Iwata E, et al. - Researchers investigated the association between the preventive effect of oral care and postoperative pneumonia via performing a multicenter, retrospective study of lung cancer patients who underwent lung resection. They analyzed a total of 721 patients who underwent lung resections between January 2014 and December 2016, at 1 of the 6 hospitals included in this study, identifying 54 (7.5%) patients who experienced postoperative pneumonia [13 of the 280 patients (4.6%) in the oral care group and 41 of the 441 patients (9.3%) in the control group]. Findings thus support the efficacy of perioperative oral care in decreasing the occurrence of postoperative pneumonia in these patients.