Narodna in univerzitetna knjižnica, Ljubljana (NUK)
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Razsežnostne spremembe mavčnih modelov, ulitih v različnih presledkih iz enega silikonskega odtisa = Dimensional changes of plaster models produced from one silicone impression following multiple pour at different time intervalsJamšek, Jure ; Kopač, IgorBackground: Production of three plaster models from one elastomeric impressionis a laboratory procedure used with the purpose of producing more accurate restorations. The aim of our study was to ... establish whether dimensional stability of modern silicone impression materials allows a repeat pour of three plaster models that are comparable to one another in terms of accuracy. Materials and methods: A stainless steel model was fabricated in theshape of a plate with three different cylinders fixed perpendicularly to itat the angle points of an imaginary equilateral triangle. Impressions of thesteel model were taken using four addition silicones and one condensation silicone. Each impression was used for the production of three plaster models:the first one was poured four hours after impression taking, the secondone a day after, and the third one a week after. The diameters and heights of the cylinders as well as the distances between them were measured with a digital beak-shaped gauge. Results: The greatest shrinkage of cylinder diameters (0.31-0.52%) was measured on models that were poured a week after impression taking with addition silicones. When the condensation silicone was used, cylinder diameters expanded. Cylinder heights also showed the greatest increase in the models poured a week after impression taking (0.38-1.11%). Thechanges in distances between the cylinders ranged from -0.15% to +0.16%. Conclusions: One elastomeric impression allows the production of three plastermodels that fulfil clinical and laboratory requirements. The accuracy of models from the first two pours is comparable; the third model poured a week after impression taking shows slightly bigger dimensional changes.Vir: Zobozdravstveni vestnik. - ISSN 0044-4928 (Letn. 61, št. 4/5, 2006, str. 141-148)Vrsta gradiva - članek, sestavni delLeto - 2006Jezik - slovenskiCOBISS.SI-ID - 22727129
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Jamšek, Jure | 35615 |
Kopač, Igor | 08224 |
Vir: Osebne bibliografije
in: SICRIS
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