Flexural strength and marginal adaptation of temporary restorative materials used in endodontically treated teeth
Lucas David GALVANI, Ester Alves Ferreira BORDINI, Wilfredo Gustavo Escalante OTÁROLA, Jéssika Mayhara Pereira MORAIS, José Rodolfo Estruc Verbicário dos SANTOS, Andréa Abi Rached DANTAS e Milton Carlos KUGA
Objectve: This study evaluated the flexural strength and marginal adaptation of Clip F (CF), Bifix Temp (BT), Systemp.onlay (SO), Fill Magic Tempo (FT) and Provi Master F (PF) in endodontically-treated coronal dentin. Methods: Firstly, ten specimens of each restorative material were prepared, and submitted to flexural strength test using eletromechanical testing machine. Then, the pulp chamber of 50 maxillary premolar were restored using one of the provisional restorative materials (n = 10) in order to evaluate the marginal desadaptation extension. After 7 days, the interface between dentin and temporary restorative material, in crown middle third, was subjected to scanning electron microscopy (500X). Marginal desadaptation and gaps extensions in dentin-temporary restorations interface were measured using Image J software. Results: CF and BT presented the highest and the lowest flexural strength values, respectively (p <0.05). SO, FT and PF showed similar values (p> 0.05). In relation to marginal desadaptation (%) and gap extensions (μm), CF presented the lowest marginal desadaptation and gaps incidence values (p < 0.05). BT showed intermediate values, but lower than SO, FT e PF (p < 0.05), which were similar among them (p > 0.05). Conclusion: CF presented the best flexural strength and the lowest marginal desadaptation and gaps extension.
Keywords: Dental Restoration, Temporary. Dental Materials. Endodontics.
How to cite: Galvani LD, Bordini EAF, Otárola WGE, Morais JMP, Santos JREV, Dantas AAR, Kuga MC. Flexural strength and marginal adaptation of temporary restorative materials used in endodontically treated teeth. Dental Press Endod. 2020 Jan-Apr;10(1):32-7.
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