Effect of eugenol-based endodontic sealer on the adhesion of intraradicular posts cemented after different periods

Autor: Larissa Lustosa Lima Dias, Alessandro Rogério Giovani, Yara Teresinha Corrêa Silva Sousa, Luiz Pascoal Vansan, Edson Alfredo, Manoel Damião Sousa-Neto, Silvana Maria Paulino
Jazyk: angličtina
Rok vydání: 2009
Předmět:
Zdroj: Journal of Applied Oral Science, Vol 17, Iss 6, Pp 579-583 (2009)
Druh dokumentu: article
ISSN: 1678-7757
1678-7765
DOI: 10.1590/S1678-77572009000600008
Popis: OBJECTIVE: This study evaluated in vitro the influence of an eugenol-based sealer (EndoFill) on the retention of stainless steel prefabricated posts cemented with zinc phosphate and resin-based (Panavia F) cements after different periods of root canal obturation, using the pull-out test. MATERIAL AND METHODS: Sixty upper canines were decoronated and the roots were embedded in resin blocks. The specimens were distributed into 3 groups, according to the period elapsed between canal obturation and post cementation: Group I - immediately; Group II - 72 h and Group III - 4 months. The groups were subdivided according to the type of cement used for post cementation: A - zinc phosphate and B - Panavia F. Following the experimental periods, specimens were subjected to pullout test in an Instron machine with application of tensile force at a crosshead speed of 0.5 mm/min until post dislodgement. The maximum forces required for post removal were recorded (kN) and means were subjected to statistical analysis by 2-way ANOVA and Tukey-Kramer test (α=0.001) RESULTS: There were statistically significant differences (p0.05) were found between the three post cementation periods, regardless of the cement. CONCLUSIONS: It was concluded that the eugenol-based sealer influenced the tensile strength of the posts cemented with the resin cement, but had no influence on the time waited between root canal obturation and post space preparation/post cementation.
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