Face-Bow Instructions - Panadent · face-bow downward and forward from patient’s face (arrow)....

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The following procedure is followed whenPanadent Bite-Tab compound discs are usedfor bite-fork registration.

Bend backing-sheet sharply at extreme printedend of Bite-Tab strip to free end of strip so it canbe grasped with index finger and thumb. PeelBite-Tab strip away from backing sheet. Do nottouch adhesive under end of tab wherecompound is located.

Press one Bite-Tab at each of the following sixlocations: left molar, right molar, and incisor onupper and lower surfaces (six tabs) on clean,dry bite-fork.

Hold Bite-Tab with thumb and index finger atlateral edges (arrows). Fold printed end of tabback (adhesive to adhesive) at dotted line. Thisfold-back produces a non-stick flap for easyremoval of Tab after maxillary cast has beenmounted. Do not touch adhesive under Bite-Tabsince powder from latex gloves will preventBite-Tab from adhering to bite-fork.

Place intra oral end of bite-fork in hot water (125°F/ 40°C) for about one half to one minute to softenBite-Tab compound discs. If tap water is not hotenough, hot coffee or coffee water will work wellto soften compound.

ATTENTION: Do not place bite-fork in regularwater-bath since wax residues andoils in water-bath will preventBite-Tabs from adhering to bite-fork.

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Face-Bow InstructionsM Panadent Corporation580 S. Rancho Avenue • Colton, California 92324, USATel: (909) 783-1841 • USA & Canada (800) 368-9777

h4000, 4130 Includes: 4015u

These instructions applyto the following items:

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Place bite-fork in patient’s mouth with stem onpatient’s right side and pointing straight forward.Position bite-fork with midline mark on forkaligned with midsagittal plane of head. Placemandible in retruded position. Instruct patient toclose teeth with light pressure into the softcompound and open mouth immediately beforeteeth contact metal bite-fork. (Soft compoundcan be molded with fingers before placing inmouth for better contact with teeth if needed.)

Remove bite-fork from patient’s mouth andharden compound discs in cold water to quicklyharden compound.

Shave back excess compound leaving no morethan 1mm deep impressions of cusp tips andincisal edges. Also cut back any distal extensionedentulous areas leaving only small area of ridgewith dense attached gingiva to support bite-forkin the mouth. Remove all loose particles ofcompound with soft tooth brush or compressedair.

For highest accuracy, dry compound with airsyringe. Place small amount of bite registrationmaterial on three compound pads on maxillaryside only. (Include distal extension edentulousareas, if present.)

Face-Bow Instructions


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Seat re-lined bite-fork registration againstpatient’s maxillary teeth and have patient closemandibular teeth firmly into original indentationsusing lower jaw to support fork until bite pastehardens. (Operator' s hands should be removedfrom bite-fork while reline material is hardening.)

Position bite-fork attachment stem assemblywith horizontal slide bar on patient’s right side(arrow 1) and set-screw facing forward (arrow 2).Insert “short end” of attachment post into crossbar of face-bow completely to ring stop (upperend of post should be flush with upper surface ofcross bar). Rotate attachment post until flat areaon upper end faces forward to meet flat-endedset screw. Tighten set screw with hex wrench, tolock attachment post to cross-bar.

Loosen double-toggle clamp with hex wrenchuntil both members of clamp are completely freeto slide and/or rotate respectively.

Lock nasion relator saddle with thumb screwforward against nasion relator bracket (top arrow).Slide nasion relator bracket completely ontoface-bow cross-bar and lock in place with thumbscrew (bottom arrow).


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Loosen single toggle clamp with hex wrench untilclamp slides freely up and down ver ticalattachment post.

Slightly loosen ( ½ turn only) large thumb screwat anterior end of face-bow (arrow).

While operator holds anterior end of face-bow,have patient grasp side-arms of bow with his/herfingers near distal ends and extend bow tomaximum width bilateral to face (arrows).

Instruct patient to contract side-arms and placeear pieces firmly in auditory meatuses(bilateral horizontal arrows). While patient keepsside-arms firmly in contact with ears, tighten largethumb screw (vertical arrow) to lock face-bowwidth.

Note: Attachment post clamp is not joined toprotruding stem of bite-fork at this time.



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Loosen nasion relator shaft thumb screw slightly.While patient continues to support side-arms,raise or lower anterior end of face-bow untilnasion-relator saddle can be made to contactpatient’s nasion area. Push firmly back with fingerof one hand on end of nasion relator shaft whileconcurrently pulling forward with fingers onnasion support bracket (reciprocal arrows). Locknasion relator saddle in firm contact againstbridge of patient’s nose (nasion).

While patient continues to support both side armsfirmly, slide double-toggle clamp over protrudingstem of bite-fork. (It is recommended to slide theclamp close to the patients mouth to reduce asmuch flexion of the components as possible.)Grasp double clamp (to offset torque) and tightenclamp securely to stem of bite-fork with hexwrench.

Loosen nasion relator thumb screw slightly andretract nasion relator away from patient’s face.Lock nasion relator in contact with supportbracket (arrow).

Have patient sit upright with head held perfectlyerect and looking straight forward (Panadent Bio-Esthetic level guage can be added. ( See LevelGauge Instructions )

While patient continues to hold head erect andface-bow level, grasp single-toggle clamp tightly(to offset torque) and tighten clamp securely tovertical attachment post with hex wrench.


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Slightly loosen ( ½ turn only) large thumb screw.Have patient open mouth and retract side-armscompletely away from ears (arrows).

Instruct patient to remove their hands fromface-bow and open their mouth. Removeface-bow downward and forward from patient’sface (arrow).

Loosen hex head set screw (½ turn only) on face-bow cross bar in preparation for removing bite-fork assembly.

Remove bite-fork assembly straight downward(arrow). Transport bite-fork assembly to laboratoryfor cast mounting procedure. (By having multiplebite-fork assemblies, face-bow can immediatelybe used for other patients.)



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The Bennett size and angular rotational settingof the Panadent motion analog is not critical formounting procedures since the motion analogsare all interchangeable in centric relation.

When using standard mounting plates on bothmaxillary and mandibular articulator frames,rotate mounting plates in direction thumb screwis being tightened so the plates will have perfectrepeatability when replaced after cast mountingprocedure.

Note: This procedure is not necessary if thePanadent magnetic mounting plate system isbeing used. ( See Magna-Split II Instructions )

Slightly loosen right and left axis shaft lock screwswith hex wrench.

Slightly loosen right and left axis shaft thumbscrews. Be sure motion analogs contactcalibrated sides of articulator (arrow). Rotatemotion analogs until #6 horizontal line coincideswith superior surface of analogs, then tighten axisshaft thumb screws to maintain positionstemporarily.

Maxillary Cast Mounting Instructions

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After analogs have been set at averageangulation of “6”, retighten right and left axis shaftlock screws with hex wrench.

Set incisal pin at heavy center engraved ring(arrow). This will make the maxillary andmandibular articulator frames parallel to eachother.

Note: If curved pin articulator is being used, setincisal pin at '0' degrees.

Open articulator by hinging maxillary frame back.

Spray entire articulator, including analogs, lightlywith silicone lubricant spray each time beforemounting casts to prevent mounting stone fromsticking to articulator.(The lubricant will cause residual mounting stoneon articulator to be easily wiped off withoutscratching finished surface of instrument.)Note: A vaseline or silicone gel on a cotton swabshould be used each time to lubricate the analogpaths and reduce wear on the analogs andcondylar axis elements.



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Slightly loosen incisal table thumb screw andremove table forward (arrow).

Place mounting fixture in incisal table slot andlock in rear most position (arrow) with thumbscrew. When using the bi-mount fixture(#4054 ME) use high end of fixture for "H" modelarticulators and low end for mounting on "L"model articulators.

Cut back excess compound and/or zoe relinematerial from maxillary side of bite-fork. Includeall soft tissue imprints except selected ridge areasused to support an edentulous area. Leaveimpressions of cusp tips approximately 1mmdeep.

Maxillary Cast Mounting InstructionsRotate maxillary frame back 180°. Extend andlock support post with thumb screw.

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Hold upper end of bite-fork attachment post withthumb and index finger. Place lower end of bitefork post into vertical hole in mounting fixture.Seat post completely down to retaining ring(arrow) to determine how much plaster is neededto make contact with plaster bite-fork support. Ifplaster support is too high, reduce it with a modeltrimmer.

Remove bite-fork assembly. Place a sufficientquantity of soft quick set plaster on upper surfaceof bite-fork support column so that lower surfaceof bite-fork will be slightly imbedded in the softplaster when bite-fork assembly is placed inmounting fixture.

Place pre-made plaster bite-fork support (shown)or Panadent Magnetic Bite-Fork Support on lowerframe of articulator to support maxillary cast.

(See Magnetic Bite Fork Support Instructions)

Hold upper end of bite-fork attachment post withthumb and index finger of one hand. Place lowerend of attachment post into hole in mountingfixture. Be sure bite-fork attachment post iscompletely down to retaining ring stop. Tightenset screw with hex wrench (or fingers if 'T' headscrew is being used). Remove hands and allowsupport plaster to harden undisturbed.



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With model trimmer, grind maxillary surface ofcast parallel to occlusal plane of teeth. Grindperimeter of cast with approximately 10-15° bevelto depth of buccal and labial vestibules. Avoidtouching teeth or buccal and labial gingival areaswith trimmer wheel.

Score superior mounting surface and beveledareas of cast with laboratory knife orcarborundum disc for retention in mounting stone.

Remove all bubbles or impression defects fromocclusal and incisal areas of casts.

Seat cast carefully into bite fork registration andverify fit of cast to registration.


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Close maxillary frame of articulator over cast untilend of incisal pin contacts upper surface ofmounting fixture (arrow). Determine quantity ofmounting stone needed. Grind cast if necessaryso there is at least 5mm space between cast andmounting plate in area indicated by spatula.

Hinge maxillary frame back 180°. Mix mountingstone to the consistency of whipped cream.Place stone first in retention areas of mountingplate.

Place sufficient amount of soft stone on mountingsurface of maxillary cast. (The amount ofmounting stone should be only enough to makea "solid" connection with the mounting platestone. Reinforcement stone can be added laterafter the initial stone has hardened.)

Hinge maxillary frame upward and forward overcast and bite fork assembly (curved arrow).



Hinge maxillary frame forward to join the two padsof soft stone (curved arrow).

Close articulator until incisal pin contacts surfaceof mounting fixture (arrow).

Remove any overhanging soft stone with spatulaor finger carefully to avoid disturbing cast in bitefork registration. (Mounting stone should notextend beyond perimeter of mounting plate andvestibule of cast.) Leave cast undisturbed untilmounting stone has completely hardened.

After mounting stone has hardened, releasecentric latch and rotate maxillary frame backwardwith cast attached (arrow).

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Remove maxillary cast from articulator. Cut backexcess stone (if any) projecting beyond perimeterof mounting plate and vestibule of cast.

For more secure and esthetic mounting, mixquick-set plaster to the consistency of whippedcream. Add reinforcement layer of plaster to castusing trimmed edge of cast and perimeter ofmounting plate as guides for plaster spatula.While plaster is still soft, use fingers underrunning tap water to smooth plaster surfaces.

Remove any residual plaster from mounting plateand ar ticulator before replacing cast onarticulator. When standard mounting plates arebeing used be sure to rotate mounted cast indirections the mounting plate screw is beingturned (arrows). Tighten mounting plate screwsecurely.

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Remove mounting fixture, bite-fork assembly andbite-fork support. Replace incisal table.


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Face-Bow Instructions - Panadent · face-bow downward and forward from patient’s face (arrow)....

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Transcript of Face-Bow Instructions - Panadent · face-bow downward and forward from patient’s face (arrow)....