Effect of Sprue Design in Nickel-Chromium Cast Crown Margin
Pesqui. bras. odontopediatria clín. integr
; 21: e0110, 2021. tab, graf
Article
em En
| LILACS, BBO
| ID: biblio-1155014
Biblioteca responsável:
BR1264.1
ABSTRACT
ABSTRACT Objective:
To determine the effect of sprue design on the marginal accuracy of the casting. Material andMethods:
It was an experimental in-vitro study. There are forty-four crowns of single sprue group with a forty-four double sprue group that was compared in 6 different locations of the margin. The sections were inspected under a microscope at 50X magnification and took a micrograph. The radius from an actual casting edge to a possibly excellent margin was then documented as marginal discrepancy (d), in µm. The marginal discrepancy was documented for each of the six sections per casting. Thus 264 sections were measured for each group. Data were analysed using (ANOVA) for analysis of variance. For bivariate analyses, Chi-square and Student t test were used. The significance level was set at < 0.05.Results:
The marginal discrepancy was greater in the single sprue group of cast crown (43.1 ± 4.74 µm) and in double sprue group of cast crown was less (25.7 ± 4.25 µm). This difference is statistically significant (p<0.05). The correlation between single sprue group of casting with a double sprue group of casting by student's t-test where determination height was 95%.Conclusion:
Double sprue design produces a higher accurate margin than single sprue design in the nickel-chromium alloy cast crown.Palavras-chave
Texto completo:
1
Base de dados:
BBO
/
LILACS
Assunto principal:
Ligas de Cromo
/
Coroas
/
Ligas Dentárias
/
Revestimento para Fundição Odontológica
/
Materiais Dentários
Idioma:
En
Revista:
Pesqui. bras. odontopediatria clín. integr
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Bangladesh
/
Arábia Saudita