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Standards for permanent tooth emergence in Finnish children
R Eskeli1, M T Laine-Alava, H Hausen
1Department of Orthodontics, University of Oulu, Finland.
The Angle Orthodontist
|December 11, 1999
Summary
This study analyzed permanent tooth eruption in Finnish children aged 5-16. Findings reveal earlier eruption of some teeth and later eruption of premolars compared to previous Scandinavian data, with no regional differences observed.
Area of Science:
- Pediatric Dentistry
- Human Biology
- Dental Anthropology
Background:
- Understanding permanent tooth emergence timing is crucial for assessing child development and dental health.
- Previous studies on Scandinavian populations provide a baseline, but secular trends and improved dental care may alter eruption patterns.
Purpose of the Study:
- To determine the median ages of permanent tooth eruption in Finnish children.
- To investigate potential regional variations in tooth emergence timing within Finland.
- To establish updated national standards for permanent tooth eruption in Finland.
Main Methods:
- A cross-sectional study involving 1577 Finnish children aged 5 to 16 years.
- Probit analysis was employed to calculate the median ages of eruption for permanent teeth.
- Data collection focused on two distinct geographical regions within Finland.
Main Results:
- Permanent teeth in the initial mixed dentition phase erupted earlier than previously reported for Scandinavian children.
- Premolar eruption occurred later than previously reported, potentially due to improved dental health.
- No significant regional variations in the timing of permanent tooth emergence were identified across Finland.
Conclusions:
- The established median eruption ages provide a current benchmark for Finnish children.
- The findings suggest a need to update national standards for permanent tooth emergence.
- Improved dental health appears to influence tooth eruption patterns in contemporary Finnish children.
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