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Peripheral quantitative computer tomographic, histomorphometric, and removal torque analyses of two different
Daniel Shin1, Steven B Blanchard, Michio Ito
1Department of Periodontics, Indiana University School of Dentistry, Indianapolis, IN 46202, USA.
Clinical Oral Implants Research
|September 14, 2010
Summary
Zirconia implants showed less bone remodeling activity compared to titanium implants. Both implant types demonstrated similar bone-to-implant contact and removal torque, indicating comparable osseointegration.
Area of Science:
- Biomaterials Science
- Orthopedic Research
- Dental Implantology
Background:
- Dental implants are crucial for tooth replacement.
- Titanium and zirconia are common implant materials.
- Understanding their bone response is vital for clinical success.
Purpose of the Study:
- To compare bone tissue response to zirconia and titanium implants.
- To analyze the implant-bone interface and periosteal bone.
- To quantitatively measure peri-implant bone mineral density using pQCT.
Main Methods:
- Ten titanium and zirconia implants were placed in rabbit tibiae.
- Bone-to-implant contact (BIC), bone area (BA), mineralized surface (MS), and removal torque (RT) were assessed.
- Peripheral quantitative computed tomography (pQCT) measured bone mineral density.
Main Results:
- No significant differences between zirconia and titanium implants in BIC, RT, and pQCT.
- Titanium group showed higher BA and MS.
- Zirconia group exhibited more calcein labels in threads, suggesting different remodeling patterns.
Conclusions:
- Zirconia implants exhibited reduced periosteal bone remodeling.
- Bone at the implant interface showed distinct density and composition compared to surrounding bone.
- Both zirconia and titanium implants achieved similar BIC and RT.
