Face-Bow Transfer Record

Remove soft tissue registration and excess with _________________ blade • After trimming, place the registration back in the simulator and check for _____________

Bard Parker; stability

What setting should the bennett angle and condylar guidance angle be set to on the articulator?

Bennett: 15. Condylar guidance: 30.

bite fork registration is captured using ____________.

Blu-mousse.

When face-bow record is transferred to the articulator, maxillary cast is mounted on the upper member of the articulator establishing the ______________ plane.

axis-orbital plane.

2 posteriors: hinge axis of the condyles • Recorded in the patient's _____________________________________with the earpieces on the face-bow • Represent the__________ (hinge) axis of each condyles

external auditory canal; rotation

A _____________ is used to mount maxillary casts precisely on the articulator reproducing the 3D position of the maxilla and to establish the relationship of the maxillary teeth to certain anatomic reference points.

face-bow transfer.

The use of a ____________________ articulator with a face-bow will estimate the position of the _________ in the skull as well the relationship of the _______________ (the hinge axis)

semi adjustable; maxilla; mandible

• Patient may bite on cotton rolls to ___________ bite fork • Patient may hold bite fork securely against mx teeth

stabilize

• Attach Quick Lock Toggle Assembly to bite fork: tighten Screw # 1 then # 2 • To prevent ____________ of the face-bow, support it with one hand

torquing

Face bow and bite fork must stay in position when operator is not holding face bow or fork: ensure no movement!

true

A permanent intercondylar distance is incorporated into all Series 4000 Articulators. • This corresponds to the ______ setting found on the face-bow

"M"

What are the advantages of using a face-bow transfer?

--More accurate representation of patient functional components. --Better esthetics. --Less adjustment of indirect restorations. --Better restorations overall.

Where should the operator be positioned when capturing the bite fork registration?

--stand behind patient. --align center mark of bite fork with the midline.

What should the incisal guide pin be set to?

0.

Transferring face bow record to the articulator: Indirect method steps 1-4

1. Place the transfer base assembly on the lower member 2. Add the magnetic face -bow fork support 3. Insert the vertical rod 4. Raise the face -bow fork support until it touches the undersurface of the fork

How to clinically discuss the face-bow procedure with patients?

1. caution that earpieces in auditory canal; will greatly amplify noises. 2. assure that the procedure is quick. 3. make sure all parts are ready to go - test and loosen every screww.

Transferring face bow record to the articulator: Indirect method steps 12-15

12. . Close the upper member until it contacts the support bar 13. Hold with your hands until the mounting stone has set 14. Remember to replace incisal guide table 15. Insert incisal pin

What are the 3 reference points captured on a face-bow transfer?

2 posteriors: hinge axis of the condyles --Recorded in the patient's external auditory canal with the earpieces on the face-bow. --Represents the rotation (hinge) axis of each condyles. 1 anterior: Nasion or orbital point. --Determined by a specific distance from the nasal bridge by the nasion relator.

Transferring face bow record to the articulator: Indirect method steps 5-8

5. Cast should be wet with retentive logs 6. Engage the central latches to keep the condyles in contact with the posterior and superior walls of the condylar guides 7. Set condylar inclination to the 30 o mark 8. bennet angle - 15

Transferring face bow record to the articulator: Indirect method steps 9-11

9. Position the mx cast into the bite registration 10. Ensure stability (no rocking) 11. Apply mounting stone to the base of the cast and to the mounting plate

To obtain facebow registration you need the

A: Transfer Assembly: Bite Fork, Vertical Rod & T Screw B: Support Bar and Locking screw C: Transfer Base Assembly D: Face-Bow with Nasion Relator and Fork

What is a face-bow transfer?

Designed to enable the user to quickly and easily mount casts of a patient's dentition on an articulator that will reproduce their natural relationship and movements with acceptable degree of accuracy.

There are 2 methods to mount the maxillary cast:

Direct and indirect mounting

_______________ is the imaginary line connecting the two centers of rotation in each mandibular condyle.

Hinge axis.

T/F: the dentoform is usually considered to have CR/MS in harmony with ICP/MI.

True.

What articulator do we use?

Whip Mix 4000 Series Articulator and Face-Bow

Face -Bow Assembly • Face-Bow: Loosen the _________ knob (1) • Attach _________ Relator centered on Cross Bar (1) • Attach __________ Rod and Quick Lock _____________ Assembly on Cross Bar (2)

central; nasion; vertical; toggle

tightening the nasion will move the earpieces forward to approximate the ______________

condyles

Once the lower cast is mounted, the ______________ the ______________ teeth is stablished: a mandibular closing arc can be stablished for each tooth: tooth contacts in closure

hinge axis ; lower

the relationship of the maxilla to the mandible is represented by the __________ axis.

hinge axis.

What method is used to mount the maxillary cast (direct or indirect)?

indirect.

______________ is the distance between the rotational centers of the two condyles.

intercondylar distance.

• 1 anterior: Nasion or orbital point • Determined by a specific distance from the _________ ___________ by the nasion relator

nasal bridge

Once the lower cast is mounted, the distance between the hinge axis and the lower teeth is established. A _______________ can be established for each tooth representing tooth contacts in closure.

mandibular closing arc.

facebow mounts the ____ cast; CR mounts the ____ cast.

max; mand

What marks should be caputured in a bite fork registration?

maxillary cusp tips and incisal edges.

the bite fork should be parallel to _____________ when capturing bite fork registrations and face-bow transfer records.

parallel with the pupil line or to the floor.

Place finger cot over each earpiece will help facilitate proper disinfection of the face-bow • Instruct patient to separate the side arms of the face-bow & insert the earpieces in the external auditory canal with a firm forward pressure • Patient holds both arms of face-bow

true

Removing the Face-Bow from the Simulator: • Loosen thumbscrew for the nasion and slide nosepiece away • Loosen 3 thumbscrews on the ear bow • Gently remove the earpieces from the ears

true

after removing bite fork apply disinfectant spray and store face-bow lying flat with bite fork up

true

the incisal pin should be on center of table, rounded portion down, and set on zero.

true

want to apply the same amount of force on both sides of bitefork to ensure it is not canted/slanted

true

the patient should be in an ______________ position

upright

indirect method advantages (we use this one)

• Increased stability when mounting, greater access to your cast, and parallel orientation of the upper and lower members of the articulator. • Additionally, there is no need to have several face-bows for your practice. Having additional Transfer Assemblies will allow you to utilize your face-bow immediately after proper asepsis