There is a great deal of variety when it comes to dental impression equipment, and at Dentaltix, we want you to learn as much as possible about the products that you will find while using our online store.
Dental impressions are extremly useful tools available in clinics for working on accurate oral replicas. It is a comparative dental reproduction, which allows us to work on an exact mould of the patient's oral cavity. Impression trays (filled with alginate or silicone) are used to take the dental impressions. To begin with, a negative imprint must be taken from the mouth to be examined. Then, to obtain the positive reproduction, we must proceed to emptying the print.
In this article, you will find a list of products that simply cannot be missing from your clinic when working on dental impressions.
What do you need to take a dental impression?
Below we present to you the necessary products for taking dental impressions, all of which can be found at Dentaltix.
- Mixing cup: This cup is suitable for mixing both alginate and plaster. They are flexible and available in two sizes: small and large.
- Alginate spatula: At Dentaltix we offer you the nylon spatulas from Medicaline, specially designed for mixing alginate when taking dental impressions. These spatulas have an ergonomic handle for the greatest comfort in use.
- Alginate: The material used is usually alginate or silicone. However, the use of alginate is more common today for two main reasons: the cost of silicone is usually higher and not very convenient to scan soft tissues such as gum as it is a harder paste, and therefore requires more pressing. Alginate undergoes a chemical reaction by freezing, from a sol phase to a gel phase; more technically called an irreversible hydrocolloid. For this, we offer you the Cavex CA37 Alginate with high precision, good working time and precise reproduction.
- Impression trays: These can be made out of plastic, metal, or disposable materials. For this, we recommend the DuraLock Plus plastic impression tray from Ortho Technologys, numbered for different mouth sizes and color-coded accordingly.
How to take a dental impression?
At Dentaltix we advise you on how to effectuate a dental impression correctly in order to offer the best service to your patients.
- The appropriate measures must be taken to make a correct base mix. For the upper arcade, 2 alginate measuring spoons and 2 water spoons are recommended. For the lower arch, the recommended amounts are: 1.5 alginate and 1.5 water.
- First, add the alginate to the cup and then add the water. The mixture should then be stirred, crushing the dough against the cup's interior walls so that no lumps or air bubbles remain.
- The impression tray must be selected according to the patient's size (the impression tray must be 1 cm longer than the last molar and all other teeth must be completely covered). The alginate and water mixture obtained is then poured into the impression tray.
- The mixture must then set, therefore the temperature of the water must be taken into account (with cold water it takes longer for the mixture to set). Today, many alginates change color when they set, which is known as chronic alginates and makes them much easier to handle.
- The tray is placed in the patient's mouth, seated in a comfortable position for taking the impression, while trying to avoid blood reflux and possible choking. It must then be gently massaged to try and achieve the most accurate replication of the oral cavity. It is recommended to first take the impression of the lower arch and then the upper arch.
- Once the alginate has set, the trays must be carefully removed and ensured that they are completely dry. It is better not to rush, as if it is still in a liquid state the remains might be spilled. The impression must then be disinfected and the casting process carried out (it is also recommended to apply a pressure reducer to avoid the appearance of possible pores in the alginate).
What do you need to cast a dental impression?
Here are some of the products needed for dental impression casting which you will find at Dentaltix.
- Plaster cup: Suitable and flexible for mixing. Available in small and large sizes. Flexible and suitable for both alginate and plaster.
- Gypsum Vibrator: Vibrators are an essential tool when mixing for dental impressions and to avoid the possible appearance of air bubbles. We recommend you the Technoflux Large Rectangular Gypsum Vibrator, a newly designed machine with an adjustable and unlimited vibration amplitude. This removes bubbles in the mould leaving it homogeneous.
- Gypsum wide-bladed spatula: The gypsum or dental plaster spatula should have a wider blade in order to facilitate the movement when mixing. At Dentaltix, we have the plaster spatula with wooden handle from Bader; which is particularly aesthetic and comfortable to use.
- Plaster: Mixing it with water produces hydration and the progressive loss of solubility, thus producing an exothermic reaction. There is a huge variety of plasters, but at Dentaltix we recommend you the Kerr Snow White Plaster, a particularly fast setting plaster. It is available in light tones for easy reading and is both pleasing to the eye and reliable, making it a great choice for your dental practice.
How to cast a dental impression?
- First, add the water, then add the plaster in powder form until a creamy consistency is achieved. If the exact proportions are not used, a brittle break may occur despite having a similar appearance to the correct mixture.
- The print must be cleaned with running water and dried with compressed air.
- The plaster is added to the impression on the vibrator, always avoiding the appearance of pores. Once you have filled out the shape, it is advisable to fill it out a little more so that you can remove it properly.
- Once the plaster has dried, we get the alginates model, which must be placed in a damp in order to complete the casting.
As we mentioned, dental impressions are very useful in dentistry, but they must be effectuated properly if we want to to avoid possible failures in the future works to be done. On our website, you will be able to find all the products needed in order to facilitate the process of dental impressions making. Have a look here!