TY - JOUR
T1 - Preparation and properties of cordierite glass-ceramic as veneer porcelain for silicon nitride dental ceramics
AU - Jiang, Lei
AU - Wang, Tong
AU - Yin, Shuang
AU - Luo, Tao
AU - Fang, Xia
AU - Yuan, Jun
AU - Tang, Xuehua
AU - Wang, Yang
AU - Li, Quan
AU - Yang, Jian
N1 - Publisher Copyright:
© 2022
PY - 2022/10
Y1 - 2022/10
N2 - To develop thermally matched veneer porcelain for silicon nitride as potential dental ceramics, cordierite glass-ceramics with TiO2 and ZrO2 as nucleating agents and CaCO3 as sintering aids were prepared by sintering method. The cordierite glass-ceramics prepared by sintering and crystallization at 1100 °C for 1 h show the best comprehensive properties and meet the ISO 6872:2015 with flexural strength of 95 MPa, fracture toughness of 1.56 MPa·m1/2, Vickers hardness of 5.06 GPa, coefficient of thermal expansion of 2.99 × 10−6/°C and chemical solubility of 60 μg/cm2, respectively, and no cytotoxicity. The chromaticity values L*, a*, b* were 93.84, − 0.18 and 7.10 respectively, which still needs to be slightly adjusted to fall into the range of natural tooth. Interface bonding of cordierite glass-ceramics/Si3N4 ceramics was preliminarily explored by powder coating, sintering and shear strength tests, which exhibits a bonding strength up to 7.75 MPa and a hybrid mode of cohesive and adhesive failure.
AB - To develop thermally matched veneer porcelain for silicon nitride as potential dental ceramics, cordierite glass-ceramics with TiO2 and ZrO2 as nucleating agents and CaCO3 as sintering aids were prepared by sintering method. The cordierite glass-ceramics prepared by sintering and crystallization at 1100 °C for 1 h show the best comprehensive properties and meet the ISO 6872:2015 with flexural strength of 95 MPa, fracture toughness of 1.56 MPa·m1/2, Vickers hardness of 5.06 GPa, coefficient of thermal expansion of 2.99 × 10−6/°C and chemical solubility of 60 μg/cm2, respectively, and no cytotoxicity. The chromaticity values L*, a*, b* were 93.84, − 0.18 and 7.10 respectively, which still needs to be slightly adjusted to fall into the range of natural tooth. Interface bonding of cordierite glass-ceramics/Si3N4 ceramics was preliminarily explored by powder coating, sintering and shear strength tests, which exhibits a bonding strength up to 7.75 MPa and a hybrid mode of cohesive and adhesive failure.
KW - Coefficient of thermal expansion
KW - Cordierite
KW - Glass-ceramics
KW - Silicon nitride
KW - Veneer porcelain
UR - http://www.scopus.com/inward/record.url?scp=85133312958&partnerID=8YFLogxK
U2 - 10.1016/j.jeurceramsoc.2022.06.072
DO - 10.1016/j.jeurceramsoc.2022.06.072
M3 - 文章
AN - SCOPUS:85133312958
SN - 0955-2219
VL - 42
SP - 6182
EP - 6191
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 13
ER -
