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Radiographic follow-up of impacted third molars from age 20 to 32 years
I Ventä1, L Turtola, P Ylipaavalniemi
1Department of Oral Medicine, University of Helsinki, Finland. irja.venta@helsinki.fi
International Journal of Oral and Maxillofacial Surgery
|April 6, 2001
Summary
Impacted third molars can significantly change position and impaction state over time, even into adulthood. These radiographic changes often occur without causing noticeable pain or symptoms.
Area of Science:
- Dentistry
- Oral Surgery
- Radiology
Background:
- Impacted third molars are common dental findings.
- Longitudinal changes in their position and impaction status are not fully understood.
- Understanding these changes is crucial for treatment planning.
Purpose of the Study:
- To investigate radiographic changes in impacted third molars over a 12-year period.
- To correlate radiographic findings with clinical symptoms.
- To assess changes in tooth inclination and impaction state.
Main Methods:
- Radiographic follow-up of 34 impacted third molars in 19 patients from age 20 to 32.
- Clinical examinations and panoramic radiographs at baseline and study end.
- Analysis of tooth resorption, follicle size, root development, inclination, impaction depth, and relation to adjacent structures.
Main Results:
- Significant changes in tooth inclination observed, particularly in the mandible (76% changed angulation).
- 44% of impacted teeth showed a change in their impaction state (soft tissue, bone, or full bone impaction).
- Most patients (74%) reported no pain or symptoms related to their third molars during the study period.
Conclusions:
- Considerable radiographic changes, including altered inclination and impaction status, can occur in third molars after the typical eruption age.
- These radiographic alterations may proceed asymptomatically.
- Long-term radiographic monitoring may be beneficial for managing impacted third molars.