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Loaded hydroxylapatite-coated and grit-blasted titanium implants in dogs
The International Journal of Oral & Maxillofacial Implants
|January 1, 1989
Summary
Hydroxylapatite-coated (HAC) dental implants showed enhanced bone apposition compared to grit-blasted titanium (GT) implants in canine mandibles. Both implant types demonstrated similar soft-tissue health and crestal bone stability over ten months.
Area of Science:
- Biomaterials Science
- Dental Implantology
- Comparative Anatomy
Background:
- Titanium dental implants are widely used for tooth replacement.
- Surface modifications aim to improve osseointegration and long-term stability.
- Hydroxylapatite coating (HAC) and grit-blasting (GT) are common surface treatments.
Purpose of the Study:
- To compare the bone response of canine mandibular bone to loaded hydroxylapatite-coated (HAC) and grit-blasted titanium (GT) endosseous dental implants.
- To evaluate soft-tissue response and bone apposition around these implants over time.
Main Methods:
- Four dogs underwent partial edentulation in the maxilla and mandible.
- Two freestanding prostheses-supported implants (HAC and GT) were placed in each quadrant.
- Implants were evaluated at 1 and 10 months post-loading for soft-tissue pocket depth and bone levels.
Main Results:
- No statistically significant differences in soft-tissue pocket depths were observed between HAC and GT implants.
- Crestal bone loss was not significantly different between the two implant groups.
- HAC implants exhibited a statistically significant greater amount of bone apposition on their axial and apical surfaces compared to GT implants.
Conclusions:
- Hydroxylapatite-coated implants promote superior bone apposition compared to grit-blasted titanium implants in the canine mandible.
- Both implant surfaces provide comparable soft-tissue integration and crestal bone stability.
- HAC surface treatment may enhance osseointegration beyond initial stability.