Maizee has a double row of teeth. Maybe I'm a bad puppy parent but I didn't get them pulled :S I just use a finger brush every night to clean them and she seems fine. More teeth to chew her food with
My boyfriends dog (doberman), on the other hand, had some pretty rank breath for a long while and was bleeding constantly. He lost teeth by the handfuls but he was also chewing on everything in sight and knocking them loose.