Effects of different lasers on organic/inorganic ratio of radicular dentin

Lasers in Medical Science
F C LopesM D Sousa-Neto

Abstract

The aim of this study was to evaluate the chemical stability of endodontic-treated root dentin after different laser irradiations through Raman spectroscopy. Fifty maxillary canines were selected and prepared with K3 system. Roots were randomly distributed into five groups (n = 10) according to the surface treatment: GI (water), GII (NaOCl + EDTA), GIII (NaOCl + EDTA + 980 nm Diode laser), GIV (NaOCl + EDTA+ 1064 nm Nd: YAG laser) and GV (NaOCl + EDTA+ 2780 nm Er,Cr: YSGG laser). Lasers were applied for 20 s. Samples were bisected, and the organic and inorganic content of dentin was analyzed by Raman spectroscopy. Data were submitted to ANOVA and Tukey tests (p < 0.05). None of the surface treatments alter the inorganic content (cts) (p = 0.183). Roots irradiated with Er,Cr: YSGG laser had a reduced collagen content (GV-290.7 ± 41.7) compared with the water-treated roots (GI-328.3 ± 63.5) and those treated with NaOCl + EDTA (GII-333.9 ± 55.8). Roots irradiated with Er,Cr: YSGG laser also showed a higher inorganic/organic ratio (GV-9.5 ± 1.1) than roots treated with water (GI-7.7 ± 1.5), NaOCl + EDTA (GII-8.0 ± 1.4) and diode laser (GIII-8.2 ± 1.6). Both organic and inorganic contents increased from cervical to apical thirds in ...Continue Reading

References

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Apr 17, 2013·Photomedicine and Laser Surgery·Burak SadıkMurat Cehreli
Sep 17, 2013·Lasers in Medical Science·Hüseyin Sinan Topçuoğlu, Mustafa Köseoğlu
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Oct 2, 2014·Brazilian Oral Research·Claudio PoggioMarco Chiesa

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Citations

Sep 23, 2016·Brazilian Dental Journal·Helena Suleiman de MacedoWalter Raucci-Neto
Oct 9, 2018·Microscopy Research and Technique·Fabiane Carneiro LopesManoel D Sousa-Neto
Dec 13, 2018·Journal of Applied Oral Science : Revista FOB·Giovanna Speranza ZabeuSérgio Kiyoshi Ishikiriama
Jul 10, 2018·Lasers in Medical Science·Laís Lima PelozoAline Evangelista Souza-Gabriel
Dec 16, 2018·Head & Neck·Lívia Bueno CampiManoel Damião de Sousa-Neto

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