Since i am having dentures and i need to fill front of my teeth will it hurt since it is nxt to the denture n what can i do to prevent my tooth frm rot?

Such problems at: Such problems at the age of 21? Top priority is for you to understand what got you in this predicament and how best to restore your mouth and maintain a healthy mouth. Dentistry can be done without pain and is best restored with dental implants or implant retained prosthesis. Make sure you are in the hands of a well qualified and caring dentist. Discuss your options and think long term! good luck!

Better oral hygiene.: If your teeth are rotting out, there is no don't in my mind that your oral hygiene is poor. I am certain that you brush daily. Unfortunately if tooth brushing actually was very effective, there wouldn't be tooth decay or gum disease. Stop brushing long and hard and recognize that the really dirty areas are only accessible by floss. Floss twice daily and have your dentist correct your decay.