This patient comes to the office as an emergency. The patient complains of a toothache in the left mandibular posterior area. On clinical examination you notice a gray-to-white patch on the left posterior buccal mucosa. On questioning the patient tells you that this area is also painful. After reviewing the patient's medical history, you question the patient regarding his recent use of:

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The Answer of  This patient comes to the office as an emergency. The patient complains of a toothache in the left mandibular posterior area. On clinical examination you notice a gray-to-white patch on the left posterior buccal mucosa. On questioning the patient tells you that this area is also painful. After reviewing the patient's medical history, you question the patient regarding his recent use of:

This Patient Comes to the Office as an Emergency