Root length, crown height, and root morphology in Turner syndrome.

Abstract:

:Root length, crown height, and root morphology were studied on intraoral and panoramic radiographs in 33 Turner syndrome patients aged 7.0-16.7 years, subdivided on the basis of karyotype. Thirty-three normal girls aged 10.2-16.4 years served as controls. In the 45X patients and, with the exception of a few teeth, also in the isochromosome and mosaic karyotypes, root length and crown height of incisors, canines, and premolars were significantly reduced. Some teeth showed altered crown-root proportions. Maxillary first premolars showed a significantly increased number of two-rooted and three-rooted variants. Mandibular premolars and molars had a complex root morphology, and a classification system was established including four premolar and six molar root types. Premolars had a significantly increased number of root components. Some of the variants, such as a molar-like second premolar, are apparently specific for these patients. On several first molars a radix entomolaris was identified. Two separate mesial and one or two separate distal roots were also frequently seen. Our investigation demonstrates that X-chromosome deficiency influences root formation.

journal_name

Acta Odontol Scand

authors

Midtbø M,Halse A

doi

10.3109/00016359409029043

subject

Has Abstract

pub_date

1994-10-01 00:00:00

pages

303-14

issue

5

eissn

0001-6357

issn

1502-3850

journal_volume

52

pub_type

杂志文章
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  • Reasons for replacement and the age of failed restorations in posterior teeth of young Finnish adults.

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