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Updated: Jun 7, 2026
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An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
Published on: February 10, 2014
Crestal bone resorption around platform-switched dental implants with fine threaded neck after immediate and delayed
Friedhelm Heinemann1, Istabrak Hasan, Christian Schwahn
1Department of Prosthodontics, Gerodontology and Biomaterials, Center of Oral Health, University of Greifswald, Greifswald, Germany. friedhelmheinemann@web.de
Biomedizinische Technik. Biomedical Engineering
|October 27, 2010
Summary
This study found minimal bone loss around specialized dental implants, even with immediate loading. This implant design appears to effectively reduce bone resorption in the maxilla.
Area of Science:
- Dental Implantology
- Periodontology
- Biomaterials Science
Background:
- Bone resorption and peri-implantitis are significant challenges in dental implantology.
- Implant macrodesign is a potential factor in mitigating initial bone loss.
- Crestal bone stability is crucial for long-term dental implant success.
Purpose of the Study:
- To evaluate crestal bone loss around screw-type, tapered implants with a fine-threaded neck and platform switching design.
- To compare bone resorption rates between immediate and delayed loading protocols.
- To assess the influence of implant macrodesign on bone preservation in the maxilla.
Main Methods:
- Longitudinal study involving 147 maxillary implants in 32 patients.
- Implants featured a fine-threaded neck and platform switching design.
- Bone level changes were measured via X-rays and analyzed using a linear mixed model over a mean follow-up of 1.6 years.
Main Results:
- Negligible bone resorption observed across all groups: -0.06 mm/year (3.7mm immediate), -0.16 mm/year (3.7mm delayed), and -0.09 mm/year (4.2mm delayed).
- Mean follow-up period was 1.6 years, with a range of 0.5-3.2 years.
- The specific implant macrodesign demonstrated minimal bone resorption regardless of loading time.
Conclusions:
- The investigated implant macrodesign is associated with negligible bone resorption.
- Immediate loading is a viable and reliable option in the maxilla when specific clinical criteria are met.
- This implant design shows promise for enhancing bone stability around dental implants.
