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Objectives: This retrospective study evaluated the clinical performance and long-term survival of glass-ceramic lithium disilicate all-ceramic restorations in anterior and posterior areas over a 10-year period.
Method And Materials: Following a consistent protocol over 10 years, 261 lithium disilicate crowns (IPS Empress 2, Ivoclar Vivadent), including 101 anterior (38.7%) and 160 posterior (61.3%), were cemented using an adhesive technique and observed by the clinician who prepared and luted them. The data were analyzed using the Kaplan-Meier test. The clinical evaluation adopted the California Dental Association (CDA) modified criteria after recalling all patients between January and May 2008.
Results: Six crowns failed and were replaced, 4 due to chipping and 2 due to core fracture. The overall survival rate was 95.5%.
Conclusion: In this retrospective evaluation, lithium disilicate ceramic restorations had a low clinical failure rate after up to 120 months.
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J Oral Sci
September 2025
Restorative Section, Melbourne Dental School, Melbourne University.
Purpose: To evaluate the effect of die spacer thickness on the fit and load to failure of cantilever resin-bonded fixed dental prostheses (RBFDPs).
Methods: Two identical maxillary RBFDPs with a retainer on the canine were designed to replace a lateral incisor. One design involved a closely fitting retainer with no die spacer (NDS), and the other included an 80-µm die spacer (DS).
J Prosthodont Res
September 2025
Department of Health Sciences, School of Dentistry, University of Araraquara, UNIARA, Araraquara, Sao Paulo, Brazil.
Purpose: This in vitro study evaluated the adaptation and fracture resistance of screw- and cement-retained implant-supported restorations using lithium disilicate crowns cemented onto titanium bases and universal abutments of different heights.
Methods: Thirty crowns were designed, milled, and divided into three groups: TBA (titanium base abutment - 4.7-mm-height and 4.
Int J Dent
August 2025
Department of Prosthodontics, The University of Iowa College of Dentistry and Dental Clinics, Iowa City 52242, Iowa, USA.
This study investigates light transmission through five types of computer-aided design/computer-aided manufacturing (CAD/CAM) lithium disilicate ceramics, varying in thickness (0.50, 1.00, and 1.
View Article and Find Full Text PDFJ Prosthodont Res
September 2025
Department of Prosthodontics, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University, Düsseldorf, Germany.
Purpose: To investigate the effect of ceramic material (lithium disilicate, LDS vs. composition-gradient multilayered zirconia [4Y-PSZ and 5-PSZ], Z) and ceramic layer thickness (0.5 mm, 1.
View Article and Find Full Text PDFJ Prosthet Dent
September 2025
Associate Professor, Division of Restorative Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC.
Statement Of Problem: The effect of food-simulating solvents (FSSs) on the staining susceptibility and mechanical properties of partially and fully crystallized lithium disilicate glass-ceramics (LDGCs) remains unclear.
Purpose: The purpose of this in vitro study was to evaluate the color change, hardness, flexural strength, and reliability of LDGCs exposed to FSSs.
Material And Methods: Two machinable LDGCs, partially crystallized (IPS e.