Improved lip esthetics in patients with skeletal Class III malocclusion and facial asymmetry after isolated mandibular orthognathic surgery

作者全名："Xu, Wenjie; Tan, Hao; Meng, Xuehuan; Huang, Yumei; Cao, Li; Zheng, Leilei"

作者地址："[Xu, Wenjie; Tan, Hao; Meng, Xuehuan; Huang, Yumei; Zheng, Leilei] Chongqing Med Univ, Chongqing Key Lab Oral Dis & Biomed Sci, Chongqing Municipal Key Lab Oral Biomed Engn High, Dept Stomatol Hosp, Chongqing, Peoples R China; [Cao, Li] Chongqing Med Univ, Dept Stomatol Hosp, 426 Songshibei Rd, Chongqing 401147, Peoples R China"

通信作者："Zheng, LL (通讯作者)，Chongqing Med Univ, Dept Stomatol Hosp, 426 Songshibei Rd, Chongqing 401147, Peoples R China."

来源：AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS

ESI学科分类：CLINICAL MEDICINE

WOS号：WOS:000821555600001

JCR分区：Q1

影响因子：3

年份：2022

卷号：161

期号：5

开始页：E407

结束页：E415

文献类型：Article

关键词：　

摘要："Introduction: Asymmetry of the lips severely affects facial esthetics and is often one of the chief complaints of orthognathic patients, especially those with Class III malocclusion. The objectives of this study were to investigate the changes in lip symmetry in patients with mandibular prognathism and deviation and the relationships between jaw hard tissue and lip soft-tissue changes. Methods: Three-dimensional facial scan and cone-beam computed tomography scan data of 30 orthodontic-orthognathic patients treated with bilateral sagittal split ramus osteotomy were combined to conduct the research. Paired-sample t test and Pearson correlation coefficient were applied to compare the differences in the same variable before and after the orthognathic surgery and the potential correlations between the changes in hard and soft variables. To explore the important hard tissue variables influencing the lip soft-tissue changes, linear regression analysis was performed .Results: Although there was significant upper lip asymmetry presurgery, the upper lip asymmetry was corrected postsurgery. Surgical correction of the mandibular deviation was also accompanied by lengthening of the bilateral philtrum crests. Improvement in lip asymmetry and lengthening of the philtrum crests were primarily related to the transverse correction of the mandible rather than sagittal changes. The corresponding prediction formulas were established. Conclusions: The isolated mandibular bilateral sagittal split ramus osteotomy surgery can substantially improve the upper and lower lip asymmetry in patients with mandibular prognathism and deviation, but one should be wary of the unesthetic effects associated with lengthening of the philtrum crests."

基金机构：Medical Research Key Project of Chongqing Science and Technology Commission and Health and Family Planning Commission [2018ZDXM020]

基金资助正文：This work was supported by the Medical Research Key Project of Chongqing Science and Technology Commission and Health and Family Planning Commission Joint (Grant no. 2018ZDXM020) .