Abstract
To date, there has been a lot of interest in the development of medical/dental implant materials. Many studies have been conducted in recent years on the development of composites, particularly those based on calcium phosphate bio-ceramic, because their structure is comparable to that of human bone. The aim of the study was to evaluate the bond strength between the bone and pekk implant with strontium hydroxyapatite after different periods of implantation (2, 6) weeks in rabbit tibia by push out test.60 polymer implants, 3.0 mm in diameter and 8mm in length (20 control pure PEKK, 20 composite SR HA /PEKK implant and 20 implant coating with strontium hydroxyapatite by RF magnetron sputtering. The assess surface topography was done by using Scanning electron microscope. The screws were implanted in twenty healthy adult new zeeland rabbits each tibia received three, one coated with sr ha, one composite SR HA / PEKK and third pure PEKK. Push out test was done to determine the peak force necessary to remove the implant from tibia bone after different periods (2 and 6 weeks) of implantation.
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