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An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
Published on: February 10, 2014
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In vitro evaluation of different implant systems and their influence on primary stability
Osmar de Agostinho Neto1, João Victor Frazão Câmara2, Anton Schestakow3
1Faculty of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Scientific Reports
|January 9, 2026
Summary
Three dental implant milling systems showed similar primary stability and bone quality in low-density bone. Conventional drilling, osseodensification, and bone expander techniques yielded comparable results for implant insertion.
Area of Science:
- Dental Implantology
- Biomaterials Science
- Surgical Techniques
Background:
- Optimizing primary stability and bone quality is crucial for successful dental implant osseointegration.
- Low-density bone presents challenges for achieving adequate implant anchorage.
- Evaluating different osteotomy preparation techniques is essential for improving clinical outcomes.
Purpose of the Study:
- To compare the primary stability and bone quality changes associated with three distinct milling systems for dental implants.
- To assess the efficacy of conventional drilling, osseodensification, and bone expander techniques in low-density bone models.
Main Methods:
- An in-vitro study utilizing fresh, low-density bovine ribs.
- Osteotomies were prepared using three techniques: conventional drilling, osseodensification, and bone expander (n=5 per group).
- Bone quality was assessed via micro-computed tomography, and primary stability was measured by insertion torque.
Main Results:
- No statistically significant differences were observed in bone quality among the cervical, body, and apical regions across the implant groups (SIN, VERSAH, MAXIMUS).
- Insertion torque values also showed no significant differences among the three milling systems (SIN: 35±21.5 N/cm, VERSAH: 43.2±27.1 N/cm, MAXIMUS: 59.6±28.5 N/cm).
- All tested milling techniques demonstrated comparable performance in terms of bone microarchitecture and primary stability.
Conclusions:
- The three milling systems evaluated exhibit similar bone microarchitecture and insertion strength in low-density bone.
- Conventional drilling, osseodensification, and bone expander techniques provide comparable conditions for dental implant placement in this in-vitro model.
- These findings suggest that clinicians can achieve similar primary stability and bone integration regardless of the milling system used in low-density bone scenarios.
