Treatment of Periodontal disease?

I went to the dentist today and they said that i had mild periodontal disease and gingivitis. I thought this to be quite impossible considering that i am only 18 years old. Although i suppose it is possible I read on the phamplet's about that it is incurable and other type things. From how they explained it to me it seemed like it could be easily treated and than prevented from than after. Should i be too terribly worried about this?

Hi dont listen to these people keep using fluoride toothpaste you need fluoride. I would worry about this but not too much periodontal disease & gingivitis is very common and anyone at any age can get it, it can also be genetic.
It is also incurrable but prevention is the key! all you need to do is eat a healthy diet with low sugar etc, brush/floss twice a day and use mouthwashes in between. Also regular cleans at your dentist will help. You can loose your teeth through this so plz start today!

Have a look at this if u wish.
http://www.nidcr.nih.gov/HealthInformati...

Get a second opinion from a Dentist who is more positive.

Stop using toothpaste with flouride in it and don't use the commercial mouthwashes. (Google flouride - some interesting reading.) Take vitamin C (at least 1g a day, if not more. Speak to a natural health practitioner for best advice.)
Another idea:
Dr. Mercola's Comment:
"I also learned the following technique from Dr. Doug Cook, one of the top environmental dentists in the country. It is the way I brush my teeth.
Use a dry Periodontal Health Brush (715-839-9103, I also have them in my office). Blot the brush at a 45 degree angle at the gum line about 20 times in each area around the mouth. Start behind the teeth first. You can rinse or snap dry the brush after each area to remove the bacteria and parasites. Then use a mixture of six parts of baking soda to one part of Real Salt or Sea Salt. Place in a blender and mix for 30 seconds then place in a container. Wet the tip of your index finger and place a SMALL amount of the salt and soda mixture on the gums. Starting with the upper outside gums and then the inside of the upper, followed by the lower outside of the gums then the lower inside. Spit out the excess. After 15 minutes rinse your mouth. This mixture is incredibly effective at killing the bacteria and parasites that cause plaque. Some dentist will even take a sample from your mouth and show you with a microscope the incredible difference prior to and after using this program and how it radically reduce the bacterial concentration in your gums. It is very important to improve periodontal health. And healthy gums means less teeth problems."