Clinical evaluation of the functional appliance therapy of retrusive mandible
- VernacularTitle:功能矫治器矫治下颌后缩
- Author:
Yiyu FANG
;
Song CHEN
;
Yang CAO
- Publication Type:Journal Article
- Keywords:
Functional appliance;
Retrusive mandible
- From:
Chinese Journal of Medical Aesthetics and Cosmetology
2001;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the lateral profile changes after the functional appliance was used to put forward the mandible. Methods Thirty one cases of maloclusion (subclass Ⅰ of the class Ⅱ) were selected,in which all the mandible were in a backward position revealed by clinical examination and roentgenographic cephalometry.Functional appliance was used to put forward the mandible,and then the changes of IMPA, Z angle, H angle, soft tissue profile angle, upper lip E Line, lower lip E Line, upper lip/lower lip, and lower facial height were compared before and after treatment. Results All of the cases showed up a better improvement of the profile after the functional appliance therapy. Z angle, H angle, soft tissue profile angle, upper Lip E line, upper Lip/lower lip, lower facial height became normal or close to normal.There was a statistical significantce in the changes ( P
