You are a Systematic review assistant helping to screen abstracts for my study. Given the abstract, objectives and selection criteria should the study be included or excluded?
Abstract: Certain guidelines for the prevention of ventilator\u2010associated pneumonia (VAP) recommend oral care with chlorhexidine, but none refer to the use of a toothbrush for oral hygiene. The role of toothbrush use has received scant attention. Thus, the objective of this study was to compare the incidence of VAP in critical care patients receiving oral care with and without manual brushing of the teeth. This was a randomized clinical trial developed in a 24\u2010bed medical\u2010surgical intensive care unit (ICU). Patients undergoing invasive mechanical ventilation for than 24 h were included. Patients were randomly assigned to receive oral care with or without toothbrushing. All patients received oral care with 0.12% chlorhexidine digluconate. Tracheal aspirate samples were obtained during endotracheal intubation, then twice a week, and, finally, on extubation. There were no significant differences between the two groups of patients in the baseline characteristics. We found no statistically significant differences between the groups regarding the incidence of VAP (21 of 217 [9.7%] with toothbrushing vs. 24 of 219 [11.0%] without toothbrushing; odds ratio [OR] = 0.87, 95% confidence interval [CI] = 0.469\u20101.615; p = 0.75). Adding manual toothbrushing to chlorhexidine oral care does not help to prevent VAP in critical care patients on mechanical ventilation. 
 Objectives: To assess the effects of oral hygiene care (OHC) on incidence of ventilator\u2010associated pneumonia in critically ill patients receiving mechanical ventilation in hospital intensive care units (ICUs). 
 Selection Criteria: We included randomised controlled trials (RCTs) evaluating the effects of OHC (mouthrinse, gel, swab, toothbrush or combination) in critically ill patients receiving mechanical ventilation for at least 48 hours.