The Utility of Evaluating Primary Stability of Implants Using Accumulated Insertion Torque Values: a Preliminary...

Area of Science:

• Dental Implantology
• Biomaterials Engineering
• Surgical Instrumentation

Background:

• Primary implant stability is crucial for successful osseointegration.
• Current methods for assessing primary stability have limitations.
• Novel, reliable methods are needed to evaluate implant stability accurately.

Purpose of the Study:

• To investigate the potential of accumulated torque value (ATV) as a novel metric for assessing primary dental implant stability.
• To compare ATV with peak torque value (PTV) and implant stability quotient (ISQ).

Main Methods:

• Utilized simulated bone blocks of varying densities (D1-D4) and two implant sizes (42-10ST, 37-6ST).
• Measured implant insertion torque at 0.05-second intervals, recording peak torque value (PTV) and accumulated torque value (ATV).
• Assessed implant stability quotient (ISQ) post-insertion and analyzed correlations between ATV, PTV, and ISQ.

Main Results:

• ATV demonstrated a positive correlation with simulated bone density.
• Strong correlations were found between ATV and PTV (r=0.99 for both implant sizes).
• Significant correlations were also observed between ATV and ISQ (r=0.81-0.83).

Conclusions:

• Accumulated torque value (ATV) is influenced by bone density, reflecting primary implant stability.
• ATV shows a strong correlation with peak torque value and existing implant stability measures.
• ATV presents a promising, novel method for evaluating primary dental implant stability.