Bone density: its influence on implant stability after uncovering.

Area of Science:

• Dental Implantology
• Biomaterials Science
• Periodontology

Background:

• Primary implant stability and bone density are critical for osseointegration and long-term success.
• Bone density is an uncontrollable factor influencing implant survival.
• Monitoring implant stability aids in determining osseointegration and prosthesis readiness.

Purpose of the Study:

• To investigate changes in implant stability over time across different bone densities (BQ-1 to BQ-4).
• To establish a clinically satisfactory range for implant integration using the Periotest instrument.
• To correlate Periotest Values (PTVs) with bone-implant interface changes and predict implant loading readiness.

Main Methods:

• Utilized the Periotest instrument to measure implant stability at various stages of treatment.
• Monitored changes in Periotest Values (PTVs) across four bone quality types (BQ-1, BQ-2, BQ-3, BQ-4).
• Correlated PTV changes with histological findings in postmortem specimens.

Main Results:

• Implant stability changes over time, with distinct patterns observed for each bone density.
• Changes in PTVs were more pronounced in denser bone (BQ-1, BQ-2) compared to less dense bone (BQ-3, BQ-4).
• A suggested range of -5 to -2 PTVs indicates favorable implant integration.

Conclusions:

• The Periotest effectively monitors bone-implant interface changes after uncovering.
• PTVs can help identify implants ready for loading and those with potentially marginal integration (PTVs > -2).
• Understanding PTV dynamics across bone densities enhances predictability of implant outcomes.