Common lesions like Aphthae, herpetic lesions, fibromas, mucoceles, etc. can usually be diagnosed based on clinical appearance and history. If a biopsy is done the tissue should always be submitted to a path. lab for sectioning an Histo. analysis. Most patients will see a physician for tissue related problems and see the dentist for tooth related problems. That is the norm., however, the average dentist should know more about oral lesions than the average M.D. Why in the world a dermatologist would be referred a patient with an oral lesion is beyond me. If you had a sore on your ding-dong would you go to a dermatologist? I think you would go to a urologist. Therefore, Sore in your mouth = Dentist or ENT/OMFS.