Dental Eruption
Definition
The process by which a tooth moves through the alveolar bone and gingiva to emerge into the oral cavity. Eruption timing is distinct from, though correlated with, crown and root development stages.
- Process
- Tooth movement through bone and gum into the mouth
- Applies to
- Both deciduous and permanent dentition
- Forensic use
- Sub-adult age estimation
- Distinct from
- Crown and root formation stages
Common questions
Why is eruption timing considered less precise than formation staging for age estimation?+
Eruption is affected by local factors such as crowding, early tooth loss, and individual variation in the timing of gum emergence, so it is more variable between individuals than the radiographically staged formation of the crown and root. Formation stages are generally preferred when radiographs are available, with eruption used as a supporting or field-observable indicator.
Can eruption timing differ between populations?+
Yes, published eruption timing standards vary somewhat by population and nutritional status, so an examiner should use reference data appropriate to the individual's background where it is known.
Related terms
- AlQahtani London Atlas
- A 2010 dental developmental atlas covering birth to 23.5 years, constructed from a multi-ethnic London collection with known age at death; the...
- Demirjian Stages
- A seven-stage (A-G) scoring system for dental crown and root development applied to seven mandibular teeth; the maturity score derived from the...
- Epiphyseal Fusion
- The obliteration of the cartilaginous growth plate and bony union of the epiphysis with the diaphysis. Fusion sequence and timing form the...
- ICMR Dental Standards
- Indian Council of Medical Research benchmarks for dental eruption and development in Indian children, used alongside the Bagga atlas to provide population-appropriate...
- Medial Clavicle Epiphysis
- The last secondary ossification centre to fuse in the human skeleton, completing at 21 to 30 years depending on sex and population....
- Moorrees-Fanning-Hunt Stages
- A 13-stage system of dental crown and root development derived from the Fels Longitudinal Study (1963), applied to mandibular teeth and forming...
- Scheuer-Black Framework
- The reference system for developmental skeletal age estimation published by Louise Scheuer and Sue Black in 'Developmental Juvenile Osteology' (Academic Press, 2000)....
- Schmeling Protocol
- The multi-method age assessment framework (physical examination, dental radiograph, wrist radiograph, medial clavicle CT) developed by Andreas Schmeling and the AGFAD study...
- Third Molar Variability
- The wide interindividual and population variation in third molar development timing (eruption 16-22 years, root completion 18-25 years), which limits the third...