How do you fight gingivitis?

Brush your teeth: And floss every day. Visit your dentist every 6-12 months. It's that simple. Really.

See a dentist: Your dentist will have to do a deep cleaning, called scaling and root planing, to remove all tartar. Be sure to use an antiseptic mouthwash twice daily.

Floss!: Good brushing and flossing, and perhaps use of a good mouthrinse like listerine. If it is just gingivitis then this will be beneficial, but if it's progressed to a more serious form, affecting the bone, your home care will not cure the problem.