Prediction of mesiodistal crown diameters of canine based on genetic algorithms method
- VernacularTitle:基于遗传算法的尖牙冠宽的预测
- Author:
Luyi YANG
;
Guanghong HAN
;
Fengshan CHEN
- Publication Type:Journal Article
- Keywords:
canine crown diameter;
orthodontic;
genetic algorithms;
stepwise regression analysis
- From:
Journal of Jilin University(Medicine Edition)
2006;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To establish an equation between canine and other permanent teeth,and probe a new method to predict the sum of the mesiodistal diameters of unerupted permanent canines.Methods Samples consisted of 118 dental casts were obtained from Chinese patients(50 males,68 females,respectively).Mesiodistal tooth diameters were measured by a vernier caliper.GAS was used to establish the equation between canine and other permanent teeth,and compared with stepwise regression analysis.Those were modelling samples that optimized equations coefficient(112 samples).Others were inspection samples(6 samples).Results The equation between canine and other permanent teeth was established.MU=0.0511U1+0.2164U2+0.2780U4+0.0407U5+0.2853U6+0.8321①;ML=0.2998U1+0.1294U2+0.3912U4+0.0088U5+0.0791U6+0.9839②;FU=0.1419U1+0.1741U2+0.3258U4+0.0412U5+0.093U6+1.7355③;FL=0.2796U1+0.3750U2+0.2968U4+0.0268U5+0.0043U6+0.6030④.Compared with stepwise regression analysis,the mean error of precision by GAS was less(P
