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versão impressa ISSN 0797-0374versão On-line ISSN 1688-9339


MARTINELLI, Sylvia; ALBURQUERQUE, Gimena  e  SILVA, Lorena. Effect of EDTAC and citric acid on dentinal walls. Variation of exposure time and dental age. Odontoestomatología [online]. 2019, vol.21, n.34, pp.5-15.  Epub 01-Dez-2019. ISSN 0797-0374.

The aim of this study was to find a formula and application time for chelators effective in cleaning the root canal without causing erosion and considering dental age. The sample included 120 teeth: 60 taken from young patients and 60 from adult patients. They were instrumented and irrigated with 2.5% sodium hypochlorite (NaOCl). Each subgroup was divided randomly into six groups: 4 groups of 12 teeth and 2 control groups of 6 teeth. In the final irrigation, 17% ethylenediaminetetraacetic acid plus Cetavlon (EDTAC) or 10% citric acid was applied for 1 or 3 minutes according to each group. The results showed a high level of cleanliness, and a few showed erosion of the dentinal tubules. Satisfactory results were obtained in the removal of the smear layer when applying EDTAC or citric acid combined with NaOCl. Erosion was present in different degrees regardless of dental age, but it was indeed affected by the irrigant exposure time.

Palavras-chave : chelators; smear layer; dentin permeability; erosion.

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