Scopus
🔓 Açık Erişim
Biomechanical and Bio-Inspired Perspectives on Root Amputation in Maxillary Molars: An FEA Study
Biomimetics · Kasım 2025
Makale Bilgileri
DergiBiomimetics
Yayın TarihiKasım 2025
Cilt / Sayfa10
Scopus ID2-s2.0-105022943932
Erişim🔓 Açık Erişim
Özet
This study aimed to evaluate the biomechanics of maxillary first molar teeth following palatal, disto-buccal, and mesio-buccal root amputation. An intact maxillary molar underwent root canal treatment using Reciproc R25 files (VDW, Munich, Germany). The canals were obturated with gutta-percha (DiaDent, Seoul, Republic of Korea) and 2Seal sealer (VDW, Munich, Germany), and the access cavity was restored with composite resin. A high-resolution CBCT scan of an intact maxillary first molar was obtained using a Planmeca Promax 3D Max system (Planmeca Oy, Helsinki, Finland) at 75 kVp and 10 mA. The acquired data were processed in 3D Slicer software (v5.8.0, BSD license, Boston, MA, USA) to segment enamel, dentin, and pulp based on pixel density variations using the three-point cloud method. A baseline intact model and three root-resected models (palatal, disto-buccal, mesio-buccal) were reconstructed in SolidWorks 2021, with resected roots simulated as being sealed with MTA. Finite element analysis was conducted in CosmosWorks to evaluate von Mises stress distribution under a 300 N static occlusal load. Maximum von Mises stresses were detected at occlusal force application sites. Among root dentin tissues, stress values ranked highest after palatal root resection, followed by the mesio-buccal, disto-buccal, and non-resected models. Conclusions: Palatal root amputation of maxillary first molars generated the highest von Mises stresses in root dentin, suggesting a higher biomechanical risk than disto-buccal or mesio-buccal resections.
Yazarlar (2)
1
Öznur Küçük Keleş
ORCID: 0000-0002-7303-0601
2
Öznur Eraslan
Anahtar Kelimeler
bio-inspired load transfer
endodontic microsurgery
finite element analysis (FEA)
maxillary first molar
root amputation
tooth biomechanics
Kurumlar
Ankara Yildirim Beyazit University
Ankara Turkey
Selçuk Üniversitesi
Selçuklu Turkey