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The Facebow Record Dr. Richard G. Stevenson III. THE FACEBOW RECORD.

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Presentation on theme: "The Facebow Record Dr. Richard G. Stevenson III. THE FACEBOW RECORD."— Presentation transcript:

1 The Facebow Record Dr. Richard G. Stevenson III

2 THE FACEBOW RECORD

3 Purpose To accurately mount the maxillary cast to articulator

4 Upper Bow Bitefork Transfer Jig Assembly Articulator Index Incisal Pin Fossa Centric Latch Mounting Plate (ring)

5 Facebow Transfer Establishes the relationship between the maxillary arch and the horizontal plane. Transfers this this relationship to the articulator. Provides for an accurate mounting of the maxillary cast to the articulator.

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7 Articulator (ar tik ye la ter), n. 3. Dentistry. a mechanical device, representing the jaws, to which casts may be attached: used in the making of dentures. [ ; ARTICULATE + OR 2 ]

8 Slidematic Measuring Bow components Earplug Anterior reference pointer Intercondylar distance scale Finger lockscrew Center lock wheel Sight Reference plane locator and marker

9 EAR PLUGS ANTERIOR REFERENCE POINTER SLIDEMATIC FACEBOW

10 CENTER LOCKWHEEL FINGER LOCKSCEREW SIGHT

11 INTERCONDYLAR DISTANCE SCALE

12 ANTERIOR REFERENCE POINTER

13 Transfer Jig Assembly components Bitefork Vertical shaft #1 and # 2 clamps Finger screws Articulator index

14 BITEFORK ARTICULATOR INDEX VERTICAL SHAFT CLAMP #2CLAMP #1 FINGER SCREWS TRANSFER JIG ASSEMBLY

15 ProcedureProcedure

16 Facebow Landmarks External auditory meatus –Arbitrary hinge axis location Anterior reference point Maxillary arch

17 Procedure Mark anterior reference point –43 mm above incisal edge of tooth # 7 or #8

18 43 mm

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20 Procedure Cover bitefork with 2 layers of softened baseplate wax –Use warm water (135 degrees)

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25 Procedure Insert fork in mouth with the arm to the patient’s right –Align midline with index notch –Keep fork horizontal

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28 Procedure Press wax against maxillary teeth to index –Have patient secure the bitefork by biting on fork supported below by cotton rolls between the mandibular teeth and the fork

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30 Procedure Attach the vertical shaft to the measuring bow –#2 clamp to patient’s right –Tighten finger screw

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32 Procedure Prepare bow and transfer jig –Loosen screws #1 and #2 on clamps –Loosen bow center wheel with thumb –Slide bow open

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34 Procedure Assemble facebow on patient –Slide bitefork arm through hole in clamp #2 –Place earpiece in ears –Tighten center wheel –Loosen anterior reference pointer screw and points towards reference mark on face

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36 Procedure Assemble facebow on patient –Raise or lower bow to align with anterior reference mark –Tighten clamp #1 –Tighten clamp #2 –Record intercondylar distance Care must be taken to support vertical arm while tightening clamps

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40 Procedure Remove facebow and transfer jig assembly from patient –Loosen center wheel and open bow

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42 Procedure Remove facebow and transfer jig assembly from patient –Remove from patient

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45 Procedure Remove facebow and transfer jig assembly from patient –Loosen finger screw on bow and detach transfer jig assembly from bow

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47 Procedure Remove facebow and transfer jig assembly from patient –Keep in safe place for mounting cast later

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