Comparative Analysis of Screw Loosening between SynOcta and InOcta Tissue Level Abutments: An In Vitro Study.

Area of Science:

• Dental Implantology
• Biomaterials Science
• Mechanical Engineering

Background:

• Dental implant screw loosening is a common complication.
• Abutment type and collar height influence screw stability.
• Comparing InOcta and SynOcta abutments is crucial for improving implant longevity.

Purpose of the Study:

• To compare the screw loosening torque between InOcta and SynOcta abutments.
• To evaluate the mechanical stability of different abutment types under simulated chewing forces.
• To identify factors contributing to dental implant screw stability.

Main Methods:

• Laboratory study involving 20 titanium dental implants (Dentis brand).
• InOcta and SynOcta abutments were installed and torqued to 30 N·cm.
• Samples underwent 10,000 cycles of 90 N compressive force in a chewing simulator.
• Loosening torque was measured and analyzed using an independent t-test.

Main Results:

• The mean de-torque for InOcta abutments was 25.75 N·cm.
• The mean de-torque for SynOcta abutments was 21.98 N·cm.
• InOcta abutments showed significantly higher screw stability (p < 0.001).

Conclusions:

• InOcta abutments demonstrate significantly greater resistance to screw loosening compared to SynOcta abutments.
• These findings suggest InOcta abutments may offer improved long-term stability for dental implants.
• Further clinical studies are warranted to confirm these laboratory findings.