11. max mand rel facebow
TRANSCRIPT
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Hinge Axis LocationHinge Axis Location• Face-bow or
ear-bow used • Record
relationship of maxilla to transverse horizontal hinge axis of mandible
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Hinge AxisHinge Axis
• Transferred to the articulator• Important to prevent occlusal
errors, particularly when cusped teeth are used in dentures.
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Edentulous Bite Fork:Edentulous Bite Fork: Allows patient to close Allows patient to close against the opposing against the opposing rim to stabilize the rim to stabilize the record basesrecord bases
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Heat bite fork and imbed it centered and parallel the
occlusal plane
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Finger cots can be used over ear pieces for infection control
Patient can assist with placement and orientation in external auditory meatus
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Orient in external auditory meatus
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Slide facebow onto Slide facebow onto biteforkbitefork
Extend nasion Extend nasion support& tightensupport& tighten
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Tighten all facebow Tighten all facebow wrencheswrenches
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Loosen these tighteners. Loosen these tighteners. Release the recordbase Release the recordbase by breaking the seal, by breaking the seal, and removing the and removing the facebow.facebow.
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Loosen and remove the Loosen and remove the transfer jig from the transfer jig from the earbowearbow
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Place facebow support Place facebow support on transfer jig and attach on transfer jig and attach to indirect mount.to indirect mount.
Don’t use direct method Don’t use direct method with indirect mount.with indirect mount.
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Remove incisal pin and set Remove incisal pin and set the centric latchthe centric latch
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Indirect jig with record base on articulator
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Place cast support and Place cast support and maxillary mounting maxillary mounting plateplate
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Attach cast with Attach cast with mounting plaster in two mounting plaster in two
stepssteps