Influence of Blood on the Accuracy of Raypex 5 and Root ZX Electronic Foramen Locators: An In Vivo Study

Saatchi, Masoud; Aminozarbian, Mohammad Ghasem; Noormohammadi, Hamid; Baghaei, B

doi:10.1590/0103-6440201600678

Cited by 4 publications

(5 citation statements)

References 24 publications

(37 reference statements)

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“…Khandewal et al [14] conducted comparative evaluation of accuracy of Raypex5 and Apex NRG XFR EALs with conventional radiography in ex vivo study. They obtained the same accuracy in determining the WL for both EALs when compared with radiography Saatchi et al [52] tested Raypex 5 and Root ZX in the presence of blood and also found no significant differences. Al-Hadlaq [53] evaluated the accuracy of the Root ZX and two compact apex locators, the Root ZX mini and Mini Apex Locator, in the presence of different endodontic solutions, including 2% CHX and NaOCl at 5.25, 2.625, and 1% concentrations.…”

Section: Discussionmentioning

confidence: 92%

The influence of two forms of chlorhexidine on the accuracy of contemporary electronic apex locators

et al. 2019

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BackgroundAccurate determination of working length (WL) is crucial for the success of endodontic therapy. The aim of this study was to determine the influence of 2% chlorhexidine digluconate solution, 2% chlorhexidine digluconate gel and 2% hypochlorite solution on the accuracy of two devices: the Raypex 5 and the ApexDal.MethodsTwenty-nine single-rooted human teeth were used in this study. The crowns were cut horizontally and embedded in an alginate mass. In each tooth, six endodontic measurements were made using two electronic apex locators (EALs): a Raypex 5 and an ApexDal. For each EAL, measurements were taken with the following products: 2% chlorhexidine solution (CHX-S group), 2% chlorhexidine gel (CHX-G group) and 2% NaOCl (NaOCl group). After performing an endodontic measurement, the endodontic instruments were stabilized with flow resin composite. Afterwards, the roots were removed from the alginate mass, and the apical one-third of each root was cut lengthways to recover the canal system. Last, the distance between the file tip and the apical foramen was measured under a microscope at 60 x magnification.ResultsStatistically significant differences were found between CHX-S and NaOCl and CHX-G and NaOCl, but no significant differences were detected between CHX-S and CHX-G during the testing of both devices. No statistically significant differences were observed between the Raypex 5 and ApexDal for all intracanal media tested.ConclusionThe EALs Raypex 5 and ApexDal had higher accuracy in the anatomical foramen of the root containing chlorhexidine in the gel or in the solution form than in the canal containing sodium hypochlorite.

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Section: Discussionmentioning

confidence: 92%

The influence of two forms of chlorhexidine on the accuracy of contemporary electronic apex locators

et al. 2019

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“…Previous studies have showed that EALs often present inaccurate results, when fluids and blood are present in the root canal, 25,26 assuming that a root canal with vital tissue may demonstrate a different impedance compared to a necrotic one. It is important to note that those studies used previous generations of EALs that had limitations on accuracy.…”

Section: Foramen Constrictionmentioning

confidence: 99%

“…Since blood is electrolyte, it may influence the accuracy of EALs. Saatchi et al 26 reported that the accuracy of Root ZX decreased slightly in the presence of blood in the root canal. In a study with 36 extracted teeth, Ebrahim et al 27 observed that in the presence of sodium hypochlorite, the apex locator Root ZX II was more accurate, than when used in a root canal filled with blood.…”

Section: Foramen Constrictionmentioning

confidence: 99%

Accuracy of Root ZXII, E-PEX and FIND apex locators in teeth with vital pulp: an in vivo study

et al. 2021

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This research evaluated, in vivo, the accuracy of three electronic apex locators -EALs (Root ZXII, E-PEX and FIND) in teeth with vital pulp submitted to biopulpectomy, preserving the periodontal stump. For this study, 90 single-rooted teeth with extraction indication were selected. After positive pulpal cold sensitivity test, pulp chamber access was performed. The cervical and middle thirds of root canals were instrumented with Reciproc R25, and the K#15 file was used as a standard instrument to determine working length, forming 2 groups: Constriction (insertion of the instrument until the apical constriction limit) and Foramen (insertion of the instrument until the foramen and then repositioning at constriction, without removing the file from the canal). The hand file was stabilized with a light-cured flow resin. After extraction, the samples were analyzed through microCT SkyScan 1272, with CTAN software, which evaluated the proximity between the tip of the file to the apical constriction, providing data for comparative analysis using Kruskal-Wallis and Dunn tests (p<0.05). There was a statistically significant difference in the abilities of the EALs to detect the apical constriction after reaching the foramen with Root ZX II showing higher accuracy (89%). However, there was no difference in the accuracy of the three EALs in detecting the apical constriction without reaching the foramen. Based on the present results, we conclude that EALs may show accurate measures in detecting apical constriction and foramen, even without damaging the periodontal stump in biopulpectomy.

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“…Ravanshad et al (17) evaluated the accuracy of the WL with Raypex 5, being acceptable in 90% of the cases in the final obturation. In root canals with the presence of blood, Saatchi et al (24) observed the accuracy of 86.2% for Root ZX and 83.3% for Raypex 5, with a range of +0.5 mm from AF.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Electronic Apex Locators in Human Teeth Diagnosed With Apical Periodontitis

et al. 2019

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Electronic apex locators (EAL) have been used to establish the working length (WL) in root canal treatment. In teeth diagnosed with apical periodontitis, resorption of tooth apical structures can lead to difficulties to obtain an appropriate WL. The aim was to compare the capacity of three EAL’s (Root ZX II, Raypex 6 and Endo-Eze Quill) to locate the tip of the K-file between 0 to -0.5 mm from the apical foramen (AF) on teeth diagnosed with asymptomatic apical periodontitis (AAP). Electronic working length was performed on 60 roots with AAP. A K-file #15 was inserted in the root canal until the apical foramen (AF) was located, and followed was re-adjusted to -0.5 mm through observation in EAL display. The K-file was fixed to the tooth with composite and teeth were extracted. The 4 apical millimeters were worn out until the K-file could be seen and were prepared and measured its distance to AF in a scanning electron microscope. Appropriate WL was when the tip of the K-file was located between 0 to -0.5 mm from AF. Results: Root ZX II showed significant difference (p<0.01) with the other two EALs. Root ZX II presented the better performance than Raypex 6 or Endo-Eze Quill in teeth with AAP.

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Influence of Blood on the Accuracy of Raypex 5 and Root ZX Electronic Foramen Locators: An In Vivo Study

Cited by 4 publications

References 24 publications

The influence of two forms of chlorhexidine on the accuracy of contemporary electronic apex locators

The influence of two forms of chlorhexidine on the accuracy of contemporary electronic apex locators

Accuracy of Root ZXII, E-PEX and FIND apex locators in teeth with vital pulp: an in vivo study

Analysis of Electronic Apex Locators in Human Teeth Diagnosed With Apical Periodontitis

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