Hello sir/ma'am I have been suffering from tooth decay for 4 years. All my molar tooth and some premolar tooth are infected. I have visited many doctors till now I couldn't find solution of my tooth concerns. From the very first caries infected teeth I ask doctors is there any preventive measure to this problem. But all they do for me is do a filling job and prescribe some toothpaste. It started from one infected teeth and now the number has increased to ten. Therefore I request you kindly to suggest me a good treatment for preventing any further tooth decay. Also recently I can see there is visible increase in teeth gap and some teeth have developed brown spots. Thank you.