Çiftçioğlu, ElifBarut, GüherIşık, VasfiyeArıcan, BurçinKaragöz-Küçükay, Işıl2023-06-242023-06-242023Çiftçioğlu, E., Barut, G., Işık, V., Arıcan, B., & Karagöz-Küçükay, I. (2023). Influence of different dentin conditioning protocols on bond strength of a bioceramic root canal filling. Acta Stomatologica Croatica, 57(2), pp. 155-166. https://doi.org/10.15644/asc57/2/60001-70191846-0410https://doi.org/10.15644/asc57/2/6https://hdl.handle.net/20.500.13055/479Objective: Bioceramic-based sealers, in combination with bioceramic-coated gutta-perchas, have become more commonly used in root canal obturation. The present study aimed to assess the influence of laser-assisted dentin conditioning compared with conventional conditioning protocols on the push-out bond strength (PBS) of a bioceramic-based root canal filling. Material and Methods: Sixty extracted mandibular premolars with one root canal were instrumented with EndoSequence rotary files up to size 40/0.04. Four types of dentin conditioning protocols were used: 1) 5.25% NaOCl (control), 2) 17% EDTA+5.25% NaOCl, 3) Diode laser-agitated 17% EDTA+5.25% NaOCl, 4) Er,Cr:YSGG laser irradiation+5.25% NaOCl. Teeth were obturated using the single-cone technique with EndoSequence BC sealer+BC points (EBCF). After having obtained 1-mm-thick horizontal slices from the apical, middle and coronal root thirds, push-out test was carried out, and failure modes were determined. The data were analyzed by two-way analysis of variance and Tukey’s test with a significance level of p<0.05. Results: The apical segments showed the highest PBS in all groups (p<0.05). In the apical segments, EDTA+NaOCl and diode laser agitated EDTA increased the PBS compared to the control (p=0.0001) and Er, Cr: YSGG laser (p=0.011 and p=0.027, respectively) groups. Both laser-used groups revealed significantly higher PBS values in the middle and coronal segments than EDTA+NaOCl (p<0.05). The bond failure was predominantly cohesive without any significant difference among the groups (p>0.05). Conclusions: Laser-assisted dentin conditioning had distinct effects on the PBS of the EBCF at different root segments. Although Er, Cr: YSGG was ineffective in the apical segments, generally, laser-assisted dentin conditioning affected PBS more favorably than conventional irrigation groups, with a more pronounced effect in the diode laser-agitated EDTA group.eninfo:eu-repo/semantics/openAccessBioceramic Root Canal FillingDiode LaserErCrYSGG LaserBond StrengthArticle10.15644/asc57/2/6572155166WOS:0010223287000062-s2.0-85163652230PMID: 37427364Q3