Influence of conservative endodontic access and the osteoporotic bone on the restoration material adhesive behavior through finite element analysis

Assess, using finite element analysis, the adhesive behavior of Class I restorations under physiological occlusal loads on an endodontically treated first upper premolar with conventional and conservative crown opening surrounded by alveolar bone in normal and osteoporotic conditions. For this, four...

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Bibliographic Details
Published in:	Journal of materials science. Materials in medicine Vol. 31; no. 4; p. 39
Main Authors:	Franco, Aline Batista Gonçalves, Franco, Amanda Gonçalves, de Carvalho, Geraldo Alberto Pinheiro, Ramos, Elimario Venturin, Amorim, José Cláudio Faria, de Martim, Alexandre Sigrist
Format:	Journal Article
Language:	English
Published:	New York Springer US 11-04-2020 Springer Nature B.V
Subjects:	Adhesion tests Adhesives Alveolar bone Axial loads Axial skeleton Biocompatible Materials Biomaterials Biomaterials Synthesis and Characterization Biomechanical Phenomena Biomedical Engineering and Bioengineering Biomedical materials Ceramics Chemistry and Materials Science Complications Composites Computer Simulation Crowns Dental Cements Dental enamel Dentin Finite Element Analysis Finite element method Glass Humans Load Materials Science Materials Testing Mathematical models Natural Materials Osteoporosis Polymer Sciences Printing, Three-Dimensional Regenerative Medicine/Tissue Engineering Restoration Root canals Surfaces and Interfaces Tensile strength Thin Films
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Summary:	Assess, using finite element analysis, the adhesive behavior of Class I restorations under physiological occlusal loads on an endodontically treated first upper premolar with conventional and conservative crown opening surrounded by alveolar bone in normal and osteoporotic conditions. For this, four virtual models were used: M1—conservative access/normal bone; M2—conventional access/normal bone; M3—conservative access/osteoporotic bone; M4—conventional access/osteoporotic bone. On enamel, under axial load, the highest peaks occurred on conventional models and, under oblique load, the highest peaks occurred on conservative opening models. The bone condition showed no influence on the adhesive behavior. On dentin, under axial load, the models showed similar behaviors, regardless of the bone condition; under oblique load, the highest incidence of forces occurred on the distal region of the palatal root canal entrance and the highest peak was observed in the conventional opening model with normal bone. Also, under oblique load, conventional opening models showed larger values on dentin for the normal bone and similar for the osteoporotic. The conclusions shows higher displacement tensile strength peaks were observed in the conventional models, which can lead to a greater risk of adhesive failure on class I restorations with this opening. Therefore, a conservative opening would be recommended to avoid opening clinical complications. The bone condition showed no significant influence on adhesive behavior, except for dentin under oblique load, where conventional models showed larger values relative to normal bone and similar to the osteoporotic bone.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0957-4530 1573-4838
DOI:	10.1007/s10856-020-06377-7