Mac Gregor A. Roy, Fenn, Liddelow and Gimson's Clinical Dental Prosthetics. 3, Rahn AO, Heartwell CM. … Zarb GA, Bolender CL. 0000016574 00000 n Sanath Shetty, P Venkat Ratna Nag, Kamalakanth K Shenoy Keywords: Escape holes/ relief holes/ vent holes, relief areas, selective pressure impression, spacer design, stops, Bernard L. Impressions for complete dentures. All programs border molded the custom tray, and 95% recorded the borders in sections. 0000002537 00000 n 3. %PDF-1.3 %���� Rheological properties of elastomeric impression materials for selective pressure impression technique. The philosophy of selective pressure technique is that certain areas of the maxilla and the mandible, by anatomy, are better suited to withstand loads from the forces of mastication and at the same time there are certain areas, which cannot withstand such forces due to … An impression in complete dentures is the first step in the fabrication of the complete denture prosthesis. 0000637032 00000 n The selective impression technique is recommended for removable prosthodontics. Jacobson TE, Krol J. neutral zone impression technique. 0000637294 00000 n 2. #MCQ 19 - Selective Pressure Impression Technique is indicated in: A. Many phenotypic variations are neutral, which means that they don't give organisms a benefit or disadvantage when it comes to survival and reproduction. used if marked flabbiness exists ( advanced flabbiness) primary impression taken with alginate. 0000001788 00000 n Selective pressure impression (SPIT) technique is based on the premise that the stress bearing capability of the denture bearing area must be taken into account while recording the impression. For seating velocity of the impression tray, Hyde et al. Various theories have been proposed by different authors as to how to achieve an optimum impression in different ways. Anatomy and Physiology of the edentulous mouth. Halperin, Graser, Rogoff, Plekavich. J Prosthet Dent 1969;22:400-13. https://www.j-ips.org/text.asp?2007/7/1/8/32509, � The Journal of Indian Prosthodontic Society | Published by Wolters Kluwer -. ] noted that when making an 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. Rheological properties of elastomeric impression materials for selective pressure impression technique. trailer << /Size 82 /Info 17 0 R /Root 31 0 R /Prev 654083 /ID[<53709e0dbb379fcef7ef444aec533c5c><46d35e43e1d1bd6cec099803b497b30b>] >> startxref 0 %%EOF 31 0 obj << /Type /Catalog /Pages 19 0 R /Metadata 18 0 R /JT 29 0 R /PageLabels 16 0 R >> endobj 80 0 obj << /S 55 /L 199 /Filter /FlateDecode /Length 81 0 R >> stream H��W�r�H}�Wԣ� Y�Ҿ�6=���8==� �0����{��t��홍�h,(ee����W�ʀmJ��r�_]����Kye�����_���t�Ÿf?3�e����ٖ5��ވ[����L�G}�G��n-�+��k��v=���g��Q���i�6X��]y(w� ��V��ZW�E�!e���)׉뛶�(t�&��Scv�\=�>�d��u^6�ݼ�ʗ��yU�}C���JEn6�kt=3�ܽ�F� &����ͩ��%l_oD1qL 0000007409 00000 n In this study selective pressure impression technique and neutral zone have been compared. 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). Records selected tissues in a displaced (functional) position. The selective pressure technique makes it possible to confine the forces acting on the denture to the stress-bearing areas. The variety of impression materials and the range of working characteristics of these materials, make possible the development of impression procedures best suited for specific conditions. Among them the most accepted is selective pressure theory , which was advocated by Carl O Boucher. 12. 0000002466 00000 n Our method for making impressions should be based on the basic principles of maximum area coverage and intimate contact … All the oral functions involve the synergistic actions of lips, cheeks, tongue and floor of the mouth. Komiyama O, Saeki H, Kawara M, Kobayashi K, Otake S. Effects of relief space and escape holes on pressure characteristics of maxillary edentulous impressions. A selective-pressure impression technique for the edentulous maxilla. 0000001387 00000 n 0000002246 00000 n 0000638181 00000 n The selective pressure maxillary impression: A review of the techniques and presentation of an alternate custom tray design Part III: Support. 0000001767 00000 n 1 °. A contemporary review of the factors involved in complete dentures. Analysis of pressures produced during maxillary edentulous impression procedures. 4848 Selected pressure impression techniqueSelected pressure impression technique TheThe objectivesobjectives of the technique are:-of the technique are:- 1.1. the equalization of support between the abutment teeth and thethe equalization of support … The impression making in total denture treatment is of great importance, not only for denture retention and sta-bility but also for the mucosa status which should be kept and reflected without any distortions./ 4,5 / The aim of the authors is to present three methods for selective pressure … These results provide unique insight into the selective impression technique. However, the viscoelastic rheological properties of impression materials, particularly the time-dependent viscoelastic changes in impression material immediately after tray seating, are unknown. 1 was checked for adaptation and extension and modified whenever required. selective displacive technique: also known as selective pressure technique. 0000011937 00000 n @article{Kawara2015RheologicalPO, title={Rheological properties of elastomeric impression materials for selective pressure impression technique. 0000057173 00000 n }, author={M. Kawara and Masatoshi Iwasaki and Y. 0000016141 00000 n Various theories have been proposed by different authors as to how to achieve an optimum impression in different ways. J Prosthet Dent 1983;49:306-13. J Prosthet Dent 2004;91:570-6. Certain factors are better achieved by one technique and others by second method. 0000007971 00000 n 0000008765 00000 n In the last few decades many authors have interpreted Boucher's selective pressure in various ways making it more complicated and difficult to follow. 0000008164 00000 n PMID: 15343168 [Indexed for MEDLINE] MeSH terms impression compound mixed in lab and placed on tray and pressed on model with all excess removed after setting (compound replaces spacer) 0000464319 00000 n Various methods had been employed by the profession to overcome this problem. This article describes a selective-pressure impression technique for the edentulous maxilla that is intended to compensate for the polymerization shrinkage of heat-polymerized polymethyl methacrylate resin and provides improved palatal adaptation of the definitive denture base. PopUp = window.open( location,'RightsLink','location=no,toolbar=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width=650,height=550'); }, Source of Support: None, Conflict of Interest: None. By displacing the tissues of the palate and effectively creating a deeper vault on the definitive cast, the technique compensates for the shrinkage of the polymethylmethacrylate. However, when the mucosa is easily displaced, the open-mouth selective pressure technique is preferable. 0000015481 00000 n But all the authors proposed their concepts based on the available information of the underlying functional and histologic anatomy during their time.This article reviews the various ways of achieving selective pressure as seen by different authors and also includes a custom tray design to achieve selective pressure, which is based on the newer concepts of the stress bearing and relieving areas in the maxillary edentulous impression procedures. 0000012819 00000 n 0000001942 00000 n Among them the most accepted is selective pressure theory, which was advocated by Carl O Boucher. 0000012483 00000 n Technique:. impression technique, we have been provided with a set of philosophies - “no pressure, minimal pressure, definite pressure and selective pressure”. Boucher's prosthodontic treatment for edentulous patients. 0000015757 00000 n 0000016711 00000 n 0000015284 00000 n DOI: 10.1016/j.jpor.2015.07.002 Corpus ID: 206447824. 0000004423 00000 n - Areas of the denture bearing tissue best able to tolerate load and provide support are impressed under increased pressure or functional load. DCNA 1977;21:199-217. 0000465247 00000 n Another type of impression technique is selective pressure technique in which stress bearing areas are compressed and stress relief areas are relieved such that both the advantages of muco static and muco compressive techniques are achieved. 3, Neill DJ, Nairn RI. Functional position (Closed mouth technique, Pressure technique) Rest position Nonpressure technique (Passive technique, Mucostatic technique). Dental laboratory procedures, complete dentures, Volume one. 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. The G' values varied with each impression material, even immediately after mixing, and the accurate impression-taking time was determined from the results of tanδ. 0000003746 00000 n 0000007624 00000 n H�b```f``���$�D ��2pli`�-Y��Ȇ�P �P���� ���������k`-`:� v����`7S�ZC�_M�S�701�5�|`�g{���p��MѺ����a�) �f��-��F&�[�8?�` �e`0 hF' endstream endobj 81 0 obj 184 endobj 32 0 obj << /Type /Page /Parent 19 0 R /Resources 33 0 R /Contents 42 0 R /MediaBox [ 0 0 581 780 ] /CropBox [ 0 0 581 780 ] /Rotate 0 >> endobj 33 0 obj << /ProcSet [ /PDF /Text ] /Font << /F1 51 0 R /F2 47 0 R /TT1 39 0 R /TT3 37 0 R /TT4 41 0 R /TT6 44 0 R /TT7 58 0 R >> /XObject << /Fm2 79 0 R >> /ExtGState << /GS1 67 0 R /GS2 59 0 R >> /ColorSpace << /DefaultCMYK 36 0 R /Cs8 36 0 R /Cs9 35 0 R /Cs10 55 0 R /Cs11 46 0 R >> >> endobj 34 0 obj << /Type /FontDescriptor /Ascent 891 /CapHeight 0 /Descent -216 /Flags 34 /FontBBox [ -558 -307 2000 1026 ] /FontName /ODKPMB+TimesNewRoman,Bold /ItalicAngle 0 /StemV 133 /FontFile2 71 0 R >> endobj 35 0 obj [ /Separation /RTF#20r19#20g1#20b124 36 0 R 65 0 R ] endobj 36 0 obj [ /ICCBased 63 0 R ] endobj 37 0 obj << /Type /Font /Subtype /TrueType /FirstChar 49 /LastChar 53 /Widths [ 456 456 456 0 456 ] /Encoding /WinAnsiEncoding /BaseFont /ODKPKB+SP_Herald_Narrow,Bold /FontDescriptor 40 0 R >> endobj 38 0 obj << /Type /FontDescriptor /Ascent 891 /CapHeight 0 /Descent -216 /Flags 34 /FontBBox [ -568 -307 2000 1007 ] /FontName /ODKODI+TimesNewRoman /ItalicAngle 0 /StemV 0 /FontFile2 60 0 R >> endobj 39 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 232 /Widths [ 250 0 0 0 0 0 778 0 333 333 0 564 250 333 250 278 500 500 500 500 500 500 500 500 500 500 278 0 0 0 0 0 921 722 667 667 722 611 556 722 722 333 389 722 611 889 722 722 556 0 667 556 611 722 722 944 722 722 611 0 0 0 0 0 0 444 500 444 500 444 333 500 500 278 278 500 278 778 500 500 500 500 333 389 278 500 500 722 500 500 444 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 333 444 444 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 535 ] /Encoding /WinAnsiEncoding /BaseFont /ODKODI+TimesNewRoman /FontDescriptor 38 0 R >> endobj 40 0 obj << /Type /FontDescriptor /Ascent 910 /CapHeight 0 /Descent -312 /Flags 32 /FontBBox [ -139 -217 873 938 ] /FontName /ODKPKB+SP_Herald_Narrow,Bold /ItalicAngle 0 /StemV 133 /FontFile2 68 0 R >> endobj 41 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 121 /Widths [ 250 0 0 0 0 0 0 0 0 0 0 0 0 0 250 0 0 500 500 0 0 0 0 0 0 0 333 0 0 0 0 0 0 722 667 722 722 667 611 0 778 389 0 778 667 944 722 778 0 0 722 556 667 722 0 0 0 0 0 0 0 0 0 0 0 500 0 444 556 444 333 500 556 278 0 0 278 833 556 500 556 0 444 389 333 556 0 722 0 500 ] /Encoding /WinAnsiEncoding /BaseFont /ODKPMB+TimesNewRoman,Bold /FontDescriptor 34 0 R >> endobj 42 0 obj << /Length 2911 /Filter /FlateDecode >> stream 0000476153 00000 n 0000015535 00000 n stress-bearing areas. An impression in complete dentures is the first step in the fabrication of the complete denture prosthesis. It is defined as a custom made device prepared for a particular patient which is used to confine and control an impression material making an impression. Department of Prosthodontics including Crown and Bridge and Implantology, Yenepoya Dental College, Derlakatte, Mangalore, Karnataka, India, Correspondence Address:Sanath ShettyDepartment of Prosthodontics including Crown and Bridge and Implantology, Yenepoya Dental College, Derlakatte, Mangalore, Karnataka IndiaSource of Support: None, Conflict of Interest: NoneCheckDOI: 10.4103/0972-4052.32509 function RightsLinkPopUp () { var url = "https://s100.copyright.com/AppDispatchServlet"; var location = url + "?publisherName=" + encodeURI ('Medknow') + "&publication=" + encodeURI ('JIPS') + "&title=" + encodeURI ('The selective pressure maxillary impression: A review of the techniques and presentation of an alternate custom tray design') + "&publicationDate=" + encodeURI ('Jan 1 2007 12:00AM') + "&author=" + encodeURI ('Shetty S, Nag P V, Shenoy KK') + "&contentID=" + encodeURI ('JIndianProsthodontSoc_2007_7_1_8_32509') + "&orderBeanReset=true" 5, Zarb GA, Bolender CL, Carlsson GE. Mohl ND, Drinnan AJ. Text book of complete dentures. 0000057134 00000 n In the first stage, the practitioner makes a preliminary impression with a rigid or elastic material using the one-step technique.After the material sets, the impression is sent to the dental laboratory. Complete denture prosthodontics. This article describes a selective-pressure impression technique for the edentulous maxilla that is intended to compensate for the polymerization shrinkage of heat-polymerized polymethyl methacrylate resin and provides improved palatal adaptation of the definitive denture base. 0000637904 00000 n 11, Morrow RM, Rudd KD, Rhoads JE. This article describes a selective-pressure impression technique for the edentulous maxilla that is intended to compensate for the polymerization shrinkage of heat-polymerized polymethyl methacrylate resin and provides improved palatal adaptation of the definitive denture base. For seating velocity oftheimpressiontray,Hydeetal. According to Taylor and colleagues, selective-pressure impression technique described provides the clinician with a method for improving the palatal adaptation of maxillary complete dentures. Do you think any philosophy can satisfy any operator to work on these principles and achieve these objectives? JPD 2004; Volume 92, Issue 3, Pages 299-301 3. special tray is made with 2 mm spacing. Quintessence: Chicago; 1988. p. 43-51. Impression is basically an interaction between tissues and impression material. Mastering the art of complete dentures. According to Taylor and colleagues, selective-pressure impression technique described provides the clinician with a method for improving the palatal adaptation of maxillary complete dentures. 0000637803 00000 n The impression material of choice for the preliminary impression was irreversible hydrocolloid (88%). 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