【作者】 王璐；

【导师】 胡刚；

【作者基本信息】 大连医科大学 ， 外科学（专业学位）， 2021， 硕士

【摘要】 目的:本研究使用核磁共振成像(Magnetic Resonance Imaging,MRI)测量辽宁地区不同年龄、不同性别汉族人群下面部软组织厚度及侧貌形态角度,探讨下面部软组织及侧貌形态的老化改变、不同性别间下面部软组织侧貌差异及下面部各美学要素间的关联。初步建立一组辽宁省汉族人群下面部软组织厚度及侧貌形态的测量数据,为下面部年轻化治疗提供参考。方法:按照筛选标准选取近十年来于大连医科大学附属第一医院行颅面MRI扫描的患者,其中男性122名,女性126名,将其按照年龄分组,18-28岁男性41人,女性43人;45-55岁男性41人,女性43人;≥65岁男性40人,女性40人。以既往国内外学者所定义的软硬组织标志点为参考,选取下面部正中矢状面上与侧貌相关性较强的标志点。在核磁共振图像正中矢状面上测量所需的下面部鼻下点、人中点、上唇突点、下唇突点、颏上点、软组织颏前点、软组织颏下点等7处软组织厚度,以及面型角、鼻唇角、上唇颏凸角、下唇颏凸角、颏唇沟角等5个反应下面部侧貌形态的角度,应用SPSS软件进行统计学分析。结果:本文研究数据显示下面部软组织厚度及侧貌形态存在性别差异。在下面部软组织厚度的测量中,青年组、中年组、老年组男性在鼻下点、人中点、上唇突点、下唇突点、颏上点、软组织颏前点、软组织颏下点处的软组织均厚于同年龄组女性,各年龄组间差异均有统计学意义。在下面部侧貌形态角度的测量中,青年男性组上唇颏凸角、下唇颏凸角大于青年女性组;中年男性组面型角、鼻唇角、上唇颏凸角、下唇颏凸角、颏唇沟角大于中年女性组;老年男性组面型角、下唇颏凸角大于老年女性组,各年龄组间差异均有统计学意义。下面部鼻唇部软组织厚度存在老化改变。在男、女性研究对象中,青年组、中年组、老年组人群在鼻下点、人中点、上唇突点、下唇突点等鼻唇部测量点处的软组织逐渐变薄,各年龄组间差异均有统计学意义。下面部颏部软组织厚度存在老化改变。在男、女性研究对象中,青年组、中年组、老年组人群在颏上点、软组织颏前点、软组织颏下点等颏部测量点处的软组织先增厚后变薄。由青年至中年,男、女性三处颏部软组织增厚,均有统计学意义;由中年至老年,男、女性颏前点软组织变薄,有统计学意义。下面部软组织侧貌存在老化改变。在男、女性研究对象中,青年组、中年组、老年组人群上唇颏凸角、下唇颏凸角逐渐减小;由青年至中年,女性面型角、鼻唇角减小,有统计学意义;由中年至老年,男性鼻唇角减小,男、女性颏唇沟角减小,各组间差异均有统计学意义。下面部侧貌形态角度间的相关性研究显示,在青年组、中年组、老年组人群中,男、女性面型角均与上唇颏凸角、下唇颏凸角呈正相关;上唇颏凸角与下唇颏凸角呈正相关,有统计学意义。男性面型角在中年期与鼻唇角呈正相关,女性面型角在青年期、中年期、老年期均与鼻唇角呈正相关,有统计学意义。在青年女性组中,面型角与鼻唇角、上唇颏凸角、下唇颏凸角呈正相关,与颏唇沟角呈负相关变化;颏唇沟角与面型角、上唇颏凸角、下唇颏凸角呈负相关,与鼻唇角呈正相关,有统计学意义。结论:辽宁地区汉族人群中,下面部软组织厚度及侧貌形态受到老化影响且存在性别差异。三个年龄组男性下面部软组织均厚于同龄组女性,鼻唇部软组织和颏部软组织的老化模式存在差异,但两处软组织的老化模式均在不同性别间保持一致。男女性侧貌差异主要表现在中年期,此期男性侧貌形态角度均大于女性。组成下面部的鼻唇颏三要素之间存在相关性。更多还原

【Abstract】 Objective: In this study,Magnetic Resonance Imaging(MRI)was used to measure the thickness of the lower facial soft tissue and the profile angle of Han people of different ages and genders in Liaoning,and explore the aging changes and facial profile changes of the lower facial soft tissue,and discuss the differences of the facial profile in the lower facial soft tissue between different genders and the relationship between the various aesthetic elements of the lower facial part,a preliminary database of the thickness and profile morphology of the lower facial part of the Han population in Liaoning Province was established to provide a reference for the treatment of lower part rejuvenation.Methods: According to the screening criteria,patients who underwent craniofacial MRI scans in the First Affiliated Hospital of Dalian Medical University in the past ten years were selected.Among them,122 were males and 126 were females.They were grouped according to ages.There were 41 males and 43 females in the range of 18-28 years old.;There are 41 men and 43 women in the 45-55 year-old range;40 men and 40 women in the 65-year-old range.Refer to the soft and hard tissue landmarks defined by scholars at home and abroad,we select the landmarks on the lower mid-sagittal plane that have a strong correlation with the facial profile,find the MRI mid-sagittal plane tomographic section,and use the imaging diagnosis system to read the image.Use the measuring ruler to measure the soft tissue thickness of 7 measuring points including the subnasale,midpoint,upper labrale,lower labrale,supramentale,pogonion of soft tissue,menton of soft tissue.Five angles including facial angle,nasolabial angle,chin lobe of upper lip,chin lobe of lower lip,and menthol sulcus angle,which reflect the profile shape of the lower facial part,the datas were analyzed by SPSS software.Results: The research data in this article shows that there are gender differences in the thickness and profile of the lower soft tissue.In the measurement of the thickness of the lower soft tissue,in the youth group,middle-aged group,and old group men at the subnasale,human midpoint,upper labrale,lower labrale,supramentale,pogonion of soft tissue,and menton of soft tissue.The soft tissues were thicker than women in the same age group,and there were statistically significant differences between age groups.In the measurement of the lower profile angle,the upper lip chin lobe and lower lip chin lobe in the young male group are larger than the young women’s group;The face angle,nasolabial angle,upper lip chin lobe,lower lip chin lobe,and menthol sulcus angle in the middleaged male group were larger than those in the middle-aged female group;The facial angle and lower lip chin lobe of the elderly male group were larger than those of the elderly female group,and the differences between the age groups were statistically significant.There were aging changes in the thickness of the soft tissues of the lower nasolabial region.Among the male and female people,the soft tissues of the nasolabial point,midpoint,upper labrale,lower labrale points gradually become thinner in the youth group,middle-aged group,and elderly group.The differences between the groups were statistically significant.There were aging changes in the soft tissue thickness of the chin part.Among the male and female people,the soft tissues of the young group,middle-aged group,and old group were thickened first and then thinner at the measurement points of supramentale,pogonion of soft tissue,menton of soft tissue.From young to middle-aged,the soft tissues of the chin in males and females were thickened,all of which were statistically significant;From middle age to old age,the supramentale point of men and women became thinner,which was statistically significant.There were aging changes in the profile of the lower soft tissue.Among the male and female subjects,the upper and lower lip chin lobes gradually decreased in the youth group,middle-aged group,and elderly group;From middle-age to old age,the menthol sulcus angle decreased in men and women,and the differences between the groups were statistically significant;From young to middle-aged,female facial angles and nasolabial angles decrease,which was statistically significant;From middle age to old age,men’s nasolabial angle decreased,which was statistically significant.The study of the correlation between the profile angles of the lower part shows,In the youth group,middle-aged group,and old group,the facial angle of men and women were positively correlated with the upper lip chin lobe and the lower lip chin lobe;upper lip chin lobe were positively correlated with the lower lip chin lobe,which was statistically significant.Male facial angle was positively correlated with nasolabial angle in middle age,female facial angle was positively correlated with nasolabial angle in youth,middle age,and old age,which was statistical significance.In the young female group,the facial angle was positively correlated with the nasolabial angle,upper lip chin lobe,and lower lip chin lobe angle,and negatively correlated with the menthol sulcus angle;Menthol sulcus angle was negatively correlated with facial angle,upper lip chin lobe,and lower lip chinl lobe angle,and positively correlated with nasolabial angle,which was statistically significant.Conclusions: In the Han population in Liaoning,the thickness and profile of the lower soft tissue were affected by aging and there are gender differences.The lower soft tissues of men in the three age groups were thicker than women,and the aging patterns of nasolabial soft tissues and chin soft tissues were different,but they were consistent between different genders.Most of the males in the three age groups have a larger profile angle than females,and the differences in male and female profiles were mainly manifested in the middle age.There were correlations between the three elements of the nasolabial chin that compose the lower part.更多还原