1. Dr. Richard G. Stevenson III
The Facebow Record
Dr. Richard G. Stevenson III

2. THE FACEBOW RECORD

3. Purpose
To accurately mount the maxillary cast to articulator

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

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.

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 + OR2]

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

9. SLIDEMATIC FACEBOW
EAR PLUGS
ANTERIOR REFERENCE
POINTER

10. SIGHT
CENTER LOCKWHEEL
FINGER LOCKSCEREW

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

15. Procedure

16. Facebow Landmarks External auditory meatus Anterior reference point
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

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

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

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

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

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

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

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

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

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

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

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