If your child is already used to the pacifier, I would just make a habit of picking the pacifier up and putting it out of sight any time they drop it. Don't run to get it at every peep and whimper. Use it when they are really cranky only. I promise, over time they won't want it and you'll be so much happier when it goes away. If it's gone soon enough, the teeth will be okay. Otherwise, you'll end up with 10 or 15 of them at home, the car, daycare, grandmas, etc. Also, when you can't find one at night and the kid has been using it day and night for a year or more, you'll be looking for an all night Walmart. NO Fun.
Teeth are not the only concern. Have you ever seen a little kid with bumps around his mouth? That would be a yeast infection from that area always being wet, warm, and having bacteria trapped between the face and binky. How about the children which chronically dirty rings around their mouths? Have you ever seen a mom pick a binky off the floor, wash it off by sucking it herself and give it back to the child? Binkies are gross and they are entirely NOT needed. When moms tell me their babies can't get a long without them I just don't even know what to say. Within 1 week at my house they forget the binky even exists during the day. I've seen too many moms grab them out of the bag and stick them in their mouths when they aren't even unhappy.
Truly, I feel sorry for kids that have these things shoved in their mouths over and over as infants. It is an aquired taste for them. They don't just take to them on day # 1. I figure when you have to put it back in and hold it in place over and over, why do it at all? I've been in enough hospitals with my own and friends and daycare babies to see those nurses stick them in, hold them in and as soon as they walk away the binky falls out. Every time they walk by they do it again. If you do it often enough, the kid will accept it. But why? It seems cruel just to make them become addicted to something that has to be taken away later. That's bad enough. But the dirt and bacteria makes me queasy.