2024-03-29T01:46:50Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00001629
2022-12-15T03:34:21Z
432:477:478
453:454
Morphological and Chemical Characterizations of the Interface of a Hydroxyapatite-coated Implant
Mimura, Kiichirou
Watanabe, Kouichi
Okawa, Seigo
Kobayashi, Masayoshi
Miyakawa, Osamu
日本歯科理工学会
本文データは学協会の許諾に基づきCiNiiから複製したものである
Hydroxyapatite-coated implant
Interface
Bonding
The present study aimed at morphological and chemical characterization of the coating-substrate interface of a commercially available dental implant coated with plasma-sprayed hydroxyapatite (HA). For this purpose, elements in the chemically and mechanically exposed substrate surfaces were analyzed by EPMA and XPS. A thin titanium oxide film containing Ca and P was found at the interface. When the implant was subjected to mechanical stress, a mixed mode of cohesive and inter facial fractures occurred. The cohesive fracture was due to separation of the oxide film from the substrate, while the inter facial fracture was due to exfoliation of the coating from the oxide film bonded to the substrate. Analysis showed diffusion of Ca into the metal substrate, hence indicating the presence of chemical bond at the interface. However, mechanical interlocking seemed to play the major role in the inter facial bond.
日本歯科理工学会
2004-09
eng
journal article
VoR
http://hdl.handle.net/10191/18163
https://niigata-u.repo.nii.ac.jp/records/1629
http://doi.org/10.4012/dmj.23.353
http://ci.nii.ac.jp/naid/110002983577
AA10443149
0287-4547
Dental Materials Journal
23
3
353
360
https://niigata-u.repo.nii.ac.jp/record/1629/files/23_3_353-360.pdf
application/pdf
3.1 MB
2019-07-29