Association between dental procedures and periprosthetic joint infection: A case-crossover study

Background: Although the risk of dental procedures as a cause of bacteremia has been recognized, evidence regarding the association between dental procedures and late periprosthetic joint infection (LPJI) is scarce. We sought to determine whether dental procedures are associated with an increased risk of LPJI. Methods: The study was conducted under a case-crossover design using a large claims database in Japan. We identi fied adult patients who had undergone dental procedures and were hospitalized for LPJI between April 2014 and September 2021. Exposure to dental procedures was assessed during a case period of 1-4 weeks, with two control periods of 9-12 weeks and 17-20 weeks, preceding LPJI hospital admission. Conditional logistic regression models were used to calculate the odds ratios (ORs) and 95% con fidence intervals (CIs) of LPJI associated with dental procedures in the case period compared with the two control periods. Results: In total, 241 patients with LPJI were included in the case-crossover study. At least one dental procedure was performed in 46 patients (19.1%) in the hazard period and in 75 patients (31.1%) in the control periods. The OR for LPJI with dental procedures was 0.96 (95% CI, 0.61-1.53; p 1 / 4 0.88). Findings were robust in several sensitivity analyses, including stratification by whether the dental procedure included antibiotic prophylaxis. Conclusions: This study suggests that dental procedures are not associated with increased risk of LPJI, and will raise questions about the recommendation for antibiotic prophylaxis before dental procedures. (c) 2023 The Japanese Orthopaedic Association. Published by Elsevier B.V. All rights reserved.