res. 2025 Aug;11(4):e70188. doi: 10.1002/cre2.70188.
To evaluate external apical root resorption (EARR) and periodontal indices during en-masse retraction of maxillary anterior teeth stimulated with low-intensity electrical currents.
A two-arm randomized controlled trial.
Young adult patients who visited the Department of Orthodontics at Damascus University between November 2023 and March 2024 and met predefined inclusion criteria were randomly allocated into two groups using block randomization. The study included 34 patients, with 17 assigned to the electrically stimulated en-masse retraction (ESER) group and 17 to the conventional en-masse retraction (CER) group. The force for the en-masse retraction technique in both groups was 250 g per side. The force was applied through bilateral closed-coil nickel-titanium springs anchored to an orthodontic mini-screw on each side. In the ESER group, each upper anterior tooth was subjected to a continuous electrical stimulation of 15-20 µA for 5 h daily, utilizing an intraoral removable electrical stimulation device. EARR was assessed using digital panoramic radiographs. Four periodontal indices were also used to assess periodontal status. Blinding was confined to data analysis.
Thirty-four patients (26 females and 8 males) were analyzed with a mean age of 21.12 ± 2.41 years. At the end of the en-masse retraction phase, no significant difference in EARR was observed between the two groups (p > 0.05). The observed root resorption in the ESER and CER ranged between 0.27 and 0.64 and 0.32 and 0.71 mm, respectively. Also, insignificant differences were found in all periodontal indices studied at all measurement points between the two groups (p > 0.05).
Low-intensity electrical stimulation had no significant effect on root resorption during the en-masse retraction of the six upper anterior teeth. Both groups exhibited comparable slight root resorption without any significant difference between them. Additionally, low-intensity electrical stimulation did not affect the periodontal status during en-masse retraction.
Clinical Trials database (NCT06873490).
评估在低强度电流刺激下上颌前牙整体后移过程中的根尖外吸收（EARR）和牙周指数。
双臂随机对照试验。
2023年11月至2024年3月期间就诊于大马士革大学正畸科且符合预定纳入标准的年轻成年患者，采用区组随机化方法随机分为两组。该研究包括34名患者，其中17名被分配到电刺激整体后移（ESER）组，17名被分配到传统整体后移（CER）组。两组整体后移技术的力均为每侧250克。力通过双侧闭合圈镍钛弹簧施加，弹簧固定在每侧的正畸微螺钉上。在ESER组中，使用口腔内可摘电刺激装置，每天对每颗上前牙进行15 - 20微安的连续电刺激5小时。使用数字化全景X线片评估EARR。还使用四个牙周指数评估牙周状况。盲法仅限于数据分析。
对34名患者（26名女性和8名男性）进行了分析，平均年龄为21.12 ± 2.41岁。在整体后移阶段结束时，两组之间在EARR方面未观察到显著差异（p > 0.05）。ESER组和CER组观察到的牙根吸收分别在0.27至0.64毫米和0.32至0.71毫米之间。此外，在两组所有测量点的所有研究牙周指数中均未发现显著差异（p > 0.05）。
在六颗上前牙整体后移过程中，低强度电刺激对牙根吸收没有显著影响。两组均表现出相当程度的轻微牙根吸收，且两组之间无任何显著差异。此外，低强度电刺激在整体后移过程中不影响牙周状况。
临床试验数据库（NCT06873490）。
