Objectives: Numerous clinical trials have proven the long-term stability of metal and metal-ceramic crowns. However, data on their performance under practice conditions are rare.
Purpose: To evaluate the longevity of crowns by means of massive data analyses.
Methods: The data were extracted from the data warehouse of a major German national health insurance company (BARMER, Berlin, Germany). The analysis focused on crown types with the lowest deductibles. Metal crowns and metal-ceramic crowns with ceramic veneering on the vestibular aspects of teeth 15-25 and 34-44 placed from 2012 to 2017 were included. The placement of the crowns, crown removals and tooth extractions were identified using the corresponding fee codes. Kaplan-Meier survival analyses were conducted for the outcomes "crown removal or extraction" and for "extraction".
Results: The cumulative six-year survival rates were 88.0 % for the outcome "crown removal or extraction" and 92.5 % for the outcome "extraction" (N = 192,868). The survival functions had slightly steepening but close to linear courses.
Conclusions: The outcome of the treatment with metal and metal-ceramic crowns was moderately inferior in comparison to clinical trials. However, treatment with metal and metal-crowns is judged to be a reliable and safe option under practice conditions.
Clinical Significance Statement: Clinicians must inform patients about potential treatment outcomes. Therefore, additional knowledge about single crown outcomes under general practice settings based on large database analyses is important.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jdent.2020.103459 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Comparative Study between Two Adjacent Implants Supported Crowns and One Implant Supported Cantilever Fixed Dental Prosthesis: An Study.
J Contemp Dent Pract
October 2024
Department of Crown and Bridge, Faculty of Dentistry, Al-Azhar University, Cairo, Egypt.
Aim: To assess hard as well as soft peri-implant tissues within cases having two lost adjacent anterior teeth treated through placing either two implants with two separate crowns or only an implant along with a crown with a cantilever, and evaluating the effect of polyetheretherketone (PEEK) restoration on cantilever design up to 18 months after functional loading.
Materials And Methods: Twenty-seven participants (15 males and 12 females; mean age, 38.6 years; range 20-50 years) with missing two adjacent anterior teeth were treated with implant system (Flotecno implant system, Italy).
A Digital Approach for a Complete Rehabilitation with Fixed and Removable Prostheses: A Technical Procedure.
Dent J (Basel)
December 2024
Department of Prosthodontics, University of Rennes, 35043 Rennes, France.
The present article describes a step-by-step maximally digitalized workflow protocol with computer-aided design and computer-aided manufacturing (CAD/CAM) in partial-arch edentulous patients rehabilitated with fixed dental prostheses and removable partial dentures (FDPs and RPDs). Facial digitalization, intraoral scans, and functional mandibular movement recordings were used to create a 4D virtual patient on commercially available CAD software. The fixed components including post-and-cores, both metal-ceramic with extra-coronal attachment and monolithic zirconia crowns, and the RPDs were manufactured by computer numerical controlled direct milling.
View Article and Find Full Text PDFOutcomes of surveyed monolithic CAD/CAM zirconia crowns for removable partial denture abutments: A 7-year clinical study.
J Prosthodont Res
January 2025
Department of Restorative Dentistry, College of Dental Medicine, University of Sharjah, Sharjah, UAE.
Purpose: This retrospective clinical study aimed to evaluate the clinical outcomes of surveyed monolithic computer-aided design and computer-aided manufacturing (CAD/CAM) zirconia crowns for abutment teeth in removable partial dentures (RPDs).
Methods: Patients who received monolithic surveyed zirconia crowns were clinically examined. The crowns were examined according to the modified United States Public Health Service criteria, and Kaplan-Meier survival was determined.
Fracture resistance and behavior of endodontically treated maxillary premolars with varying ferrule heights and post numbers: A laboratory study.
J Prosthodont
January 2025
Department of Restorative Dental Science, College of Dentistry, University of Ha'il, Ha'il, Saudi Arabia.
Purpose: To investigate how varying ferrule heights and the number of glass fiber posts affect fracture resistance and behavior of endodontically treated maxillary first premolars with substantial loss of tooth structure.
Materials And Methods: Twenty-four extracted endodontically treated human maxillary first premolars were divided into three groups (n = 8) based on ferrule height and post number. The groups were as follows: premolars of 2 mm ferrule height that were restored with single posts (control group), premolars of 0.
Microbial community analysis of supragingival plaque in patients with fixed prostheses.
J Prosthet Dent
January 2025
Associate Professor, Department of Stomatology, The Fifth Affiliated Hospital of Sun Yat-sen University, Xiangzhou, Zhuhai City, Guangdong, PR China. Electronic address:
Statement Of Problem: Harmony between prostheses and periodontal tissues is essential. The presence of a fixed prosthesis has been reported to increase the risk of periodontal lesion onset in abutment teeth and to affect longevity. However, studies comparing the supragingival plaque biofilm on fixed prostheses and natural teeth are lacking.
View Article and Find Full Text PDFWant 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!