In Vivo Accuracy of Two Electronic Foramen Locators Based on Different Operation Systems

Vasconcelos, Bruno Carvalho de; Araújo, Rebeca Bastos Rocha de; Silva, Francisco Cláudio Fernandes Alves e; Luna-Cruz, Suyane Maria; Duarte, Marco Antônio Húngaro; Fernandes, Carlos Alexandre Rolim

doi:10.1590/0103-6440201302069

Cited by 12 publications

(13 citation statements)

References 24 publications

(82 reference statements)

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“…They were created based on the same functioning method of the Root ZX, however, this time with the possibility of attaching the EFL to a motor for mechanical instrumentation (Root ZX II) and with the advantage of being a miniaturized version (Root ZX Mini) [9, 10]. Currently, the precision and reproducibility of the measurements made by these three models of Root ZX were not compared in a single study.…”

Section: Introductionmentioning

confidence: 99%

Root ZX Electronic Foramen Locator: An Ex Vivo Study of Its Three Models’ Precision and Reproducibility

Aguiar

Reinaldo

Frota

et al. 2017

International Journal of Dentistry

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Although Root ZX is considered the gold standard electronic foramen locator (EFL), two variations of this device were launched, however without different operating mechanisms. This investigation aims to evaluate the precision of Root ZX (RZX), Root ZX II (RII), and Root ZX Mini (RM) EFLs. After access cavity preparation, 32 mandibular single rooted human premolars had their real length measured with the aid of a #15 K-type manual file under magnification (25x). Electronic measurements were performed by the devices in an alternate order until the apical foramen was reached (0.0). Each measurement was performed with adjusted file to the real length of the teeth and verified with a digital caliper. The accuracy of the EFLs was 68.8% (RZX), 65.8% (RII), and 68.8% (RM), considering ±0.5 mm as a margin of tolerance. The mean errors of the devices were 0.37 ± 0.25 mm (RZX), 0.41 ± 0.34 mm (RII), and 0.32 ± 0.28 mm (RM). ANOVA and Tukey test were applied to analyze the obtained data, which showed that there were no statistically significant differences among the locators (P > .05). It can be concluded that the three tested devices demonstrated precise measurements of the real length of the canal without performance differences among them.

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Section: Introductionmentioning

confidence: 99%

Root ZX Electronic Foramen Locator: An Ex Vivo Study of Its Three Models’ Precision and Reproducibility

Aguiar

Reinaldo

Frota

et al. 2017

International Journal of Dentistry

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“…The aim of this study was to compare the capacity of three EALs to determine the position of the K file tip between 0.0 to -0.5 mm from the AF in teeth with AP, because there is limited clinical evidence of its use in those teeth (10,12). Regarding the results obtained, and with the criteria established, Root ZX showed an accuracy percentage of 53.3%, Endo-Eze Quill of 46.6%, while Raypex 6 of 37.5%, which are values lower than those observed in other studies (10)(11)(12)(13)(14)(15)(16)(17).…”

Section: Discussionmentioning

confidence: 63%

“…In other conditions, EAL's have acceptable reliability to determine WL (10)(11)(12)(13)(14)(15)(16)(17), including controlling the working length during the rotary instrumentation (23). Parente et al (23) evaluated ex vivo the efficacy of Root ZX and Propex II to control the root canal WL during rotary instrumentation.…”

Section: Discussionmentioning

confidence: 99%

“…Modern electronic apex locators can determine working length with accuracies of greater than 90%. Root ZX II is a device with high precision and it is considered as the gold standard in electronic working length (4,11). However, there is limited evidence on the clinical use of the mentioned EAL´s to establish WL in teeth with AP (10,12), especially with Raypex 6 and EndoEze-Quill.…”

Section: Introductionmentioning

confidence: 99%

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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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“…The effects of some factors on the accuracy of EFLs (9)(10)(11)(12) and comparisons between the accuracy of EFLs have been investigated (13,14). The presence of blood within the root canal as an electrolyte material may also influence the accuracy of EFLs.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2016

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The aim of this study was to evaluate in vivo the accuracy of the Raypex 5 and Root ZX electronic foramen locators (EFLs) in the presence of blood in the root canal space. Forty single-canal teeth scheduled for extraction were selected. Access cavity was prepared and coronal enlargement was carried out. Approximately two drops of blood were collected by finger prick and injected into the root canal space. The electronic working length (EWL) of each tooth by each device was established twice before (NB group) and after (WB group) injecting blood into the root canal. The tooth was extracted and the actual working length (AWL) was determined. Data were analyzed using McNemar's test. The accuracy rates of Raypex 5 and Root ZX within 0.5 mm in the NB group were 88.9% and 91.5%, with 83.3% and 86.2% in the WB group, respectively. There were no significant differences between the accuracy of each EFL in the two groups (p>0.05). Considering the NB and WB groups, there were no statistically significant differences in the accuracy of the EFLs (p>0.05). The presence of blood in the root canal space did not influence the accuracy of the EFLs.

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In Vivo Accuracy of Two Electronic Foramen Locators Based on Different Operation Systems

Cited by 12 publications

References 24 publications

Root ZX Electronic Foramen Locator: An Ex Vivo Study of Its Three Models’ Precision and Reproducibility

Root ZX Electronic Foramen Locator: An Ex Vivo Study of Its Three Models’ Precision and Reproducibility

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

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

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