Hi. Could you plz elaborate on your medical history. Also have u just switched to a new mouthwash or a toothpaste??

Your history suggests a need for a professional evaluation by an oral medicine practitioner. This will help assess what is the cause of your problem

If happens, when we are asleep, we don’t know how much pressure is been put on the face and the cheek area. Automatically the teeth inside are going to get pressed against your cheek area, causing a thin or heavy line of teeth indentations on cheek area, called Linea alba. Mainly , if you have a habit of bitting off or peeling off the skin from the inner side of the corner of the mouth then stop doing that. It will reduce. Rest stinking of mouth and saliva in the morning is normal. This is morning breath. Please keep a habit of brushing before bed at night and rinsing your mouth with Chlorhexidine mouthwash 0.2% diluted twice a day. Drink lots of water, eat proper healthy food. And lastly spot bitting off and peeling of you skin from the inner corners of your mouth. And do see a dentist twice a year. Good luck.