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Updated: May 19, 2026
07:26
Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
Published on: August 22, 2022
How often do asymptomatic, disease-free third molars need to be removed?
1Institute of Dentistry, Department of Oral and Maxillofacial Surgery, Helsinki University, Helsinki, Finland. irja.venta@helsinki.fi
Summary
Predicting third molar (M3) eruption is possible with high accuracy. Preventive removal of M3s is recommended for specific cases, while others should be monitored for symptoms.
Area of Science:
- Dentistry
- Oral Surgery
- Evidence-Based Medicine
Background:
- Third molar (M3) removal timing requires predicting eruption and identifying future pathology.
- Current guidelines for preventive M3 removal need evidence-based evaluation.
Purpose of the Study:
- To assess the accuracy of predicting M3 eruption.
- To review the frequency of impacted M3 removal.
- To summarize evidence-based indications for preventive M3 removal in Finland.
Main Methods:
- Systematic review of existing literature.
- Analysis of the Finnish Current Care Guideline for M3 management.
Main Results:
- M3 eruption prediction accuracy ranges from 80% to 97%.
- M3 prevalence decreases significantly with age (31% remain at 38 years).
- Preventive removal is indicated for specific mandibular M3 positions and root proximity to the mandibular canal.
Conclusions:
- One-fourth of disease-free M3s warrant preventive removal at a young age.
- The remaining M3s should be managed based on clinical signs and symptoms.
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