Stability of clockwise rotation of the maxillary occlusal plane in skeletal Class III patients treated with two-jaw surgery
© 2022 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd..
OBJECTIVE: The objective of the study was to investigate the post-surgical stability of clockwise rotation of the maxillary occlusal plane (MXOP) after Le Fort I osteotomy for posterior impaction and advancement, in skeletal Class III patients who had undergone two-jaw orthognathic surgery (2J-OGS).
MATERIALS AND METHODS: The sample set consisted of 46 patients (18 males and 28 females). Using lateral cephalograms taken at the initial evaluation (T0), before 2J-OGS (T1), after 2J-OGS (T2) and at debonding (T3), the amount of MXOP change (criterion: 2° in ΔMXOP [between T2 and T3]) was used to assign patients to Group 1 (G1, high relapse, -3.09°) or Group 2 (G2, low relapse, -0.99°). Findings were statistically compared between the groups.
RESULTS: Compared with G2, G1 exhibited more severe skeletal Class III relationships and a flatter MXOP at T0, a greater increase in ΔANB, and more clockwise rotation of ΔMXOP and ΔFMA between T1 and T2. G1 also showed a greater decrease in ΔANB, higher counterclockwise rotation of ΔMXOP and upward movement of U1 between T2 and T3. Regression analysis yielded the following equation: MXOP (ΔT2-T3) = -0.37 X MXOP (ΔT1-T2) -0.43.
CONCLUSIONS: The higher the clockwise rotation of the MXOP during 2J-OGS in skeletal Class III patients, the greater the subsequent relapse (counterclockwise rotation) of the MXOP.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:26 |
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| Enthalten in: |
Orthodontics & craniofacial research - 26(2023), 2 vom: 23. Mai, Seite 207-215 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Kang, Soon-Young [VerfasserIn] |
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| Links: |
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| Themen: |
Journal Article |
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| Anmerkungen: |
Date Completed 04.04.2023 Date Revised 04.04.2023 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1111/ocr.12601 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM345718526 |
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| 245 | 1 | 0 | |a Stability of clockwise rotation of the maxillary occlusal plane in skeletal Class III patients treated with two-jaw surgery |
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| 500 | |a Date Revised 04.04.2023 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2022 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. | ||
| 520 | |a OBJECTIVE: The objective of the study was to investigate the post-surgical stability of clockwise rotation of the maxillary occlusal plane (MXOP) after Le Fort I osteotomy for posterior impaction and advancement, in skeletal Class III patients who had undergone two-jaw orthognathic surgery (2J-OGS) | ||
| 520 | |a MATERIALS AND METHODS: The sample set consisted of 46 patients (18 males and 28 females). Using lateral cephalograms taken at the initial evaluation (T0), before 2J-OGS (T1), after 2J-OGS (T2) and at debonding (T3), the amount of MXOP change (criterion: 2° in ΔMXOP [between T2 and T3]) was used to assign patients to Group 1 (G1, high relapse, -3.09°) or Group 2 (G2, low relapse, -0.99°). Findings were statistically compared between the groups | ||
| 520 | |a RESULTS: Compared with G2, G1 exhibited more severe skeletal Class III relationships and a flatter MXOP at T0, a greater increase in ΔANB, and more clockwise rotation of ΔMXOP and ΔFMA between T1 and T2. G1 also showed a greater decrease in ΔANB, higher counterclockwise rotation of ΔMXOP and upward movement of U1 between T2 and T3. Regression analysis yielded the following equation: MXOP (ΔT2-T3) = -0.37 X MXOP (ΔT1-T2) -0.43 | ||
| 520 | |a CONCLUSIONS: The higher the clockwise rotation of the MXOP during 2J-OGS in skeletal Class III patients, the greater the subsequent relapse (counterclockwise rotation) of the MXOP | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a relapse | |
| 650 | 4 | |a the maxillary rotation | |
| 650 | 4 | |a two-jaw orthognathic surgery | |
| 700 | 1 | |a Kim, Young Ho |e verfasserin |4 aut | |
| 700 | 1 | |a Baek, Seung-Hak |e verfasserin |4 aut | |
| 700 | 1 | |a Kim, Dong Woo |e verfasserin |4 aut | |
| 700 | 1 | |a Shin, Jeong Won |e verfasserin |4 aut | |
| 700 | 1 | |a Chae, Hwa Sung |e verfasserin |4 aut | |
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