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[Root shape changes of impacted upper central incisor before and after orthodontic traction]
Hong-wei Dong1, Shi-ting Xu2, Yin-jun Yu1
1Shisizhen Dental Clinic,Tongji University. Shanghai 200032, China.
Shanghai Kou Qiang Yi Xue = Shanghai Journal of Stomatology
|April 12, 2016
Summary
Orthodontic traction is most effective for impacted upper central incisors when initiated before complete root development. This approach optimizes root shape and length, leading to successful alignment.
Area of Science:
- Dentistry
- Orthodontics
- Radiology
Background:
- Impacted maxillary central incisors are a common clinical challenge.
- Accurate assessment of root development is crucial for treatment planning.
Purpose of the Study:
- To evaluate root shape changes in impacted upper central incisors during orthodontic traction using cone-beam computed tomography (CBCT).
- To determine the optimal timing for initiating orthodontic traction of impacted upper central incisors based on root development.
Main Methods:
- Ten impacted maxillary central incisors were identified and localized using panoramic radiography and CBCT.
- Orthodontic traction was performed following surgical exposure.
- Post-treatment CBCT scans assessed root development and shape changes.
Main Results:
- Successful traction and alignment were achieved in all ten cases.
- Incisors with fully developed root apices showed no root shape alteration.
- Incisors with incomplete root development exhibited continued root elongation and improved shape.
Conclusions:
- Initiating orthodontic traction for impacted upper central incisors before complete root apex formation yields favorable outcomes.
- Early intervention promotes favorable root development and shape improvement.
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