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Influence of cement type and thickness on polyfiber post adhesion
INTRODUCTION: To evaluate the effect of two different post space diameters and related resin cement film thicknesses on the bond strength of a polyfiber post. MATERIALS AND METHODS: A total of 48 premolars were randomly divided into two according to the post space diameter: 1.1 mm and 1.5 mm. Then e...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Medknow Publications & Media Pvt Ltd
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4056398/ https://www.ncbi.nlm.nih.gov/pubmed/24944450 http://dx.doi.org/10.4103/0972-0707.131789 |
Sumario: | INTRODUCTION: To evaluate the effect of two different post space diameters and related resin cement film thicknesses on the bond strength of a polyfiber post. MATERIALS AND METHODS: A total of 48 premolars were randomly divided into two according to the post space diameter: 1.1 mm and 1.5 mm. Then each group was divided into three sub-groups according to luting cement used: RelyX U100, Panavia F2.0/ED primer, Clearfil SA cement. Spirapost was then luted into the canal using luting cements. Two slices were obtained from each root specimen. Push-out tests were performed. Data was analyzed with Kruskal-Wallis and Connover post-hoc and Mann-Whitney U-test (P < 0.05). RESULTS: Push-out bond strength was found to vary significantly according to type of adhesive system and post space diameter size (P < 0.05). The self-adhesive resin cement RelyX U100 had significantly higher bond strengths compared with the other adhesive system (P < 0.05). The self-etch adhesive system (Panavia F2.0) showed significantly lower bond strengths compared with the other systems (P < 0.05). There was a significant interaction between the luting systems and post space diameter (P < 0.05). CONCLUSION: The increases in post space diameter significantly reduced the bond strength of Spirapost to root dentine for both groups. |
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