Long-term dentoskeletal changes of class II growing patients' treatment with the propulseur universal light appliance. A prospective controlled study.

Q3 Medicine

Minerva stomatologica Pub Date : 2020-04-01 Epub Date: 2020-03-16 DOI:10.23736/S0026-4970.19.04283-3

Marco Migliorati, Sara Drago, Chiara Calzolari, Fabio Gallo, Domenico Dalessandri, Alessandro Orsini, Armando Silvestrini-Biavati

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Abstract

Background: Class II is one of the most common malocclusions. The prevailing aspect in Class II patients is a mandibular deficiency. Various removable and fixed functional therapies are used in order to enhance the mandibular growth or position. The aim of this prospectively controlled study was to evaluate long-term dentoskeletal changes obtained by a functional appliance for Class II.

Methods: Prospective controlled study, based on a sample size calculation. 26 Class II Division 1 patients (11.8±1.5 years) were consecutively treated with the propulseur universal light (PUL) appliance and a multi bracket appliance (PG), they were compared to a sample of 26 Class II untreated patients (11.5±0.8 years) (CG). Lateral cephalograms were taken before and after the PUL therapy, and after multibracket treatment. Interaction analysis was carried out to test whether the PUL parameters in treatment groups were different according to the acquisition times, using the Linear Mixed-Effects Model.

Results: Significant ANB, Overjet and WITS differences existed in treatment groups according to the time. In particular, comparing to T1 vs. T0, the relative difference (RD) means in the control group were -0.34, -0.31 and 0.17 for ANB, Overjet and WITS, respectively. The corresponding RD means in the treated group PG were -1.58, -4.27 and -2.38. Comparing to T2 vs. T0, the RD means in the control group were -0.36, -0.51 and 0.63 for ANB, Overjet and WITS, respectively. While the corresponding RD means in the treated group were -2.08, -5.12 and -2.50.

Conclusions: The PUL appliance successfully corrected class II malocclusion. The long term correction was mainly due to dentoalveolar effects: therapy success was 91% for overjet correction and 76% for ANB correction. During the post functional appliance period, overjet was stable in 77% of the treated subjects, and ANB in 74% of the treated subjects.

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propulseur万能灯治疗II类生长患者牙骨骼的长期变化。一项前瞻性对照研究。

背景:II类是最常见的错颌之一。II类患者的主要特征是下颌缺陷。各种可移动和固定的功能疗法被用来增强下颌骨的生长或位置。这项前瞻性对照研究的目的是评估II类功能性矫治器获得的长期牙骨骼变化。方法:基于样本量计算的前瞻性对照研究。26例II类1节患者(11.8±1.5年)连续使用propulseur universal light (PUL)矫治器和multi -托架矫治器(PG)，并与26例II类未治疗患者(11.5±0.8年)(CG)进行比较。在PUL治疗前后和多支架治疗后分别拍摄侧位脑电图。采用线性混合效应模型(Linear Mixed-Effects Model)进行交互分析，检验各组PUL参数是否因采集次数不同而不同。结果:治疗组间ANB、Overjet、WITS按时间有显著差异。特别是，与T1相比，对照组ANB、Overjet和WITS的相对差异(RD)均值分别为-0.34、-0.31和0.17。治疗组PG对应的RD均值分别为-1.58、-4.27和-2.38。与T2与T0相比，对照组ANB、Overjet和WITS的RD均值分别为-0.36、-0.51和0.63。治疗组相应的RD均值分别为-2.08、-5.12和-2.50。结论:PUL矫治器成功矫正了ⅱ类错颌。长期矫正主要是由于牙槽效应:覆盖矫正的治疗成功率为91%，ANB矫正的治疗成功率为76%。在功能矫治器后，77%的治疗对象的过度喷流是稳定的，74%的治疗对象的ANB是稳定的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Minerva stomatologica DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

1.50

自引率

0.00%

发文量

期刊介绍： The journal Minerva Stomatologica publishes scientific papers on dentistry and maxillo-facial surgery. Manuscripts may be submitted in the form of editorials, original articles, review articles, case reports, therapeutical notes, special articles and letters to the Editor. Manuscripts are expected to comply with the instructions to authors which conform to the Uniform Requirements for Manuscripts Submitted to Biomedical Editors by the International Committee of Medical Journal Editors (www.icmje.org). Articles not conforming to international standards will not be considered for acceptance.