title: Assessment of the tensile strength of hexagonal abutments using different cementing agents.
abstract: The aim of this study was to assess the uniaxial tensile strength after thermal cycling in replicas of CeraOne abutments (abutment and coping sets), using four types of cements (n = 10). A zinc phosphate cement (Fosfato de Zinco/ SSW), a resin-modified glass ionomer cement (RelyX luting / 3M-ESPE), a zinc oxide-eugenol cement (ZOE/ SSW) and a zinc oxide cement without eugenol (TempBond NE/ KERR) were used. After cementation, the samples were submitted to thermal cycles (1,000 cycles, 5 degrees C +/- 2 degrees to 55 degrees C +/- 2 degrees) for thirty seconds in each bath. Next, the samples were submitted to the tensile test in a universal test machine (0.5 mm/min). The data were submitted to ANOVA and the Tukey-Kramer test (p < 0.05), and statistically significant difference was found among the cements. The highest tensile strength mean value found was for zinc phosphate cement (33.6 kgf) followed by the resin-modified glass ionomer cement (20.5 kgf), zinc oxide-eugenol cement (8.4 kgf) and the temporary cement (3.1 kgf). Therefore, it was found that the permanent cements presented higher tensile strength, and the temporary cement could be used in situations requiring reversibility and the removal of cemented dental implant-supported prostheses.
authors.affiliation: São Leopoldo Mandic Dental School, Campinas, SP, Brazil.
authors.forename: Carlos
authors.initials: C
authors.lastname: Wahl
authors.forename: Fabiana Mantovani Gomes
authors.initials: FM
authors.lastname: França
authors.forename: Rui Barbosa
authors.initials: RB
authors.lastname: Brito
authors.forename: Roberta Tarkany
authors.initials: RT
authors.lastname: Basting
authors.forename: Henrique
authors.initials: H
authors.lastname: Smanio
mesh_terms: D000704:Analysis of Variance; D002484:Cementation / Q000379:methods; D000044:Dental Abutments; D003738:Dental Cements / Q000737:chemistry*; D015921:Dental Implants; D008422:Materials Testing; D013718:Tensile Strength; D014025:Titanium / Q000737:chemistry; D015035:Zinc Oxide-Eugenol Cement / Q000737:chemistry; D015036:Zinc Phosphate Cement / Q000737:chemistry
chemical_list: D003738:Dental Cements; D015921:Dental Implants; D015035:Zinc Oxide-Eugenol Cement; D015036:Zinc Phosphate Cement; D014025:Titanium