ID | 61301 |
フルテキストURL | |
著者 |
Maruo, Yukinori
Department of Occlusion and Removable Prosthodontics, Okayama University
ORCID
Kaken ID
publons
researchmap
Yoshihara, Kumiko
National Institute of Advanced Industrial Science and Technology, Health Research Institute
Nishigawa, Goro
Department of Occlusion and Removable Prosthodontics
Nagaoka, Noriyuki
Advanced Research Center for Oral and Craniofacial Sciences, Okayama University
Minagi, Shogo
Advanced Research Center for Oral and Craniofacial Sciences, Okayama University
ORCID
Kaken ID
publons
researchmap
|
抄録 | This study investigated the mechanical properties, bond ability, and crystallographic forms of different sites in a highly translucent, multi-layered zirconia disk. Flexural properties, bond ability to resin cement, and phase composition were investigated at three sites of a highly translucent, multi-layered zirconia disk: incisal, middle, and cervical. Flexural strength (FS) and flexural modulus (FM) were measured with static three-point flexural test. Shear bond strength (SB) to resin cement was measured after 24 h storage (37°C). Phase composition under mechanical stress was analyzed using X-ray diffraction. Without air abrasion, FS at the incisal site yielded the lowest value and was significantly lower than the middle and cervical sites. Air abrasion lowered the FS of each site. FM at the incisal site without air abrasion showed the significantly lowest value, and air abrasion increased its FM value. At the middle and cervical sites, their FM values were higher than the incisal site but were not significantly affected by air abrasion. SB value did not show significant differences among the sites. After sintering, cubic zirconia was detected at each site. Rhombohedral phase transformation occurred after mirror polishing. In highly translucent, multi-layered zirconia which was mainly composed of cubic zirconia, rhombohedral phase transformation occurred under mechanical stress and resulted in weakened mechanical properties.
|
キーワード | Flexural strength
bond strength
crystallographic phase
zirconia
|
発行日 | 2020-10-09
|
出版物タイトル |
Journal of Applied Biomaterials and Functional Materials
|
巻 | 18巻
|
出版者 | SAGE Publications
|
開始ページ | 2280800020942717
|
ISSN | 2280-8000
|
資料タイプ |
学術雑誌論文
|
言語 |
英語
|
OAI-PMH Set |
岡山大学
|
著作権者 | © Authors
|
論文のバージョン | publisher
|
PubMed ID | |
DOI | |
Web of Science KeyUT | |
関連URL | isVersionOf https://doi.org/10.1177/2280800020942717
|
ライセンス | https://creativecommons.org/licenses/by-nc/4.0/
|
助成機関名 |
日本学術振興会
|
助成番号 | 18K09681
|