Fracture toughness of chairside CAD/CAM materials – Alternative loading approach for compact tension test

Highlights • Fracture toughness ( KIC ) of a group of CAD/CAM nonmetallic blocks was measured. • Two were glass-ceramic-based, 2 were resin-composite-based, and one feldspathic porcelain, testing both glass-ceramic materials before and after firing. • An alternative loading approach was followed, us...

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Bibliographic Details
Published inDental materials Vol. 32; no. 7; pp. 847 - 852
Main Authors Badawy, Rania, El-Mowafy, Omar, Tam, Laura E
Format Journal Article
LanguageEnglish
Published England Elsevier Ltd 01.07.2016
Subjects
Advanced Basic Science
Alternative loading
Analysis of variance
CAD/CAM blocks
Ceramic
Compact tension
Composite
Computer-Aided Design
Confidence intervals
Crowns
Dental materials
Dentin
Dentistry
Diamonds
Fracture toughness
Humans
Materials Testing
Notches
CAD/CAM blocks
Ceramic
Composite
Alternative loading
Fracture toughness
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Summary:Highlights • Fracture toughness ( KIC ) of a group of CAD/CAM nonmetallic blocks was measured. • Two were glass-ceramic-based, 2 were resin-composite-based, and one feldspathic porcelain, testing both glass-ceramic materials before and after firing. • An alternative loading approach was followed, using a modified test arrangement that was quite easy to follow, with a simplified specimen preparation. • ANOVA revealed significantly different mean KIC among materials, with the fired specimens revealing significantly highest values.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0109-5641
1879-0097
DOI:10.1016/j.dental.2016.03.003