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Effect of surface roughness and calcium phosphate coating on the implant/bone response
Author(s) -
Hayakawa Tohru,
Yoshinari Masao,
Nemoto Kimiya,
Wolke Joop G. C.,
Jansen John A.
Publication year - 2000
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1034/j.1600-0501.2000.011004296.x
Subject(s) - osseointegration , materials science , implant , coating , titanium , tibia , surface roughness , biomedical engineering , dentistry , medicine , composite material , metallurgy , surgery
The influence of surface roughness and calcium phosphate (Ca‐P) coating on the bone response of titanium implants was investigated. Four types of titanium implants, i.e. as‐machined, grit blasted, as‐machined with Ca‐P sputter coating, and grit blasted with Ca‐P sputter coating, were prepared. The Ca‐P sputter‐coating, produced by using the RF magnetron sputter technique, was rapid heat‐treated with infrared radiation at 600°C. These implants were inserted into the left and right femoral condyles and the left and right tibial diaphyses of the rabbits. After implantation periods of 2 and 12 weeks, the bone–implant interface was evaluated histologically and histomorphometrically. Histological evaluation revealed no new bone formation around different implant materials after 2 weeks of implantation. After 12 weeks, bone healing was almost completed. For both tibial and femoral implants, Ca‐P coated implants always showed a higher amount of bone contact than either of the non‐coated implants. On the other hand, surface roughness improved only the response to implants inserted into the tibial diaphysis. On the basis of these findings, we concluded that 1) deposition of a sputtered Ca‐P coating on an implant has a beneficial effect on the bone response to this implant during the healing phase, and 2) besides implant surface conditions the bone response is also determined by local implant site conditions.