Is it possible to add an injury (that wasn’t documented during my service) to my medical record so that I can qualify for disability?

While enlisted I had my wisdom teeth removed on one side of my mouth. During the removal the dentist used a “bridge” to hold open my mouth that was too big for my mouth. Since that procedure was done (1992) I have issues with my jaw locking shut while eating. I have since learned how to manipulate my jaw back when it happens. I am a regular visitor to the VA because they cover my medical care 100% because of a non-service connected spinal cord injury. It’s one of the few injuries they cover even non service connected. For which I am so grateful! And I have mentioned my jaw to the staff I see for energy therapy and acupuncture so they can try to address the pain with those services. ?
Is it possible to get the jaw issue listed into my record so that perhaps I could qualify for disability pay because of it? Or because I didn’t report it while in the Army, I’m out of luck??