I know when babies/kids are teething they can get a fuild build up in their ears - can this lead to increased numbers of ear infections?

DS only ever gets ear infections when he is teething. He is currently getting at least 2 of his 2yo molars come up, and he has had 4 ear infections (one was both ears at once) in less than 2 months. THe last one he had they gave him steroids for.

So I am worried they might want to put grommets in - would they do that when he oly gets them if he is teething?