TY - JOUR
T1 - The effective design of zirconia coping on titanium base in dental implant superstructure
AU - Mieda, Maiko
AU - Atsuta, Ikiru
AU - Matsushita, Yasuyuki
AU - Morita, Takehiro
AU - Ayukawa, Yasunori
AU - Tsukiyama, Yoshihiro
AU - Sawae, Yoshinori
AU - Koyano, Kiyoshi
N1 - Funding Information:
This work was supported by a grant-in-aid for Scientific Research (to I. Atsuta) from the Ministry of Education, Science, Sports, Culture, and Technology of Japan.
Publisher Copyright:
© 2018, Japanese Society for Dental Materials and Devices. All rights reserved.
PY - 2018
Y1 - 2018
N2 - Zirconia exhibits good tissue compatibility and nontoxicity, making it a widely used esthetic replacement material for implant abutments. To avoid abutment-fracture, the parts composed of zirconia with a bonded metal component connected to the implant can be used. The purpose of this study was to design titanium and zirconia components with high fracture resistance at the zirconia component’s edge line. Three edge line designs of the titanium base and zirconia sleeve were made: chamfer, shoulder, and back-taper. To assess the strength of the abutment design, static loads were applied vertically and 30 degrees from the vertical axis. A test of tensile strength was also performed after chewing simulation. Conventional zirconia components mounted on a chamfer-type titanium base showed significantly lower fracture resistance than shoulder and back-taper types. This study suggests that to improve the durability of zirconia abutments with a titanium base, a back-tapered edge design is recommended.
AB - Zirconia exhibits good tissue compatibility and nontoxicity, making it a widely used esthetic replacement material for implant abutments. To avoid abutment-fracture, the parts composed of zirconia with a bonded metal component connected to the implant can be used. The purpose of this study was to design titanium and zirconia components with high fracture resistance at the zirconia component’s edge line. Three edge line designs of the titanium base and zirconia sleeve were made: chamfer, shoulder, and back-taper. To assess the strength of the abutment design, static loads were applied vertically and 30 degrees from the vertical axis. A test of tensile strength was also performed after chewing simulation. Conventional zirconia components mounted on a chamfer-type titanium base showed significantly lower fracture resistance than shoulder and back-taper types. This study suggests that to improve the durability of zirconia abutments with a titanium base, a back-tapered edge design is recommended.
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U2 - 10.4012/dmj.2017-022
DO - 10.4012/dmj.2017-022
M3 - Article
C2 - 29081448
AN - SCOPUS:85044712652
SN - 0287-4547
VL - 37
SP - 237
EP - 243
JO - Dental Materials Journal
JF - Dental Materials Journal
IS - 2
M1 - dmj/2017-022
ER -