Computer-aided design-computer-aided manufacturing (CAD-CAM) systems have been widely used as a fabrication method for restorations because of their high efficiency and accuracy, which significantly reduces fabrication time. However, molars with insufficient clearance or short clinical crown lengths require retention holes or grooves on the preparation, making it difficult to replicate the shapes with the CAM milling system. In these cases, restorations using the lost-wax method are selected. This article focuses on one-piece endodontic crowns (endocrowns) fabricated with a CAD-CAM system (CAD-CAM endocrowns), in which their posts and crowns are integrated. Articles from July 2012 to August 2023 were searched in PubMed with the keyword "endocrown". This review discusses the application of CAD-CAM endocrowns to molars from the viewpoint of model experiment (fracture resistance, adaptation) and clinical research. This technique, which allows margins and internal gaps to be set within the clinically acceptable range, is reported to be an effective way of restoring molars with high survival rates in clinical research.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10830429 | PMC |
http://dx.doi.org/10.1016/j.jdsr.2023.12.005 | DOI Listing |
Cureus
November 2024
Dentistry, College of Dentistry, King Saud University, Riyadh, SAU.
Endodontically treated molar rehabilitation is still challenging. Molars lose their mechanical properties after endodontic therapy. As a result of the pulp and surrounding dentin tissues being removed, they actually became brittle.
View Article and Find Full Text PDFPurpose: The aim of this prospective clinical study was to evaluate the 12 and 24-month clinical results of overlay and one-piece endodontic crown restorations applied with additively manufactured 3D printed permanent ceramic-filled resin (PCR) according to the Modified US Public Health Service (USPHS) criteria.
Materials And Methods: A total of 33 indirect restorations (16 overlay, 17 endocrown) (4 premolar, 29 molar) produced using PCR (Formlabs) were applied to 30 patients by a single dentist. The restorations were evaluated according to the modified USPHS criteria at baseline (7 days), 12 and 24 months times by two independent evaluators.
J Prosthet Dent
October 2024
Professor, Clinic of Masticatory Disorders and Dental Biomaterials, Center for Dental Medicine, University of Zürich, Zürich, Switzerland. Electronic address:
Statement Of Problem: The outcome of posterior nonvital teeth depends not only on endodontic factors but also on the effectiveness of the restoration. The growing trend in minimally invasive dentistry has led to increasing interest in 1-piece endodontic crowns as an alternative restoration. Nevertheless, their indications and longevity lack extensive exploration, thereby limiting their widespread acceptance in dental practice.
View Article and Find Full Text PDFHua Xi Kou Qiang Yi Xue Za Zhi
August 2024
Dept. of Prosthodontics, School of Stomatology, Fujian Medical University, Fuzhou 361990, China.
J Prosthet Dent
September 2024
Associate Professor, Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland; Associate Professor, Department of Restorative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland; and Adjunct Professor, Division of Restorative and Prosthetic Dentistry, The Ohio State University, Columbus, Ohio.
Statement Of Problem: The impact of various preparation designs on the fracture resistance and fracture type of mandibular premolars restored with 3 dimensionally (3D) printed, 1-piece endodontic crowns remains unclear.
Purpose: The purpose of this study was to investigate the effect of different preparation designs on the fracture resistance and fracture patterns of mandibular premolars restored with 3D printed 1-piece endodontic crowns after thermal aging.
Material And Methods: Forty-five freshly extracted mandibular premolars received 3 different preparation designs: with at least 2 intact cuspal walls (2CW), with only 1 intact cuspal wall (1CW), and no cuspal wall present (NoCW).
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!