![]() Clinical use: secondary impressions for complete dentures. ![]() ![]() Disadvantages: mucocompressive (avoid use on flabby ridges), very rigid (avoid deep undercuts), poor dimensional stability, poor reproduction of surface detail.Ĭonsists of a base paste (zinc oxide, inert oils, resins) and a catalyst paste (eugenol, accelerator, filler).Mucocompressive, good for full impressions with no flabby ridge Advantages: can reheat and impression retaken/modified.Setting time: altered with temperature of water, use cooler water for a shorter working time.Clinical use: primary impressions for complete dentures, border moulding/extension of trays.Either green used as greenstick for border moulding and tray extension or red used for complete dentures.Ĭompound for complete denture impressions requires heating to soften the compound before use. There are two main types of impression compound used in dentistry. Disadvantages: brittle, no recovery from deformation, excess saliva negatively effects detail replication.Advantages: hydrophilic, good reproduction of details, good dimensional stability.Clinical use: occasionally for mucostatic impressions for flabby ridge.Plaster is an ideal mucostatic impression material however, its use has now been superseded by light bodied silicones and low viscosity alginate. ![]() These materials are rigid when set and therefore exhibit very little elasticity.ĭue to the rigidity of the materials any significant deformation to the impressions results in permanent deformation. Table 1: Based on the classification of impression material by Wassell, Barker and Walls (2002) Non-elastic materials The ones in italics we will cover later in this article. Table 1 shows the various types of impression materials available and their classification. Of that, we can divide the elastic materials further into synthetic elastomers and hydrocolloids. We can categorise impression materials as non-elastic or elastic. Here we will look at the various types of impression materials encountered in general practice along with their uses, advantages and disadvantages. Impressions allow a straightforward method of obtaining an accurate replica of a patient’s teeth. From restorative to orthodontics and much more. From study models for diagnosis and treatment planning to prosthodontics. Impression materials are encountered throughout various aspects of dentistry. In this month’s dental student’s guide, Hannah Hook explores the different types of impression materials and the pros and cons to each. I would like a call back from you Dr Flanagan so we can resolve this because your office manager lacks professionalism and honestly lack of empathy.A dental student’s guide to…impression materials She also implied she called the office who did work on me last week and that they told her you didn’t do any damage but after that I called the same office to clarify & they denied that question & said she only asked if they had seen me. Sherrie tells me she’s agitated with me because I have not paid and I put her name on the line because according to her she did me a favor for working out a payment plan and then threatens to place my account in collections by tomorrow and I told her I can’t agree to $794.56, for the next 3 months, my husband is out of work due to covid 19, and she dismisses by saying “ I’m only working 1 day a week” and then says I have until next Monday to let her know, when I asked for you Dr Flanagan to call me directly she had the audacity to hang up on me. I was not being rude to her while expressing my feelings, I did use some language I that I shouldn’t have used, but it wasn’t directed to her with mal intent, everyone has those moments and for that I do apologize. I was expressing to her my frustration for non payment. unpleasant experience I had with your work. Flanagan, I am leaving a complaint due to the unprofessionalism of your finance manager Sherrie.
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