Facebow transfer
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This document discusses facebow transfer and gothic arch tracing. It defines a facebow as an instrument used to record the spatial relationship of the maxillary arch to anatomic reference points, like the mandibular transverse horizontal axis, and transfer this relationship to an articulator. The document then provides a brief history of facebow development, noting pioneers like Hayes in 1887, Snow in 1899, and Gysi in 1908. It concludes by describing the two main types of facebows: arbitrary and kinematic.
Facebow transfer
- 1. FACEBOW TRANSFER & GOTHIC ARCH TRACING -Dr Palak Mishra PG 1st Year
- 2. contents
- 3. DEFINITION an instrument used to record the spatial relationship of the maxillary arch to some anatomic reference point or points and then transfer this relationship to an articulator; it orients the dental cast in the same relationship to the opening axis of the articulator; customarily the anatomic references are the mandibular transverse horizontal axis and one other selected anterior reference point- GPT9
- 4. HISTORY 1887- Hayes 1899- G.B.Snow (improved the design of facebow) 1908- A. Gysi first facebow to record sagittal condylar path and also to relate cast to articulator Hayes 1887 Snow 1899
- 5. 1927- B.B.McCullum and Stuart Introduced a method to locate hinge axis 1955- McCollum & Stuart Developed pantograph
- 6. TYPES OF FACEBOW ARBITRARY FACEBOW Facia Type Ear Piece Type KINEMATIC FACEBOW Actual Value Face Bow Hinge Axis Face Bow