Does your child suck their thumb? This is completely normal and even healthy for your young one. Most children give up their thumb sucking habit on their own when they’re around 4 to 5 years old. However, thumb sucking can become a problem if your child continues to suck when their adult teeth start coming in. Keep reading to learn what issues prolonged thumb sucking can cause as well as some treatment options for this habit from a pediatric dentist in Hillsboro.