Tooth Crown Morphology in Turner and Klinefelter Syndrome Individuals from a Croatian Sample
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Authors
Maier, Christopher A.
Dumancic, Jelena
Brkic, Hrvoje
Kaic, Zvonimir
Pavicin, Ivana S.
Poje, Zvonko
Scott, G. Richard
Issue Date
2019
Type
Article
Language
en_US
Keywords
Tooth Crown Morphology , Turner Syndrome , Klinefelter Syndrome , X Chromosome
Alternative Title
Abstract
Turner syndrome (TS) and Klinefelter syndrome (KS) represent the two most common X chromosome aneuploidies, each associated with systemic disruptions to growth and development. Effects of these conditions on tooth crown morphology are explored in a sample of Croatian individuals. Material and Methods: The sample included 57 TS, 37 KS and 88 control individuals. Dental crown morphology was scored on dental casts according to the Turner-Scott Dental Anthropology System. Results: Incisor shoveling and the hypocone were significantly different between TS individuals and both control and KS individuals. Individuals with TS exhibit lower grades of expression than either group. Furthermore, the number of lingual cusps on the mandibular premolars, the hypoconulid on the mandibular second molar, and cusp 7 on the mandibular first molar were significantly different, though pair-wise comparisons did not elucidate these differences. Tuberculum dentale, distal accessory ridge, and Carabelli's trait were expressed similarly to the control. KS individuals were not significantly different from control individuals for any trait, though this may be related to sample size. Conclusions: Previous studies suggest the loss of an X chromosome has a reducing effect on dental crown morphology, which is confirmed in this research. TS individuals exhibit generally simpler dental morphology compared to the control sample, though some traits are expressed comparably to the control sample. The effects of KS are less clear. Though previous studies suggest that the presence of an extra X chromosome increases dental crown dimensions, there was no notable effect on crown morphology in this study.
Description
Citation
Maier, C., Dumančić, J., Brkić, H., Kaić, Z., Savić Pavičin, I., Poje, Z., & Scott, R. G. (2019). Tooth Crown Morphology in Turner and Klinefelter Syndrome Individuals from a Croatian Sample. Acta Stomatologica Croatica, 53(2), 106–118. doi:10.15644/asc53/2/2
Publisher
Acta Stomatologica Croatica
Journal
Volume
Issue
PubMed ID
ISSN
0001-7019