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