Cimentação de coroas com fosfato de zinco sobre munhões de liga de titânio, irradiados ou não por laser

• Autor(a) principal: Toledo, Fabiane Lopes
• Data de Publicação: 2010
• Outros Autores: Freitas, Marcia Furtado Antunes de, Oliveira, Rickson Mello e, Guastaldi, Antonio Carlos [UNESP], Freitas, Cesar Antunes de
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://revodonto.bvsalud.org/scielo.php?script=sci_abstract&pid=S1984-59602010000200009&lng=pt&nrm=iso&tlng=pt; http://hdl.handle.net/11449/123482
• topic: Implantes dentários; Cimentação; Resistência à tração; Dental implants; Cementation; Tensile strength

By means of tensile strength, NiCr total crowns were removed from machine-made conical abutments composed by an Ti-6Al-4V alloy. In a total of 20 abutments, 10 were used with it surface presenting high smoothness and 10 abutments had its surfaces modifi ed by laser both cemented with zinc phosphate. The mechanical test was performed at a MTS 810 universal machine adjusted to a speed of 0.5 mm/m. The statistical analysis was done by Levene’s test, which showed homogeneity of variances among groups (F =2.21; p < 0.1). “Student t test” showed that signifi cant differences were found between groups. The modifi cation of the abutment surface through laser caused an increase in pull-out resistance of crowns cemented with zinc phosphate from 430.66 N to 1.514,87 N.