3D aesthetic evaluation of skeletal class Ⅱ and classⅢ subjects following Cm-Sn-Ls and Li-Sm-Pg angle change
10.3969/j.issn.1001-3733.2017.05.016
- VernacularTitle:鼻唇角、颏唇角改变对骨性Ⅱ类和Ⅲ类患者面容影响的三维美学评价
- Author:
Yue MA
1
;
Aishu REN
;
Gang FU
Author Information
1. 重庆医科大学附属口腔医院
- Keywords:
Skeletal class Ⅱ;
Skeletal class Ⅲ;
Three-dimensional aesthetics
- From:
Journal of Practical Stomatology
2017;33(5):647-652
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the influence of Cm-Sn-Ls and Li-Sm-Pg angle change on facial 3D aesthetics and to compare the aesthetic evaluation difference between orthodontic professionals and non-professionals.Methods:Facial photographs of a skeletal class Ⅱ and a class Ⅲ subject were respectively obtained and 3D head inodels were created by 3DMAX.Then 16 head models were obtained for each subject by changing Cm-Sn-Ls and Li-Sm-Pg angles.30 othodontic professionals and 60 non-professionals were chosen to score the models by NRS.Results:For class Ⅱ subject,the 2 groups gave lowest score to original profile,Cm-Sn-Ls and Li-Sm-Pg angle change of + 15°,-15°;the professionals gave highest score to(+ 10°,0)、(+ 15°,0),while non-professionals gave highest score to (+ 5 °,-5 °) and (+ 5°,-10°).For class Ⅲ subject,the 2 groups selected original profile,(0,+ 15 °) and (0,+ 10°) for lowest score,and professionals selected (-5°,+ 15°) 、(-10°,+ 15°) for highest score,while non-professionals choose (-10°,+5°) 、(-15°,0) for highest score (between groups,P ＜ 0.05).Conclusion:Both orthodontic professionals and non-professionals like the profile with appropriate compensation for skeletal class Ⅱ and class Ⅲ patients,but there is some aesthetic difference about the amount of compensation between the two groups.
