In Vivo Comparison of the Efficiency of En-Masse Retraction Using Temporary Anchorage Devices With and Without Orthodontic Appliances on the Posterior Teeth.

IF 0.8 Q4 DENTISTRY, ORAL SURGERY & MEDICINE Turkish Journal of Orthodontics Pub Date : 2022-06-01 DOI:10.5152/TurkJOrthod.2022.20149
Sanjam Oswal, Sonali V Deshmukh, Sanket S Agarkar, Sachin Durkar, Chaitra Mastud, Jayesh S Rahalkar
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Abstract

Objective: To compare the effectiveness of en-masse retraction of maxillary anterior teeth using temporary anchorage devices with and without orthodontic appliances on the posterior teeth.

Methods: In the study, 20 participants (18.25 ± 4.07 years) meeting the inclusion criteria were randomly divided into 2 groups using the sequentially numbered opaque sealed envelopes method. In group I (control group, n = 10), en-masse retraction was carried out with conventional high hooks soldered to the retraction wire and posterior teeth were included. In group II (experimental group, n = 10), the en-masse retraction was carried out without an orthodontic appliance on posterior teeth and a modified retraction wire was incorporated. In both groups, mini-implants were placed bilaterally between the maxillary second premolar and maxillary first molar, and a retraction force of 6 ounces (180 g) was applied using power chains. Lateral cephalograms and study models were taken before retraction and 4 months after retraction. All statistical analyses were performed with Statistical Package for the Social Sciences soft- ware with a statistically significant level of 5%. We used unpaired t-tests for the comparison, and the error of the method was assessed using intraclass correlation coefficients and the Bland-Altman method.

Results: The maxillary incisor apex retraction, change in maxillary incisor in the vertical plane, and its inclination showed statistically significant differences (P < .05). The rate of retraction was significantly greater in the experimental group when evaluated clinically and in the study models (P < .05).

Conclusion: The rate/amount of retraction evaluated clinically and in the study models was significantly faster/greater when the pos- terior teeth were not included during anterior retraction. Also, a greater amount of bodily retraction of anterior teeth was achieved.

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带正畸矫治器和不带正畸矫治器的后牙临时支抗大规模内缩效果的体内比较。
目的:比较后牙带正畸矫治器和不带正畸矫治器的临时支抗对上颌前牙整体后缩的效果。方法:选取符合入选标准的20例(18.25±4.07岁)患者,采用顺序编号的不透明密封信封法随机分为2组。第一组(对照组,n = 10)采用常规高钩焊接在牵拔丝上进行大规模牵拔,包括后牙。第二组(试验组,n = 10),后牙不使用正畸矫治器,采用改良后的牵开丝进行大规模牵开。在两组中,微型种植体放置在上颌第二前磨牙和上颌第一磨牙之间,并使用动力链施加6盎司(180 g)的回缩力。牵开前和牵开后4个月分别拍摄侧位脑电图和研究模型。所有统计分析均使用社会科学统计软件包软件进行,统计显著性水平为5%。我们使用非配对t检验进行比较,并使用类内相关系数和Bland-Altman方法评估方法的误差。结果:上颌切牙尖牙后缩回、上颌切牙垂直平面变化及其倾斜度差异均有统计学意义(P < 0.05)。在临床和研究模型中,实验组的牵入率明显高于对照组(P < 0.05)。结论:不包括后牙时,临床和研究模型的前缩速度/后缩量均明显更快/更大。同时,前牙的身体内收的幅度也更大。
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来源期刊
Turkish Journal of Orthodontics
Turkish Journal of Orthodontics Dentistry-Orthodontics
CiteScore
2.10
自引率
9.10%
发文量
34
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