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Oligodontia in Danish schoolchildren
Acta Odontologica Scandinavica
|May 24, 2001
Summary
Oligodontia, a rare dental condition, affects 0.16% of children, with second premolars and lateral incisors most commonly missing. This congenital tooth anomaly is more prevalent in girls than boys.
Area of Science:
- Dentistry
- Human Genetics
- Epidemiology
Background:
- Oligodontia, characterized by the congenital absence of six or more teeth, is a rare dental anomaly.
- Limited epidemiological data exist regarding the prevalence of oligodontia, particularly in pediatric populations.
Purpose of the Study:
- To determine the prevalence of oligodontia in Danish schoolchildren.
- To identify the specific teeth most frequently affected by congenital absence.
- To investigate potential sex-based differences in oligodontia frequency.
Main Methods:
- Analysis of dental records from Danish schoolchildren.
- Combination of current data with previously published data from the same cohort.
- Comparison with similar data from Nordic countries to assess prevalence and sex differences.
Main Results:
- Oligodontia was identified in 0.16% of Danish schoolchildren (95% CI: 0.07%–0.30%).
- Congenitally missing teeth were most frequently the second premolars (upper and lower) and upper lateral incisors.
- A statistically significant higher prevalence of oligodontia was observed in girls compared to boys (P = 0.05) when Nordic data were combined.
Conclusions:
- Oligodontia prevalence in Danish schoolchildren is estimated at 0.16%.
- Specific tooth types, namely second premolars and upper lateral incisors, are most commonly affected.
- Girls exhibit a higher frequency of oligodontia than boys, suggesting a potential sex-linked component.