Dynamic and static nasolabial muscle anatomy of unilateral cleft lip adult patients based on magnetic resonance imaging data
10.7518/hxkq.2024.2024063
- VernacularTitle:基于磁共振成像影像数据的单侧唇裂成人患者动静态鼻唇肌解剖研究
- Author:
Kangzhe WANG
1
;
Yuming LI
;
Chunchao XIA
;
Bing SHI
;
Chenghao LI
Author Information
1. 口腔疾病防治全国重点实验室 国家口腔医学中心 国家口腔疾病临床医学研究中心四川大学华西口腔医院唇腭裂外科,成都 610041
- Keywords:
magnetic resonance imaging;
unilateral cleft lip;
facial muscles;
three-dimensional reconstruction
- From:
West China Journal of Stomatology
2024;42(5):636-643
- CountryChina
- Language:Chinese
-
Abstract:
Objective This study aims to obtain a three-dimensional reconstruction model based on magnetic reso-nance imaging(MRI)data of patients with different degrees of unilateral cleft lip and analyze the anatomy and changes in multiple groups of nasolabial muscles under dynamic and static conditions.Methods One normal person and four adult patients with unilateral cleft lip were included,and MRI was performed under static(upper and lower lips closed naturally)and dynamic(pout and grin)conditions.3D Slicer software was used to reconstruct the model and draw the anatomic morphology of nasolabial muscles.The distance between the junction(where the muscle merges into the orbicularis oris)of the levator muscle,zy-gomaticminor muscle,and zygomatic major muscle to the median sagittal plane,the starting point to the junction point,the dynamic and static junction points,and the angle between the connection of dynamic and static junctions and the hori-zontal plane were measured under three kinds of movements,and the ratio was calculated.Results In all patients,un-der dynamic and static conditions,the distance from the muscle junction to the median sagittal plane,their ratios of the cleft side to the non-cleft side were all greater than 1.While the ratios of the distance from the starting point of the mus-cle to the junction point were less than 1.At static conditions,the two ratios of the same muscle increased gradiently with the severity of the cleft,and the ratio of the zygomatic minor muscle was prominent in the same patient.The ratio of the cleft side to the non-cleft side was greater than 1,and the value for comparison was the angle of the line from the static to the dynamic junction and the horizontal plane.Conclusion The symmetry of the insertion site of the orbicularis oris and the linear distance of both sides of the muscle are related to muscle and cleft types.The angle of muscle contraction on the cleft side is greater than that on the non-cleft side.
