Optical and Mechanical Properties of New Ceramic CAD/CAM Materials

Author:

Reid DA1,Matis JI2,Lien W3,Raimondi CJ4,Arnason SC5,DuVall NB6,Vandewalle KS7

Affiliation:

1. Daniel A Reid, DMD, MS, Capt, USAF, DC, deputy program director, Advanced Education in General Dentistry Residency, Eglin AFB, FL 32542; Uniformed Services University of the Health Sciences, Bethesda, MD, USA

2. Jeremy I. Matis, DDS, MS, Maj, USAF, DC, Chief of Dental Services, Grand Forks AFB, North Dakota; Uniformed Services University of the Health Sciences, Bethesda, MD, USA

3. Wen Lien, DMD, MS, MS, Col, USAF, DC, director, Dental Materials Research, USAF Dental Research and Consultation Service, Joint Base San Antonio - Fort Sam Houston, TX, USA; Uniformed Services University of the Health Sciences, Bethesda, MD, USA

4. Christopher J Raimondi, DDS, MS, MS, Lt Col, USAF, DC, co-director, Dental Materials Research, USAF Dental Research and Consultation Service, Joint Base San Antonio - Fort Sam Houston, TX, USA; Uniformed Services University of the Health Sciences, Bethesda, MD, USA

5. Stephen C Arnason, DDS, MS, Maj, USAF, DC, program director, Advanced Education in General Dentistry Residency, Travis AFB, CA, USA; Uniformed Services University of the Health Sciences, Bethesda, MD, USA

6. Nicholas B DuVall, DDS, MS, Col, USAF, DC, squadron commander, Dental Clinic Offutt AFB, NE, USA; Uniformed Services University of the Health Sciences, Bethesda, MD, USA

7. *Kraig S Vandewalle, DDS, MS, Col (ret), USAF, DC, Air Force consultant, Dental Research, Advanced Education in General Dentistry Residency, AF Postgraduate Dental School, Joint Base San Antonio - Lackland, TX, USA; Uniformed Services University of the Health Sciences, Bethesda, MD, USA

Abstract

SUMMARY Objective: The purpose of this study was to compare the optical and mechanical properties of newer ceramic CAD/CAM materials to more established materials on the market. Methods and Materials: The following ceramic materials were tested: lithium disilicate/lithium-aluminum silicate (Tessera, Dentsply/Sirona), lithium disilicate (Initial LiSi Block, GC), IPS e.max CAD, Ivoclar Vivadent), and 4Y polycrystalline stabilized zirconia (IPS e.max ZirCAD MT, Ivoclar Vivadent; Katana STML, Kuraray; YZ ST, VITA). Optical properties (translucency, opalescence) were determined using a dental spectrophotometer on 0.5-, 1.0-, 1.5-, or 2.0-mm specimens. Mechanical properties (flexural strength, flexural modulus, flexural fatigue strength, Weibull modulus, and characteristic strength) were determined with beams undergoing 3-point bend testing. The data were analyzed with multiple analyses of variance and Tukey's post hoc tests (α=0.05). Results: Significant differences were found between groups based on type of ceramic or property (p<0.05). Conclusions: In general, the lithium disilicate based-ceramic materials had greater optical properties and lower mechanical properties than the zirconia-based ceramic materials.

Publisher

Operative Dentistry

Subject

General Dentistry

Reference37 articles.

1. Current status on lithium disilicate and zirconia: A narrative review;Zarone;BMC Oral Health,2019

2. CEREC Tessera, Advanced Lithium Disilicate . 2022https://www.dentsplysirona.com/en-ca/categories/restorative/cerec-tessera.html. Accessed 28 June 2022.

3. GC Initial LiSi Block . https://www.gcamerica.com/products/digital/gc_initial_lisi_block. Accessed 7 July 2022.

4. Dental ceramics: What is this stuff anyway?;Kelly;Journal of the American Dental Association,2008

5. Microstructural considerations for novel lithium disilicate glass ceramics: A review;Phark;Journal of Esthetic and Restorative Dentistry,2022

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