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For the mandibular impression, the operator is usually standing in front of the patient to one side at approximately the 7'o'clock position while the right side of the tray is used to retract the left corner of the mouth, and a finger or mouth mirror retracts the right corner. For the maxillary impression, the operator is usually standing just behind the patient at the 11'o'clock position and retracts the right corner of the mouth with the mirror or index finger of the other hand.

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To take an alginate impression you will need:
Two mixing bowls
spatula
maxillary and mandibular trays
alginate powder
water
(amount of powder and water may very depending on the type of alginate being used.)
wax compound sticks
damp paper towel
disinfectant spray
While mixing and taking an impression the DA must be wearing full PPE (gloves, protective eye wear, mask, and lab coat)

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Materials needed to take an alginate impression are: 2 mixing bowls, spatchula (one that fits the bowl better makes for easier mixing), Alginate, Alginate scoop, alginate water measuring tool, water, impression trays, disinfecting spray, and damp paper towel to prevent shrinkage , and full PPE

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Positioning of Mandibular impressions: take impression in front of the patient, should be the same height as the patient shoulders. Seat it in even motion pulling lips out around the tray. Ask patient to lift their tongue and hold tray until material is set. Positioning of Maxillary impressions: seat posterior first then move forward with anterior. Hold tray until material is set. Once set retract cheeks to loosen and take out tray. The patient should be seated upright to minimize the collection of saliva and alginate at the back of the throat. To prevent gagging use fast set alginate, warm water and do not overfill the tray.

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1.Remain positive and in control of the situation.
2.Make sure the impression tray is the smallest you can use without compromising the areas you need on the impression.
3.Seat patient upright.
4.Remind patient to breathe through their nose.
5.Apply topical numbing spray to soft palate.
6.Always take mandibular impression first.
7.Give directions to distract patient. For example: "Lift your right leg, "Lift your left arm."
8.Use slightly warmer water for a quicker set time.

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For mandibular impression the tray is rotated into the mouth in the midline, seated in the posterior first, then move into anterior as it's being seated over the incisors. The lower lip is pulled out of the way to allow alginate to flow. For mandibular impression the tray is seat on posterior first and gently seated toward anterior to allow alginate to flow forward and not back into the palate.

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In addition to the supplies listed above, it is also important to spray the tray with an adhesive on the inside of the mold to help hold the alginate in the mold. Be sure to fluff the alginate before scooping the correct number of scoops for the impression. Load the mandibular mold with alginate from the lingual side of the mold. Load the maxillary mold from the back and swipe forward. Place water on top of the mandibular and maxillary molds before placing in the mouth.

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The operator would face the patient during a mandibular impression and standing straight to place the impression into place. During the maxillary impression you would be behind the patient, one hand around one side of the patient and the other around the other side to place the impression. Then once it in placed and the operator is still holding the impression the operator must come around the patient to the front of them to release it.

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You need, 2 mixing bowls, a spatchula, alginate powder, a mandibular and maxillary trays that fit just right, water added with along the measuring tray, and making sure of wearing all PPE.

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2 spatulas
2 bowls
alginate  powder
mandibular mouth tray -2 lines of water, 2 scoops of alginate
maxillary mouth tray-3 lines of water and 3 scoops alginate.
all PPE-mask, gloves, safety glasses, lab coat.

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when you take a maxillary one you should be behind the patient and making sure the alginate is not dripping in the back of the throat. and with the mandibular you would be facing the patient and pressing down gently so it doesn't get everywhere.

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the difference in positioning is that they are different ways, so that you are able to see better and be able to determine how the impression will turn out. We can lessen the gag reflex by using fast setting alginate so its in their mouth as quick as possible. You can also tell them to wiggle their toes so that they focus on that instead of whats in their mouth.

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You will need:
2 bowls
Spatula
Tray or trays for the arch or arches
Water according to the manufacture
Alginate powder
Wet paper towel
Full PPE (mask, gloves, eyewear, lab coat)

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For maxillary impressions the operator should be standing straight taking it on the patients side and using two hands.
For mandibular it should be standing straight to taking impressions without bending or looking into the patients mouth.

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Alginate impression materials:

·         PPE (protective clothing, mask, eye wear, and gloves)

·         Two mixing bowls

·         Two spatulas for mixing

·         Alginate mixing powder

·         Alginate scoop

·         Measuring vail for H20

·         Wax stick if needed

·         Maxillary tray

·         Mandibular tray

·         Damp paper towel

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Maxillary positioning – Place the tray over the back molars first and seat the posterior teeth. Tilt your hand upward to seat the remaining anterior teeth in the tray and make sure to expel any extra alginate forward (out of the mouth) to prevent gagging. Make sure to move the lips out so that the alginate flows over the sulcus. Keep in mind to maintain slight pressure towards the back of the tray to keep the alginate from spilling out the back.

Mandibular Positioning – Ask the patient to lift their tongue until the tray is seated. Make sure to move the lips/cheeks up and around the tray if needed. Place the tray over the back molars first and seat the posterior teeth. Tilt the tray downward to seat the remaining anterior teeth in the tray.

To help prevent gagging, mix a faster setting alginate and use water that is not to cold. Advising the patient to tilt their head slightly forward and remind them to breathe through their nose. While taking the impression, remind the patient how much longer till it sets and giving positive encouragement throughout.

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The materials you need are first always the safety protective wear, such as, Lab coat, safety glasses, a mask, and protective gloves.
All the materials should be out and ready for use. Needed supplies are 2 mixing bowls and two spatulas, one each are used for filling a maxillary tray, and a mandibular tray. The both arch trays are needed to keep the material in place. Sometimes dental wax is needed to form the end of the trays to make a longer, better impression. The material used is Alginate mixing powder, its measured by an alginate scooper that comes pre measured with the powder. To form the impression material together mixing a manufacturing amount of H20 to the material is needed. The use of all the materials should have been used by now. The only thing is when its all set up already it can be disinfected and wrapped in a damp paper towel to keep moist.

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With Mandibular you want to stand in front of the patient. You always start from the back molars and roll the tray forward so that the material doesn't go in the back of the patients throat. That will help with gagging.
With maxillary you stand behind the patient and work around their head. Again you start from the molars and roll the tray forward.
Another way to prevent from gagging it to have the patient sit upright with their head down so that the material doesn't roll back into their throat.

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What would happen if the material went down the patient's throat and how would you prevent his from happening