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    Does melatonin as an irrigation solution increase the adhesive quality of root canal sealer?
    (2019) Tosun, Samet; Karataslioglu, Emrah
    Aim: To evaluate the push-out bond strength of AH-Plus when Melatonin used as an endodontic irrigation.Material and Methods: Ninety extracted human anterior incisors were selected randomly. The teeth were instrumented with R25 Reciproc® files and irrigated according to one of the irrigation protocols included as (n=15): G1: 5.25% NaOCl; G2: 17% EDTA; G3: 0.2% Melatonin; G4: 5.25% NaOCl + 17% EDTA; G5: 5.25% NaOCl + 0.2% Melatonin; G6: 0.2% Melatonin + 17% EDTA. After the root canal obturation procedures, roots were sectioned in coronal, middle and apical of root thirds. Push-out tests were performed Result were analyzed by ANOVA and Tukey tests (P0.05).Results: In the coronal thirds, there were significant differences among the groups. Melatonin+EDTA group showed had greater the bond strength than other groups, except NaOCl+Melatonin. In the middle thirds, NaOCl group showed significantly the lowest bond strength than other groups. In the apical thirds, NaOCl and melatonin groups showed significantly worse (P0.05). Conclusion: The use of Melatonin as a final irrigant significantly increased the push out bond strength of an AH-Plus sealer to root dentin. Further studies are needed to determine appropriate concentration and time used for melatonin.
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    Effects of caffeic acid phenethyl ester on root canal dentin: A SEM/EDX study
    (2020) Karataslioglu, Emrah; Tosun, Samet
    Aim: To evaluate the effects of Caffeic Acid Phenethyl Ester (CAPE) and its combination with EDTA and NaOCl on the surface of root canal dentine. Material and Methods: Ninety human extracted central anterior teeth were instrumented. Teeth were divided into six groups according to irrigation regime: (n=15). Group 0 (negative control) saline; group 1: 5.25% NaOCl/ distilled water (positive control); group 2: 0.5% CAPE; group 3: 5.25% NaOCl/17% EDTA; group 4: 5.25% NaOCl/0.5% CAPE and group 5: 0.5% CAPE/17% EDTA. Roots were splitted longitudinally and examined under scanning electron microscopy. Energy Dispersive X-Ray (EDX) method was used to analyse the root dentine mineral content. Results: A significant difference in smear layer (SR) was found between group 3 and group 4 (P0.05).Conclusions: In this study, CAPE did not result in better SR removal compared to NaOCl at all levels of the root canals. Overall, Group 5 was as effective as group 3 in SR removal. The mineral content of root dentin has changed.