selective pressure impression technique given by

#MCQ 19 - Selective Pressure Impression Technique is indicated in: A. It combines the principles of both pressure and minimal pressure technique. Indian J Dent Res 2007;18:124-7 : How to cite this URL: Singla S. Complete denture impression techniques: Evidence-based or philosophical. neutral zone impression technique. The border molding was done with low fusing Rheological properties of elastomeric impression materials for selective pressure impression technique. obtain as much surface area to support the denture as physiologically acceptable. Materials used for disinfection of impressions are summarized in Table 2. Half of the participants in each group were provided with dentures fabricated by selective pressure impression technique (subgroup SIT), and the other half were provided with dentures fabricated by mucostatic impression technique (subgroup MIT). Altered cast not needed in. Green Brothers were the first to introduce the principle of muco compression during impression technique. all cases. A good impression plays an important role in the successful treatment in cases of resorbed mandibular ridges where there is inadequate tissue to fulfil the requirement of retention, stability and support . An impression technique for nasal prostheses that places pressure in the superior regions of the nasolabial sulci is described. - Areas of the denture bearing tissue best able to tolerate load and provide support are impressed under increased pressure or functional load. Firm healthy Mucosal covering over the ridge B. Flabby ridges C. Knife edge with movable mucosa D. When sharp bony spicules are present in the ridge Ans: A. Proponents of selective pressure techniques have recommended certain areas of the residual alveolar ridge to be stressed and certain areas to be relieved. Based on thorough understanding of the anatomy & physiology of the basal seat & surrounding area. Selective pressures can take many forms, including environmental conditions, availability of food and energy sources, predators, diseases, and even direct human influence. impression of an edentulous maxillary arch using the selective pressure technique, optimal pressure can be obtained using a tray with escape holes of 1.0 mm or larger, or a 1.40-mm-thick wax base plate as a spacer. Selective-pressure impression technique for nasal prostheses Arie Shifman, D.M.D. Shifman A. It is made by placing an appropriate material in a stock or custom dental impression tray which is designed to roughly fit over the dental arches. for selective pressure impressions for total dentures’ treat-ment by patients who had different kind of localization and abnormalities of the thickness and mobility of the alveolar ridges’ mucosa. Relief is provided in nonstress bearing areas to maintain tissue health. The shortcomings of this principle gave rise to the mucostatic technique by Hary L. Page with high regard for tissue health. Theories of impression making have evolved trough trial of a variety of materials and techniques. All programs border molded the custom tray, and 95% recorded the borders in sections. References . 72.1% of the practitioners use physiological method (intra-oral technique) to record posterior palatal seal while 27.9 of them use arbitrary scraping method (extra-oral technique). The techniques used for making final impression The basic differences in techniques for final impressions can be resolved as those that record the soft tissues in a: Functional position (Closed mouth technique, Pressure technique) Rest position Nonpressure technique (Passive technique, Mucostatic technique). •Impression is made in wax , altered cast is made after sectioning. 1 was checked for adaptation and extension and modified whenever required. techniques can be broadly divided into pressure, non pressure and selective pressure techniques.3 Dynamic impression techniques were also proposed with the intent of maximizing support from underlying tissues.4 The changes in impression techniques can be attributed to evolution of newer impression materials and better understanding of underlying tissues. The techniques can be grouped into mucostatic, mucocompressive, selective pressure, functional, and neutral zone impression techniques. 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