Is there a Pediatrict Dentist?

I had a 6 months old son, and i notice that he started teething, and I want to know what I should expect. I know about the diarrhea and the drooling, but what else? I don't want to freak out and be prepared. I also want to know if there is a Pediatric Dentist to take care of his teeth., i want to him to have a good teeth. and for my baby, teething means lots of discomfort and big-time tears, Thanks to everyone for their help! 

<3 Mommy Jerilyn <3