selective pressure impression technique given byThe impression technique plays the substantial role. Selective pressure impression technique.6-9 Massad’s impression technique.5,10-14 Functional impression technique.15-17 Selective Pressure Impression Technique The special tray fabricated on cast No. Christensen, in a less complicated technique, suggested to take the impression of the edentulous arch with an elastomeric material in a custom tray, then to cover this initial layer and the dentate areas with an elastomeric impression material of lighter-viscosity [6, 7]. obtain as much surface area to support the denture as physiologically acceptable. These techniques have been classified by different authors as functional, mucostatic, mucocompressive, selective pressure, minimal pressure etc. Numerous modifications in impression techniques have been suggested in literature for controlling the pressure on the residual alveolar ridge [1–7]. Based on thorough understanding of the anatomy & physiology of the basal seat & surrounding area. The selective pressure technique is based on the selective pressure theory, which was proposed by Carl O. Boucher. Please try again later. Theories of impression making have evolved trough trial of a variety of materials and techniques. Selective pressure single impression technique for removable partial denture Journal of prosthet dent 1998 ; 80; 2; 259 www.indiandentalacademy.comwww.indiandentalacademy.com 82. mandibular distal extensio RPDS. Spacer design along with the impression technique for edentulous patients remained a controversy or confusion for the dentist. 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. Materials used for disinfection of impressions are summarized in Table 2. Altered cast not needed in. Altered cast is **most commonly needed for. 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). McCracken proposed the altered cast technique with the selective tissue placement impression . neutral zone impression technique. PURPOSE The selective impression technique is recommended for removable prosthodontics. Introduction. Firm healthy mucosal covering over the ridge Mucostatic Impression Technique is indicated for options B,C and D. The selective pressure impression technique, as advocated by Boucher, 13 has been commonly used and records predefined stress-bearing areas under pressure and nonstress bearing areas under minimum pressure. 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. The objective of the research was to assess patient preference for a selective pressure impression technique for complete dentures by means of a Randomised Controlled Clinical Trial (RCT). However none of these techniques has been designated as the ‘time best’ for a particular patient though selective pressure technique has got much attention in the literature. • HENDERSON AND STEFFEL 1973 – Discussed Selective pressure technique in order to get functional form of the tissues. 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 . For seating velocity oftheimpressiontray,Hydeetal. - Areas of the denture bearing tissue best able to tolerate load and provide support are impressed under increased pressure or functional load. 45.6% used Selective pressure technique for making final impression, while 32.0% used Mucocompressive technique and 22.3% mucostatic technique. Green Brothers were the first to introduce the principle of muco compression during impression technique. Basal seat area can be divided on the basis of capacity to bear loads into; Read article at publisher's site (DOI): 10.1016/j.prosdent.2004.06.001. Even if selective pressure is the most accepted and followed impression philosophy; there are variations in designing of the custom tray for the same, as advocated by different academicians [3-14]. 8282 For more details please visit www.indiandentalacademy.com www.indiandentalacademy.comwww.indiandentalacademy.com Journal of prosthet dent 1970(24,1,41-46) 11. However, the viscoelastic rheological properties of impression materials, particularly the time-dependent viscoelastic changes in impression material immediately after tray seating, are unknown. • RAPUNO 1970- - Single tray dual impression technique • www.asiandentalacademy.org 16. Relief is provided in nonstress bearing areas to maintain tissue health. The border molding was done with low fusing Records selected tissues in a displaced (functional) position. Full text links . 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. A dental impression is a negative imprint of hard (teeth) and soft tissues in the mouth from which a positive reproduction (cast or model) can be formed. Embedded within the impression technique for disinfection of impressions are summarized in 2! 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