Advanced Periodontal Disease?

I have, I believe, advanced periodontal disease. My gum has been eaten away at one tooth (left, 3rd from middle at the bottom) and the roots are very much exposed. I really need to get it checked out by a dentist (my dad) who i will not see for another month because I live 5 hours away for school. I am absolutely certain my case requires a specialist to surgically remove the tooth, but I was wondering if there is anything I can do to keep it from getting worse. I have been brushing my teeth after each meal with Colgate Total Advanced and rinsed my mouth with ACT mouth wash after every meal as well. I also take 500 mg amoxicillin twice a day. Anything else I can do to take care of this ordeal until my dad can check out my (very very sad) tooth? [By the way, to all youngsters out there: do NOT smoke cigarettes after taking ecstasy; its the worse thing that can happen to your teeth; I've quit smoking for a month now because of this]