Is it limited to open your mouth when you are in the stage of scar hyperplasia? The final feasible treatment method that does not affect the function is scar excision, release and skin grafting.

(Dr. Liu from the Second Hospital of Shanda University solemnly reminded me that it is impossible to fully understand the condition because I can't see the patient in person. The above suggestions are for reference only. Please go to the hospital for specific diagnosis and treatment under the guidance of a doctor! )