In Vitro Evaluation of the Ability of Three Apex Locators to Determine the Working Length During Retreatment

Goldberg, Fernando; Marroquín, Benjamin Briseño; Frajlich, Santiago; Dreyer, C. J.

doi:10.1097/01.don.0000155226.03483.ff

Cited by 55 publications

(55 citation statements)

References 20 publications

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“…19,21,26,27 The present in vivo study adds to the existing body of knowledge by reporting data regarding accuracy obtained under authentic clinical conditions. All measurements were conducted by the same experienced and trained operator, thus eliminating the possibility of operator bias.…”

Section: Discussionmentioning

confidence: 87%

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Influence of pulp condition on the accuracy of an electronic foramen locator in posterior teeth: an in vivo study

Renner¹,

Grazziotin‐Soares²,

Gavini³

et al. 2012

Braz. oral res.

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Influence of pulp condition on the accuracy of an electronic foramen locator in posterior teeth: an in vivo study Abstract: The aim of this study was to assess, in vivo, the accuracy of the NovApex  electronic foramen locator in determining working length (WL) in vital and necrotic posterior teeth. The NovApex  was used in 144 canals: 35 teeth with vital pulps (68 canals) and 42 teeth with necrotic pulps (76 canals). WL was measured with the NovApex  locator and confirmed using the radiographic method. Differences between electronic and radiographic measurements ranging between 0.0 and 0.4 millimeters were classified as acceptable; differences equal to or greater than 0.5 millimeter were considered unacceptable. Pearson's chi-square test was used to assess the influence of pulp condition on the accuracy of NovApex  (α = 0.05). Regardless of pulp condition, differences between electronic and radiographic WL measurements were acceptable in 73.61% of the canals. No statistically significant differences in accuracy were observed when comparing vital and necrotic canals (p > 0.05). There were 38 unacceptable measurements. In none of these cases was the file tip located beyond the radiographic apex; in 32, it was located short of the NovApex  measurement. Pulp condition had no significant effect on the accuracy of NovApex  .

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Section: Discussionmentioning

confidence: 87%

“…Although some in vitro 19,21,26,27 and in vivo 11 studies are available, neither has focused on the possible influence of pulp condition on the accuracy of this EFL. The null hypothesis of our study was that the NovApex  would be accurate in both vital and necrotic teeth.…”

Section: Introductionmentioning

confidence: 99%

Influence of pulp condition on the accuracy of an electronic foramen locator in posterior teeth: an in vivo study

Renner¹,

Grazziotin‐Soares²,

Gavini³

et al. 2012

Braz. oral res.

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“…Different ex vivo experimental protocols have been used to examine the accuracy of EALs. In several studies the apical portion of the root was not shaved, and the actual canal length was measured with a caliper and compared with the electronic reading (30,(32)(33)(34)(35)(36)(37)(38)(39)(40)(41)(42). The position of apical constriction and its relationship with the CDJ are highly irregular (28,29,36,43).…”

Section: Discussionmentioning

confidence: 99%

Accuracy of Three Electronic Apex Locators in Anterior and Posterior Teeth: An Ex Vivo Study

Mancini

Felici

Conte

et al. 2011

Journal of Endodontics

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Introduction: The aim of this study was to determine in anterior teeth, bicuspids, and molars (1) the accuracy of 3 different electronic apex locators (EALs) in detecting the apical foramen and (2) the accuracy of digital radiography in determining the working length (WL), compared with visible control under a microscope. Methods: By using radiovideography (RVG), we measured the lengths of 120 root canals with 3 different EALs (Endex, ProPex II, and Root ZX) and compared them with the actual lengths. The accuracy of EALs and RVG was related to each dental category. An endodontic training kit (Pro-Train) was used during experimental procedures. Results: Statistical analysis showed that the 3 EALs and RVG were less accurate in anterior teeth and molars than in bicuspids. The paired-sample t test showed no statistically significant difference between mesiodistal plane and buccolingual plane digital radiography in all groups. Conclusions: The 3 EALs tested were more accurate in detecting the apical foramen in bicuspids than in both molars and anterior teeth. Radiographic measurements were not reliable for determining WL in all dental groups in both radiographic planes. (J Endod 2011;37:684-687)

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“…As a result, different ranges have been used in the evaluation of EAL accuracy. Diverse studies have usually considered the electronic measurements for the minor constriction to be between the 0.5-mm mark (16, 20, 21, 28-30, 32, 33, 35, 36), which is considered highly accurate (37), and the 1-mm mark (24,36,(38)(39)(40). One reason cited for accepting a 1.0-mm margin of error is the wide range seen in the shape of the apical third (21,41).…”

Section: Discussionmentioning

confidence: 99%

Accuracy of Three Electronic Apex Locators Compared with Digital Radiography: An Ex Vivo Study

Cianconi

Angotti

Felici

et al. 2010

Journal of Endodontics

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In Vitro Evaluation of the Ability of Three Apex Locators to Determine the Working Length During Retreatment

Cited by 55 publications

References 20 publications

Influence of pulp condition on the accuracy of an electronic foramen locator in posterior teeth: an in vivo study

Influence of pulp condition on the accuracy of an electronic foramen locator in posterior teeth: an in vivo study

Accuracy of Three Electronic Apex Locators in Anterior and Posterior Teeth: An Ex Vivo Study

Accuracy of Three Electronic Apex Locators Compared with Digital Radiography: An Ex Vivo Study

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