Facebow Transfer — NDEB AFK MCQ
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Correct answer: B — To transfer the relationship of the maxillary arch to the transverse hinge axis of the patient to the articulator
A facebow (earpiece or kinematic) records the spatial relationship of the maxillary arch relative to the transverse hinge axis (approximated at the external auditory meatus for an arbitrary facebow). This record is transferred to a semi-adjustable articulator so that the maxillary cast is mounted in the same relationship to the articulator's hinge axis as the patient's maxilla relates to the TMJ. This ensures more accurate jaw movements during prosthesis fabrication.
Reference: Zarb – Prosthodontic Treatment for Edentulous Patients, 13th ed., 2013