Ueki Koichiro, Marukawa Kohei, Moroi Akinori, Sotobori Megumi, Ishihara Yuri, Iguchi Ran, Kohsaka Akihiko, Nakano Yoshio, Higuchi Masatoshi, Nakazawa Ryuichi, Ikawa Hiroumi
Department of Oral and Maxillofacial Surgery (Head: Prof. Dr. K. Ueki), Division of Medicine, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi 409-3898, Japan.
Department of Oral and Maxillofacial Surgery (Head: Prof. Dr. K. Ueki), Division of Medicine, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 1110 Shimokato, Chuo-shi, Yamanashi 409-3898, Japan.
J Craniomaxillofac Surg. 2014 Sep;42(6):896-900. doi: 10.1016/j.jcms.2014.01.007. Epub 2014 Jan 10.
The purpose of this study was to examine the changes with time in lip pressure after orthognathic surgery for skeletal Class III patients.
The subjects consisted of 63 patients (32 female and 31 male) diagnosed with mandibular prognathism who underwent sagittal split ramus osteotomy with and without Le Fort I osteotomy. Maximum and minimum lip closing forces were measured with Lip De Cum(®). The changes with time were compared statistically.
The maximum and minimum lip closing force increased time-dependently in men and women after surgery and there were significant differences between men and women with changes with time in the maximum lip closing force (p = 0.0086) and the minimum lip closing force (p = 0.0302). After 1 year, the Class III group maximum lip closing force was significantly smaller than the control group in both men (p < 0.0001) and women (p < 0.0001).
This study suggests that there was significant difference in over time in the lip closing force between men and women in Class III patients. Although the maximum lip closing force increased with time, it did not reach the level of the control group after 1 year.
本研究旨在探讨骨性Ⅲ类患者正颌手术后唇压力随时间的变化情况。
研究对象包括63例诊断为下颌前突的患者（32例女性，31例男性），他们接受了下颌升支矢状劈开截骨术，部分患者还接受了Le Fort I截骨术。使用Lip De Cum(®)测量最大和最小唇部闭合力。对随时间的变化进行统计学比较。
术后男性和女性的最大和最小唇部闭合力均随时间增加，且在最大唇部闭合力（p = 0.0086）和最小唇部闭合力（p = 0.0302）随时间的变化方面，男性和女性之间存在显著差异。1年后，Ⅲ类组男性（p < 0.0001）和女性（p < 0.0001）的最大唇部闭合力均显著低于对照组。
本研究表明，Ⅲ类患者中男性和女性在唇部闭合力随时间的变化上存在显著差异。尽管最大唇部闭合力随时间增加，但1年后仍未达到对照组水平。
