Never put your baby to bed with a bottle with fruit juice or milk. Doing so can cause tooth decay. If you must put your baby to bed with a bottle, fill it with plain water. In addition to protecting your baby's teeth, giving your baby a bottle of water at bedtime will help wean them off of the bottle.
A combination of regular dental visits and simple hygiene habits goes a long way in promoting good oral health. Do it for yourself, or do it for your dentist. Either way, you can be certain that your efforts will pay off in more ways than one. Now that's something to smile about!