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[Torque of endosseous dental screw type implants]
Matthias R Schmid1, Harald J Schiel, J Thomas Lambrecht
1Klinik für Zahnärztliche Chirurgie, -Radiologie, Mund- und Kieferheilkunde, Zentrum für Zahnmedizin, Universität Basel.
Schweizer Monatsschrift Fur Zahnmedizin = Revue Mensuelle Suisse D'Odonto-Stomatologie = Rivista Mensile Svizzera Di Odontologia E Stomatologia
|September 25, 2002
Summary
Dental implant design significantly impacts insertion torque. Cylindrical implants with specific features are optimal for osseous and oral implant success, ensuring better mechanical insertion.
Area of Science:
- Biomaterials Science
- Mechanical Engineering
- Dental Implantology
Background:
- Osseous and oral implant success relies on design and insertion mechanics.
- Understanding torque moments during insertion is crucial for implant stability.
Purpose of the Study:
- To investigate the correlation between dental implant design and insertion torque.
- To compare torque moments during manual and machine insertion of implants.
- To determine optimal design parameters for enossal oral dental implants.
Main Methods:
- In vitro experiments using pork ribs.
- Manual and machine insertion of cylindrical and conical implants.
- Analysis of torque moments during insertion and overload conditions.
Main Results:
- Cylindrical implants exhibit an initial insertion curve, while conical implants show a steeper linear phase.
- Deep insertion torque is approximately 80% higher than normal insertion torque.
- Machine insertion torque is 15-20% lower than manual insertion torque.
Conclusions:
- Implant design, particularly cylindrical shape with step-like features, is critical for optimal insertion.
- A cylindrical neck, self-cutting thread, and blunt tip enhance implant performance.
- Findings guide the design of superior enossal oral dental implants.