Date	Event	Description
1 May 2020	New citation required and conclusions have changed	In the previous version, we found no evidence of a benefit from toothbrushing patients in intensive care; however, in our updated review, we found low‐certainty evidence that it may reduce the incidence of VAP and very low certainty evidence that it may reduce the length of ICU stay. In this update, we found the number needed to treat for an additional beneficial outcome from CHX is probably 12, whereas it was 17 in the previous version.
25 February 2020	New search has been performed	Inclusion criteria modified. New search run, which found 9 new studies for inclusion. Seven previously included studies now excluded. Added new comparison (CHX versus other oral care agents) and reclassified included studies accordingly.