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Volume 12
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10.3390/jpm12030508
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Article

Changes in Facial Profile after Modified Anterior Maxillary Subapical Osteotomy

by
Chun-Ming Chen
1,2,†,
Szu-Ting Chou
2,3,
Shih-Chieh Chen
3,
Chin-Yun Pan
3,
Kun-Jung Hsu
2,4,† and
Yu-Chuan Tseng
2,3,*
1
Department of Oral and Maxillofacial Surgery, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
2
School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
3
Department of Orthodontics, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
4
Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
J. Pers. Med. 2022, 12(3), 508; https://doi.org/10.3390/jpm12030508
Submission received: 27 January 2022 / Revised: 2 March 2022 / Accepted: 18 March 2022 / Published: 21 March 2022
(This article belongs to the Special Issue Prevention and Management of Oral Healthcare)
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Abstract

(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.
Keywords: bimaxillary protrusion; anterior maxillary subapical osteotomy; facial profile; soft–hard tissue ratio; Wassmund technique; Wunderer technique bimaxillary protrusion; anterior maxillary subapical osteotomy; facial profile; soft–hard tissue ratio; Wassmund technique; Wunderer technique

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MDPI and ACS Style

Chen, C.-M.; Chou, S.-T.; Chen, S.-C.; Pan, C.-Y.; Hsu, K.-J.; Tseng, Y.-C. Changes in Facial Profile after Modified Anterior Maxillary Subapical Osteotomy. J. Pers. Med. 2022, 12, 508. https://doi.org/10.3390/jpm12030508

AMA Style

Chen C-M, Chou S-T, Chen S-C, Pan C-Y, Hsu K-J, Tseng Y-C. Changes in Facial Profile after Modified Anterior Maxillary Subapical Osteotomy. Journal of Personalized Medicine. 2022; 12(3):508. https://doi.org/10.3390/jpm12030508

Chicago/Turabian Style

Chen, Chun-Ming, Szu-Ting Chou, Shih-Chieh Chen, Chin-Yun Pan, Kun-Jung Hsu, and Yu-Chuan Tseng. 2022. "Changes in Facial Profile after Modified Anterior Maxillary Subapical Osteotomy" Journal of Personalized Medicine 12, no. 3: 508. https://doi.org/10.3390/jpm12030508

APA Style

Chen, C.-M., Chou, S.-T., Chen, S.-C., Pan, C.-Y., Hsu, K.-J., & Tseng, Y.-C. (2022). Changes in Facial Profile after Modified Anterior Maxillary Subapical Osteotomy. Journal of Personalized Medicine, 12(3), 508. https://doi.org/10.3390/jpm12030508

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