Materials and techniques for taking dental impressions
The dental sector professionals have access to a variety of impression materials and can choose which product is best for their particular treatment. The latest dental impression materials are more accurate and provide less discomfort to patients due to technological advances in dentistry. Impression materials are one of the most significant recent developments in dentistry. We will discuss the features and recommend techniques.
Alginates for dental impressions
For many common procedures, impressions made of alginate are essential. These materials require cooperation between the laboratory and the dental practice. These materials can be mixed easily and are well tolerated. They are used in taking preliminary and primary impressions as well as the production of study models.
It is essential to follow specific procedures in order to ensure that these compounds are used correctly. These are our helpful hints to help you take a good impression of your teeth and get high-performance results.
It is important to remember that water and powder should be properly dosed. The material’s properties are determined by the water-to-powder mix. This also influences the manufacturer’s specifications such as times and compound stability. If the dentist prefers to mix by hand, he should first measure the powder and then add the water. To ensure that the powder is evenly distributed, it should be shaken before use. Many dentists prefer to use an automatic mixer over manual mixing. This new advancement in dental technology reduces bubbles and reduces microscopic defects in the impressions and stone models.
After the mixture has been prepared, dentists can choose from a variety of tray options to best suit their clinical case or personal preferences. A perforated tray and an adhesive compatible to the chemical and physical properties are two common ways to increase retention of the impression tray and alginate.
Alginate impressions can also be preserved if a stone model is not available immediately. Do not leave impressions in disinfectant solution for too long as this can cause damage to alginate materials. Hydrocolloids, which are hydrophilic in nature, expand when immersed into disinfectant or water.
Condensation and addition silicones
Silicones are one of the most accurate and reliable modern impression materials. Zhermack’s Hydrorise System range of addition silicones are highly accurate and reliable, while Zhermack’s Zetaplus System range of condensation silicones guarantees excellent final hardness and a reduced risk for tearing when removed from the mouth.
Do not mix up measuring spoons when adding silicones. Do not mix the base spoon with the catalyst, or vice versa. The final compound can not cure properly if there is contamination between the two components. When working with silicones, it is important to avoid wearing latex gloves. Latex is a blocker of polymerization and interferes with the platinum catalyst. Instead, you should wear vinyl gloves or nitrile.
Condensation silicones also require a dosing phase. The wrong amount of catalyst can have a negative impact on the material’s chemical and physical properties and result in poor performance. For example, using more catalyst than what is specified in the instructions can reduce the dimensional stability and decrease the time it takes to work in the mouth. Condensation types, unlike addition silicones can be used with vinyl and nitrile gloves. This does not affect their properties.
Use the same material for both the impression tray preparation and the preparation. The surfaces might not stick well if you use a mixture of a silicone impression tray and a silicone preparation.