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Fit accuracy and fracture resistance evaluation of advanced lithium disilicate crowns (in- vitro study).
BMC Oral Health
January 2025
Division of Fixed Prosthodontics, Conservative Dentistry Department, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
Background: Increasing demand for durable and aesthetically pleasing dental restorations, including laminates, inlays, onlays, and crowns, has led to advancements in all-ceramic systems, particularly with the development of advanced lithium disilicate materials. However, limited data on the fit accuracy and fracture resistance of these materials restricts their wider application in clinical restorative practices.
Aim Of The Study: This in vitro study aims to compare the marginal and internal fit, assess the fracture resistance, and evaluate the failure modes of crowns fabricated from advanced and conventional lithium disilicate materials.
Three-unit posterior monolithic fixed dental prostheses made from high-translucent shade-graded zirconia: 3-Year results from a prospective clinical pilot study.
Clin Oral Investig
December 2024
Department of Prosthetic Dentistry, University Hospital, LMU Munich, Goethestraße 70, D-80336, Munich, Germany.
Objectives: To assess the clinical performance of tooth-supported 3-unit fixed dental prostheses (FDPs) made from shade-graded monolithic 5Y-PSZ (partly stabilized zirconia) zirconia in terms of survival rate and the quality of restorations based on modified FDI criteria over three-years.
Materials And Methods: High-translucent shade-graded monolithic zirconia (Lava Esthetic, Solventum Dental Solutions) was used to manufacture maxillary or mandibular three-unit FDPs in the posterior region (N = 22) employing subtractive milling system (Amann Girrbach). All FDPs were bonded with a universal resin cement (Rely X Universal, Solventum Dental Solutions) and evaluated 4 weeks after cementation (baseline) and after 1, 2, and 3 years.
Success rate of all-ceramic FPDs depending on the time of restoration between 2011 and 2023.
J Adv Prosthodont
October 2024
Department of Prosthetic Dentistry and Biomedical Materials Research, Hannover Medical School, Hannover, Germany.
Purpose: Studies about success of FPDs (fixed partial dentures) mostly include restorations built by different clinicians. This results in limited comparability of the data. The aim of this study was to evaluate complications of all-ceramic FPDs built by 1 dentist between 2011 to 2023.
View Article and Find Full Text PDFStatic Loading of Different Intraradicular Preparation Depths of Trinia Endocrowns in Maxillary Canines.
J Contemp Dent Pract
June 2024
Department of Fixed Prosthodontics, Faculty of Dentistry, Galala University, Egypt.
Article Synopsis
- The study aims to compare the fracture resistance of canine teeth restored with TRINIA Endocrowns using three different preparation depths (2 mm, 3 mm, and 4 mm).
- Thirty extracted maxillary canines were endodontically treated and divided into three groups, each receiving endocrowns bonded using a dual-cure resin cement.
- Results indicated that endocrowns with 2 mm and 3 mm preparations exhibited significantly higher fracture resistance compared to the 4 mm preparation, with the 2 mm version being mostly reparable after failure.
In Vitro Effect of Anodization of Titanium Abutments on Color Parameters and Color Difference of Lithium Disilicate All-Ceramic Crowns.
Clin Exp Dent Res
October 2024
Institute for Color Science and Technology, Tehran, Iran.
Objective: This study assessed the effect of the anodization of titanium abutments on the color parameters and color difference of lithium disilicate (LDS) all-ceramic crowns.
Materials And Methods: In this study, 19 straight abutments were divided into two groups: anodized (n = 9) and non-anodized control (n = 9), with one hybrid zirconia abutment as a reference. Anodization was achieved by applying 63 V energy using seven 9 V flat batteries in series, with an electrolyte solution comprising 1 g trisodium phosphate in 250 mL distilled water for 5 s, resulting in a gold-yellow color.
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