We have located links that may give you full text access.
The evaluation of stress patterns in porcelain laminate veneers with different restoration designs and loading angles induced by functional loads: A three-dimensional finite element analysis study.
Nigerian Journal of Clinical Practice 2018 March
Background: Fractures in porcelain laminate veneers (PLVs) are a significant clinical problem. Preparation designs can affect stress distribution, which leads to fractures in PLVs. Therefore, identification of the most favorable preparation design in terms of stress distribution is required.
Objective: The purpose of this study is to examine the functional stress patterns of PLVs with featheredge, incisal bevel, and overlapped preparation designs under 0°, 60°, and 120° functional loads using finite element analysis.
Materials and Methods: Porcelain veneers with three different preparation designs (incisal overlap, incisal bevel, and featheredge) were modeled. A cement layer of 100 μm of luting composite resin was assumed, and a thickness of 0.5 mm of porcelain veneers was used. All models were loaded at 0°, 60°, and 120° to the long axis of the tooth to determine the stresses that may occur during mastication under different load angulations. A total force of 200 N was applied from the incisal edge of the models.
Results: Maximum stresses were recorded in the incisal overlapped design (53.3 MPa) under 120° of functional load. Minimum stresses were recorded in the incisal bevel preparation design (22.37 MPa) under 0° of functional load.
Conclusion: Both the preparation design and load angle affected the stress distribution on the PLVs. The incisal bevel preparation design provided a more appropriate geometry for stress distribution compared with the other techniques. Lateral forces produced more stress on the tooth and laminate material than vertical forces.
Objective: The purpose of this study is to examine the functional stress patterns of PLVs with featheredge, incisal bevel, and overlapped preparation designs under 0°, 60°, and 120° functional loads using finite element analysis.
Materials and Methods: Porcelain veneers with three different preparation designs (incisal overlap, incisal bevel, and featheredge) were modeled. A cement layer of 100 μm of luting composite resin was assumed, and a thickness of 0.5 mm of porcelain veneers was used. All models were loaded at 0°, 60°, and 120° to the long axis of the tooth to determine the stresses that may occur during mastication under different load angulations. A total force of 200 N was applied from the incisal edge of the models.
Results: Maximum stresses were recorded in the incisal overlapped design (53.3 MPa) under 120° of functional load. Minimum stresses were recorded in the incisal bevel preparation design (22.37 MPa) under 0° of functional load.
Conclusion: Both the preparation design and load angle affected the stress distribution on the PLVs. The incisal bevel preparation design provided a more appropriate geometry for stress distribution compared with the other techniques. Lateral forces produced more stress on the tooth and laminate material than vertical forces.
Full text links
Trending Papers
Acute and non-acute decompensation of liver cirrhosis (47/130).Liver International : Official Journal of the International Association for the Study of the Liver 2024 March 2
Guide to Utilization of the Microbiology Laboratory for Diagnosis of Infectious Diseases: 2024 Update by the Infectious Diseases Society of America (IDSA) and the American Society for Microbiology (ASM).Clinical Infectious Diseases 2024 March 6
Ten Influential Point-of-Care Ultrasound Papers: 2023 in Review.Journal of Intensive Care Medicine 2024 Februrary 20
Administration of methylene blue in septic shock: pros and cons.Critical Care : the Official Journal of the Critical Care Forum 2024 Februrary 17
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app