Single-Dose Bioavailability for Prophylactic Coverage in Patients Undergoing Dental Implant Surgery

Area of Science:

• Oral surgery and implantology
• Pharmacokinetics and drug delivery
• Infectious disease prevention

Background:

• Antibiotic prophylaxis is standard in dental implant surgery to prevent failure.
• Existing reviews lack confirmation of antibiotic effectiveness in reducing post-operative infections.
• Understanding drug concentration at the surgical site is crucial for optimizing prophylaxis.

Purpose of the Study:

• To quantify amoxicillin plasma levels in peripheral venous blood and at the dental implant surgical site.
• To assess the efficacy of standard prophylactic amoxicillin dosing in achieving therapeutic concentrations.
• To provide data supporting or refining antibiotic prophylaxis protocols in implant dentistry.

Main Methods:

• Prospective study involving 32 patients undergoing dental implant surgery.
• Administration of 1g oral amoxicillin 1 hour pre-surgery.
• Collection of venous and surgical site blood samples for amoxicillin quantification via high-pressure liquid chromatography.
• Statistical analysis comparing drug levels and patient demographics (age, BMI).

Main Results:

• Mean amoxicillin concentration at the implant site was 5 ± 2.63 μg/mL.
• Mean venous blood amoxicillin level was 4.21 ± 2.12 μg/mL.
• No significant correlation found between patient demographics (age, BMI) and amoxicillin plasma levels.

Conclusions:

• Prophylactic amoxicillin doses achieve plasma concentrations exceeding the minimum inhibitory concentration (MIC) for key dental bacteria.
• Findings support the use of amoxicillin for preventing infections like peri-implantitis.
• Achieved drug levels suggest current prophylaxis is adequate for common pathogens.