Letter to the editor—Comment on: Perioperative oral care can prevent surgical site infection after colorectal cancer surgery: a multicenter, retrospective study of 1,926 cases analyzed by propensity score matching

We read with great interest the article recently published by Nobuhara et al 1 Nobuhara H. Matsugu Y. Soutome S. et al. Perioperative oral care can prevent surgical site infection after colorectal cancer surgery: a multicenter, retrospective study of 1,926 cases analyzed by propensity score matching. Surgery. 2022; 172: 530-536 Abstract Full Text Full Text PDF PubMed Scopus (5) Google Scholar in Surgery. The authors performed a large-scale, multicenter retrospective study to evaluate the effect of perioperative oral care on surgical site infection (SSI) after surgery for colorectal cancer (CRC) by propensity score matching analysis. In their concluding statement, the authors demonstrated that perioperative oral care could reduce the incidence of surgical site infection after CRC resection. We would like to congratulate the authors for their significant study and insightful analysis. Because their findings are important, several questions deserve attention.