title: [Dental malocclusion among juveniles in Hangzhou municipality]
abstract: OBJECTIVE: To investigate the prevalence rate, malocclusion type and treatment rate as well as awareness of malocclusion among children and adolescents living in the Hangzhou municipality. METHODS: 1818 children and adolescents ages 7 approximate, equals 16 living in Hangzhou municipality were evaluated. RESULTS: The overall malocclusion rate was 35.75%. In Angle's classification: Angle I 593 cases (32.62%), Angle II 48 cases(2.64%),Angle III 9 cases (0.49%). Among the malocclusion type of crowding was mixed dentition 70.66%,permanent dentition 85.89%. In the overjet malocclusion mixed dentition was noted in 60.57% and permanent dentition in 51.05%.The type of overbite was mixed dentition 67.82%,permanent dentition 31.23%. In the crossbite of anterior teeth mixed dention was noted in 12.30% and permanent dention in 9.91%. Overall treatment rate for malocclusion was 10.15%.CONCLUSION: Among Hangzhou municipality juveniles there is both inadequate prevention and treatment of dental malocclusion.
authors.affiliation: The Affiliated Stomatological Hospital, College of Medical Sciences, Zhejiang University, Hangzhou 310006, China.
authors.forename: Ji-Na
authors.initials: JN
authors.lastname: Huang
authors.forename: Gang-Mei
authors.initials: GM
authors.lastname: Xu
authors.forename: Jun-Chao
authors.initials: JC
authors.lastname: Zhang
authors.forename: Hong-Hui
authors.initials: HH
authors.lastname: Gu