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Apical Resection Mouse Model to Study Early Mammalian Heart Regeneration
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Effect of Root Resection Length and Graft Type Used After Apical Resection: A Finite Element Study
Zeynep Gümrükçü1, Sevda Kurt2, Sinan Köse3
1Assistant Professor, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Recep Tayyip Erdoğan University, Rize, Turkey.
Summary
Grafting materials reduce stress on resected tooth roots, with hydroxyapatite offering the most support. Increasing the amount of root resection increases stress and displacement, highlighting the importance of bone grafting in apical surgery.
Area of Science:
- Biomaterials Science
- Dental Surgery
- Biomechanics
Background:
- Apical resection is a dental surgical procedure to treat periapical lesions.
- Limited evidence exists on the biomechanical impact of varying resection amounts and graft materials on tooth stability.
Purpose of the Study:
- To investigate the biomechanical effects of different graft materials.
- To assess the influence of varying resection quantities on the tooth radix after apical resection.
Main Methods:
- Finite element models of mandibular incisors were created with apical defects.
- Simulated resections ranged from 0 to 5 mm, filled with bone, allograft, xenograft, or hydroxyapatite.
- A 100-N oblique force was applied, and von Mises stress and displacement were analyzed.
Main Results:
- Increased resection depth led to higher stress and displacement values.
- The 5-mm resected empty model exhibited the highest stress and displacement.
- Hydroxyapatite grafts resulted in the lowest stress and deformation, followed by xenografts and allografts.
Conclusions:
- Filling apical defects with graft materials provides significant biomechanical support to the resected root structure.
- The choice of graft material influences the mechanical stability of the tooth after apical resection.
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