Changes in Facial Profile after Modified Anterior Maxillary Subapical Osteotomy
(1) Background: This study explored the effects of modified anterior maxillary subapical osteotomy (AMSO) on facial profile changes in patients with bimaxillary protrusion. (2) Methods: Cephalograms of patients were collected preoperatively and over 2 months postoperatively. The following landmarks...
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MDPI AG
2022-03-01
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| Series: | Journal of Personalized Medicine |
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| Online Access: | https://www.mdpi.com/2075-4426/12/3/508 |
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| author | Chun-Ming Chen Szu-Ting Chou Shih-Chieh Chen Chin-Yun Pan Kun-Jung Hsu Yu-Chuan Tseng |
| author_facet | Chun-Ming Chen Szu-Ting Chou Shih-Chieh Chen Chin-Yun Pan Kun-Jung Hsu Yu-Chuan Tseng |
| author_sort | Chun-Ming Chen |
| collection | DOAJ |
| description | (1) Background: This study explored the effects of modified anterior maxillary subapical osteotomy (AMSO) on facial profile changes in patients with bimaxillary protrusion. (2) Methods: Cephalograms of patients were collected preoperatively and over 2 months postoperatively. The following landmarks were recorded: pronasale (Prn), subnasale (Sn), labrale superius (Ls), anterior nasal spine (ANS), and incisor superius (Is). The following distances and angles were measured: ANS–Prn, ANS–Sn, ANS–Ls, Is–Sn, Is–Ls, SNA angle, and nasolabial (NLA) angle. (3) Results: Is and ANS were significantly retracted by 7.3 and 2.3 mm, respectively. Soft tissue landmarks (Prn, Sn, and Ls) were significantly retracted (1.2, 1.6, 4.4 mm, respectively). Postoperative changes in soft/hard tissue ratios were 0.54, 0.72, 0.31, and 0.60 for Prn/ANS, Sn/ANS, ANS/Is, and Ls/Is, respectively. The NLA angle was increased significantly by 7.1°. (4) Conclusions: The horizontal soft/hard tissue ratios of Sn/Is, ANS/Is, and Ls/Is were 0.22, 0.31, and 0.60, respectively. The NLA angle was increased significantly by 7.1°. The modified AMSO provides an increased blood supply, allows for direct vision, and results in fewer complications than other AMSO methods. |
| first_indexed | 2024-03-09T13:38:28Z |
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| language | English |
| last_indexed | 2024-03-09T13:38:28Z |
| publishDate | 2022-03-01 |
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| record_format | Article |
| series | Journal of Personalized Medicine |
| spelling | doaj.art-c473dfcd7d7f4f16b8b7ecac899f844b2023-11-30T21:09:27ZengMDPI AGJournal of Personalized Medicine2075-44262022-03-0112350810.3390/jpm12030508Changes in Facial Profile after Modified Anterior Maxillary Subapical OsteotomyChun-Ming Chen0Szu-Ting Chou1Shih-Chieh Chen2Chin-Yun Pan3Kun-Jung Hsu4Yu-Chuan Tseng5Department of Oral and Maxillofacial Surgery, Kaohsiung Medical University, Kaohsiung 80708, TaiwanSchool of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 80708, TaiwanDepartment of Orthodontics, Kaohsiung Medical University Hospital, Kaohsiung 80756, TaiwanDepartment of Orthodontics, Kaohsiung Medical University Hospital, Kaohsiung 80756, TaiwanSchool of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 80708, TaiwanSchool of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan(1) Background: This study explored the effects of modified anterior maxillary subapical osteotomy (AMSO) on facial profile changes in patients with bimaxillary protrusion. (2) Methods: Cephalograms of patients were collected preoperatively and over 2 months postoperatively. The following landmarks were recorded: pronasale (Prn), subnasale (Sn), labrale superius (Ls), anterior nasal spine (ANS), and incisor superius (Is). The following distances and angles were measured: ANS–Prn, ANS–Sn, ANS–Ls, Is–Sn, Is–Ls, SNA angle, and nasolabial (NLA) angle. (3) Results: Is and ANS were significantly retracted by 7.3 and 2.3 mm, respectively. Soft tissue landmarks (Prn, Sn, and Ls) were significantly retracted (1.2, 1.6, 4.4 mm, respectively). Postoperative changes in soft/hard tissue ratios were 0.54, 0.72, 0.31, and 0.60 for Prn/ANS, Sn/ANS, ANS/Is, and Ls/Is, respectively. The NLA angle was increased significantly by 7.1°. (4) Conclusions: The horizontal soft/hard tissue ratios of Sn/Is, ANS/Is, and Ls/Is were 0.22, 0.31, and 0.60, respectively. The NLA angle was increased significantly by 7.1°. The modified AMSO provides an increased blood supply, allows for direct vision, and results in fewer complications than other AMSO methods.https://www.mdpi.com/2075-4426/12/3/508bimaxillary protrusionanterior maxillary subapical osteotomyfacial profilesoft–hard tissue ratioWassmund techniqueWunderer technique |
| spellingShingle | Chun-Ming Chen Szu-Ting Chou Shih-Chieh Chen Chin-Yun Pan Kun-Jung Hsu Yu-Chuan Tseng Changes in Facial Profile after Modified Anterior Maxillary Subapical Osteotomy Journal of Personalized Medicine bimaxillary protrusion anterior maxillary subapical osteotomy facial profile soft–hard tissue ratio Wassmund technique Wunderer technique |
| title | Changes in Facial Profile after Modified Anterior Maxillary Subapical Osteotomy |
| title_full | Changes in Facial Profile after Modified Anterior Maxillary Subapical Osteotomy |
| title_fullStr | Changes in Facial Profile after Modified Anterior Maxillary Subapical Osteotomy |
| title_full_unstemmed | Changes in Facial Profile after Modified Anterior Maxillary Subapical Osteotomy |
| title_short | Changes in Facial Profile after Modified Anterior Maxillary Subapical Osteotomy |
| title_sort | changes in facial profile after modified anterior maxillary subapical osteotomy |
| topic | bimaxillary protrusion anterior maxillary subapical osteotomy facial profile soft–hard tissue ratio Wassmund technique Wunderer technique |
| url | https://www.mdpi.com/2075-4426/12/3/508 |
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