Effects of NSAIDs and hydroxyapatite coating on osseointegration

Purpose: The aim of our study is to investigate the bone ongrowth of two different alternative surfaces and the effect of nonsteroidal anti-inflammatory drugs (NSAIDs) on osseointegration. Methods: Hips of 40 New Zealand white rabbits were operated bilaterally. Hydroxyapatite (HA)-coated titanium rods were implanted into the right femur, and grit-blasted titanium rods were implanted into the left femur. They were divided into three groups. At the end of 8 weeks, both femora of the rabbits were removed and investigated biomechanically and histologically. Results: HA-coated implants had a significantly better failure load and “percentage of bone–implant contact” than grit-blasted implants. There was no significant difference between the medication groups as a result of the biomechanical and histologic investigations. Conclusions: Our results indicate that NSAIDs did not have any negative effect on the osseointegration. HA-coated implants may provide more tensile strength and greater bone–implant contact rate in comparison with grit-blasted implants.

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