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Occlusal changes from primary to permanent dentitions
British Journal of Orthodontics
|October 1, 1986
Summary
Predicting permanent teeth alignment from baby teeth is broadly reliable but not exact for individuals. While incisal overjet and overbite are stable, changes in sagittal relationships can occur, making precise forecasting difficult.
Area of Science:
- Dentistry
- Orthodontics
- Pediatric Dentistry
Background:
- Assessing the transition from primary to permanent dentition is crucial for orthodontic diagnosis.
- Understanding the predictability of occlusal changes informs early intervention strategies.
Purpose of the Study:
- To evaluate the persistence of primary dentition occlusal features into the permanent dentition.
- To determine the reliability of predicting permanent dentition characteristics from primary dentition assessments.
Main Methods:
- A longitudinal study design was employed.
- Occlusal features were tracked from the primary dentition to age 12 (permanent dentition).
- Analysis focused on incisal relationships, overbite, overjet, and arch crowding prediction.
Main Results:
- Incisal overjet and overbite showed minimal changes but exhibited unpredictable directional shifts.
- Sagittal arch relationships were generally stable, with a tendency towards Class II changes (mandibular retroposition).
- Primary dentition space analysis offered general reliability for predicting permanent dentition crowding, but individual accuracy varied.
Conclusions:
- While broad predictability exists, individual forecasting of occlusal development is unreliable.
- Orthodontic treatment planning requires careful consideration of potential unpredictable changes.
- Early dental assessments provide valuable but not definitive insights into future occlusal status.