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Evaluation of chemical and morphological changes in radicular dentin after different final surface treatments

Lopes, Fabiane Carneiro ; Roperto, Renato ; Akkus, Anna ; Silva Sousa, Yara Teresinha Corrêa ; Sousa‐Neto, Manoel D.

Microscopy research and technique, 2018-09, Vol.81 (9), p.973-979 [Periódico revisado por pares]

United States: Wiley Subscription Services, Inc

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Título:
Evaluation of chemical and morphological changes in radicular dentin after different final surface treatments
Autor: Lopes, Fabiane Carneiro ; Roperto, Renato ; Akkus, Anna ; Silva Sousa, Yara Teresinha Corrêa ; Sousa‐Neto, Manoel D.
Assuntos: Chemical elements ; Cuspid - anatomy & histology ; Cuspid - chemistry ; Cuspid - radiation effects ; Dentin ; Dentin - anatomy & histology ; Dentin - chemistry ; Dentin - radiation effects ; Distilled water ; Edetic acid ; Endodontics ; energy‐dispersive X‐ray spectroscopy ; Ethylenediaminetetraacetic acids ; Evaluation ; Humans ; Kruskal-Wallis test ; Lasers ; Low-Level Light Therapy ; Microscopy, Electron, Scanning ; Morphology ; Neodymium lasers ; Organic chemistry ; Physical characteristics ; root canal ; Root canals ; Scanning electron microscopy ; SEM ; Semiconductor lasers ; Sodium hypochlorite ; Spectrometry, X-Ray Emission ; Spectroscopy ; Statistical analysis ; Statistical methods ; Surface Properties - radiation effects ; Surface treatment ; Tooth Root - anatomy & histology ; Tooth Root - chemistry ; Tooth Root - radiation effects ; Tooth, Nonvital ; Variance analysis ; Water treatment ; X ray spectra ; YAG lasers
É parte de: Microscopy research and technique, 2018-09, Vol.81 (9), p.973-979
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Descrição: The aim of this study was to evaluate the chemical and morphological effects of different lasers as a final surface treatment for endodontic therapy through energy dispersive X‐ray spectroscopy (EDS) and scanning electron microscopy (SEM) respectively. Twenty‐five maxillary canines were selected and instrumented with K3 system. Roots were randomly distributed into five groups (n = 5) according to the surface treatment: GI (distilled water), GII (NaOCl + EDTA), GIII (NaOCl + EDTA + 980 nm diode laser), GIV (NaOCl + EDTA+ 1,064 nm Nd:YAG laser), and GV (NaOCl + EDTA+ 2,780 nm Er, Cr:YSGG laser). Lasers were applied for 20 s and samples were bisected, exposing the treated surface and then subjected to elements quantification by EDS and morphological evaluation by scanning electron microscope (SEM). EDS data were submitted to ANOVA‐two way, and SEM scores were submitted to two‐way Kruskal–Wallis and Dunn's tests. The EDS analysis showed no difference for the chemical elements and Ca/P ratio between groups (p > .05). Statistical analysis showed more intense results for GV and less intense results for GI (p < .05). The GIII showed an amorphous organic matrix surface, while GV provided greater removal of intertubular dentin forming craters, and GIV promoted dentin fusion. The EDS method used in this study was not able to verify any chemical changes in root canal dentin; Nd:YAG, Er, Cr:YSGG, and 980 nm diode laser were capable of modifying the dentin morphology, correlating characteristics features for each one, which are essential clinical knowledge to establish the correct indication for each case. Research Highlights EDS was not able to verify any chemical changes in root canal dentin after 980 nm diode, Nd:YAG and Er;Cr:YSGG laser treatments Nd:YAG, Er, Cr:YSGG, and 980 nm diode laser modified dentin morphology, correlating characteristics features for each one.
Editor: United States: Wiley Subscription Services, Inc
Idioma: Inglês

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Evaluation of chemical and morphological changes in radicular dentin after different final surface treatments

Lopes, Fabiane Carneiro ; Roperto, Renato ; Akkus, Anna ; Silva Sousa, Yara Teresinha Corrêa ; Sousa‐Neto, Manoel D.

United States: Wiley Subscription Services, Inc

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