Effectiveness of training methods to improve orbicularis oris muscle endurance in patients with incompetent lips
Effectiveness of training methods to improve orbicularis oris muscle endurance in patients with incompetent lips
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DOI：
10.1016/j.odw.2015.07.001
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发表时间：
2015-12-01
影响因子：
0.4
通讯作者：
Iida, Junichiro
中科院分区：
文献类型：
--
作者：
Ohtsuka, Mai;Kaneko, Tomoo;Iida, Junichiro
目的：唇力不全有多种不良影响，包括上颌前突、张开咬合等错牙合。我们以前将嘴唇功能不全定义为放松时封口率小于30.1%，集中注意力时封口率小于13.2%。本研究旨在评价唇耐力训练对唇力不全的治疗效果。研究对象和方法：18名健康志愿者(男12人，女6人，年龄25.0+/-2.5岁)。在研究开始时(T1)、放松时(受试者闭着眼睛听舒缓的音乐)、集中注意力(受试者被给予一项计算任务)以及4周后再次计算封闭嘴唇比率(T2)。将牵引板插入受试者的口腔前庭，然后进行标准化的唇耐力训练(20次重复收缩，最大口轮匝肌拉伸强度的50%)，每天重复4周。在训练开始后2周(T3)和4周(T4)以及结束唇耐力训练后4周(T5)和8周(T6)重新评估封唇率。计算封唇比=(封唇时间/总记录时间)×100。结果：松弛时封唇率(9.0±7.7%)和浓度(4.4+/-5.1%)在T3(64.2+/-17.3%和53.7+/-18.3%；P<；0.01)和T4(92.2+/-9.1%和90.7+/-12.8%；P<；0.01)升高。训练后T4、T5与T6无明显差异。结论：唇耐力训练可提高唇语能力，有助于提高唇语功能不全患者的生活质量。(C)2015年爱思唯尔有限公司和日本正畸学会。版权所有。
Purpose: Lip-incompetence has various negative effects including malocclusion such as maxillary protrusion and open bite. We previously defined a lip-incompetence as having a sealed lip ratio of less than 30.1% during relaxation and less than 13.2% during concentration. The aim of this study was to estimate the effectiveness of lip endurance training in lip-incompetence.Subjects and methods: Eighteen healthy volunteers (12 males and 6 females, 25.0 +/- 2.5 years) with lip-incompetence participated. The sealed lip ratio was estimated at the start of the study (T1) during relaxation (subjects listened to soothing music with their eyes closed) and during concentration (subjects were given a calculation task) and again after 4 weeks (T2). A traction plate was inserted into the oral vestibules of each subjects, who then performed a standardized lip-endurance training (20 repetitive contractions with 50% of maximum tensile strength of the orbicularis oris), repeated daily for 4 weeks. Sealed lip ratio was re-estimated at 2 weeks (T3) and 4 weeks (T4) after the start of training and at 4 weeks (T5) and 8 weeks (T6) after the termination of lip-endurance training. The sealed lip ratio was calculated "sealed lip ratio = (lip-sealing time/total recorded time) x 100".Results: Sealed lip ratios during relaxation (9.0 +/- 7.7%) and concentration (4.4 +/- 5.1%) increased at T3 (64.2 +/- 17.3% and 53.7 +/- 18.3%; P < 0.01) and T4 (92.2 +/- 9.1% and 90.7 +/- 12.8%; P < 0.01). During post-training, there was no apparent difference between T4, T5 and T6.Conclusion: Lip-endurance training improves lip-competence and could be useful for improving QOL of patients with lip-incompetence. (C) 2015 Elsevier Ltd and the Japanese Orthodontic Society. All rights reserved.