Browsing by Author "Guerra Ruiz, Dayana Marcela"
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Item Comparación cronológica de la estabilidad dimensional de dos técnicas convencionales de impresión versus técnica modificada con polivinil siloxano(Universidad Santiago de Cali, 2019) Arias Morales, Paola Andrea; Guerra Ruiz, Dayana Marcela; Arana Gordillo, Luis Alfonso (Director)The purpose of this study was dimensional stability. To carry out the study a stainless steel model was confirmed, which simulated three pillars with their finishing lines, the three pillars are 10 mm in height and 10 mm in width, the flat occlusal surface, in square shape, with a 2 mm terminal line. For each moment of emptying (immediate, 8 and 24 hours) 12 impressions were made, 4 for each printing technique, a total of 36 impressions. Six measures (mesiodistal, lingual vestibule) were taken each of the pillars of the time model to see these impressions by means of a digital micrometer to be compared with the measures of the master model. A descriptive statistical analysis was made with student test, and an analysis of variance (ANOVA) for the comparison of the areas with two fixed factors, and the Tukey test. three techniques when the vacuum was performed at 8 hours with the step and a half technique (P = 0.001); Two steps (P = 0.002), no significant differences were found for the one-step technique; at 24 hours, significant differences were found in the step and medium technique (P = 0.007), two steps (P = 0.047), the one-step technique was not significantly related and finally no technique. He objective of this study is to determine the dimensional stability of conventional techniques and modified technique for silicone impressions over time.