The effect of the temperature changes of EDTA and MTAD on the removal of the smear layer: a scanning electron microscopy study.
The purpose of this study was to determine the effectiveness of EDTA and MTAD at different temperatures as a final irrigant to remove the smear layer after the use of 5.25% NaOCl. Seventy-eight human mandibular premolars with single straight canal were prepared by a crown-down technique using rotary 0.06 taper nickel-titanium files. Final irrigation was performed with EDTA and MTAD at different temperatures. The removal of the smear layer in the coronal, middle and apical level of each canal was examined under scanning electron microscope. No difference was found between the EDTA and MTAD at 4°C, 25°C, and 37°C temperatures regardless of the canal level (coronal, middle and apical) (P = 0.286). In EDTA-25, EDTA-37, MTAD-25, and MTAD-37 groups, the difference among the coronal, middle, and apical levels were statistically no significant (P > 0.05). Our findings showed that EDTA and MTAD at 25°C and 37°C are more effective than EDTA and MTAD at 4°C even in the apical level.
Department of Endodontics, Faculty of Dentistry, Bülent Ecevit University, Zonguldak, Turkey.
Ersan
E
Çiçek
Department of Endodontics, Faculty of Dentistry, Ondokuz Mayıs University, Samsun, Turkey.
Özgür
Ö
Keskin
D001641:Bicuspid / Q000187:drug effects; D019343:Citric Acid / Q000494:pharmacology*; D004318:Doxycycline / Q000494:pharmacology*; D004492:Edetic Acid / Q000494:pharmacology*; D006801:Humans; D008855:Microscopy, Electron, Scanning; D011136:Polysorbates / Q000494:pharmacology*; D012388:Root Canal Irrigants / Q000494:pharmacology*; D016369:Smear Layer / Q000378:metabolism*; D012973:Sodium Hypochlorite / Q000378:metabolism*; D013499:Surface Properties / Q000187:drug effects* / Q000528:radiation effects*; D013696:Temperature
C475043:MTAD (intracanal irrigant); D011136:Polysorbates; D012388:Root Canal Irrigants; D019343:Citric Acid; D004492:Edetic Acid; D012973:Sodium Hypochlorite; D004318:Doxycycline
EDTA; MTAD; scanning electron microscopy; smear layer; temperature