In many dental treatments, taking impressions is an important part of the process. It ensures that the tests performed on the patient are correct. In addition to providing more confidence, it provides excellent results. When choosing the materials for the impression, we must take into account:
- Toxicity of Components
- Handling, Consistency and Texture
- Water mixing ratio
- Resistance, elasticity, and dimensional stability
- Compatibility with modeling material and moulds
- Accuracy and time
- Susceptibility to disinfection and shelf-life
- Odour and taste
Due to their uses and characteristics, alginates and silicones are two of the most commonly used materials. We will discuss them in today's article.
Uses and benefits of alginates in dentistry
Alginates for impressions are elastic materials obtained from soluble salts of alginic acid from marine algae.
When should it be used?
Alginate is a material used in dentistry to make impressions of adjacent teeth and soft tissues. Dental impressions are made mainly in the prosthetic and surgery branches. In addition, an alginate is used to make primary impressions so that later partial, total or removable prostheses can be made. Finally, it is also used in the design of orthodontic models for the study and assembly of articulators.
What are the advantages of using alginate?
- Easy to handle
- Good shelf life
- Good hydrophilic properties
What are the disadvantages of using alginate?
- Dimensional instability
- Elastic recovery
- Poor precision of details
- Every impression must be washed
The main brands and products sold at Dentaltix:
In Dentaltix you can find a wide variety of brands, quantities and colors:
- The best value according to our customers: Orthoprint Extra Quick from Zhermack
- The most economical for the dentist: Alginato Cromatic from Vannini
- Cost-benefit suggestion: Algiline Universal from Medicaline
Uses and benefits of silicone in dentistry:
Silicone is an elastic material, which allows for shaping with relative ease and is easy to remove it after solidification in the oral cavity. This simplifies the procedure, since it does not permanently deform the mold.
Silicone has various classifications and knowing them is important for the choice of products. Depending on the preparation speed, silicone is divided into: standard or fast. Additionally, according to their consistency, you can find light silicone( also known as light body), normal, and heavy or putty.
In addition to these classifications, the two main existing types differ from each other due to the chemical reactions they cause, causing great differences in the way of working. These are condensation and addition silicone.
When should they be used?
Silicone, being a more elastic material, allows for more uses for dentists than alginate. With regard to impressions, for example, silicone is used in cases of root canals, soft structures and bone tissues, in addition to implants and functional impressions of full dentures.
Other uses for silicones include: reproductions of fractured teeth, through impression taking procedures, it also serves as a recording material for occlusal relationships due to its precision and dimensional stability.
Finally, it plays an important role in the total impressions of jaws, with or without teeth, or partial impressions for some parts of the arches in preparations for inscriptions, crowns and bridges.
Addition Silicone: when to use it, pros and cons?
The main indications for use are for unitary, quadrant and total molds, as well as partial and total removable dentures. Also used for permanent bridges, crowns, inlays, onlays and overlays..
Addition silicone, despite its high cost, has many benefits:
- Excellent dimensional stability
- It is the material with the best available accuracy
- High resistance to deformation
- Pleasant smell and taste
- Available for use in automatic devices
- Permanent deformation of less than 0.2% during extraction of the oral cavity.
- Guaranteed shape for 7 days.
- Easy disinfection in aqueous solutions of 2% glutaraldehyde or 0.5% sodium hypochlorite between 30 minutes and 1 hour..
- Average life of 3 years
It's main disadvantages are:
- Higher costs
- Sensitive to contaminants
- Release of hydrogen during polymerization, so emptying cannot be immediate
- Does not allow the use of latex gloves during handling
- Greater difficulty in removing from the mold
One of our partner brands made, together with our team, a blog post and a video talking all about addition silicones. See the Medicaline material by clicking here
Dentaltix offers a wide range of addition silicone, catalysts and complete kits. Among the brands offered are: 3M, Zhermack, Vannini., Kulzer. Due to our diversity of brands, we have a range of products with different characteristics available. Here are some suggestions:
- Best-selling at Dentaltix: Elite HD + Putty Soft Fast by Zhermack
- One of the most valued by our customers: ELITE HD + Light Body Fast by Zhermack
- The cheapest: Prestige a plus light by Vannini
- Cost-effective: Flexitime Correct Flow from Kulzer
Condensation Silicone: What are their uses, advantages and disadvantages?
Condensation silicone has a different level of density and preparation than addition silicone, so the technique should be used in two steps. There is silicone designed for the impression taking for dentures due to their high density after polymerization.
The main indications of use are for unitary, quadrant, total molds, as well as partial and removable prostheses, they are also used for crowns, inlays, onlays and overlays.
The main advantages are:
- More accurate than polysulphidess
- Odorless and tasteless
- Excellent deformation repair
- Resistant to tearing
- Adjustable working time and polymerization
- Relatively inexpensive
- Clean work
- Handling with or without gloves
- Poor dimensional stability
- Wait time of 15 minutes to remove the model from the mold
- Has hydrophobic properties
- Short expiration time
- Requires manual spatula
At Dentaltix you will find a great variety of condensation silicone in different formats and quantities:
- Best seller at Dentaltix: Virtual Putty Silicone from Ivoclar Vivadent
- Our customers strongly recommend: Zhermack Zetalabor Condensation Silicone
- The most cost-effective: Protesil Light Base from Vannini
We invite you to take a look at the experts in the manufacture of condensation and addition silicones Kettenbach, who have more than 65 years of experience in this and other areas.
As you can see, there are several product options when taking impressions. However, for a successful procedure, the dentist must make good choices at all stages of the procedure.
If you want to take the besrt impressions in your practice, visit our article on How to choose the most suitable tray.