Purpose: The aim of this retrospective study was to investigate the longevity and clinical performance of fixed partial dentures (FPD) 30, 20, and 10 years after insertion.
Materials And Methods: A total of 289 FPDs were inserted in 1966/67, 1976/77, and 1986/87. For patients with FPDs presumably still in function, an evaluation according to the CDA criteria was made.
Results: For 64 of the FPDs (22%), no information was available. Seventy-nine patients with 94 FPDs (33%) were clinically examined, and 44 of the FPDs (15%) were reported to be still in function by the patients' current clinicians. The remaining 87 FPDs (30%) were considered lost to follow-up. These FPDs had either been removed for various reasons--in most cases dental caries, lost retention, or fractured abutment teeth--or the patient could not be contacted. Eighty-four percent of the FPDs inserted in 1966/67 were still in function after 20 years, compared to 64% of those inserted in 1976/77. Apart from an increase in wear and discoloration, the oldest FPDs had excellent marginal fit and anatomic shape.
Conclusion: The survival rate of 30-year-old FPDs was high; 53% remained in function after 30 years. Based on the CDA criteria, 78% of the restorations were rated satisfactory in all subgroups. The FPDs placed in 1966/67 obtained the highest ratings in color, anatomy, and margin integrity.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Load-bearing capacity of screw-retained fixed dental prostheses made of monolithic zirconia on different abutment designs and abutment-free implant connection.
J Dent
February 2025
Senior Research and Teaching Assistant, Clinic of Reconstructive Dentistry, Center for Dental Medicine, University of Zurich, Plattenstrasse 11, Zurich 8032, Switzerland. Electronic address:
Objectives: A new abutment-free implant connection allows for direct screwing of FDPs on implants to avoid complications caused by cement rests or screw loosening, which may affect to screw torque and load distribution. The objective of this study was to test the initial (Fi) and final failure (Ff) loads and torque changes of abutment-free monolithic zirconia CAD-CAM fixed dental prostheses (FDPs) compared to titanium FDPs on different abutment designs.
Methods: Three-unit screw-retained FDPs (n = 50) on two implants (n = 100) were divided into groups (n = 10) based on the implant-abutment connection and material of the supra-structure: (1) abutment-free monolithic CAD-CAM zirconia FDP (Abut-free-Zr), (2) abutment-free veneered titanium FDPs (Abut-free-Ti), (3) monolithic zirconia FDPs with titanium base abutments (Zr-Ti-Base), (4) monolithic zirconia FDPs on multi-unit abutments (Zr-MU), (5) veneered titanium FDP on multi-unit abutments (Ti-MU).
A Review of Transparent Conducting Films (TCFs): Prospective ITO and AZO Deposition Methods and Applications.
Nanomaterials (Basel)
December 2024
Division of Physics, Engineering, Mathematics and Computer Sciences and Optical Science Center for Applied Research, Delaware State University, Dover, DE 19901, USA.
This study offers a comprehensive summary of the current states as well as potential future directions of transparent conducting oxides (TCOs), particularly tin-doped indium oxide (ITO), the most readily accessible TCO on the market. Solar cells, flat panel displays (FPDs), liquid crystal displays (LCDs), antireflection (AR) coatings for airbus windows, photovoltaic and optoelectronic devices, transparent p-n junction diodes, etc. are a few of the best uses for this material.
View Article and Find Full Text PDFPatients' Preferences for the Treatment of a Single Missing Tooth in China: A Discrete Choice Experiment.
Patient Prefer Adherence
December 2024
Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong, People's Republic of China.
Article Synopsis
- - The study explores preferences for restoring a single missing tooth using two main options: tooth-supported fixed partial dentures (FPDs) and implant-supported single crowns (ISCs) through a discrete choice experiment (DCE).
- - Participants aged 18-60 completed a questionnaire focusing on five important treatment attributes: procedure, time, cost, five-year survival rate, and five-year complication rate; the analysis indicated that complication rates were deemed most important.
- - Results showed participants were willing to pay significantly more for reduced complication rates, highlighting the importance of addressing this factor in dental treatments and improving communication between patients and dentists regarding their preferences.
The Accuracy of 3D-Printed Fixed Dental Restorations.
J Esthet Restor Dent
December 2024
Department of Prosthodontics, University Hospital Berlin Charité, Berlin, Germany.
Objective: The aim of this in vitro study was to evaluate the accuracy of resin-based fixed dental restorations, namely veneers, single crowns, and four-unit fixed partial dental prosthesis (FPDs), using two different 3D printing technologies and polymer-based materials.
Materials And Methods: A standard maxillary polyurethane jaw model containing prepared teeth was scanned using an intraoral scanner. The generated STL data were used to design the restorations virtually using CAD software.
First linac-mounted photon counting detector for image guided radiotherapy: Planar image quality characterization.
Med Phys
November 2024
Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW, Australia.
Article Synopsis
- The study explores the development of a linac-mounted photon-counting detector (PCD) for image-guided radiotherapy (IGRT) that could significantly enhance imaging by improving soft-tissue contrast and spatial resolution compared to traditional flat panel detectors (FPDs).
- Researchers characterized the image quality of the PCD, focusing on parameters like 2D spatial resolution, noise, and contrast, by comparing it with an FPD using various imaging techniques and calibration methods.
- Results showed that the PCD provides a linear energy calibration and better raw contrast in images, suggesting its potential for improved tumor delineation in radiation therapy applications.
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!