Influence of pulp vitality on length determination by using the elements diagnostic unit and apex locator

Akisue, Eduardo; Gavini, Giulio; Figueiredo, José Antônio Poli de

doi:10.1016/j.tripleo.2007.04.018

Cited by 32 publications

(31 citation statements)

References 18 publications

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“…endodontics, [4][5][6][7][8][9][10][11][12][13] has some advantages, e.g. the possibility to study root canal anatomy and to identify periapical lesions, as reported by ElAyouti et al 14 Conversely, one disadvantage of this method is related to the difficulties involved in locating the apical foramen and the apical constriction.…”

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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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: 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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“…In the present study, some precautions were taken to ensure measurement standardization and reliability, such as the selection of files according to canal size in order to improve the accuracy of EFL readings that had been previously described both in vitro [22,24] and in vivo [8,9].…”

Section: Discussionmentioning

confidence: 99%

“…Despite previous in vivo studies showing that Table 3. Comparison of means between the different stages of treatment/retreatment -EWL-1 (during treatment), EWL-2 (after filling removal), and EWL-3 (after reinstrumentation), only from accurate measurements, for both tolerance ranges the pulp condition does not affect the accuracy of EWL readings during clinical practice [8,9], it is important to bear in mind that, as supported by the present findings, the proper performance of any EFL requires the removal of all contents from inside the root canal.…”

Section: Discussionmentioning

confidence: 99%

“…Different brands of EFLs are commercially available and have been studied aiming to improve working length determination [8][9][10]. One of the EFLs currently available is MiniApex ® (SybronEndo Corp. -Orange, USA), which operates based on a multifrequency measurement system (http://www.sybronendo.com) to calculate the distance from the file tip to the foramen by measuring changes in impedance between two electrodes [11].…”

Section: Introductionmentioning

confidence: 99%

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Precisão de um localizador foraminal eletrônico na determinação do comprimento de trabalho durante o retratamento: um estudo in vitro

Lassen

Dotto

Santos

et al. 2016

Rev. Odonto Ciênc. (Online)

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Objective: To assess, in vitro, the accuracy of MiniApex ® for electronic working length (EWL) determination during three stages of root canal treatment/retreatment: EWL-1 (during treatment), EWL-2 (after filling removal), and EWL-3 (after reinstrumentation). Methods: EWL was determined when the MiniApex ® display showed the green light at the '0.5' mark and compared with radiographic findings. Results were classified as accurate when the file tip was located in a range of (1) 0.5 to 1.0 mm and (2) 0.5 to 2.0 mm from the radiographic apex, and as inaccurate when the file tip was outside that range of values. Means were compared between groups, considering all values and only accurate measurements, for both tolerance limits. Results: MiniApex ® was highly accurate at the larger tolerance range (0.5-2.0mm): 82.3% (EWL-1), 88.2% (EWL-2), and 91.1% (EWL-3). During root canal retreatment, EWL-3 provided more accurate measurements than EWL-2, but without statistical difference (p>0.05). There was no statistical difference (p>0.05) when only accurate measurements were evaluated. Conclusion: MiniApex ® was highly accurate to determine the location of the instrument tip at 0.5 to 2.0mm from the radiographic apex during treatment and retreatment (EWL-2 and EWL-3).Key words: Odontometry; Retreatment; Dental pulp cavity; Endodontics Precisão de um localizador foraminal eletrônico na determinação do comprimento de trabalho durante o retratamento: um estudo in vitro Resumo Objetivo: Avaliar, in vitro, a precisão do localizador MiniApex ® na determinação do comprimento de trabalho eletrônico (CTE) em três estágios do tratamento/retratamento de canais: CTE-1 (durante o tratamento), CTE-2 (após a remoção da obturação) e CTE-3 (após o repreparo do canal radicular). Métodos: O CTE foi definido quando o display do MiniApex ® mostrou luz verde na marca de '0,5', e foi confirmado radiograficamente. Os resultados foram classificados como precisos quando a ponta do instrumento se localizava a (1) 0,5-1,0 mm ou a (2) 0,5-2,0 mm do ápice radiográfico, e como imprecisos quando a mensuração ficava fora desses valores. As médias foram comparadas entre os grupos considerando todos os valores e apenas valores precisos, para ambos os limites de tolerância. Resultados: O MiniApex ® foi efetivo considerando-se o limite maior de tolerância (0,5-2,0mm): 82,3% (CTE-1), 88,2% (CTE-2) e 91,1% (CTE-3). Durante o retratamento, CTE-3 demonstrou mensurações mais precisas do que CTE-2, porém sem diferença estatística (p>0,05). Não foram observadas diferenças estatísticas (p>0,05) entre as mensurações precisas. Conclusão: O MiniApex ® foi confiável na determinação do comprimento de trabalho considerando as medidas compreendidas no intervalo de 0,5-2,00mm do ápice radiográfico durante o tratamento e retratamento de canal (CTE-2 e CTE-3).

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“…Because the pulp vitality does not affect the accuracy of EFLs (18), teeth with necrotic (29 teeth) and vital pulp (11 teeth) were included in the study. Teeth with pulp calcification, open apices, prosthetic crowns, metal restorations, previous endodontic treatment and history of any trauma were not included.…”

Section: Methodsmentioning

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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Influence of pulp vitality on length determination by using the elements diagnostic unit and apex locator

Cited by 32 publications

References 18 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

Precisão de um localizador foraminal eletrônico na determinação do comprimento de trabalho durante o retratamento: um estudo in vitro

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

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