Context: Ceramic veneers are shown as an excellent alternative to improve dental aesthetics with ideal optical and mechanical properties. The objective of this study, was to evaluate the influence of the cementing agent and artificial aging on the veneer´s color. Material and Methods: For this, 30 human premolars were carved to receive veneers made with 0.5mm thick porcelain of the same color. The tooth-veneer sets were randomly separated into three groups (n = 10). A first color measurement was performed on each tooth using the Vita Easyshade colorimeter. The cementing process was carried out according to the group, with RelyX ultimate cement, RelyX Veneer and Tetric-N-Flow fluid resin; performing the color measurement. After heat aging treatment, the sets were subjected to a new color evaluation. Results: The data obtained from the measurements, were analyzed by ANOVA with Games - How...

Objective: Compare the artificial teeth changes position in the maxillary total prosthesis at the time of pressing, by measuring at certain pre-determined reference points, under different types of pressure force of 800, 1 000 and 1 250 kg, using Type III gypsum (Whip Mix, USA®) and condensation silicone (Zhermack, Italy) as inclusion materials. Methods: 36 superior prostheses obtained from a plaster model of a single total edentulous patient were fabricated. The copies were randomly divided into 6 groups each with 6 repetitions, considering the involved variables, materials and evaluiated strength after press and process of being transformed in acrylic. The difference between the reference points was established by Autocad (21.2 version Autodesk, Spain). Results: significant difference was detected between silicone and gypsum at 1 000 force at 1% of significance level. Conclusions: Sta...

Objetivo: Comparar los cambios en la posición de los dientes artificiales en las prótesis totales maxilares al momento del prensado, mediante la medición en puntos de referencia pre determinados, bajo una fuerza de presión de 800, 1 000 y 1 250 kg, empleando yeso tipo III (Whip Mix, USA®) o silicona de condensación (Zhermack, Italia) como materiales de inclusión. Métodos: Fueron fabricadas 36 prótesis superiores obtenidas desde un modelo de yeso de un único paciente edéntulo total. Las réplicas fueron divididas de forma aleatoria en seis grupos, cada uno con seis repeticiones, considerando las variables involucradas, materiales y fuerza evaluada, tras el prensado y acrilizado. La diferencia entre los puntos referenciales fue establecida mediante Autocad (versión 21,2, Autodesk, España). Resultados: Se detectó una diferencia significativa entre la silicona y el yeso a 1 000...