Human: Is it okay to use the same toothbrush for multiple family members? Assistant: 
It is generally recommended that you should replace your toothbrush every three months, but some people choose to share their toothbrushes. If you’re sharing a toothbrush with another person and both of you have good oral hygiene habits, then there shouldn't be any problem with this. However, if one of you has bad dental hygiene habits, it may not be advisable to share the toothbrush.