title: Analysis of 300 dentofacial deformities in Hong Kong.
abstract: The records of 300 consecutive Chinese patients with a dentofacial deformity were reviewed to determine the spectrum and characteristics of deformities presenting to a university joint orthognathic clinic. Twenty-six percent of the patients had cleft lip and palate with maxillary hypoplasia; within this group, 26% had double jaw deformity and 5% had nasomaxillary hypoplasia. Of the noncleft group, 47% were Class III facial types, of which 59% were due to mandibular hyperplasia. Of the noncleft group, facial asymmetry accounted for 21%, long face for 18%, bimaxillary protrusion for 14%, Class II types for 11%, and short face for 4%. Overall, there was a high incidence of two-jaw deformity, suggesting that severity may be a major factor in the decision by patients to seek treatment. Findings from this study are thought to be generally applicable to overseas Chinese.
authors.affiliation: Department of Oral and Maxillofacial Surgery, University of Hong Kong Prince Philip Dental Hospital.
authors.forename: N
authors.initials: N
authors.lastname: Samman
authors.forename: A C
authors.initials: AC
authors.lastname: Tong
authors.forename: D L
authors.initials: DL
authors.lastname: Cheung
authors.forename: H
authors.initials: H
authors.lastname: Tideman
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002971:Cleft Lip / Q000453:epidemiology / Q000601:surgery; D002972:Cleft Palate / Q000453:epidemiology / Q000601:surgery; D005146:Facial Asymmetry / Q000453:epidemiology* / Q000601:surgery; D005260:Female; D006723:Hong Kong / Q000453:epidemiology; D006801:Humans; D007569:Jaw Abnormalities / Q000453:epidemiology* / Q000601:surgery; D008297:Male; D012189:Retrospective Studies