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A mechanical evaluation of TiO 2 ‐gritblasted and Ca‐P magnetron sputter coated implants placed into the trabecular bone of the goat: part 1
Author(s) -
Vercaigne Suzy,
Wolke Joop G. C.,
Naert Ignace,
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.1600-0501.2000.011004305.x
Subject(s) - materials science , implant , titanium , scanning electron microscope , biomedical engineering , coating , fixation (population genetics) , dentistry , composite material , medicine , surgery , metallurgy , population , environmental health
The influence of Ca‐P magnetron sputter coated implants on the mechanical anchorage was evaluated in a goat model. Therefore, uncoated and coated screw designed commercially pure titanium TiO 2 ‐blasted implants were inserted into the trabecular bone of the femoral condyles of 12 goats. The thicknesses of the coatings were 0.1 μm (CaP‐0.1), 1.0 μm (CaP‐1) and 4.0 μm (CaP‐4). In addition, uncoated TiO 2 ‐blasted implants (Ti) were used as control. Evaluation of the interface strength and appearance, using torque test and scanning electron microscopy, was done at implantation periods of 6 and 12 weeks. Although, especially at 6 weeks of implantation, the Ca‐P coated implants showed higher failure torque values than the TiO 2 blasted implants, the observed differences for type of implant and evaluation period were not significant ( P >0.1). SEM evaluation showed that all implants with failure values of more than 100 N conducted bone growth into their screw threads. In addition, we observed that the fracture plane for the CaP‐4 implants was situated at the coating–implant interface or inside the coating. For the CaP‐1 and CaP‐0.1 the fracture line could not be determined definitely. For the Ti implants, the fracture torque testing resulted in failure at the bone–implant interface. Therefore, we conclude that all implants resulted in a good bonding strength with the surrounding bone. The sputtered Ca‐P coatings seemed to improve the initial fixation of the TiO 2 blasted implants.