periodontal pocket

This problem occurs when you don't brush properly twice a day the food remain stuck in your mouth and bacteria enjoy having food.
Again and again there will be depositing of debris and a type of calculus is formed.

Under calculus there will be anaerobic bacteria which get their home to stay in your mouth.
The start slowly and steadily increased and create infection.
Due to that infection the gums which are attached with tooth, loosened.
This is called as periodontal pocket.
Due to this the food always stuck into it and u re complaining that food stuck in teeth
Please fill my teeth.
The problem is not in your teeth but it is in your gums .
You have to scale it up and do warm water with salt  rinses or either use a good mouth wash.