Dental Implants Surface in vitro Decontamination Protocols

Area of Science:

• Dental Implantology
• Periodontology
• Biomaterials Science

Background:

• Increasing prevalence of peri-implant diseases necessitates effective decontamination protocols.
• Peri-implantitis presents complex treatment challenges with no established clinical standard.
• Efficient in vitro methods are crucial for evaluating implant surface decontamination strategies.

Purpose of the Study:

• To evaluate the efficacy of two distinct in vitro decontamination protocols for dental implant surfaces.
• Comparison of air-powder abrasive system with sodium bicarbonate versus antimicrobial photodynamic therapy (aPDT).

Main Methods:

• Twenty titanium implants were contaminated in vitro with subgingival biofilm.
• Groups included: negative control, positive control, sterile saline brushing, sodium bicarbonate air-powder abrasive, and aPDT (red laser + toluidine blue O).
• Bacterial colony-forming units (CFUs) were quantified after treatment.

Main Results:

• The aPDT group exhibited significantly fewer CFUs (19.38 × 10^5) compared to sodium bicarbonate (26.88 × 10^5), saline brushing (47.75 × 10^5), and positive control (59.88 × 10^5) (p < 0.01).
• Both aPDT and sodium bicarbonate treatments showed statistically significant differences from the negative control (p < 0.01).

Conclusions:

• Both the air-powder abrasive system with sodium bicarbonate and aPDT are efficacious for in vitro decontamination of dental implant surfaces.
• These findings support the potential of these protocols in managing peri-implant diseases.