Relating Type of Mold Materials to Crystal Morphology and Properties of Glass-ceramics with YSZ Additions as a Dental Material

被引：0

作者：

Angkulpipat, Sukanda ^{[1
]}

Srichumpong, Thapanee ^{[1
]}

Prasertwong, Sahadsaya ^{[1
]}

Meechoowas, Ekarat ^{[2
]}

Sirinukunwattana, Krongkarn ^{[2
]}

Heness, Greg ^{[1
,3
]}

Rosa, Roberto ^{[4
]}

Suputtamongkol, Kallaya ^{[5
]}

Chaysuwan, Duangrudee ^{[1
]}

机构：

[1] Kasetsart Univ, Fac Engn, Dept Mat Engn, Bangkok 10900, Thailand

[2] Minist Higher Educ Sci Res & Innovat, Dept Sci Serv, Bangkok 10400, Thailand

[3] Univ Technol Sydney, UTS Insearch, POB K1085, Haymarket, NSW 1240, Australia

[4] Univ Modena & Reggio Emilia, Dept Engn Enzo Ferrari, I-41125 Modena, Italy

[5] Mahidol Univ, Fac Dent, Dept Prosthodont, Bangkok 10400, Thailand

来源：

CHIANG MAI JOURNAL OF SCIENCE | 2020年 / 47卷 / 06期

关键词：

glass-ceramics; yttria-stabilized zirconia; mold materials; crystal morphology; MECHANICAL-PROPERTIES; CRYSTALLIZATION; MICROSTRUCTURE; STRENGTH;

D O I：

暂无

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

YSZ was added to glass frit in order to improve properties of the glass-ceramic dental materials by casting into a graphite mold and a cast iron mold and then crystallized via heat treatment. XRD results presented the similar crystalline phases of phlogopite-calcium mica and tetragonal zirconia in both molds. Microstructures by SEM showed the different crystal morphology due to casting molds. The slow cooling of graphite mold produced the equiaxed crystals whereas the fast cooling of cast iron mold promoted rod-like, and YSZ addition increased the number of crystals. The properties depended on the crystal morphology and crystallinity. The 5 wt% YSZ added glass-ceramic from graphite mold developed the equiaxed crystals to present the desirable properties of 147.15 MPa, flexural strength, 251.80 mu g/cm(2), chemical solubility and 9.26 x 10-6/degrees C CTE. The results were accepted by ISO 6872:2015 (Dentistry-Ceramic Materials) in type II class 2b as a partially and fully covered single substructure and matched with commercial porcelains.

引用

页码：1283 / 1296

页数：14

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