![]() ![]() Their use is ideal in situations where it is difficult to maintain a dry environment and/or when tissue management is difficult. The water-loving elastomeric material provides superior wettability and adherence to preparations, resulting in good surface detail. Polyethers remain popular among a large number of clinicians mainly because of their inherent hydrophilic nature. ![]() While they have earned a reputation for being too rigid and bitter in taste, enhancements over time have made them more desirable. Polyethers Polyethers have been in the dental market for more than 40 years. Surfactants are added to PVS materials to make them more hydrophilic and result in better impressions. This can reduce accuracy in a moist or wet environment. Additional characteristics include long shelf-life, adequate working times, fast set times and dimensional stability.Īlthough polyvinyl siloxanes meet many of the criteria for an ideal impression material, they are inherently hydrophobic. They are available in a wide range of viscosities, colors, scents/tastes and can be used with all impression techniques. Polyvinyl siloxanes (PVS) Addition silicones, also known as polyvinyl siloxanes (PVS), are the most commonly used impression material in the United States. Here’s a more detailed look at the two types of materials: The polyether/polyvinyl hybrids were developed to combine the best features of both materials. In recent years, a new class of impression materials has emerged. The decision to use one over the other varies among clinicians and is based on personal preference. Polyvinyl siloxanes, on the other hand, are known for their excellent elasticity, high tear strength and stability. Polyethers are known for their hydrophilic properties and good flowability. The preferred elastomeric impression materials on the market are polyvinyl siloxanes (PVS) and polyethers (PE). Making the right impression material choice for you helps avoid making a bad impression on your patients. ![]() There are many impression materials available from many manufacturers to choose from. ![]()
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