DENAR® TRACK II SYSTEMinstruction manual

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ACKNOWLEDGEMENTSthe track ii system was developed in answer to the many requests from clini-cians, dental educators and practicing professionals throughout the world. some of their design criteria included the need for an arcon tracking (enclosed condylar guidance) articulator and one that could accurately reproduce centric relation. schools, particularly, asked for an articulator capable of accepting casts mounted on another articulator, i.e., transferability of casts from one articula-tor to another which is accomplished by means of a calibration system.

We set these needs as our objectives and proceeded to accomplish the task with the help of many professionals. We are most grateful for the direction and assistance they provided us.

a special word of appreciation is expressed to Dr. alvin Filastre and his wife Helga for their contribution in the early design phases as well as continual support throughout the development.

special recognition is directed to the teaching staff of the Pankey institute, with acknowledgement going to Drs, l. D. Pankey, loren miller, Fred cory, Jim Potts, mel steinberg, Ed Quinn and mr. Jack snyder, for their support in ensur-ing that the system can be used by practitioners wishing to render quality dentistry through the incorporation of the principles of occlusion.

We wish to acknowledge Professor muroaka in Japan for his contributions and Dr. sheldon Winkler for the time he

spent working with us. additionally, with-out the advice and support from many of the current users of Denar® instru-mentation, this project would not have achieved the success criteria for which we strived.

throughout the development process many different ideas were expressed. But, through it all, the common objec-tive was to provide dentistry with a high quality occlusal instrumentation system. We believe we have accomplished this task.

FEATURES AND BENEFITSDESIGN•Excellentlingualvisibility•Arconconstruction•Enclosedcondylarguidance•Securedupperandlowerbows•Stableandbalancedinopenposition

with mounted casts

CONSTRUCTION•Precisionmanufacturing•Rigidanddurable,yetlightweight•Easytoclean

FUNCTION•Centricpositioneroffersuniqueand

efficient method for precise medio-lat-eral bow alignment when an immediate side shift is introduced

•Positivecentriclockoneachcondyle

•Excellentstabilityintheinverted position

•AlignmentverifiedusingField

inspection Gage

ADJUSTMENT CAPABILITIESProtrusive adjustment–

0 to 90 degreesProgressive sideshift–

3 to 30 degreesimmediate sideshift–

0 to 2 mmcr co adjustment–

increments of .5 mm (maximum 2 mm)Extra long range of motion (15mm)

allows for maximum lateral movement.

ADAPTABILITYoptional pin and incisal table combina-tions are available for added versatility. the Denar® standard incisal pins are curved to simulate the arc of closure for varying vertical dimensions.

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TRACK II ARTICULATORupper Bow

incisal Pin

incisal table

immediate sideshift adjustment

sideshift adjustment Key

centric lock

Progressive sideshift adjustment

Protrusive adjustment

co/cr adjustment

centric Positioner

lower Bow

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Table of ContentsI. The Track II Articulator

•CentricLockOperation 6•CentricPositioner 6•Adjustments 6•ArticulatorManipulation 8

II. The Slidematic Facebow•AssemblingonthePatient 10•TransferringtotheArticulator 12

III. Mounting the Casts•MaxillaryCast 13•MandibularCast 14

IV. Setting the Condylar Controls•Protrusive 15•ProgressiveSideshift 15•ImmediateSideshift 16

AppendicesA.FieldInspectionGage 18B. D31 aB Facebow/Earbow 19c. care and maintenance 20D. accessories 20

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I THE DENAR® TRACK II ARTICULATOR

Centric Lock Operationthe articulator has a separate lock for each condyle. they can be engaged simultaneously or independently of one another. to lock the articulator into centric relation, rotate the centric lock screws and the centric occlusion adjust-ment screws (Fig. 1) counterclockwise so that the condylar balls can travel without interference along the fossae tracks.

FIG. 1

Centric Positionerthe centric Positioner (Fig. 2) will accurately confirm the centric position of work in progress. When immediate sideshift has been introduced the cen-tric positioner offers a unique and effi-cient method for precise medio-lateral bow alignment. it can be momentarily engaged or locked into place. to engage the centric positioner, simply push the pin up into the centric positioner slot (Fig. 3). this confirms centric. to lock the centric positioner twist the knob one half turn. to release the centric positioner either twist the knob in the reverse direc-tion or complete the turn all the way.

FIG. 2

FIG. 3

Adjustments•ProtrusiveAdjustment

the inclination of the protrusive condy-lar path can be adjusted by loosening the protrusive adjustment lock screw (Fig. 2). the protrusive condylar path inclination scale is lateral to the pro-trusive adjustment lock screws, and is calibrated in increments of 5 degrees. Thescaleindicatesfrom0-60degrees,however, the condyles will adjust to a full 90 degrees.

CO/CR Adjustment

PROtRusive Adjustment sCRew

CentRiC LOCk sCRew

CentRiC POsitiOn

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•ImmediateSideshiftAdjustmentimmediate sideshift is set by moving the condyle balls out laterally. this is accomplished by inserting the sideshift key into the slot of the condyle ball (Fig. 4) and turning counterclockwise. Each360degreeturnrepresents1.0mm of immediate sideshift. maximum adjustment is 2.0 mm per condyle. Zero degrees is obtained by turning the slot clockwise until it stops.

FIG. 4•ProgressiveSideshiftAdjustment

the angle of inclination of the medial fossa wall to the sagittal plane can be adjusted by loosening the progressive

sideshift adjustment lock screws (Fig. 5) and moving the fossa track from 5 to 30 degrees(Fig.6).Thescaleforthepro-gressive sideshift adjustment is poste-rior to the adjustment lock screw and is calibrated in 5 degree increments.

FIG. 5

FIG. 6

•CentricOcclusionCentricRelationZeroOut(NeutralPosition)

1. set progressive sideshift adjustment to 0˚.

2. set the protrusive inclination adjust-ment at 0˚.

3. Back out the red cr/co screw to a neutral position until the end of the metal housing (containing the 1 mm graduation marks) is visible.

4. tighten the red cr/co screw in a clockwise position until the first graduation line on the metal hous-ing is flush with the back wall of the fossae track. turn the screw in either direction (choosing the short-est distance with the least amount of rotation) until the black dot on the face of the red cr/co screw is in the "12 o'clock" position.

Adjustment1. Forward movement of the condyle

is obtained by turning the cr/co adjustment screws clockwise. make sure that you loosen the centric lock screw so the condyle balls can movefreely.Each360degreeturnis equivalent to 0.5 mm of forward travel. use the black dot on the red

adjustment screws to measure each 360degreeturn(Fig.7).Eachlineon the scale represents 1 mm of for-ward travel.

FIG. 7

FIG. 8

2. the condyle can be locked with the centric locks to a maximum 2 mm forward from centric relation (Fig. 8).Ascaleislocatedonthelateralwalls of the fossa housing and reads from 0 to 10 mm.

•ArticulatorManipulationthe track ii has enclosed condylar guidance enabling the operator to easily guide the articulator through lateral excursive and protrusive move-ments. note: a design feature of this instrument is the ability to add addi-tional thumb pressure to the upperbow which more closely simulates the ana-tomical muscular movements.

to use the track ii properly the opera-tor must master the proper movement techniques. the first are lateral excur-sive movements. to effect both left and right excursive movements a right handed person should grasp the back of the articulator with the underhand grasp as illustrated (Fig. 9). remember that the articulator and mounted casts are only a facsimile of bone, joints and teeth. there are no muscles.

the operator must provide the muscle force. it is very important that the back

of the articulator be guided with posi-tive pressure of the left thumb to insure that the condyles function in accord with the instrument settings. the oper-ator should maintain a slight down and

FIG. 9

FIG. 108

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forward pressure with the left thumb in lateral excursive movements. in addi-tion, when the incisal pin is pushed to the left, the back of the articula-tor should also be pushed to the left (underhand push grasp) (Fig. 10).conversely, when the incisal pin is pulled to the right, the back of the articulator should be pulled to the right (underhand pull grasp) to ensure that the articulator functions in accord with its condylar adjustment settings. to effect a straight protrus movement the upper bow is moved straight posteri-orly guided by both hands (Fig. 11).

FIG. 11

•AdjustmentLimitationsthe track ii has an extremely long condylar track allowing the condyles 15 millimeters of protrusive and lateral movement. this movement is limited to 11 mm when progressive sideshift is set to 30°.

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II THE SLIDEMATIC FACEBOW

FacebowTransferthe facebow transfer procedure estab-lishes the relationship of the maxillary dentition to the horizontal reference plane so that the maxillary cast may be mounted on the articulator in the cor-rect anatomical position. the slidematic Facebow provides a fast, easy and extremely accurate means of transferring the proper anatomical relationship to the articulator. any Denar® facebow may be used for mounting the maxillary cast to the track ii. in this chapter only the pro-cedures relating to the slidematic face-bow are described. However, the Denar® D31aB Facebow/Earbow may also be used (see appendix B).

Assembling the Slidematic onthePatientmark the anterior reference point on the patient’s right side using the reference Plane locator and marker. the point is 43 millimeters above the incisal edge of the right central or lateral incisors (see Figure 12). on an endentulous patient, measure up from the lower border of the

MEASURINGBOW

TRANSFER JIGASSEMBLY

1. earplug2. anterior reference pointer3. intercondylar distance scale4. “finger” lockscrew5. center “lock” wheel6.Sight

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2

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6

1

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1. dentulous bitefork2. bitefork index notch3. vertical shaft4. articulator index

reference plane locater reference plane marker

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upper lip when it is in repose.

cover the metal with two thicknesses of baseplate wax softened in warm water (approximately 135˚F or 55˚ c). With the bitefork arm to the patient’s right, place the fork in the mouth, aligning the patient’s midline with the index notch, so that it is parallel with the patient’s coro-nal and horizontal planes (see Figure 13). Be certain to obtain a light indexing of the patient’s maxillary arch and then ask the patient to hold the bitefork in place.

attach the vertical shaft to the measur-ing bow with the clamp marked #2 on the patient’s right and tighten the finger screw (see Figure 14). it is necessary to tighten this finger screw to secure the vertical shaft to the measuring bow

and also to avoid movement. this same movement will occur after inserting the vertical shaft in the articulator index as shown in Figure 23. Be sure to tighten the finger screw.

loosen the finger screws on the clamps marked #1 and #2 on the vertical shaft. With your thumb, loosen the center wheel on the top of the measuring bow and slide the bow open to accommodate the width of the patient’s face. assemble the facebow on the patient by sliding the bitefork arm through the hole in clamp #2 as the measuring bow’s earpieces are placed in the patient’s auditory meatus (see Figure 15). tighten the center wheel on the measuring bow and loosen the finger screw on the anterior reference

pointer. raise or lower the bow so that the pointer or sight aligns precisely with the anterior reference point (see figure 16)andtightenclamp#1,thenclamp#2(seeFigures17and18).Whentight-ening clamps #1 and #2, care must be taken not to displace the bow to either side by having the vertical shaft rest on

FIG. 12 FIG. 13 FIG. 14

FIG. 15

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the fingers as shown in Figure 17. the patient’s inter-condylar distance is the measurement indicated on the scale (see Figure 19). record this measurement.

loosen the finger screw on the mea-suring bow, slide the bow open, and remove the entire facebow from the patient.

Detach the measuring bow from the transfer jig by loosening the finger screw (see Figure 20). Having completed the procedures involving the patient, the bitefork assembly (see Figure 21) may be labeled with the patient’s name and set aside while the measuring bow portion can be used with an additional bitefork assembly for the next patient.

Note: the metal bitefork, vertical shaft and earpieces can be sterilized in an autoclave EXcEPt for the black fin-ger screws on the #1 and #2 clamps. remove the finger screws (and spacers) before autoclaving or use cold steriliza-tion.

Sterilizebiteforkbeforeeachuse.

FIG. 16

FIG. 17

FIG. 18FIG. 20

FIG. 19FIG. 21

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III MOUNTING THE CASTSa benefit of using the Denar® slidematic Facebow is that multiple transfer jigs may be used with only one measuring bow. although it is not always recom-mended, the mounting of the maxillary cast can be delegated to the laboratory, involving no loss of accuracy and no period of time without facebow transfer capability in the dental office. the labo-ratory can attain an articulator index for their own Denar® articulator and mount the maxillary cast using only the bitefork assembly from the dental office. Each articulator index positions the bitefork assembly on any Denar® articulator so that the relationship with the condyles recorded on the patient is accurately reproduced on the articulator.

Mounting the Maxillary Cast

replace the incisal table on the articula-tor with the articulator index (see Fig. 22). With the numbers on clamps #1 and #2 in the upright position, secure the reference pin of the bitefork assembly in the hole of the articulator index. tighten the lockscrew on the front edge of the index (see Fig. 23).

attach a mounting plate to the upper bow. Be sure that the incisal pin is at the zero position and that the upper bow is level and parallel to the table top.

FIG. 22

the position that the incisal pin sits on the articulator index is determined by the type of incisal pin being used. the incisal pin (110092) with the long centric adjust-ment foot (used with the 110109 or 110241 incisal table) sits on the highest section of the movable insert. the round long incisal pin (300042, used with the 110193 incisal table) sits in the center of the index. the round, short incisal pin (300200-1), used with the 110240 incisal table) sits on the movable metal piece in

the center of the index (see Fig. 24). in situations where the slidematic facebow is being used with the same articulator, secure the movable metal insert with a drop of wax once the insert’s appropri-ate location has been determined.

FIG. 23

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FIG. 24Place the maxillary cast in the wax index on the bitefork, close the articulator, and mount the cast with stone to the mounting plate (see Fig. 25) . normally, a maxillary cast support is not necessary, although one may be used, if desired. once the stone has hardened, remove the transfer jig and replace the incisal table in the articulator.

Mounting the Mandibular Castattach a mounting plate to the lower bow. a centric relation checkbite record is used to mount the mandibular cast. With the maxillary cast attached to the articulator and the centric locks engaged, invert the articulator and place the centric relation checkbite record between the maxillary and mandibular

casts(SeeFig.26).Stabilizethepositionof the casts with either a rubber band or sticky wax. adjust the incisal pin to accommodate the increased vertical distance caused by the thickness of the centric relation bite record.FIG. 25

FIG. 26

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Double check to be certain that the condyles are seated against the rear of the fossae, and using stone, proceed to mount the mandibular cast to the mount-ing plate on the articulator (see Fig. 27).

IV SETTING THE CONDYLAR CONTROLS

the track ii articulator features three condylar path of movement adjustments: 1) protrusive condylar path; 2) progres-sive sideshift and 3) immediate sideshift. the operator may select any of the fol-lowing alternate methods for making these adjustments dependent upon his or her specific requirements and prefer-ence.

PROTRUSIVE1. arbitrary method. set to 30 degrees.

(this inclination is sufficiently low to eliminate almost all protrusive interfer-ence.)

2. checkbite method. loosen the protru-sive and progressive sideshift adjust-ments on both sides of the articulator. Disengage the centric positioner. set the protrusive checkbite record on either cast. move the opposing cast in the protrusive position and seat it into the checkbite record. if the cast does not seat accurately, apply very light pressure to the bow of the articulator and rock the protrusive adjustments back and forth until the most accurate

seating of the casts into the record isachieved(Fig.28).(Thisproceduremust be done very carefully so as not to modify the record.) lock the protru-sive and progressive sideshift adjust-ment lock screws.

PROGRESSIVESIDESHIFTa. average anatomic setting: = 7°b. arbitrary setting: = 7+°c. lateral checkbite (procedure

explained below without incorporating the immediate sideshift)

FIG. 27

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IMMEDIATESIDESHIFT1. arbitrary adjustment. setting this

adjustment to zero provides for tight coupling of the centric holding cusps in the position of maximum intercus-pation. increasing the immediate side-shift adjustment in treatment provides for greater lateral freedom in the posi-tion of maximum intercuspation.

For example:

0 mm = tight intercuspation 0.5 mm = slight lateral freedom 1.0 mm = moderate lateral freedom 1.5 mm = greater lateral freedom

2. lateral checkbite method. condylar path of movement studies* have shown that in almost all patients once the immediate sideshift has occurred the orbiting (balancing) condyle moves forward on a path inclined 7° medially to the saggital plane (progressive side-shift).

*luncleen, Harry c. and Wirth, carl G. condylar movement Patterns Engrated in Plastic Blocks, Journal of Prosthetic Dentistry, December 1973, pages870-873.

therefore in this technique, due to inher-ent difficulties and potentials for error in obtaining accurate lateral checkbite records and setting the articulator to these records, more accurate results can be achieved by assuming the patient has a progressive sideshift of 7° and using the lateral records only to set the imme-diate sideshifts.

When setting the immediate sideshift adjustment to lateral checkbite records:

a. set both sides of the articulator to the following adjustments:

Progressive sideshift: 7° locked Protrusive: 30° unlocked

immediate sideshift: 2 mm (screws turned counter-clockwise two full revolutions).

b. seat the right lateral checkbite record between the casts with the articulator in a right lateral mandibular bow posi-tion. While maintaining a slight pres-sure on the bows, rock the left protru-sive path adjustment back and forth until the most accurate seating of the cast into the record is achieved. (this procedure must be done very carefully

so as not to modify the record.) on occasion you will note that the cast will not seat accurately on the rotat-ing side. (in this instance, right side.) this is because the patient’s rotating condyle may have also moved up or down and backward or forward as it moved out and this condylar posi-tion was reflected in the checkbite record. However, seat it as accurately as the articulator will allow. to set the immediate sideshift turn the right adjustment screw clockwise with the key provided until the screw head lightly touches the lateral aspect of the condylar element. now remove the checkbite record and lower the incisal pin to disengage the posterior teeth and lock it in this position. With the key provided turn the immediate sideshift adjustment screw clockwise and count the revolutions required to achieve the most close position. the thread of the screw provides for 1 mm of immediate sideshift for each com-plete360°revolution.Aquarterturn(90°) represents 0.25 mm of immediate sideshift. now the measurement has been made and should be recorded on the patient’s record. resetting the

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immediate sideshift to this measure-ment will allow the instrument to more faithfully simulate the immediate side-shift of the patient. the measurement of the left immediate sideshift is done in the same manner utilizing a left lat-eral checkbite record.

DISCUSSION: a lateral checkbite record is a positional record in that it records only one position of the orbit-ing condyle. this condylar position reflects the patient’s unique combina-tion of any immediate and progressive sideshift movements. However, there are many combinations of immediate and progressive sideshift articulator adjustments which can achieve this same condylar position. in the past many articulators had only progressive sideshift adjustments without any pro-vision for immediate sideshift move-ment. When lateral checkbite records were used to set such an instrument the total sideshift was reflected in the articulator only as progressive side-shift. one school of thought contends that in this usage the cusps tend to be more tightly coupled in the position of maximum intercuspation, generally

requiring more occlusal correction on insertion of the restoration and the cuspal inclines of the posterior teeth tend to be more reduced because of the greater progressive sideshift adjustment.

restorations developed on an instru-ment that produces an immediate sideshift will typically feature a greater freedom (and possibly less occlusal correction on insertion) in the posi-tion of maximum intercuspation. in this usage, since the total sideshift is divided into immediate and progres-sive components, the progressive component decreases as the immedi-ate component increases to arrive at the same condylar position recorded by a lateral checkbite record. the contention is that this will result in increasingly steeper cusps especially in the area of the balancing inclines of posterior teeth on the orbiting (balanc-ing) side.

as previously stated, when an articula-tor featuring both immediate and pro-gressive sideshift adjustments is set to lateral checkbite records, one proce-dure is to set the progressive sideshift

to the average anatomy dimension of 7°, and use the lateral records to measure only the immediate sideshift components. the protrusive adjust-ment is set to the protrusive checkbite records. these articulator settings are used in diagnostic procedures and occlusal analysis. in treatment procedures the progressive sideshift adjustments may be increased to 7°+ to insure non contact of the balanc-ing inclines (buccal lingual) of cusps on the orbiting side. the greater the increase in the progressive sideshift-movement the greater the clearance of these cuspal inclines (ie., a 15° setting will provide for greater clearance than a 10° setting).

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APPENDIX A– FIELD INSPECTION GAGEan added benefit of all Denar® articula-tors is that they can be calibrated so that mounted casts can be transferred with precision from one articulator to another. the Denar® Field inspection Gage (D7) accomplishes this calibration by align-ing the horizontal and vertical relation-ships by means of three dimensional adjustments of the articulator. thus, a restoration can be in progress on the laboratory’s articulator while the doctor’s or student’s articulator is free for other restorations. note: When calibrating the track ii articulator the vertical adjust-ment is made by an elliptical action of the condylar shaft where it connects into the lower bow. to adjust vertical height, loosen the two condylar shaft lock screws (Fig. 29). insert the sideshift key into the slot at the end of the condylar shaft (Fig. 30). turn the condylar shaft slowly clockwise. (Do not turn counter-clockwise for vertical adjustment.) the vertical movement can be observed by watching the dial indicator on the Field inspection Gage. continue to turn the

condylar shaft clockwise until a zero set-ting is obtained. this procedure will be the same for both sides. note: When you change the height of one condyle it affects the readings on both dial indica-tors. When at zero settings check to see that the instrument dials stay within plus or minus 1-1/2 thousandths of an inch (± .0015).

the horizontal adjustment is made by loosening the horizontal adjustment lock screws on both sides of the articulator the minimum amount necessary to allow horizontal movement of the horizontal crossbar (Fig. 31). Engage the centric positioner of the articulator. While main-taining slight downward pressure on the horizontal crossbar of the lower member of the articulator to keep the horizontal crossbar seated flush on the crossbar supports, slide the horizontal crossbar in the horizontal plane until the centric dots are on the junction of the crossbar tar-gets as viewed through both scopes and stay within five thousands of an inch (± .005 inch). then while carefully maintain-ing the crossbar position incrementally tighten in a criss-cross sequence the four horizontal adjustment lock screws.

FIG. 29

FIG. 30

FIG. 31

HORizOntAL Adjustment LOCk sCRews

COndyLAR sHAft LOCk sCRews

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For additional operation procedures on the Field inspection Gage, please refer to the instruction manual enclosed with the gage.

APPENDIX B– D31AB FACEBOW/ EARBOWthe Denar® D31aB Facebow/Earbow is another accessory facebow that can be used to establish the relationship of the maxillary structures to the horizontal and vertical reference plane so the maxillary cast may be mounted on the articula-tor in the correct anatomical position. the Denar® D31aB Facebow/Earbow provides an extremely accurate means of transferring the casts through either earbow or facebow registration.

the use of the D31aB involves three simple procedures:

a. locating three reference points: one anterior and two posterior, either the ears or the hinge axis.

b. assembling the facebow/earbow on the patient.

c. transferring the facebow/earbow to the articulator.

the Denar® D31aB Facebow/Earbow consists of standard facebow/earbow sidearms, crossbar, dentulous bitefork, and all necessary accessories. order part #101437.

When using as an earbow transfer to hole on side of fossa as pictured.

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APPENDIX C– CARE AND MAINTENANCEYour Whip mix articulator is a precision instrument and requires care and main-tenance. Periodic cleaning and lubricat-ing as described below will assure pro-longed life and dependable service from the instrument. Failure to follow these instructions will void your warranty.

Cleaning– use a mild soap and water solution with the aid of a brush to dis-solve accumulations of wax and to wash away carborundum grit. then air dry and lubricate. Do not use strong deter-gents, alkalies, gasoline or naphtha as cleaning agents!

Lubrication– lubricate the working and bearing components with a thinfilm of sewing machine or high speed hand-piece type oil. Wipe off excess oil to prevent accumulations of dust or grit. a thin coating of petroleum jelly must be applied to all articulator surfaces that will be contacted by the gypsum mounting material.

Storage– store the articulator in a clean, dry atmosphere free of plaster and carborundum dust; away from acids, alkalies, or corrosive medicaments. Waitafulldayaftermountingcastsbeforestoringthearticulatorinacar-rying case. moisture dissipation from the stone in an enclosed area causes alkalinity of the stone mixture which can damage the articulator surface.

APPENDIX D– ACCESSORIESIncisalPinsandTables

P2T2

Pin: long centric/adjustable Foot (110093)

table: custom Platform, step (110241)

P2T3

Pin: long centric/adjustable Foot (110093)

table: adjustable (110109)

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P4T4

Pin: short round with support (300270)

table: custom Platform, flat (110240)

P6T6

Pin: tapered (110509)

table: adjustable (110635)

slidematic Facebow with three Denar®transferjigs;(200011-6)

D31aB Facebow/Earbow (see appendix B)

Disposable mounting Plates, bag of 10(1100026-10)

maxillary cast support (101217)

articulator carrying case (110293-1)

magnetic mounting system

ConverterPlates(20002367)

Disposable magnetic mounting Plates, bagof20(20002368)

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WARRANTYWhip mix corporation warrants the artic-ulator system to be free from defects in material and/or workmanship for a peri-od of one year. in the event of a defect, please notify the factory in writing of the defect prior to returning the instrument. Whip mix corporation will, at its option, either repair, replace or issue credit for such defects.

Because Whip mix corporation is con-tinually advancing the design of its products and manufacturing method, it reserves the right to improve, modify or discontinue products at any time, or to change specifications or prices without notice and without incurring obligations.

Whip mix corporation - West1730 East Prospect rd., suite 101

FortCollins,CO 80525Toll-Free:1-800-201-7286

Fax: 1-970-472-1793www.whipmix.com

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