4Gabris K, Tarjan I, Csiki P et al. Prevalence of congenital hypodontia in the permanent dentition and its treatment [J] . Fogorv Sz, 2001, 94 (4): 137.
5石四箴主编.儿童口腔病学[M].第1版,北京,人民卫生出版社,2001:4-46.
6Brown DF,Spencer AJ,Tolliday PD.Social and psychological factors associated with adolescents'selfacceptance of occlusal conditions[J].Community Dent Oral Epidemiol,1987,15(2):70-73.
