Evaluation of the postoperative stability of a counter-clockwise rotation technique for skeletal class II patients by using a novel three- dimensional position-posture method

Abstract The aim of this study is to evaluate the postsurgical stability of skeletal class II patients after performing a counter-clockwise rotational (CCWR) procedure for the maxilla-mandibular complex (MMC) by using a novel Three-dimensional (3D) Position-Posture(P-P) measuring method. Twenty-five...

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Autores principales:	Zhuqing Wan, Steve Guofang Shen, Haijun Gui, Peng Zhang, Shunyao Shen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3ec144a8395e4fde8f4ebc06cb448db8
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spelling	oai:doaj.org-article:3ec144a8395e4fde8f4ebc06cb448db82021-12-02T15:08:47ZEvaluation of the postoperative stability of a counter-clockwise rotation technique for skeletal class II patients by using a novel three- dimensional position-posture method10.1038/s41598-019-49335-22045-2322https://doaj.org/article/3ec144a8395e4fde8f4ebc06cb448db82019-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-49335-2https://doaj.org/toc/2045-2322Abstract The aim of this study is to evaluate the postsurgical stability of skeletal class II patients after performing a counter-clockwise rotational (CCWR) procedure for the maxilla-mandibular complex (MMC) by using a novel Three-dimensional (3D) Position-Posture(P-P) measuring method. Twenty-five patients (5 males and 20 females) were included in this study. The postoperative CT scans of the skull were taken before surgery(T0), 3–7 days (T1), 3 months (T2), and 6 months (T3) after surgery. Specific anatomic landmarks were chosen to determine the position of the segments, while three equally perpendicular planes were created to describe their posture. The results show that the linear relapse of maxillary landmarks during the follow-up were acceptable (≤0.5 mm). The relapse of maxillary pitch plane at 6-months follow-up is 1.52°, which is acceptable. There was a significant pitch plane relapse of the mandibular-body segment with an average of 1.86° between T1 and T2 models, 3.28° between T1 and T3 models. There was no significant difference between roll and yaw planes during the follow-up. We therefore conclude that the P-P method could be used to accurately analyze the postsurgical stability of skeletal class II orthognathic surgery cases. For CCWR procedures, it was also shown that the there is a tendency for recurrence most specially on the body of the mandible.Zhuqing WanSteve Guofang ShenHaijun GuiPeng ZhangShunyao ShenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-9 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Zhuqing Wan Steve Guofang Shen Haijun Gui Peng Zhang Shunyao Shen Evaluation of the postoperative stability of a counter-clockwise rotation technique for skeletal class II patients by using a novel three- dimensional position-posture method
description	Abstract The aim of this study is to evaluate the postsurgical stability of skeletal class II patients after performing a counter-clockwise rotational (CCWR) procedure for the maxilla-mandibular complex (MMC) by using a novel Three-dimensional (3D) Position-Posture(P-P) measuring method. Twenty-five patients (5 males and 20 females) were included in this study. The postoperative CT scans of the skull were taken before surgery(T0), 3–7 days (T1), 3 months (T2), and 6 months (T3) after surgery. Specific anatomic landmarks were chosen to determine the position of the segments, while three equally perpendicular planes were created to describe their posture. The results show that the linear relapse of maxillary landmarks during the follow-up were acceptable (≤0.5 mm). The relapse of maxillary pitch plane at 6-months follow-up is 1.52°, which is acceptable. There was a significant pitch plane relapse of the mandibular-body segment with an average of 1.86° between T1 and T2 models, 3.28° between T1 and T3 models. There was no significant difference between roll and yaw planes during the follow-up. We therefore conclude that the P-P method could be used to accurately analyze the postsurgical stability of skeletal class II orthognathic surgery cases. For CCWR procedures, it was also shown that the there is a tendency for recurrence most specially on the body of the mandible.
format	article
author	Zhuqing Wan Steve Guofang Shen Haijun Gui Peng Zhang Shunyao Shen
author_facet	Zhuqing Wan Steve Guofang Shen Haijun Gui Peng Zhang Shunyao Shen
author_sort	Zhuqing Wan
title	Evaluation of the postoperative stability of a counter-clockwise rotation technique for skeletal class II patients by using a novel three- dimensional position-posture method
title_short	Evaluation of the postoperative stability of a counter-clockwise rotation technique for skeletal class II patients by using a novel three- dimensional position-posture method
title_full	Evaluation of the postoperative stability of a counter-clockwise rotation technique for skeletal class II patients by using a novel three- dimensional position-posture method
title_fullStr	Evaluation of the postoperative stability of a counter-clockwise rotation technique for skeletal class II patients by using a novel three- dimensional position-posture method
title_full_unstemmed	Evaluation of the postoperative stability of a counter-clockwise rotation technique for skeletal class II patients by using a novel three- dimensional position-posture method
title_sort	evaluation of the postoperative stability of a counter-clockwise rotation technique for skeletal class ii patients by using a novel three- dimensional position-posture method
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/3ec144a8395e4fde8f4ebc06cb448db8
work_keys_str_mv	AT zhuqingwan evaluationofthepostoperativestabilityofacounterclockwiserotationtechniqueforskeletalclassiipatientsbyusinganovelthreedimensionalpositionposturemethod AT steveguofangshen evaluationofthepostoperativestabilityofacounterclockwiserotationtechniqueforskeletalclassiipatientsbyusinganovelthreedimensionalpositionposturemethod AT haijungui evaluationofthepostoperativestabilityofacounterclockwiserotationtechniqueforskeletalclassiipatientsbyusinganovelthreedimensionalpositionposturemethod AT pengzhang evaluationofthepostoperativestabilityofacounterclockwiserotationtechniqueforskeletalclassiipatientsbyusinganovelthreedimensionalpositionposturemethod AT shunyaoshen evaluationofthepostoperativestabilityofacounterclockwiserotationtechniqueforskeletalclassiipatientsbyusinganovelthreedimensionalpositionposturemethod
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Evaluation of the postoperative stability of a counter-clockwise rotation technique for skeletal class II patients by using a novel three- dimensional position-posture method

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