Oral Hygeine

Mr Tanner is having a trouble holding a toothbrush due to hemiparesis in his right hand. While he is undergoing rehabilitation, he is attempting to learn brushing his teeth left-handed, but I am a little concerned about his long term oral hygiene. This will need to be monitored.

Why is the speech pathologist concerned about oral hygiene?
She doesn’t want Mr Tanner to get tooth decay
She doesn’t want Mr Tanner to develop mouth ulcers
She doesn’t want Mr Tanner to get halitosis
She doesn’t want Mr Tanner to be at risk of aspiration pneumonia