title: Effects of QMix and ethylenediaminetetraacetic acid on decalcification and erosion of root canal dentin.
abstract: The aim of this study was to evaluate the effect of initial NaOCl on the decalcification and erosion ability of EDTA and QMix. Sixty-maxillary-incisors were bisected longitudinally and the tooth-halves were used. The experiment was conducted in two-sets. In set-I, 80-tooth halves were treated in the presence or absence of initial NaOCl and EDTA. In set-II, 40-tooth halves were immersed in NaOCl and QMix. After each treatment, calcium-ion release was determined with flame photometry. The erosion was imaged using SEM. Initial NaOCl led to concentration- and time-dependent increase in calcium removal effect of 17% EDTA (p < .05). The rate of calcium removal and root canal wall erosion was considerably more severe with the use of 5% NaOCl for 3 min (p < .05). QMix as a final solution showed less decalcification and erosion than 17% EDTA when used 5% NaOCl as an initial irrigant (p < .05). Optimizing the concentration and application time of NaOCl can decrease the decalcification effect of chelating agents.
authors: Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey. hacer.yilmaz@hacettepe.edu.tr.
authors: Hacer
authors: H
authors: Aksel
authors: Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
authors: Ahmet
authors: A
authors: Serper
authors: Department of Chemistry, Faculty of Arts and Science, Gazi University, Ankara, Turkey.
authors: Sukru
authors: S
authors: Kalayci
authors: Department of Chemistry, Faculty of Arts and Science, Gazi University, Ankara, Turkey.
authors: Guler
authors: G
authors: Somer
authors: Biomedical Engineering Department, TOBB University, Ankara, Turkey.
authors: Cevat
authors: C
authors: Erisken
mesh_terms: D000328:Adult; D001645:Biguanides / Q000494:pharmacology*; D002118:Calcium / Q000032:analysis; D003648:Decalcification Technique; D003804:Dentin / Q000187:drug effects*; D004492:Edetic Acid / Q000494:pharmacology*; D006801:Humans; D007180:Incisor / Q000187:drug effects; D008875:Middle Aged; D011108:Polymers / Q000494:pharmacology*; D012390:Root Canal Therapy; D014077:Tooth Erosion / Q000139:chemically induced
chemical_list: D001645:Biguanides; D011108:Polymers; C557698:QMix root canal irrigant; D004492:Edetic Acid; D002118:Calcium
keywords: EDTA; QMix; decalcification; dentin; erosion