Extended glaze firing on ceramics for hard machining: Crack healing, residual stresses, optical and microstructural aspects

Highlights • The effect of glaze firings on four ceramics for hard machining was investigated. • The same cracks were examined, before and after firing, to verify the healing process. • Extended glaze (EG) provided greater crack healing than conventional glaze firing. • Three of the tested ceramics...

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Bibliographic Details
Published in:Dental materials 2017-02, Vol.33 (2), p.226-240
Main Authors: Aurélio, Iana L, Dorneles, Lucio S, May, Liliana G
Format: Article
Language:English
Subjects:
Advanced Basic Science
CAD/CAM
Ceramics
Color
Compressive properties
Crystal defects
Crystal structure
Dental Porcelain
Dentistry
Diffraction
Electron microscopy
Firing
Glass ceramic
Hardness
Healing
Heat treatment
Indentation
Lithium
Machining
Materials Testing
Microstructure
Microstructure analysis
Opacity
Optical properties
Potassium aluminum silicates
Prefabrication
Scanning electron microscopy
Sectioning
Sintering
Stability analysis
Stress state
Stresses
Surface Properties
X-Ray Diffraction
Zirconia
Zirconium dioxide
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Summary:Highlights • The effect of glaze firings on four ceramics for hard machining was investigated. • The same cracks were examined, before and after firing, to verify the healing process. • Extended glaze (EG) provided greater crack healing than conventional glaze firing. • Three of the tested ceramics presented acceptable color changes after EG.
ISSN:0109-5641
1879-0097
DOI:10.1016/j.dental.2016.12.002