Evaluating the Effect of Oblique Ridge Conservation on Stress Distribution in an Endodontically Treated Maxillary First Molar: A Finite Element Study
| Autor: | Mahdi Baniasadi, H. Darijani, Faeze Hamze, Moasoud Parirokh |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Orthodontics Dental Stress Analysis Tooth Nonvital Materials science Finite Element Analysis Oblique case 030206 dentistry Stress distribution Ridge (differential geometry) Molar Finite element method Finite element study Stress (mechanics) 03 medical and health sciences 030104 developmental biology 0302 clinical medicine Belgium Maxillary first molar Humans France General Dentistry Palatal root |
| Zdroj: | Journal of endodontics. 47(3) |
| ISSN: | 1878-3554 |
| Popis: | Introduction Although the maxillary first molar (MFM) has been frequently subjected to stress analysis in endodontic investigations, the available data about the effect of its oblique ridge are quite sparse. The aim of this study includes evaluating the effect of the residual oblique ridge on the stress distribution after preparing conservative access cavities. Methods Based on the cone-beam computed tomographic data, the model of an intact MFM and 5 cavity designs were prepared for endodontic treatment, which were consequently filled with gutta-percha and dental resin composite (6 total models). All models were subjected to 4 types of occlusal loading; finite element analysis via ABAQUS CAE software (Dassault Systemes, Velizy-Villacoublay, France) was accomplished, whereas other software programs such as (Mimics Research Materialise, Leuven, Belgium) and 3-Matic Research (Materialise) were also incorporated in different stages for detecting stress distribution. Results The stress distribution on the MFM is not only dependent on the remaining width of the oblique ridge but also on the type of loading. The most stress on the cervical region was concentrated on the palatal root in some type of loading, whereas the least stress on the occlusal surface was recorded when the whole oblique ridge was replaced by the composite resin. Conclusions When the occlusal contacts are occurring only on the palatal cusp, the stress distribution on the oblique ridge is noticeably affected by the cavity design. |
| Databáze: | OpenAIRE |
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