1064-nm Nd:YAG and 980-nm Diode Laser EDTA Agitation on the Retention of an Epoxy-Based Sealer to Root Dentin

Autor(es)

Helena Suleiman de Macedo ^[1] ; Danielle Cristine Furtado Messias ^[2] ; Fuad Jacob Rached-Júnior ^[3] ; Ligia Teixeira de Oliveira ^[4] ; Yara Teresinha Correa Silva-Sousa ^[5] ; Walter Raucci-Neto ^[6]

Afiliação do(s) autor(es)

^[1] University of Ribeirão Preto - Brasil

^[2] University of Ribeirão Preto - Brasil

^[3] University of Ribeirão Preto - Brasil

^[4] University of Ribeirão Preto - Brasil

^[5] University of Ribeirão Preto - Brasil

^[6] University of Ribeirão Preto - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Dental Journal; v. 27, n. 4, p. 424-429, 2016-08-00.

Resumo

Abstract Root canal irrigants are used to minimize the negative effects of smear layer on endodontic sealer retention. The aim of this study was to evaluate the efficacy of agitation of 17% ethylenediaminetetraacetic acid (EDTA) with ultrasonic, 1064-nm Nd:YAG and 980-nm diode laser on the retention of an epoxy-based sealer to the root canal walls. Forty single-rooted bovine teeth were instrumented with ProTaper rotary system and divided into four groups according to the final irrigation protocol (n = 10): (1) 17% EDTA (control); (2) 17% EDTA with 50-s ultrasonic agitation; (3) 17% EDTA with 50-s diode laser (2-W) agitation; and (4) 17% EDTA with 50-s Nd:YAG (1.5-W) laser agitation. After endodontic filling with gutta-percha F5 master cone and Sealer 26, the roots were sectioned at the cervical, middle, and apical root thirds to obtain 1.5-mm slices. Push-out tests were performed using a universal testing machine at a 1 mm/min crosshead speed. Data were analyzed using two-way ANOVA and Tukey's tests (α=0.05). Apical root thirds had significant higher retention values than cervical and middle thirds (p < 0.05). EDTA with 1064-nm Nd:YAG or 980-nm diode laser presented the highest retention values and was significantly different from EDTA with ultrasonic agitation and EDTA only (p < 0.05). Adhesive failures were predominant to EDTA only group. Mixed failures were predominant to all agitation groups. 1064-nm Nd:YAG and 980-nm diode laser EDTA agitation enhanced the retention of the epoxy-based sealer to the root canal walls compared with that due to EDTA only or EDTA with ultrasonic agitation. (AU)

• Processo FAPESP: 13/23535-7 - Avaliação dos efeitos dos lasers Nd:YAG 1.064 nm e diodo 980 nm em associação à protocolos irrigantes na microdureza e rugosidade da dentina radicular
• Beneficiário: Helena Suleiman de Macedo
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica