Here is a handout I created that addresses dysphagia, aspiration, aspiration pneumonia, and oral cares (dental hygiene) in a Q&A format. It covers easy to understand explanations, the importance of oral cares, and how to do oral cares on (a) a person who cannot perform oral hygiene, (b) someone on a restricted or dysphagia diet, and (c) someone with resisting behavior (i.e. refusing to open mouth, biting, kicking) including an individual with dementia.
This handout also addresses tube fe