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Evaluation of External Apical Root Resorption in Cases with Extraction and Non-Extraction Fixed Orthodontic Treatment
Ramazan Berkay Peker1, Pamir Meriç2
1Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Trakya University, Edirne 22030, Turkey.
Diagnostics (Basel, Switzerland)
|October 25, 2024
Summary
Orthodontic treatment involving tooth extraction significantly increases the risk of external apical root resorption (EARR), particularly in maxillary incisors, compared to non-extraction cases.
Area of Science:
- Orthodontics
- Dental Radiology
- Periodontology
Background:
- External apical root resorption (EARR) is a common side effect of orthodontic treatment.
- Understanding factors influencing EARR is crucial for optimizing treatment outcomes.
Purpose of the Study:
- To compare the incidence and severity of EARR in patients undergoing orthodontic treatment with or without tooth extraction.
- To identify specific tooth types most affected by EARR in extraction cases.
Main Methods:
- A retrospective study of 90 orthodontic patients, divided into extraction (43) and non-extraction (47) groups.
- EARR was assessed using the crown-to-root ratio on panoramic radiographs at the start and end of treatment.
- Statistical analysis included the Bonferroni corrected Z test for comparisons.
Main Results:
- A significantly higher prevalence of severe EARR was observed in the extraction group (55.8%) compared to the non-extraction group (25.5%).
- No resorption occurred in 10.6% of the non-extraction group, versus 0% in the extraction group.
- Maxillary and mandibular teeth in the extraction group showed significant differences in resorption, with maxillary incisors being notably affected.
Conclusions:
- Orthodontic treatment with tooth extraction is associated with a significantly higher risk of EARR.
- Maxillary incisors are particularly susceptible to EARR in extraction cases.
- Non-extraction orthodontic treatment generally results in less EARR.
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