Treatment effects of mandibular anterior position training versus a fixed Class II corrector in growing patients with skeletal Class II malocclusion

IF 0.5 Q4 DENTISTRY, ORAL SURGERY & MEDICINE
Khitparat Kamoltham, Chairat Charoemratrote
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引用次数: 5

Abstract

Purpose

To compare treatment effects of Class II elastics and anterior mandibular position training against fixed Class II corrector (PowerScope™) during the correction of skeletal Class II malocclusion with fixed appliance in growing patients.

Materials and methods

Thirty-six growing patients with skeletal Class II malocclusion with a retruded pogonion position were randomly allocated to the Class II elastics or PowerScope™ groups. Preadjusted edgewise fixed appliances were used in both treatment groups. Skeletal, dental and profile changes were compared using lateral cephalograms taken before (T0), after initial alignment (T1) and after Class I obtained (T2) for 16/18 patients in the Class II elastics group and 15/18 patients in the PowerScope™ group.

Results

The duration of treatment was significantly longer for the Class II elastics group than PowerScope™ group. In terms of skeletal changes, Class II elastics increased mandibular length, midfacial length and mandibular plane angle significantly more than the PowerScope™. In terms of dental changes, Class II elastics increased dental height significantly more than the PowerScope™.

Conclusions

Both treatment modalities reduced severity of Class II malocclusion and decreased profile convexity. Class II elastics with anterior mandibular position training increased mandibular length more but required longer treatment duration. The PowerScope™ had a greater effect on maxillary dento-alveolar restriction. (ClinicalTrials.in.th: TCTR 20180220003).

下颌前位训练与固定II类矫正器治疗成长期骨骼II类错颌畸形的效果
目的比较固定矫治器(PowerScope™)矫正成长期患者骨骼类错颌时,II类弹性矫治器和前下颌位训练对固定式II类矫治器的治疗效果。材料和方法36例骨性II类错颌畸形伴毒瘤位置后缩的生长患者随机分为II类弹力组或PowerScope™组。两个治疗组均采用预调节的侧边固定矫治器。对16/18例II类弹性组患者和15/18例PowerScope™组患者的骨骼、牙齿和轮廓变化进行比较,采用在(T0)前、初始对准(T1)后和获得I类(T2)后拍摄的侧位脑电图。结果II类弹性组的治疗时间明显长于PowerScope™组。就骨骼变化而言,II类弹性材料比PowerScope™显著增加了下颌长度、面中长度和下颌平面角度。在牙齿变化方面,Class II弹性材料比PowerScope™显著增加了牙齿高度。结论两种治疗方式均可降低ⅱ类错颌的严重程度和侧凸度。第二类弹性骨与前下颌位置训练增加下颌长度,但需要更长的治疗时间。PowerScope™对上颌牙槽限制有更大的效果。(ClinicalTrials.in。编号:TCTR 20180220003)。
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来源期刊
Orthodontic Waves
Orthodontic Waves DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
0.40
自引率
0.00%
发文量
0
期刊介绍: Orthodontic Waves is the official publication of the Japanese Orthodontic Society. The aim of this journal is to foster the advancement of orthodontic research and practice. The journal seeks to publish original articles (i) definitive reports of wide interest to the orthodontic community, (ii) Case Reports and (iii) Short Communications. Research papers stand on the scientific basis of orthodontics. Clinical topics covered include all techniques and approaches to treatment planning. All submissions are subject to peer review.
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