Next Article in Journal
Global Developmental Delay and Its Considerations in Paediatric Dental Care—A Case Report
Next Article in Special Issue
Mechanical Assessment of Glass Ionomer Cements Incorporated with Multi-Walled Carbon Nanotubes for Dental Applications
Previous Article in Journal
Oral Squamous Cell Carcinoma on Gingiva, Edentulous Ridge, and Retromolar Pad: A Case Series
Previous Article in Special Issue
Influence of Implant-Abutment Contact Surfaces and Prosthetic Screw Tightening on the Stress Concentration, Fatigue Life and Microgap Formation: A Finite Element Analysis
Communication

Influence of Cement Thickness on the Polymerization Shrinkage Stress of Adhesively Cemented Composite Inlays: Photoelastic and Finite Element Analysis

Institute of Science and Technology, São Paulo State University UNESP, São José dos Campos 12245-000, Brazil
*
Author to whom correspondence should be addressed.
Academic Editor: Eugenio Pedullà
Oral 2021, 1(2), 168-180; https://doi.org/10.3390/oral1020017
Received: 12 May 2021 / Revised: 7 June 2021 / Accepted: 11 June 2021 / Published: 21 June 2021
The objective of this study was to analyze the effect of cement thickness on the strain and stresses resulting from the polymerization of resin cement using photoelasticity and Finite Element Analysis (FEA). For this study, twenty upper first premolars with inlay cavity preparation were constructed from photoelastic resin and restored with composite resin inlay. The samples were divided into two groups (n = 10) according to the film thickness of resin cement material. For Group 1, the film thickness was 100 μm; for Group 2, the film thickness was 400 μm. After polymerization of the cement, photoelastic analysis and finite element analysis (FEA) were performed. In the photoelastic analysis, Group 2 showed higher strain with the presence of second-order fringe even after 24 h. In Group 1, the formation of first order fringes was not observed, even after 24 h. In the FEA analysis, the greatest cusp deflection and tensile stress occurred in Group 2 (0.00026 mm and 0.305 MPa, respectively) due to the polymerization shrinkage in the lingual cusp compared to Group 1 (0.000107 mm and 0.210 MPa, respectively). It can be concluded that the thickness of the resin cement influences the cusp deflection, with the greater thickness of the cement layer, the greater stresses and deformations in the tooth structure occur. View Full-Text
Keywords: dental materials; dental bonding; dental stress analyses; finite element analysis dental materials; dental bonding; dental stress analyses; finite element analysis
Show Figures

Figure 1

MDPI and ACS Style

Campaner, L.M.; Alves Pinto, A.B.; Demachkia, A.M.; Paes-Junior, T.J.d.A.; Pagani, C.; Borges, A.L.S. Influence of Cement Thickness on the Polymerization Shrinkage Stress of Adhesively Cemented Composite Inlays: Photoelastic and Finite Element Analysis. Oral 2021, 1, 168-180. https://doi.org/10.3390/oral1020017

AMA Style

Campaner LM, Alves Pinto AB, Demachkia AM, Paes-Junior TJdA, Pagani C, Borges ALS. Influence of Cement Thickness on the Polymerization Shrinkage Stress of Adhesively Cemented Composite Inlays: Photoelastic and Finite Element Analysis. Oral. 2021; 1(2):168-180. https://doi.org/10.3390/oral1020017

Chicago/Turabian Style

Campaner, Larissa M., Alana B. Alves Pinto, Amir M. Demachkia, Tarcísio J.d.A. Paes-Junior, Clóvis Pagani, and Alexandre L.S. Borges. 2021. "Influence of Cement Thickness on the Polymerization Shrinkage Stress of Adhesively Cemented Composite Inlays: Photoelastic and Finite Element Analysis" Oral 1, no. 2: 168-180. https://doi.org/10.3390/oral1020017

Find Other Styles

Article Access Map by Country/Region

1
Back to TopTop