AI Article Synopsis
Article Abstract
Background: Causes of failures in class V restorations have always been controversial until now, since the biomechanical aspects of these restorations have been understood.
Aims And Objective: This study was aimed to verify the hypothesis that eccentric forces are the cause of cuspal flexure, which lead to excessive stresses at the periphery of a class V restoration, further it identifies the amount of the stress and the flexure increase in the presence of an occlusal restoration using different restorative materials to restore (both cervical and occlusal) along with their comparison with respect to amount of stresses around the cervical restorations.
Materials And Methods: The study was done by modeling a mandibular first premolar which was sectioned bucco-lingually, in the NISA, EMRC II finite element software. A 100N eccentric load was applied on the tooth structure and stresses were observed at the peripheries of the class V restoration when it was restored with composite and with glass ionomer cement. The stresses were further analyzed in the presence of occlusal restorations with different materials and configurations.
Results: It was seen that the stresses at the gingival wall interface in case of class V glass ionomer cement was more than that for composite. In the presence of an occlusal amalgam restoration, the cuspal flexure was more than that of occlusal composite and the stresses at the class V peripheries were also statistically significant.
Conclusion: It was suggested that lower modulus composites can flex with the tooth structure decreasing the bond failure and that the stresses are much lesser when there is absence of an occlusal restoration. Occlusal composite restorations reinforce the tooth structure and reduce the cuspal flexure as compared to silver amalgam.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.4103/0970-9290.84308 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Evaluation of interproximal and occlusal contacts of single posterior implant-supported restorations fabricated using different CAD software programs: A clinical study.
J Prosthet Dent
December 2024
Professor and Chairman, Department of Prosthodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
Statement Of Problem: The accuracy of the interproximal and occlusal contacts of single posterior implant-supported restorations designed using computer-aided design (CAD) software programs remains uncertain.
Purpose: The aim of this clinical study was to assess the interproximal and occlusal contacts of single posterior implant-supported restorations designed with 2 distinct dental CAD software programs.
Material And Methods: Forty single posterior implant-supported restorations were evaluated for interproximal and occlusal contacts.
Evaluating fatigue resistance in occlusal veneers: a comparative study of processing techniques and material thickness of lithium disilicate (IPS e.max Press vs. IPS e.max CAD).
BMC Oral Health
December 2024
Department of Prosthodontics, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.
Background: Lithium disilicate occlusal veneers are popular for minimally invasive posterior teeth restoration. The aim of this study was to compare the fatigue resistance and crack pattern of lithium disilicate occlusal veneers fabricated using pressing and milling techniques with varying thicknesses.
Methods: Sixty lithium disilicate discs, representing occlusal veneers, were divided into four groups (n = 15) based on processing technique (IPS e.
Two-Year Clinical Evaluation of Enamel Wear Antagonistic to Polished and Glazed Monolithic Zirconia Endocrowns.
J Esthet Restor Dent
December 2024
Department of Fixed Prosthodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt.
Objective: To assess the effect of chairside adjustment and polishing on the clinical performance of zirconia endocrowns and digitally calculate the opposing enamel wear.
Materials And Methods: A total of 20 participants received zirconia endocrowns on their endodontically treated lower first molars. All endocrowns were fabricated using CAD/CAM technology.
Digital trifunctional intraoral appliance for centric relation recording: A dental technique.
J Prosthet Dent
December 2024
Program Director of Prosthodontics, Department of Restorative Dentistry and Biomaterial Sciences, Harvard School of Dental Medicine, Boston, Mass. Electronic address:
A technique for fabricating a trifunctional intraoral appliance is described. This appliance streamlines the process of recording centric relation by combining the functions of an anterior deprogrammer, gothic arch tracer, and record base with occlusal rims into a single device. The use of digital tools in this technique offers greater convenience and efficiency compared with conventional methods.
View Article and Find Full Text PDFComparison of fit and trueness of single-unit and short-span fixed dental restorations fabricated by additive and subtractive manufacturing - A systematic review and meta-analysis.
J Dent
December 2024
Centre for Translational Medicine, Semmelweis University, Budapest, Hungary; Department of Prosthodontics, Semmelweis University, Budapest, Hungary. Electronic address:
Objectives: Numerous studies have been conducted on the adaptation of dental restorations fabricated by additive (AM) and subtractive manufacturing (SM); however, the results are conflicting. This systematic review and meta-analysis aimed to evaluate the fit and trueness of fixed restorations made by AM compared to SM.
Data: Studies investigating internal fit, marginal fit, and trueness of fixed prostheses were involved.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!