Polyether impression material6/25/2023 Most dentists still mix the material by hand and therefore incorporate inaccuracies by virtue of poor mixing and improper powder/liquid ratios. Multiple pours are not reliable, and accuracy of soft tissue areas is not guaranteed due to the viscosity of the material. However, alginate does need to be poured immediately if accuracy is desired. All dentists are familiar with the material, and it is used most often due to its price point - it is “cheap.” The most common material used for this purpose is conventional irreversible hydrocolloid (alginate). Preliminary impressionsĪlmost all prosthodontic patients require preliminary impressions for diagnostic purposes. I have watched them evolve during my 25 years of experience with polyethers, and I can attest to their high–quality results. Not only are polyethers versatile, meaning they can capture an excellent impression in difficult situations, but more importantly, they provide consistent results. However, in many situations, there is still an advantage to using polyether impression materials, which have certain properties that often make them superior to their counterparts. Given the current advanced technology of impression materials, creating accurate impressions generally relies less on the material and more on the clinical procedure. Combining the proper impression material with an optimal technique is vital in achieving a well–fitting restoration requiring little or no adjustment. These deficiencies include voids, inadequate capture of margins (especially subgingival margins), poor extension, and other defects. ![]() A primary concern with impressioning is the fact that many impressions are often inadequate, and are sent to commercial laboratories with these deficiencies. As a result, carefully selecting and stocking an accurate and reliable impression material is an important task.Īlthough the accuracy of an impression does not completely rely on the material itself, selecting an appropriate material is an essential part of the process. This is especially true of larger practices with many dentists and support staff. ![]() In addition, from a business point of view, it is preferable to minimize the number of materials needed in the dental practice. However, with the wide array of impression materials available, it is often difficult to choose the proper product for each situation. Almost every patient who enters a prosthodontic practice needs an impression at some point. Izchak Barzilay.Ĭhoosing an appropriate impression material is a challenge for many dentists, yet an essential component to providing an excellent clinical outcome and improving productivity and profit. Prostho., MS, FRCD(C)įor more on this topic, go to and search using the following key words: choosing the right impression material, 3M ESPE, alginate, Dr.
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