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Clinical crown length changes from age 12-19 years: a longitudinal study.
L A Morrow1, J W Robbins, D L Jones
1Restorative Dentistry, University Dental Hospital of Manchester, Higher Cambridge Street, M15 6FH, Manchester, UK. leean.morrow@man.ac.uk
Journal of Dentistry
|August 29, 2000
Summary
Clinical crown length increases throughout teenage years, influenced by age and gender. This passive eruption impacts treatment decisions for young patients needing anterior dental work.
Area of Science:
- Dentistry and Orthodontics
- Human Growth and Development
Background:
- Clinical crown length is a key factor in orthodontic treatment planning.
- Understanding age and gender influences on crown length is crucial for accurate assessments.
Purpose of the Study:
- To investigate the relationship between age, gender, and clinical crown length.
- To analyze longitudinal changes in crown height during adolescence.
Main Methods:
- Examined 456 sets of study models from a longitudinal cohort study.
- Measured clinical crown height of four specific teeth (11, 13, 22, 31) at ages 11-12, 14-15, and 18-19.
- Utilized digital calipers for precise crown height measurements.
Main Results:
- Significant age-related increases in crown length were observed for all four teeth studied (p<0.0001).
- Gender significantly affected crown length in three of the four teeth examined.
- Crown length significantly increased between each assessment period for the maxillary canine and incisors (p<0.0001).
Conclusions:
- Passive eruption, leading to increased clinical crown length, continues through adolescence.
- Findings are vital for clinicians treating teenagers and young adults with anterior dental issues.