Influence of prior 810-nm-diode intracanal laser irradiation on hydrophilic resin-based sealer obturation

• Autor(a) principal: Moura-Netto, Cacio
• Data de Publicação: 2012
• Outros Autores: Palo, Renato Miotto [UNESP], Afonso Camargo, Samira Esteves [UNESP], Jent, Carol, Leonardo, Renato de Toledo [UNESP], Marques, Marcia Martins
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/S1806-83242012005000010; http://hdl.handle.net/11449/22694
• topic: Dental Pulp Cavity; Root Canal Filling Materials; Laser Therapy; Root Canal Therapy; Endodontics

Dentin wall structural changes caused by 810-nm-diode laser irradiation can influence the sealing ability of endodontic sealers. The objective of this study was to evaluate the apical leakage of AH Plus and RealSeal resin-based sealers with and without prior diode laser irradiation. Fifty-two single-rooted mandibular premolars were prepared and divided into 4 groups, according to the endodontic sealer used and the use or non-use of laser irradiation. The protocol for laser irradiation was 2.5W, continuous wave in scanning mode, with 4 exposures per tooth. After sample preparation, apical leakage of 50% ammoniacal silver nitrate impregnation was analyzed. When the teeth were not exposed to irradiation, the Real Seal sealer achieved the highest scores, showing the least leakage, with significant differences at the 5% level (Kruskal-Wallis test, p = 0.0004), compared with AH Plus. When the teeth were exposed to the 810-nm-diode laser irradiation, the sealing ability of AH Plus sealer was improved (p = 0282). In the Real Seal groups, the intracanal laser irradiation did not interfere with the leakage index, showing similar results in the GRS and GRSd groups (p = 0.1009).