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Published on: April 14, 2026
Sandblasted titanium osteointegration in young, aged and ovariectomized sheep
V Borsari1, M Fini, G Giavaresi
1Experimental Surgery Department, Research Institute Codivilla-Putti, Rizzoli Orthopedic Institute, Bologna, Italy.
The International Journal of Artificial Organs
|March 23, 2007
Summary
Estrogen deficiency significantly reduces the osteointegration of Sandblasted Titanium (Ti/SA) implants in sheep bone. Aging also impacts implant success, highlighting the need for strategies to improve bone quality in patients.
Area of Science:
- Biomaterials Science
- Orthopedic Research
- Skeletal Biology
Background:
- Osteointegration of dental implants is crucial for treatment success.
- Aging and estrogen deficiency are known risk factors for reduced bone quality and potential implant complications.
- Sandblasted Titanium (Ti/SA) is a common implant material, but its performance in compromised bone states requires further investigation.
Purpose of the Study:
- To investigate the impact of aging and estrogen deficiency on the osteointegration of Ti/SA implants.
- To compare implant osseointegration in young, aged, and ovariectomized (OVX) sheep models.
- To assess the influence of bone quality on the biological response to Ti/SA implants.
Main Methods:
- Ti/SA rods were implanted into the cortical and trabecular bone of young, aged, and OVX sheep.
- Transiliac biopsies were used to characterize host bone quality.
- Osteointegration rates were evaluated histomorphometrically.
- Pushout tests were performed on implants in cortical bone to assess mechanical stability.
Main Results:
- A progressive rarefaction of trabecular bone was observed in aged and OVX sheep compared to young controls.
- Estrogen deficiency (OVX) led to a significant reduction in Ti/SA implant osteointegration in both cortical and trabecular bone.
- A minor reduction in osteointegration was noted in aged animals, with pushout tests confirming reduced mechanical integration in cortical bone.
- Bone quality directly affected the biological response to Ti/SA implants.
Conclusions:
- Estrogen deficiency markedly impairs the osteointegration of Ti/SA implants.
- While aging also affects implant integration, the impact of estrogen deficiency is more pronounced.
- Bone quality is a critical factor influencing implant success, necessitating strategies to enhance osteogenic properties in patients with compromised bone, such as those with osteoporosis.
