Electronic work length with Raypex 6 in lower molars canals

Norberto J Broon, Álvaro Cruz, Claudia A. Palafox Sánchez, Rocío Stefany Padilla Delgado, Analí Torres Camarena


Objective: To assess precision of Raypex 6 to locate foramen and establish placement in the canal -dentin-cement (CDC) area in lower molar canals by means of diaph anization. Material and methods: 52 permeable canals from 20 extracted lower molars immersed in alginate were used. Crown opening, location, permeabilization and irrigation with 5.25% sodium hypochlorite were performed. Electronic conductometry was obtained with Raypex 6 electronic locator. A K #15/20 fi le type was inserted in all samples which had labial clip inserted in alginate. The device’s screen indicated position of the apical foramen in the red bar, K fi les position was readjusted in the fi rst two yellow bars, the fi le was then fixated with acrylic resin. Teeth were diaphanized by means of the nitric acid technique; teeth were kept in methyl salicylate. Samples were analyzed with clinical microscope at 16x, they were subjectively assigned a value called precise when the tip of the fi le was located at 0-0.5 mm, external or positive (+), when the fi le was +0.1 mm or more, and short or negative (-) when it was -0.51 mm or less with respect to the apical foramen. Results: Of the 52 analyzed samples, 40 were found to be precise, seven long and five short. Descriptive statistics showed 76.9% precision. Conclusion: Electronic working length with Raypex 6 showed suitable precision in mesial canals of lower molars.

Palabras clave

Working length, Raypex 6, endodontics.

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DOI: http://dx.doi.org/10.22201/fo.1870199xp.2018.22.2%20Ing.65273


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