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Effect of water content on the mechanical strength of dental porcelain

Authors
 Yong-Keun Lee  ;  Hye-Yang Park  ;  Keun-Woo Lee  ;  Kyoung-Nam Kim  ;  June-Sung Shim 
Citation
 JOURNAL OF NON-CRYSTALLINE SOLIDS, Vol.349(1) : 200-204, 2004 
Journal Title
 JOURNAL OF NON-CRYSTALLINE SOLIDS 
ISSN
 0022-3093 
Issue Date
2004
Abstract
In this study, we measured the mechanical strength and fracture toughness of feldspathic dental porcelains with different water contents. The mechanical strength of the dental porcelain was measured using a three-point bending test; the fracture toughness of the dental porcelain was measured by a Vickers indentation method. An increased water content was found to decrease both the strength and toughness. This is probably due to easier crack formation or perhaps to a slightly higher crystallinity of the leucite material. We expected and found that it was necessary to study this phenomenon to overcome the failure of feldspathic dental porcelains during refiring after a temporary cementation in the mouth.
Full Text
http://www.sciencedirect.com/science/article/pii/S0022309304007768
DOI
10.1016/j.jnoncrysol.2004.08.188
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
Yonsei Authors
Shim, June Sung(심준성) ORCID logo https://orcid.org/0000-0003-1428-0122
Lee, Keun Woo(이근우) ORCID logo https://orcid.org/0000-0002-3153-190X
Lee, Yong Keun(이용근)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/111591
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