Candice - my daughter bumped her front teeth as a toddler and by age 4 one of them was totally black! They watched it in x-rays and when it appeared that it may be infected, the dentist wanted to pull it. Needless to say, I freaked out! I didn't want my "baby" going through that. I even took her to my dentist to have a second opinion. Anyway, the people in the office assured me that it happens all of the time and that it was just baby teeth that she would begin losing within the next few years anyway. If she didn't have the tooth pulled, it could affect her permanent teeth (which were waiting in the wings already).
I found out after talking to others, that losing the front teeth early because of these accidents. It seemed like so many moms had stories to tell about one child or the other who had this happen - I doubt you will get any looks from other moms. Better to protect future looks from rotten permanent teeth than worry about missing baby ones.
It ended up being harder for me then her - the pediatric dentist was so great with my daughter - she felt no pain! AND she was so mature about the whole thing.
Treat your son like this is the coolest thing to have his teeth pulled - get a toothfairy pillow and make it a really fun event. (we gave my daughter a dollar for her tooth because it had been pulled). Also, when he is in kindergarten (I'm assuming next year) the other kids will be jealous that he has already lost his front two teeth! (at that age, it is so exciting to lose teeth).
Best of luck - I have been there! You are not alone. I hope all goes well.