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Insertion Torque and Resonance Frequency Analysis in Tapered and Parallel Dental Implants
Joaquín de Elío Oliveros1, Alejandro Gago García1, Hernán López Sacristán1
1Oral Surgery, Implantology and Periodontics, University of León, Spain.
The Journal of Oral Implantology
|August 1, 2023
Summary
This study compared tapered and parallel dental implants, finding parallel implants had higher initial insertion torque. However, both implant types showed similar stability, suggesting drill bit size may influence primary implant stability.
Area of Science:
- Dental Implantology
- Biomaterials Science
- Surgical Research
Background:
- Primary implant stability (PIS) is crucial for osseointegration and varies with bone quality, implant design, and surgical methods.
- Understanding factors influencing PIS is essential for successful dental implant placement.
Purpose of the Study:
- To compare rotational and lateral PIS between conical (tapered) and parallel dental implants of the same coronal diameter.
- To investigate the relationship between PIS and alveolar ridge width (ARW) for both implant designs.
Main Methods:
- Sixty implants (30 tapered, 30 parallel) were placed in 17 patients using a split-mouth design.
- Rotational stability was measured by insertion torque; lateral stability was assessed using resonance frequency analysis (Osstell and Penguin systems).
- Alveolar ridge width and bone density were evaluated using cone beam computed tomography.
Main Results:
- Parallel implants demonstrated significantly higher insertion torque compared to tapered implants.
- No significant differences were found in implant stability quotient (ISQ) between the two implant types.
- Insertion torque for tapered implants showed an inverse correlation with alveolar ridge width.
- Significant discrepancies were noted between the Osstell and Penguin RFA systems.
Conclusions:
- Final drill bit size may significantly impact PIS, irrespective of implant design.
- Tapered implants might have limitations in achieving optimal stability in low-density, wide alveolar ridges.
- Further research is needed to elucidate the influence of drill bit diameter on PIS.
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