The OraFlex™ MPA Microstomia device provides manual, static and dynamic stretching of the lips and mouth for the prevention and treatment of microstomia, trismus, and lip hypomobility from burns, radiation fibrosis, trauma, craniofacial disorders, scleroderma, etc. The device can also be used for orofacial muscle training. The device includes the OraFlex Appliance, a pack of elastic bands for dynamic stretching, and a pack of wraps for static stretching.