For how long does it take until lichen planus goes away?

Until removed: Usually lichen planus is the white lesion of pre-cancer. I will disappear by itself in a normal condition. It is suggested that you are under the care of a physician or dentist watch for the change over a period of time. Laser can be a useful tool to have it removed easily.

Lichen Planus: Two good articles to read are: http://www.Everydayhealth.Com/oral-head-and-neck-cancer/lichen-planus-and-oral-cancer.Aspx and http://www.Aad.Org/dermatology-a-to-z/diseases-and-treatments/i---l/lichen-planus/diagnosis-treatment discuss with both your dentist and dermatologist depending upon the location.

No cure: There is no cure, just maintenance for lichen planus. Several dentists work with particular pharmacies to have a custom rinse made up for helping with the problem. Sometimes some meds may have to be administered in severe cases. I would consult your dentist or an oral surgeon.