title: Crown size asymmetry in males with fra (X) or Martin-Bell syndrome.
abstract: We measured the mesio-distal and bucco-lingual crown diameters of 13 males with the fra(X) or Martin-Bell syndrome. Fluctuating crown-size asymmetry was calculated and compared with values obtained in normal Caucasian children and also with a sample of 19 males with Down syndrome. A statistically significant increased asymmetry was found in the fra(X) males when compared to normal control individuals. In the maxilla, Down syndrome males showed a significantly higher tooth crown asymmetry than fra(X) males. (less than 0.02); in the mandible, no significant differences were found between the 2 groups. It is suggested that crown size asymmetry be included in the evaluation of fra(X) males.
authors.affiliation: Department of Pedodontics, Hadassah Faculty of Dental Medicine, Jerusalem, Israel.
authors.forename: B
authors.initials: B
authors.lastname: Peretz
authors.forename: P
authors.initials: P
authors.lastname: Ever-Hadani
authors.forename: P
authors.initials: P
authors.lastname: Casamassimo
authors.forename: E
authors.initials: E
authors.lastname: Eidelman
authors.forename: C
authors.initials: C
authors.lastname: Shellhart
authors.forename: R
authors.initials: R
authors.lastname: Hagerman
mesh_terms: D004314:Down Syndrome / Q000473:pathology; D005600:Fragile X Syndrome / Q000473:pathology*; D006801:Humans; D008297:Male; D012729:Sex Chromosome Aberrations / Q000473:pathology*; D014071:Tooth Abnormalities / Q000235:genetics*