Comparison of aesthetic outcomes of maxilla-only, mandible-only, and bimaxillary orthognathic surgeries: A retrospective analysis

IF 3.4 3区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of Dental Sciences Pub Date : 2025-01-15 DOI:10.1016/j.jds.2025.01.006

Chun-Te Ho , Tsui-Hsein Huang , Develas Deo , Angela Yuan Yuan Ho , Nia Ayu IsmaniatiNoerhadi , Chia-Tze Kao

{"title":"Comparison of aesthetic outcomes of maxilla-only, mandible-only, and bimaxillary orthognathic surgeries: A retrospective analysis","authors":"Chun-Te Ho , Tsui-Hsein Huang , Develas Deo , Angela Yuan Yuan Ho , Nia Ayu IsmaniatiNoerhadi , Chia-Tze Kao","doi":"10.1016/j.jds.2025.01.006","DOIUrl":null,"url":null,"abstract":"<div><h3>Background/purpose</h3><div>Orthognathic surgery addresses craniofacial and occlusal deformities caused by skeletal discrepancies. This study compares the aesthetic outcomes of maxilla-only, mandible-only, and bimaxillary surgeries, focusing on facial angles, proportions, and soft tissue aesthetics. It also identifies parameters most influencing postoperative aesthetics.</div></div><div><h3>Materials and methods</h3><div>Sixty Taiwanese patients (30 males, 30 females) were divided into three groups: maxilla-only, mandible-only, and bimaxillary surgeries (20 patients per group). Pre- and postoperative cephalograms were analyzed using six cephalometric methods. Paired and independent t-tests (P < 0.05) were conducted to evaluate changes and deviations from reference norms.</div></div><div><h3>Results</h3><div>The results of the study showed that maxilla-only surgery could lead to significant improvements in midface aesthetics, especially a notable increase in the nasolabial angle (<em>P</em> < 0.05) and a reduction in UL-E line distances (<em>P</em> < 0.05). The mandible-only surgery could enhance the lower facial symmetry with significant changes observed in the H angle (<em>P</em> < 0.05), SN-MP angle (<em>P</em> < 0.05), and LL-E line distances (<em>P</em> < 0.05). Bimaxillary surgery resulted in the most comprehensive improvements, including a significant increase in the lower anterior facial height (LAFH, <em>P</em> < 0.05), an enhanced nasolabial angle (<em>P</em> < 0.05), and an overall improvement in facial balance. However, a decrease in postoperative nasal prominence was observed across all surgical types when compared to reference norms, suggesting that secondary adjustments may be required.</div></div><div><h3>Conclusion</h3><div>Maxilla-only surgery improves midface proportions, while mandible-only surgery enhances lower facial balance. Bimaxillary surgery provides the most comprehensive outcomes. Individualized surgical planning and potential nasal refinements are crucial for optimal results.</div></div>","PeriodicalId":15583,"journal":{"name":"Journal of Dental Sciences","volume":"20 2","pages":"Pages 1118-1128"},"PeriodicalIF":3.4000,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Dental Sciences","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1991790225000066","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}

引用次数: 0

Abstract

Background/purpose

Orthognathic surgery addresses craniofacial and occlusal deformities caused by skeletal discrepancies. This study compares the aesthetic outcomes of maxilla-only, mandible-only, and bimaxillary surgeries, focusing on facial angles, proportions, and soft tissue aesthetics. It also identifies parameters most influencing postoperative aesthetics.

Materials and methods

Sixty Taiwanese patients (30 males, 30 females) were divided into three groups: maxilla-only, mandible-only, and bimaxillary surgeries (20 patients per group). Pre- and postoperative cephalograms were analyzed using six cephalometric methods. Paired and independent t-tests (P < 0.05) were conducted to evaluate changes and deviations from reference norms.

Results

The results of the study showed that maxilla-only surgery could lead to significant improvements in midface aesthetics, especially a notable increase in the nasolabial angle (P < 0.05) and a reduction in UL-E line distances (P < 0.05). The mandible-only surgery could enhance the lower facial symmetry with significant changes observed in the H angle (P < 0.05), SN-MP angle (P < 0.05), and LL-E line distances (P < 0.05). Bimaxillary surgery resulted in the most comprehensive improvements, including a significant increase in the lower anterior facial height (LAFH, P < 0.05), an enhanced nasolabial angle (P < 0.05), and an overall improvement in facial balance. However, a decrease in postoperative nasal prominence was observed across all surgical types when compared to reference norms, suggesting that secondary adjustments may be required.

Conclusion

Maxilla-only surgery improves midface proportions, while mandible-only surgery enhances lower facial balance. Bimaxillary surgery provides the most comprehensive outcomes. Individualized surgical planning and potential nasal refinements are crucial for optimal results.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Dental Sciences 医学-牙科与口腔外科

CiteScore

5.10

自引率

14.30%

发文量

348

审稿时长

6 days

期刊介绍： he Journal of Dental Sciences (JDS), published quarterly, is the official and open access publication of the Association for Dental Sciences of the Republic of China (ADS-ROC). The precedent journal of the JDS is the Chinese Dental Journal (CDJ) which had already been covered by MEDLINE in 1988. As the CDJ continued to prove its importance in the region, the ADS-ROC decided to move to the international community by publishing an English journal. Hence, the birth of the JDS in 2006. The JDS is indexed in the SCI Expanded since 2008. It is also indexed in Scopus, and EMCare, ScienceDirect, SIIC Data Bases. The topics covered by the JDS include all fields of basic and clinical dentistry. Some manuscripts focusing on the study of certain endemic diseases such as dental caries and periodontal diseases in particular regions of any country as well as oral pre-cancers, oral cancers, and oral submucous fibrosis related to betel nut chewing habit are also considered for publication. Besides, the JDS also publishes articles about the efficacy of a new treatment modality on oral verrucous hyperplasia or early oral squamous cell carcinoma.