Cocaine can be detected in the system anywhere from 12 hours to 4 days after use. The length of time cocaine stays in your system depends on the dosage amount ingested, the route of administration and frequency of use. When cocaine is metabolized, the liver turns it into benzoylecgonine, which is then excreted in urine.
This is a remarkably common problem, especially among the young. The muscles that allow you to chew (muscles of mastication) can be overworked and strained, the same as any other muscle in your body. If the muscles are well-toned, not weak, and not overworked/strained, this will not be a problem.
Chewing and biting actions are largely controlled by the movement of five muscles on either side of the head. Contraction of the buccinators compresses the cheeks. these muscles, together with the tongue, are used to position food in the mouth.