during the past several years,

the technology and techniques surrounding fixed prostate 

tonics have improved considerably.

Many of these improvements have been enhanced to the use of 

the highly accurate,

fully adjustable articulator with 

such an instrument.

For example,

the Hannah 1 30 21 1 can 

study and diagnose a variety of dental problems,

secure in the knowledge that the instrument when properly 

used is extremely accurate.

Once the casts have been fabricated in the articulator 

set,

the design or implementation of the treatment plan can 

be carried out with precision and confidence.

This will be a demonstration of the procedures involved in the 

use of the Hannah 130 21 fully 

adjustable articulator.

The hand now 1 30 21 we will be 

demonstrating is a fully adjustable 

articulator that is set using static positional 

records.

Techniques generally employed with this instrument 

include location of hinge axis,

facebook transfer the making of centric 

relation records and registration of the border 

positions.

Some of the desirable features of this articulator are an 

adjustable intercon dealer,

distance,

a Bennett guide adjustment and horizontal and 

vertical axis adjustments for each con dial 

an articulator,

which is set using panda graphic tracings might also 

incorporate these adjustments.

However,

when using the panda graphic system,

it is necessary to show the entire movement of the mandible 

within the border points.

The Hannah one 30 20 one can be 

used successfully for most major oral 

rehabilitation procedures.

If the system is properly understood and the 

articulator is used carefully.

The instrument is sturdy,

easy to adjust during the required laboratory 

procedures and provides an excellent centric 

lock.

Also,

since this system makes use of split casts,

the accuracy of the records and the articulator 

settings can be easily verified.

The first step in the location of hinge axis is the 

segmentation of a segmented clutch trey into the 

patient's mouth.

The clutch trey can be cemented either with impression plaster 

or with commercially available gel.

Um The tray is filled with the cementing medium and 

placed into the patient's mouth.

It should be held in position until the final set has been 

achieved.

The face bow is now attached to the clutch trey 

stem.

Notice that the stylists leaves are in the approximate 

location of hinge axis.

Once the facebook has been properly positioned,

it can be secured by tightening the clamp on the stem 

tray.

The style I are now inserted into their respective 

sleeves and secured at their maximum depth.

The lock nut for the condor sleeve is loosened,

allowing the style I to reach a position close to the 

skin.

The condor locknut is then secured.

The style I can be adjusted in two ways.

First by means of a horizontal thumb screw 

and second by using the vertical thumb screw.

These two thumb screws allow for adjustment of the style I in 

an anterior posterior direction,

as well as a superior inferior direction 

to locate the hinge axis point recruited,

the patients mandible and noticed the ark of the stylists 

around the point of hinge axis.

This diagram shows the relationship of the retreated 

mandible to hinge axis.

You can see that the hinge axis point corresponds to the 

center of rotation of the mandibular con dial.

It is this point we want to tattoo for later reference.

In this case you can see that there is both vertical and 

horizontal movement of the stylists around the point of hinge 

axis.

Think of the hinge axis point as the center of a clock.

In its present position,

the stylist is in the 4 to 5 o'clock position,

so we must use the vertical thumb screw to bring the stylus 

up.

As we raise the stylist,

we can see that it is rotating slightly in the three o'clock 

position,

so we moved the stylist posterior lee using the 

horizontal thumb screw,

There is still a very small arc remaining in the 6:00 

position,

so we raised the stylist slightly.

Now that the final adjustments have been made,

there is no movement of the stylus.

Once the stylist becomes stationary,

it is directly over the point of hinge axis.

This procedure should be repeated on the other side.

Once the hinge axis has been located,

this point can be tattooed,

it should be noted that the location of hinge axis can be 

determined with the patient in either a supine or an 

upright position.

However,

to avoid any error caused by a shift of the facial 

tissues.

During the facebook transfer procedures,

the patient should be upright for tattooing.

First,

remove the stylists from the sleeve and clean the 

area with an alcohol sponge.

Then replace the stylus 

and reconfirm hinge axis by retreating the 

patient's mandible once again,

partially retract the stylists 

and after mixing the red tattooing die with 

alcohol,

Place a small amount of this pigment on the tip of the 

stylus.

Retread the patient's mandible and make a small 

dot on the patient's skin.

The stylist can now be removed.

The tattooing will be done with the sterile 27 

gauge needle.

The tattooing dyes picked up on the tip of the needle 

the skin is tensed and then pierced,

repeat the procedure to be sure the dye is well under the 

skin,

rotating the needle will help to deposit the die,

clean any excess dye with an alcohol 

sponge.

As you can see,

we have a permanent mark at the point of hinge 

axis.

After tattooing the hinge axis on the other side,

remove the face both from the stem of the clutch trey,

the labial and lingual portions of the tray can 

be separated by removing the two screws at the side 

of the tray.

The hardened plaster can now be removed in segments,

remove the clutch trey and clean any remaining 

material from the patient's teeth.

We will now show the component parts of the hand.

Now 1 30 21 articulator 

into candler distance,

candler guidance 

centric lock 

retention.

Lock.

Bennett guides 

in size sculpin 

inter Kanzler distance 

vertical axis,

support 

horizontal axis,

support 

candler ball 

candler shaft 

extendable shaft 

in size L.

Table.

The first step in making a split cast is to make 

accurate hydroxyl Lloyd impressions of both the maxillary and 

mandibular arches.

These impressions should be made using vacuum improved di 

stone to avoid any irregularities caused by 

air bubbles trapped in the stone.

The finished cast should be trimmed and V shaped 

notches should be made in the peripheral border of the maxillary 

cast.

Carefully smooth the bottom of the cast and the edges of the 

notches with 400 silicon carbide paper 

lightly lubricate the bottom of the cast and pour an 

index using a stone of a different color.

This color difference will make the accurate seating of the two bases 

easy to inspect.

You can see that we have an accurate seating of the cast.

The following items are needed for the transfer of the maxillary 

cast to the articulator.

The hand now 1 35 automatic transfer 

bow bite fork,

orbital pointer tightening 

wrench modeling compound,

zinc oxide and Youth Journal bite registration 

paste.

Once the modeling compound has been molded around the bite 

fork used the cusp tips of the maxillary 

cast to make preliminary impressions in the 

compound final indexing will be done in the 

patient's mouth.

Place the bite fork in position against the patient's 

maxillary teeth and asked him to close down lightly 

on the compound.

The bite fork and modeling compound will serve as support for the 

facebook.

The hardened compound is trimmed so that only 

the impressions of the cusp tips will remain as an 

index for the final seating of the cast,

zinc oxide and Youth Journal bite registration 

paste are mixed and a small amount is 

used to cover the indentations of the cusp tips.

This is held in position in the patient's mouth until 

final set has taken place.

When the registration paste has set,

remove the bite fork and trim away any excess 

paste to be sure there is no interference between the 

maxillary cast and the bite fork.

The facebook was secured to the bite fork and the style 

I are placed in their respective sleeves and secured.

Make any adjustments needed to bring the style I into 

position over the hinge axis points 

position the orbital pointer so that it 

corresponds to the inter orbital notch.

This creates the axis orbital plane 

which in the patient corresponds to the 

Frankfurt plane.

Finally check to be sure the facebook is 

secure and properly positioned over the hinge axis 

points.

The following items are needed to mount the maxillary 

cast on the articulator using the Kinnah Matic face 

bow,

the mounting block,

the mounting pin,

the axle,

a liners and axial crib 

and finally the orbital indicator.

The following adjustments should be made to prepare the 

articulator for the facebook transfer 

The inter conjurer distances of the maxillary and 

mandibular members are set to 55 

cm.

The vertical and horizontal axes are set 

to 0° 

And the inside cell table is set to 

10°. 

Also the pro true sieve of the candler 

guide is set at 30 degrees 

And the Bennett Guides are set at 40°. 

The mounting block and the axial cribs 

are attached to the lower member of the articulator.

The condor ball is removed and the 

axial crib inserted.

Repeat this procedure for the left side of the lower 

member.

To prepare the upper member of the articulator,

attach the mounting pin and the orbital indicator in 

their respective positions.

The axial align ear's are then attached 

to the candler pointers of the facebook.

The inter Kanzler distance of the lower member has 

increased to accommodate the inter facial 

dimensions of the patient In this 

case to 63 cm.

Also the extendable axes are expanded 

so as to leave one millimeter on each side.

This distance will be accounted for later.

When the facebook was removed from the articulator,

the cast support of the mounting block is raised to 

touch the bite fork,

the upper member of the articulator is placed into 

position.

The infra orbital pointer will now touch the orbital 

indicator.

The mounting pin is dropped to touch the bite fork 

stem.

These two points have given us the stopping point on the 

arc of closure,

secure the centric lock pins to ensure 

stability 

with the mounting pin in place,

the orbital indicator may be removed.

To facilitate mounting 

the split portions of the maxillary cast have been 

joined together with sticky wax 

to avoid the possibility of tension between the dry 

and the wet stone during mounting,

wet the base of the cast,

the mounting of the maxillary cast to the upper member of the 

articulator will be done using two 

applications of gray rock quick stepping 

stone.

After the first application has set refined 

the mount with a second mix of stone to ensure 

increased stability and neatness.

The centric relation record is made from two sheets of 

base plate wax melted together.

First heat the ends of the separate pieces 

and attach the two sheets,

then soften the remaining ends and 

fold them into the middle.

Make an outline of the maxillary cast in the softened 

wax and trim around the edges of the record,

melt the edges of the record to be sure there is no 

separation of the sheets 

retread the patient's mandible so there is an 

uninterrupted arc of closure,

lightly placed the record over the maxillary teeth,

Only slight indentations of the cusp tips are needed.

Apply firm distal pressure to the mandible 

as you lightly bring the mandibular teeth into 

contact with the soft wax.

Repeat this procedure until the cusp tips are 

clearly outlined,

chill the wax in water and return it to the 

patient's mouth to be sure the record is accurate 

after trimming the record to be sure only the cusp 

tips are registered.

Make a final refinement of the record using bite 

registration paste.

A second centric relation record should be made in order 

to confirm the accuracy of the first 

to mount the lower member of the articulator.

First remove the axle cribs and replace them 

with the condor balls.

Then place the mandibular cast on the 

maxillary cast and measure the distance from the 

base of the cast to the ring,

inspect the centric relation record to be sure 

none of the bite registration paste will interfere with 

an accurate seating and then place the record on the 

maxillary cast.

The mandibular cast is then placed onto the 

record.

The inside isil pin is opened to accommodate the 

thickness of the wax.

The mandibular cast can now be mounted the same way as the 

maxillary cast,

wet the cast to avoid tension and cover the 

top of the cast with gray rock stone closed 

the articulator and allow the stone to harden.

A second mix of stone should be used to refine the 

mounting.

Both the mandibular and maxillary casts are 

now neatly mounted on the articulator.

One of the advantages of the split caste system 

is the ease with which existing records can be 

verified.

For example,

with the second centric relation record between the mandibular 

and maxillary casts.

You can see that as we open and close the upper member of 

the articulator.

The split will seat perfectly into the base of the 

cast.

This verifies the accuracy of the centric relation 

record 

to ensure that the lateral records made from the patient are 

purely lateral with no protruding component.

It is best to preregister these records on the 

articulator.

The right lateral record,

for example,

can be preregistered by first loosening the 

candler element on the left side of the articulator 

and then moving the upper member of the articulator 

so as to bring the casts into a cusp 

tip to cusp tip position on the left side,

raise the wing of the inside cell table until it 

touches the inside cell pin and mark the point of 

contact with a pencil.

Place the softened wax record on the mandibular 

cast and using the pencil mark as a 

reference,

moved the maxillary cast into a lateral 

position.

Close the articulator until the cusp tips of the 

cast make a slight indentation in the wax 

to preregister the left lateral record,

tighten the condor.

Guide on the left side of the articulator and 

loosen the one on the right,

move the upper member of the articulator into a right 

lateral cusp tip to cusp tip 

position and mark this position on the inside cell 

table.

Again place the wax record on the mandibular 

cast and using the mark already made as a 

reference point,

register the right lateral position on the record 

to obtain a preregistered pro truce of record,

loosen both centric locks and move the upper member 

of the articulator posterior lee until the 

incisor teeth are cusp tip to 

tip,

raise the inside cell table and again mark the 

point of contact.

Use this point as a reference to register the protrusion of 

record 

Here you see the three preregistered records 

the right lateral,

the left lateral and the pro truces 

to refine each record in the patient's mouth,

mixed bite registration paste and spread a 

thin layer over the record.

Place the record in the patient's mouth and have him 

close into the preregistered indentations.

After the paste dries,

carefully inspect the records to be sure there are 

no irregularities that might interfere with an 

accurate seating.

The record is then placed between the maxillary and 

mandibular casts,

which are then joined together to ensure stability.

While the articulator is being set.

The articulator will be set using the techniques 

described by Napkins Ebert,

in the April 1969 issue of the Journal of 

Prosthetic Dentistry 

in preparation for setting to the left lateral record,

the left centric lock is tightened and the left 

Bennett guide is rotated out of possible contact 

on the right side.

The centric lock,

the Kandahar guide and the horizontal and vertical 

axis supports are all loosened 

as the split cast is lowered into position,

adjust the horizontal condolence inclination 

and the vertical and horizontal axis supports 

until the split seats accurately.

When the cast seats properly rotate the 

left.

Bennett guide into light Contact 

record the horizontal Kanzler inclination and 

the vertical and horizontal axis support readings 

and tighten these adjustments.

The same procedure is used to set the articulator 

for the right lateral,

record 

separate truces adjustments must be made and 

recorded on the back of the data card.

Once the articulator has been set in all three 

positions,

record the settings and placed them in the patient's 

chart 

to demonstrate the patient's seclusion in the right lateral 

exclusive movement.

We will loosen the left centric lock 

and with the thumb on the right Bennett guide 

plate,

move the upper member of the articulator to the 

right.

This procedure is reversed for the left lateral 

movement 

for petru sieve loosen both centric 

locks and perform the desired movement 

By analyzing the patient's seclusion throughout the full 

range of movement,

it is possible to plan a treatment for the patient 

that will be completely functional in all positions.