BACKGROUND Discision method may provide an alternative to the piezocision approach in accelerated orthodontic treatment. The purpose of this study was to investigate the efficacy of discision on accelerated orthodontic tooth movement in comparison to the piezocision method in moderate crowding Angle Class I malocclusions. METHODS Thirty-five female individuals were included in this clinical study. The participants were classified into three groups as conventional fixed non-extraction orthodontic treatment only (OT, n = 14), piezocision in addition to fixed non-extraction orthodontic treatment (PG, n = 9), and discision in addition to fixed non-extraction orthodontic treatment (DG, n = 12). The piezocisions and discisions were performed 1 week after placement of bonding brackets. The patients were seen at 2-3 week-intervals. Initial Little's irregularity index scores were recorded from dental casts. Periodontal parameters were measured initially, after the 1-month orthodontic treatment. Probing pocket depth, bleeding on probing, plaque index, and gingival index were recorded. Visual analog scale (VAS) was performed over the first month at different times following the bracket bonding for pain assessment. The total orthodontic treatment duration was noted. RESULTS The duration of orthodontic treatment was statistically decreased in PG and DG compared to OT (P = 0.003). There was no statistical difference between PG and DG in orthodontic treatment duration (P > 0.05). There was no statistical difference between the two experimental groups in terms of VAS and periodontal parameter values (P > 0.05). CONCLUSIONS This is the first clinical orthodontic study to assess the effect of discision on the rate of orthodontic tooth movement. Discision is comparable to piezocision in terms of tooth movement acceleration, pain level, and periodontal status. The discision seems to be effective in reducing the time of orthodontic treatment.

中文翻译：

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正畸治疗中压切和切开方法的比较。

背景技术在加速的正畸治疗中，切开方法可以提供对压切切开术方法的替代。这项研究的目的是研究在中等拥挤角度I类错牙合畸形中，压切法与正切法相比，矫正对加速正畸牙齿运动的功效。方法该临床研究包括35名女性。参与者分为三组，分别为常规固定非拔牙正畸治疗（OT，n = 14），除固定非拔牙正畸治疗之外的压切术（PG，n = 9）和除固定非拔牙正畸治疗外的辨别术拔牙正畸治疗（DG，n = 12）。压结和剥离在放置粘结支架后1周进行。每隔2-3周观察一次患者。最初的小' 从牙模记录不规则指数得分。正畸治疗1个月后，首先测量牙周参数。记录探查袋深度，探查出血，菌斑指数和牙龈指数。支架粘结后第一个月的不同时间进行视觉模拟量表（VAS）评估疼痛。记录了总的正畸治疗时间。结果与OT相比，PG和DG的正畸治疗时间有统计学意义的减少（P = 0.003）。正畸治疗时PG和DG之间无统计学差异（P> 0.05）。在VAS和牙周参数值方面，两个实验组之间无统计学差异（P> 0.05）。结论这是第一项评估正畸对正畸牙齿移动速度影响的临床正畸研究。就牙齿运动的加速，疼痛程度和牙周状态而言，分切术与压切术相当。该发现似乎在减少正畸治疗时间方面是有效的。