<s>[INST] I have a cut where my gum and cheek meets on my bottom jaw on both the right and left side, how did this happen? And how can I heal it the fastest. Will brushing my teeth harm it, it feels like when I do it stretches it more open but I cant NOT brush my teeth. I can barely even open my mouth too to eat. [/INST] Welcome to Chat Doctor . I have gone through your query and can understand your concerns. As per your complaint cut on the area of the gum in the area where the gum meets the cheek can either be due to traumatic injury caused by eating something hard while can also be due to eruption of authors ulcers. I would suggest you to consult an Oral Physician and get evaluated, and a thorough clinical evaluation will be done. As of now you can apply numbing gel containing Lidocaine over the cuts to relieve pain and ease in eating. You can also gargle with numbing mouthwash. Take anti-inflammatory painkiller like Ibuprofen. Take vitamin B complex supplements. Suck ice pops to relieve inflammation. Hope this information helps. Thanks and regards. Chat Doctor.  </s>