An in vitro comparison of two modern apex locators

Weiger, Roland; John, Christoph; Geigle, Heiner; Löst, C

doi:10.1016/s0099-2399(99)80128-9

Cited by 57 publications

(52 citation statements)

References 13 publications

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“…These studies differ in establishing the reference point from which measurement accuracy is determined. Some authors measured from the minor diameter (apical constriction) (21,22,(27)(28)(29)(30)(31)(32)(33), whereas others measured from the major diameter or apical foramen (16,23,34). EALs have traditionally afforded some latitude of acceptable error in locating the apex (21,25,26,30).…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, Endex must be calibrated for each canal. Many studies (16)(17)(18) have shown precision measurements AE0.5 mm from the WL in 59%, 100%, and 68% of the specimens treated. Advances in technology have led to the development of EALs such as the Root ZX (J. Morita Co, Tustin, CA) that determine the minor diameter position using the ''ratio method,'' which allows for the simultaneous measurement of impedance at two frequencies; a quotient of impedance is then calculated and expressed as a position of the file in the canal.…”

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confidence: 99%

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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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Section: Discussionmentioning

confidence: 99%

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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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“…The use of electronic apex locators (EALs) to determine working length has gained increasing popularity in recent years because of their high accuracy rates (1)(2)(3)(4)(5). EALs were frequently used with a small size 15 stainless-steel endodontic hand file and numerous apex locator studies have used this file for testing purposes.…”

Section: Introductionmentioning

confidence: 99%

The accuracy of the Raypex5 electronic apex locator using stainless-steel hand K-file versus nickel-titanium rotary Mtwo file

Sadeghi¹,

Abolghasemi²

2010

Med Oral

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Objectives: Today many clinicians use both stainless-steel hand K-files and nickel-titanium rotary files during endodontic treatment. It is of great importance for the clinician to have confidence in the accuracy of an apex locator even if these files were used interchangeably. The purpose of this in-vitro study was to evaluate the accuracy of the Raypex5 electronic apex locator using stainless-steel hand K-file versus nickel-titanium rotary Mtwo file. Study design: Twenty straight and single canals of maxillary central teeth were used. Access cavities were prepared; actual working length were determined and compared with electronic working length obtained by means of apex locator Raypex5 using stainless-steel hand K-file and nickel-titanium rotary Mtwo file. Data was analyzed by paired T-test. Results: There was no significant difference between 15/0.02 stainless-steel hand K-file and 10/0.04 NiTi rotary Mtwo file for the mean differences between actual and electronic working length (p=0.126). Conclusions: Under the conditions of this in-vitro study, Raypex5 registered more measurements in acceptable range using 15/0.02 stainless-steel hand K-file and 10/0.04 NiTi rotary Mtwo file. It is possible to use them interchangeably without compromising the working length.

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“…15 Jenkins y colaboradores realizaron un estudio para probar la eficacia del localizador Root ZX en presencia de una gran variedad de irrigantes, comúnmente utilizados, durante el tratamiento de endodoncia; los resultados mostraron un 81% de eficacia en ausencia de hipoclorito de sodio, un 83% en presencia de un hipoclorito de sodio al 2.25% y un 85% con un hipoclorito de sodio al 5.25%. 8 Sin embargo, estas sustancias han sido probadas de manera individual dentro del conducto, y es importante tener en cuenta que durante la limpieza y la conformación, se hace necesaria la combinación de una solución irrigante con un agente quelante para eliminar la capa de barrillo dentinal, exponer los túbulos dentinales y de esta manera facilitar la remoción de detritus, bacterias y endotoxinas que se encuentran presentes dentro del sistema radicular de conductos.…”

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“…8 Weiger y colaboradores reportaron una alta eficacia del localizador apical Root ZX en presencia del hipoclorito de sodio al 1%. 15 Otros autores como Cemal utilizaron hipoclorito de sodio al 0.5%, al 1%, al 2.65%, y al 5.25% dentro del sistema de conductos radicular y demostraron que la eficacia del Root ZX no se afecta al aplicar estas sustancias en diferentes concentraciones. 31 Después de una completa revisión de literatura, se observó que ningún estudio evaluaba la eficacia del localizador apical con la combinación de una sustancia irrigadora y un agente quelante, siendo éste un procedimiento de rutina durante la preparación de los conductos radiculares.…”

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Evaluación in Vitro De La Eficacia Del Localizador Apical Root Zx en Presencia De Hipoclorito De Sodio Combinado Con Rc-Prep O Edta Comparado Al Microscopio Electrónico De Barrido

Plata

Navas

2018

UstaSalud

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RESUMENObjetivo: Evaluar la eficacia del localizador Root ZX para determinar la Constricción Apical en presencia de hipoclorito de sodio al 5.25% Clorox ® combinado con Rc-prep. Premier ® y el hipoclorito de sodio al 5.25% Clorox ® combinado con EDTA al 10% Eufar ® en dientes uniradiculares. Materiales y métodos: Se realizó un estudio experimental in vitro con 12 dientes uniradiculares divididos aleatoriamente en tres grupos: Grupo 1 (n = 12) hipoclorito de Sodio al 5.25% Clorox ® ; Grupo 2 (n = 6) hipoclorito de Sodio al 5.25% Clorox ® combinado con Rc-prep. Premier ® ; Grupo 3 (n = 6) hipoclorito de Sodio al 5.25% Clorox ® combinado con EDTA al 10% Eufar ® . Se utilizó el Root ZX para localizar la Constricción Cemento Dentina Conducto (CDC). Posteriormente, las muestras fueron divididas longitudinalmente, cubiertas con oro y observadas en el Microscopio Electrónico de Barrido (SEM), para corroborar la eficacia del instrumento en la localización de la CDC. Resultados: Se encontraron diferencias estadísticamente significativas entre los dos instrumentos de medición (Root ZX y SEM) y para cada grupo de tratamiento. Con el hipoclorito de sodio y Rc -Prep, se obtuvo una medida más larga, en comparación con la obtenida con el SEM; una diferencia de 0.788 mm. Por el contrario, el grupo del hipoclorito de sodio al 5.25% con EDTA al 10% expresó una medida más corta con relación a la obtenida en el SEM, dando una diferencia estadísticamente significativa de -0.766 mm. Conclusiones: Se podría sugerir que el Root ZX es eficaz en la localización de la Constricción Apical con un nivel de tolerancia de +/-1 mm. [Gay MM, Varón ME, Serrano OG. Evaluación in vitro de la eficacia del localizador apical Root ZX en presencia de hipoclorito de sodio combinado con Rc Prep o EDTA comparado con el Microscopio Electrónico de Barrido. Ustasalud Odontología 2003; 2: 97 -106] PALABRAS CLAVE: Root ZX, constricción apical, hipoclorito de sodio.In vitro evaluation of the effectiveness of the apical locator Root ZX in presence of sodium hypochlorite combined with Rc -Prep or Edta compared with scanning electron microscope ABSTRACT Purpose: To assess the effectiveness of the Root Zx to determine the Cement -Dentin -Canal junction (CDC) in the presence of sodium hypochlorite 5,25% Clorox ® ; combined with Rc-prep. Premier ® and sodium hypochlorite 5.25% Clorox ® combined with EDTA 10% Eufar ® in uniradicular teeth. Material and methods: An experimental study in vitro with 12 uniradicular teeth was done. They wered divided in three groups: Grupo 1 (n = 12) sodium hypochlorite 5,25% Clorox ® ; Group 2 (n = 6) sodium hypochlorite 5.25%Clorox ® combined with Rc-Prep. Premier ® ; Group 3 (n = 6) sodium hypochlorite 5,25% Clorox ® combined with EDTA 10% Eufar ® . Root ZX was used to locate the CDC; the samples were divided longitudinally, covered with gold and observed at the SEM, to corroborate the effectiveness of the instrument in the location of the CDC.Results: The results demonstrate statistically significant differences between Root ZX and SEM...

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An in vitro comparison of two modern apex locators

Cited by 57 publications

References 13 publications

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

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

The accuracy of the Raypex5 electronic apex locator using stainless-steel hand K-file versus nickel-titanium rotary Mtwo file

Evaluación in Vitro De La Eficacia Del Localizador Apical Root Zx en Presencia De Hipoclorito De Sodio Combinado Con Rc-Prep O Edta Comparado Al Microscopio Electrónico De Barrido

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