Effect of frame design on the fracture strength of a zirconia crown and porcelain faced crown

被引：6

作者：

Kuroda, Soichi ^{[1
]}

Shinya, Akikazu ^{[1
,2
]}

Gomi, Harunori ^{[1
]}

机构：

[1] Nippon Dent Univ Tokyo, Dept Crown & Bridge, Sch Life Dent Tokyo, Chiyoda Ku, 1-9-20 Fujimi, Tokyo 1028158, Japan

[2] Univ Turku, Dept Prosthet Dent & Biomat Sci, Inst Dent, Lemminkaisenkatu 2, FIN-20520 Turku, Finland

来源：

DENTAL MATERIALS JOURNAL | 2019年 / 38卷 / 02期

关键词：

CAD/CAM; Porcelain; Zirconia; Frame design; Fracture strength; LITHIUM DISILICATE CROWNS; FIXED DENTAL PROSTHESES; CERAMIC CROWNS; STRESS-DISTRIBUTION; SINGLE CROWNS; MARGINAL FIT; PART II; THICKNESS; RESISTANCE; TOUGHNESS;

D O I：

10.4012/dmj.2017-218

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

In this study, we investigated the effect of frame design on the fracture strength of a zirconia crown and porcelain-faced crown, with the aim of clinically applying a zirconia crown fabricated using computer-aided design and manufacturing. The results showed that the fracture strengths were 645.9 MPa with Frame Design 1, 759.5 MPa with Frame Design 2, and 989.7 MPa with Frame Design 3, suggesting that the fracture strength improved depending upon the frame design. The above information suggests that it is necessary for the zirconia crown frame form to have an occlusal surface table where the crown design has a reduced outer diameter, instead of using the conventional form of covering the abutment tooth with a thickness of 0.5 mm.

引用

收藏

页码：323 / 328

页数：6

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