good technique in taking Al Djinnit impressions is 

essential for accurate aesthetic impressions.

In many dental offices,

the hygienist is required to take impressions of all 

routine patients and of various recall 

patients from these impressions.

Stone models are made which aid the dentist and 

diagnosis and are used to demonstrate to the 

patient what dental work needs to be done.

These models may also be used to demonstrate home 

care instructions during individual patient 

education.

This videotape will demonstrate the procedure for 

taking Al Djinnit impressions.

This involves the measuring and mixing of the 

ingredients and the filling,

seating and removing of the tray from the oral cavity.

In addition,

evaluation criteria are presented to enable you 

to judge the quality of your own impressions.

After viewing this tape and suitable 

practice you should be able to 

one dispense and mix al Djinnit impression 

materials properly 

to accurately fill and seat the impression 

tray within the oral cavity.

three remove the impression tray correctly 

and for evaluate your impression,

utilizing the specified criteria of a good 

impression.

Dental impression materials can be classified as 

those that are rigid and those that are flexible 

at the time they are removed from the oral cavity.

Dental impression compounds impression 

plaster and zinc oxide and Eugene.

All are rigid impression materials.

They are brittle and hard when removed from the oral 

cavity.

Augur hydroxyl Lloyd,

Algernon,

hydroxyl Lloyd policy.

Sulfide rubber,

silicone,

rubber and poly ether rubber are flexible 

or elastic impression materials.

They have a rubbery,

flexible consistency when removed from the oral 

cavity.

Al Djinnit impression material is used to prepare 

study models of the entire dental arch.

It is also used for making primary impressions of 

evidential ist mouths and to prepare stone 

models of patients in the preparation of partial 

dentures or athletic mouth protectors.

Al jinn.

It is not recommended for making impressions of cavity 

preparations 

when selecting the impression tray.

Be sure to use only a perforated tray as it 

will better retain the set impression during removal.

Select the appropriate trade for the particular impression 

desired,

such as full or quadrant maxillary 

or mandibular arch.

Check the size of the tray.

It should be large enough to cover all the teeth and 

surrounding oral tissues.

You may extend or deepen the trade by adding either 

utility wax or compound to the posterior 

rim of the tray compound may be added to the 

political region of the trade.

To compensate for a high palate,

Al Djinnit impression material may also be added 

directly to the political region of the oral cavity.

Prior to seeding the trade.

To compensate for a high palate,

the tray should not be so large that it is difficult to 

insert into the oral cavity or extend 

too far from the al villa ridge 

trace.

Election depends greatly on the size of the opening to 

the oral cavity.

Begin the mixing process by measuring the water 

and the vial provided by the manufacturer 

note it has three lines indicating the quantity of 

water to be used.

The first line is for one scoop of powder,

the second for two scoops and the third 

for three scoops,

According to the manufacturer.

The ideal working temperature for the water is 

21°C or 

70°F. The water 

temperature is measured by placing a thermometer in the 

vial while running the tap water into the vial and 

adjusting it accordingly.

The setting time of algae in it is dependent on the temperature of the 

water.

If the water is too warm,

the material will set too rapidly.

If the water is too cold,

it will take longer for the material to set,

which is very uncomfortable for the patient.

The measured water is then poured into a rubber mixing 

bowl 

before measuring the powder,

fluff it by turning the can over in the back several 

times.

Overfill the plastic scoop without compacting the 

powder,

tap the handle lightly with a spatula to fill any large 

voids in the scoop,

scrape off the excess with the blade of the spatula.

One scoop of powder is used for each line on the 

water vial.

One scoop of powder is used for quadrant impression 

trays,

two scoops for a mandibular arch tray 

and three scoops for a maxillary full arch trey.

Never alter the water powder ratio 

begin mixing by adding the powder to the water,

stir to wet all of the powder,

then mixed by squeezing the spatula against the side of 

the bowl in a sweeping motion.

Makes for one minute until the consistency is smooth and 

creamy.

You will have approximately four minutes total working 

time from the moment you begin working to the final set of 

the Al Djinnit impression improper 

mixing results in grainy impressions with poor 

detail if mixed,

either too long or too short a period of time.

The chemical reaction will be affected and the material will lose 

strength,

filling the impression tray should be done Quickly,

carry the material on the end of the spatula,

scraping the spatula against the sides of the impression 

tray to remove it.

The material is usually added to the posterior portion of the 

tray and pushed toward the center.

This reduces overflow and minimizes gagging.

You may smooth the surface of the impression material by 

moistening your finger with water and rubbing it across its 

surface 

before you seek the tray.

The patient should be seated in an upright position with the 

mandibular and maxillary arch is in a horizontal 

orientation.

This helps prevent the algae in it from flowing in a posterior 

direction down the patient's throat.

The patient's teeth should also have been dried using 

air or cotton rolls.

Reading the impression area of saliva,

increases the accuracy of the impression.

Seek the posterior portion of the tray first 

and then the anterior portion.

Press evenly and use the cheeks and lips to mold 

the soft tissues.

Hold the trade gently but firmly in place until 

set setting is usually complete within 

two minutes it is indicated when the 

surface is no longer tacky 

removal of the tray from the mouth should be rapid.

Al Djinnit impression material will have less distortion,

less tearing of thin sections and greater strength when it 

is deformed.

Suddenly not slow.

First break the seal by moving the cheek or lips away from 

the tray with your fingers.

Then remove the tray with a single firm motion.

Hydroxyl Lloyd impression type materials in both 

the Auger and al-Jinn.

It forms should be poured within 12 minutes 

of their removal from the mouth.

Evaluate the quality of your impression by looking for the 

following criteria.

A smooth surface,

a rounded periphery 

centered in the tray,

the proper depth in the tray,

one quarter inch,

no debris from the mouth,

good detail including tooth anatomy,

ginger,

ville attachment,

muscle attachment,

and any abnormalities 

and normal landmarks,

including retro moller pads,

pistols.

Of the most posterior molars,

and all the sides of the teeth clearly visible.

Once you have obtained an impression which meets these 

criteria,

it is ready to be poured in stone