Interproximal implant thread exposure after initial bone remodeling as a risk indicator for peri-implantitis

Area of Science:

• Dentistry
• Periodontology
• Biomaterials Science

Background:

• Peri-implantitis presents significant clinical challenges in treatment.
• Identifying patient and implant-level risk factors is crucial for prevention.
• Previous research has not conclusively identified specific radiographic indicators for peri-implantitis risk.

Purpose of the Study:

• To investigate interproximal radiographic implant thread exposure as a risk factor for peri-implantitis.
• To evaluate other potential patient- and implant-related risk indicators.
• To provide evidence-based recommendations for peri-implantitis prevention.

Main Methods:

• Retrospective longitudinal radiographic and clinical study design.
• Inclusion of 165 partially edentulous adults with dental implants and ≥2 years follow-up.
• Comparison of implants with exposed threads (test group) versus those without (control group).

Main Results:

• Implants with exposed threads showed an eight-fold increased odds of developing peri-implantitis.
• The risk of peri-implantitis increased four-fold with each exposed implant thread.
• No other confounding patient- or implant-related risk factors were identified.

Conclusions:

• Interproximal implant thread exposure after bone remodeling is an independent risk indicator for peri-implantitis.
• Clinicians should monitor patients with exposed implant threads for early signs of peri-implantitis.
• Early detection and monitoring can improve peri-implantitis management and patient outcomes.