It is sometimes recommended that each person have TWO toothbrushes to ensure that it dries thoroughly between uses. You don’t want to be culturing your mouth bacteria on your toothbrush.
You also don’t all have the same mouth biome, because you likely have different oral hygiene habits, diets, etc. So no, you don’t want to share toothbrushes, those of you with less healthy oral biomes may be giving undesirable stuff to those of you with healthier ones.
It is sometimes recommended that each person have TWO toothbrushes to ensure that it dries thoroughly between uses. You don’t want to be culturing your mouth bacteria on your toothbrush.
You also don’t all have the same mouth biome, because you likely have different oral hygiene habits, diets, etc. So no, you don’t want to share toothbrushes, those of you with less healthy oral biomes may be giving undesirable stuff to those of you with healthier ones.