My uncle is addicted to paan masala nd he is eating masala since ages...but past few weeks he is having toothache,as he accidently chewed small piece of stone inside in it from which there is d sore in the molars in the mouth and it causes problem in chewing food...and also suffering from unbearable pain ..kindly prescribed d precautions to be taken to get relief as soon as possible and as well as medicines...