Analysis of adhesive interface in root canals irradiated by Er,Cr:YSGG laser after luting a fiber post |
| |
| Authors: | Aline Evangelista Souza‐Gabriel Manoel Damião Sousa‐Neto Mirian Saavedra Lopes Ururahy Lilian Mendes Andrade Juliana Jendiroba Faraoni Umberto Romeo Regina Guenka Palma‐Dibb |
| |
| Affiliation: | 1. Department of Restorative Dentistry, School of Dentistry of Ribeir?o Preto, University of S?o Paulo, CEP, SP, Brazil;2. Department of Oral and Maxillofacial Science, “Sapienza” University of Rome, Rome, Italy |
| |
| Abstract: | This study evaluated the effect of Er,Cr:YSGG laser on the root canal dentin after luting a fiber post. Twenty‐four bovine teeth roots were prepared using NiTi instruments and filled with Sealer 26 and gutta‐percha. Post spaces were prepared and roots were distributed according to dentin treatment (n = 8): 2.5%NaOCl (group control), Er,Cr:YSGG laser (1.5 W, 20 Hz, 20 s) (group test 1) or 2.5%NaOCl + Er,Cr:YSGG laser (group test 2). Fiber posts were luted using adhesive cement (Rely X U200, 3M) and roots were prepared to confocal laser scanning microscopy (CLSM) and scanning electron microscope (SEM). The morphology of interface, thickness of cement, and the gaps and tags were analyzed. Non‐parametrical data for thickness of cement were submitted to Friedman and Kruskall–Wallis tests (α = 0.05) and parametrical data for gaps to ANOVA (α = 0.05). CLSM of the cement thickness and gaps revealed no significant difference in surface treatment (NaOCl, Er,Cr:YSGG laser and NaOCl + Er,Cr:YSGG laser) (p > .05) and canal thirds (cervical, middle, and apical) (p > 0.05). SEM showed tags and a residual layer of cement adhered to dentin, mainly in laser‐irradiated specimens. The pretreatment of root canal with Er,Cr:YSGG laser previously to luting the fiber post with a self‐adhesive cement did not influence the cement thickness and gaps but affected the dentin interaction. |
| |
| Keywords: | cement thickness gaps/tags interface morphology resin cement |
|
|
