Citas bibligráficas
Merma, S., (2017). Comparación in vitro de la estabilidad dimensional de dos siliconas de condensación con la técnica de doble impresión en relación al tiempo de vaciado de modelos de estudio-UAC Cusco-2017. [Tesis, Universidad Andina del Cusco]. https://hdl.handle.net/20.500.12557/1207
Merma, S., Comparación in vitro de la estabilidad dimensional de dos siliconas de condensación con la técnica de doble impresión en relación al tiempo de vaciado de modelos de estudio-UAC Cusco-2017. [Tesis]. : Universidad Andina del Cusco; 2017. https://hdl.handle.net/20.500.12557/1207
@misc{renati/1125561,
title = "Comparación in vitro de la estabilidad dimensional de dos siliconas de condensación con la técnica de doble impresión en relación al tiempo de vaciado de modelos de estudio-UAC Cusco-2017.",
author = "Merma Suarez, Sandra Geraldine",
publisher = "Universidad Andina del Cusco",
year = "2017"
}
The purpose of this study is the In Vitro comparison of the dimensional stability of two condensation silicones. Determined as mixed compounds because they have a base and a catalyst composed of: Synthetic Silicon - Oxygen Polymer, called: (Polydimethylsiloxanes), which in its chemical composition has: In the Base Paste: It is composed of Polydimethylsiloxane with filling composed of Silica and Calcium Carbonate. In the Accelerator (catalyst): It is composed of Tin Octoanate and Orthoethylsilicate as a chain crosslinker. These provide physical characteristics such as: dimensional stability, resistance to deformation, in working states, under condensation techniques. For our study we used the silicone: (Zhermack®Oranwash L, Zetaplus, whose base paste compounds are: as a filler Silica and Calcium Carbonate, and for the accelerator (catalyst) its composition is: Tin Octylate and Orthoethylsilicate, also was used Speedex Putty silicone Ligth Body whose compounds in the base paste are: as filler Silica and Calcium Carbonate for the accelerator (catalyst) its composition is: Tin Octoanate and Pre-condensed Orthoethylsilicate. In the development of this research was carried out the elaboration of a master model of metallic alloy of aluminum base which simulates a lower right hemiarcate with pieces 4.5, 4.6, 4.7, 4.8. Numbered according to the FDI. Whose piece (4.7) simulates a preparation of a straight shoulder prosthetic abutment. The pillar has accurate measurements on all sides, which served as a reference in the study models that were obtained for the present investigation, and in which the variability and the measures were quantified. In the procedure 10 prints were taken 5 with each mark of silicone, 5 with the brand of silicone Zhermack® Zetaplus, and 5 with the brand of silicone Speedex Putty. Working with standard parameters under the same conditions oftemperature, environment, time and manipulation of the technique for both printing materials. These impressions were emptied with extra hard plaster type IV, the chemical compound of which is calcium sulfate dihydrate CaSO4, with the same conditions as: temperature, environment, dosage and time, for both printing materials, this procedure was carried out in 5 time intervals duly controlled and timed by the investigator. In this way the study models were obtained at different times. The 10 diameters corresponding to the master model were evaluated for each study model, which were quantified numerically and were coded according to the silicone mark and according to the time in which they were emptied, which will be measured by a digital scale calibrator Precision Vernier with an accuracy of 0.05. For the measurement of the abutments, the following dimensions were determined: cervical occlusal, mesio-distal, vestibular-lingual, and shoulder development dimension, these dimensions were compared in different models, seeing in which there was variation. To obtain the results, a quantitative and qualitative analysis was used: In the qualitative analysis: we observed the variation of the structure in the study models. In the quantitative analysis: the results obtained were taken to a comparative statistical analysis in which we determined the variability of contraction according to the time in which the study models were emptied. In the quantitative analysis: the results obtained were taken to a comparative statistical analysis in which we determined the variability of contraction according to the time in which the study models were emptied. For this purpose this study aims to provide knowledge about which material develops the greatest contraction and in what time, in this way we can work with the correct printing material and in the appropriate time to avoid variations in dimensionality
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