Crown size asymmetry in males with fra (X) or Martin-Bell syndrome.
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.
Peretz
B
B
Department of Pedodontics, Hadassah Faculty of Dental Medicine, Jerusalem, Israel.
Ever-Hadani
P
P
Casamassimo
P
P
Eidelman
E
E
Shellhart
C
C
Hagerman
R
R
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*