Avaliação da alteração dimensional de moldes de hidrocolóide irreversível submetidos à tècnica de reembasamento.
O objetivo deste trabalho foi avaliar as alterações dimensionais de moldes de alginato quando se emprega a técnica de reemba-
samento. A partir de um modelo padrão em aço inoxidável, contendo duas marcações, foram realizadas moldagens com Alginato
Ezact Kromm (Vigodent) e os modelos de gesso foram confeccionados com o gesso tipo IV Durone (Dentsply). As moldagens
foram divididas em 2 grupos: Grupo I – 10 moldagens com alginato sem reembasamento e; Grupo II – 10 moldagens com o algi-
nato utilizando o reembasamento. Os modelos de gesso foram confeccionados com espatulação a vácuo e levados ao Microscópio
Comparador Mitutoyo para obtenção das medidas que foram comparadas com o modelo padrão de aço inoxidável. Os dados foram
submetidos a análise estatística através do teste “t” de Student e obtivemos os seguintes resultados: houve alteração dimensional
estatisticamente significante no Grupo II (p<0,05) em comparação com o Grupo I e o modelo padrão. Concluiu-se que não é
recomendado a realização da técnica de reembasamento em moldagem com Alginato, devido a alteração dimensional observada.
palavras chave: Moldagem
AbsTRACT
The aim of this study was to evaluate the dimensional changes in alginate molds when employing the technique of relining. From
a standard stainless steel, with two appointments were made with alginate impressions Ezact Kromm (Vigodent) and plaster casts
were made of gypsum type IV Durone (Dentsplay). The casts were divided into two groups: Group I – 10 impressions without
relining and Group II – 10 inpressions with alginate using the relining. The plaster casts were made with vacuum mixing and
taken to the Comparator Mitutoyo Microscope to obtain measures that were compared with the standard model of stainless steel.
The data were statistically analyzed by t test of Student and obtained the following results: there was a statistically significant
dimensional changes in Group II (p <0.05) compared with Group I and the standard model. It was concluded that it is not recom-
mended to perform the technique of relining impression with alginate in, because the dimensional changes observed.
Key words: Dental Impressions Materials
The aim of this study was to evaluate the dimensional changes in alginate molds when employing the technique of relining. From
a standard stainless steel, with two appointments were made with alginate impressions Ezact Kromm (Vigodent) and plaster casts
were made of gypsum type IV Durone (Dentsplay). The casts were divided into two groups: Group I – 10 impressions without
relining and Group II – 10 inpressions with alginate using the relining. The plaster casts were made with vacuum mixing and
taken to the Comparator Mitutoyo Microscope to obtain measures that were compared with the standard model of stainless steel.
The data were statistically analyzed by t test of Student and obtained the following results: there was a statistically significant
dimensional changes in Group II (p <0.05) compared with Group I and the standard model. It was concluded that it is not recom-
mended to perform the technique of relining impression with alginate in, because the dimensional changes observed.
Key words: Dental Impressions Materials