An apparatus is provided to fix a thermoplastic mask to a patient. The apparatus includes a member having a teeth-receiving portion formed to be positioned adjacent to a cranio facial bone of the patient, a fixation member coupled to the member, the fixation member including a plate and a fastener, a distinct fastener plate formed for coupling with the fastener to couple the mask to the fixation member so that the member is in a fixed position relative to the mask, and a lower plate member positioned adjacent to the member.
REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of U.S. application Ser. No. 10/072,778 filed on Feb. 8, 2002 now U.S. Pat. No. 6,945,251, which itself claims priority to U.S. Provisional Patent Application Ser. No. 60/267,536 filed Feb. 9, 2001.