The aim of this study is to investigate the internal morphology of all-ceramic prostheses before seating. Micro X-ray CT was used to inspect three dimensionally the locations and sizes of pores within experimentally fabricated all-ceramic crowns as well as measure the veneer and core thickness. Scanning electron microscopy (SEM) was used to examine the fracture sites of clinically failed prostheses. Micro X-ray CT analysis revealed the distribution patterns of pores within the all-ceramic prostheses, and SEM fractographic analysis indicated a strong relationship between the existence of pores and crack propagation. Therefore, micro X-ray CT is a useful tool for nondestructive inspection of the internal morphology of all-ceramic prostheses to identify the critical defects before seating.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.4012/dmj.2010-167 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
[Analysis of the effect and influencing factors of glass fiber post and zirconia all ceramic crown in repairing tooth defects].
Shanghai Kou Qiang Yi Xue
October 2024
Department of Stomatology, Shandong Provincial Chronic Disease Hospital (Shandong Rehabilitation Center). Qingdao 266000, China. E-mail:
Purpose: To analyze the repair effect of glass fiber post combined with zirconia all ceramic crown in tooth defects and explore the relevant factors affecting the therapeutic effect.
Methods: A total of 100 patients(142 teeth) with dental defects admitted to Shandong Provincial Chronic Disease Hospital from January 2018 to January 2021 were selected as the study subjects. They were divided into an experimental group (glass fiber post combined with zirconia all ceramic crown restoration) with 70 patients(98 teeth) and the control group (metal post combined with zirconium dioxide all ceramic crown) with 30 patients (44 teeth).
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.
Retreatment and aesthetic restoration of maxillary incisor with calcified root canal using a dynamic navigation system: a case report.
BMC Oral Health
November 2024
Department of Stomatology, The First Medical Center, Chinese PLA General Hospital, No.28 Fuxing Road, Haidian District, Beijing, 100853, China.
Background: Pulp canal occlusion (PCO) increases the difficulty of root canal treatment as well as tooth preservation and restoration. This is the first case report of successful localization of a calcified root canal under the guidance of a dynamic navigation system (DNS) for complete root canal retreatment and aesthetic restoration after a failed attempt to locate the calcified root canal with a traditional dental operating microscope (DOM).
Case Presentation: The patient was scheduled for root canal treatment for a labially inclined maxillary central incisor and post-core crown restoration with resin veneers in another hospital, but the calcified root canal could not be located with a microscope, so the patient was referred to our department.
Static 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.
Longevity and risk factors of CAD-CAM manufactured implant-supported all-ceramic crowns - A prospective, multi-center, practice-based cohort study.
Dent Mater
November 2024
Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland; Department of Prosthetic Dentistry and Material Science, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.
Objectives: The aim of this prospective, multi-center, practice-based cohort study was to analyze factors associated with the success of implant supported all-ceramic single-unit crowns, made by computer-aided-design/computer-aided-manufacturing (CAD-CAM).
Methods: All-ceramic crowns placed in a private practice-based research network (Ceramic Success Analysis, AG Keramik) were analyzed. Data from 567patients with CAD-CAM implant supported all-ceramic crowns placed between 2008-2023 by 54dentists were evaluated.
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!