Wean to Cup, or Bottle?
Doctors and dentists agree that it's best to wean your child to a sippy cup if your child is older than nine months and can use one. That's because bottles -- unlike cups -- are apt to become security objects, and constantly sucking milk or juice can cause cavities.
But if you're weaning a young baby, a bottle will be a more soothing substitute for your breast, since you can hold him while he feeds. And of course, an infant won't be able to hold a sippy cup anyway!