scholarly journals Clinical Efficacy of Three Different Electronic Apex Locators in Comparison with Radiographic Working Length Determination

2015 ◽  
pp. 1-6
Author(s):  
Ayca Yilmaz ◽  
◽  
Selçuk Gokyay ◽  
Başak Gokyay ◽  
İlda Birdal ◽  
...  
Keyword(s):  
Clinical Efficacy ◽  
Working Length ◽  
Length Determination

scholarly journals Root canal curvature as a prognostic factor influencing the diagnostic accuracy of radiographic working length determination and postoperative canal axis modification: an in vitro comparative study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Bestoon Mohammed Faraj
Keyword(s):  
Root Canal ◽  
Radiographic Images ◽  
The Real ◽  
Root Canals ◽  
Length Estimation ◽  
Working Length ◽  
Length Determination ◽  
Case Difficulty Assessment ◽  
The Impact

Abstract Background Radiographic analysis of tooth morphology is mandatory for accurate calibration of the degree of canal curvature angle and radiographic working length to its real dimensions in case difficulty assessment protocols. This study aimed to determine the impact of the degree of root canal curvature angle on maintaining the real working length and the original canal axis of prepared root canals using a reciprocating rotary instrumentation technique. Methods Radiographic image analysis was performed on 60 extracted single-rooted human premolar teeth with a moderate canal curvature (10°–25°) and severe canal curvature (26°–70°). Working length and longitudinal canal axis were determined using cone-beam computed tomography (CBCT) and digital periapical radiography. The real canal length was determined by subtracting 0.5 mm from the actual canal length. Root canals were prepared using the WaveOne Gold reciprocating file (Dentsply Maillefer, Ballaigues, Switzerland). Results There was no significant relation of the degree of canal curvature angle to the accuracy of radiographic working length estimated on CBCT and digital periapical radiographic techniques (P > 0.05). Postinstrumentation changes in the original canal axis between moderate and severe canal curvature angles, assessed on CBCT and periapical digital radiographic images were statistically non-significant (P > 0.05). Conclusions A standardized digital periapical radiographic method performed similarly to the CBCT technique near to its true working length. No significant interaction exists between the diagnostic working length estimation, postoperative root canal axis modification, and the degree of canal curvature angle, using reciprocating rotary instrumentation technique.

Electronic working length determination in primary teeth by Propex and Digital Signal Processing

2010 ◽  
Vol 36 (3) ◽  
pp. 105-108 ◽  
Author(s):  
Paulo Nelson-Filho ◽  
Marcela Pacífico Lucisano ◽  
Mário Roberto Leonardo ◽  
Raquel Assed Bezerra Da Silva ◽  
Léa Assed Bezerra Da Silva
Keyword(s):  
Signal Processing ◽  
Digital Signal Processing ◽  
Primary Teeth ◽  
Digital Signal ◽  
Working Length ◽  
Length Determination

scholarly journals An in vivo Evaluation of Different Methods of Working Length Determination

2013 ◽  
Vol 14 (4) ◽  
pp. 644-648 ◽  
Author(s):  
Nitin Shah ◽  
Sarita Singh ◽  
Jyoti Mandlik ◽  
Kalpana Pawar ◽  
Paras Gupta ◽  
...  
Keyword(s):  
Tactile Sensation ◽  
Pulp Chamber ◽  
In Vivo Evaluation ◽  
Extraction Working ◽  
Apical Constriction ◽  
Working Length ◽  
Length Measurements ◽  
Length Determination ◽  
Electronic Apex Locator

ABSTRACT Objective The purpose of this in vivo study was to compare the ability of digital tactile, digital radiographic and electronic methods to determine reliability in locating the apical constriction. Materials and methods Informed consent was obtained from patients scheduled for orthodontic extraction. The teeth were anesthetized, isolated and accessed. The canals were negotiated, pulp chamber and canals were irrigated and pulp was extirpated. The working length was then evaluated for each canal by digital tactile sensation, an electronic apex locator (The Root ZX) and digital radiography. The readings were then compared with post-extraction working length measurements. Results The percentage accuracy indicated that EAL method (Root ZX) shows maximum accuracy, i.e. 99.85% and digital tactile and digital radiographic method (DDR) showed 98.20 and 97.90% accuracy respectively. Clinical significance Hence, it can be concluded that the EAL method (Root ZX) produced most reliable results for determining the accurate working length. How to cite this article Mandlik J, Shah N, Pawar K, Gupta P, Singh S, Shaik SA. An in vivo Evaluation of Different Methods of Working Length Determination. J Contemp Dent Pract 2013;14(4):644-648.

Working Length Determination

2014 ◽  
pp. 235-235
Author(s):  
Nisha Garg ◽  
Amit Garg
Keyword(s):  
Working Length ◽  
Length Determination

scholarly journals Correlation of objective image quality and working length measurements in different CBCT machines: An ex vivo study

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
T. G. Wolf ◽  
F. Fischer ◽  
R. K. W. Schulze
Keyword(s):  
Image Quality ◽  
Ex Vivo ◽  
Quality Factors ◽  
Study Objective ◽  
Intra Class Correlation ◽  
Working Length ◽  
Length Determination ◽  
Image Quality Measures ◽  
Operator Reproducibility ◽  
Ex Vivo Study

Abstract To investigate potential correlations between objective CBCT image parameters and accuracy in endodontic working length determination ex vivo. Contrast-to-noise ratio (CNR) and spatial resolution (SR) as fundamental objective image parameters were examined using specific phantoms in seven different CBCT machines. Seven experienced observers were instructed and calibrated. The order of the CBCTs was randomized for each observer and observation. To assess intra-operator reproducibility, the procedure was repeated within six weeks with a randomized order of CBCT images. Multivariate analysis (MANOVA) did not reveal any influence of the combined image quality factors CNR and SR on measurement accuracy. Inter-operator reproducibility as assessed between the two observations was poor, with a mean intra-class correlation (ICC) of 0.48 (95%-CI  0.38, 0.59) for observation No. 1. and 0.40 (95%-CI 0.30, 0.51) for observation No. 2. Intra-operator reproducibility pooled over all observers between both observations was only moderate, with a mean ICC of 0.58 (95%-CI 0.52 to 0.64). Within the limitations of the study, objective image quality measures and exposure parameters seem not to have a significant influence on accuracy in determining endodontic root canal lengths in CBCT scans. The main factor of variance is the observer.

scholarly journals A Comparative Evaluation of Effects of Conventional and Herbal Irrigants on Working Length Determination by Third Generation Apex Locator–An In Vitro Study

2020 ◽  
Vol 8 (02) ◽  
pp. 44-48
Author(s):  
Niharika Patalbansi ◽  
Yogesh Kumar ◽  
Neetu Jindal ◽  
Renu Aggarwal ◽  
Shefali Goyal
Keyword(s):  
Green Tea ◽  
Aloe Vera ◽  
In Vitro Study ◽  
Length Estimation ◽  
Working Length ◽  
Dry Conditions ◽  
Recorded Data ◽  
Length Determination ◽  
The Difference

Abstract Introduction The establishment of accurate working length is one of the most critical steps in endodontic therapy from the biomechanical and obturation points of view. Traditionally, the use of radiography and tactile sense methods were used for working length estimation, but recently, the use of electronic apex locator (EAL) has come into existence. The aim was to evaluate the effect of conventional and herbal irrigants on working length determination by Root ZX. Materials and Methods A total of 110 extracted single rooted teeth were taken. Standard access cavities were prepared and samples were randomly divided into 11 groups (n = 10) according to the type of irrigating solutions used. The actual root canal length was measured, and the readings in dry conditions and wet conditions were recorded. The point where Root ZX showed beep was recorded and difference was recorded as well. The recorded data was calculated and statistically analyzed using unpaired t-test. Result In dry conditions, only saline, H2O2, Aloe vera, and green tea gave exact working length using apex locator values. Whereas in wet conditions, only Aloe vera and green tea gave exact working length. Conclusion Although the irrigants and dry conditions influenced the results, Root ZX can be considered to be accurate, and the difference was within the clinically acceptable range and not statistically significant.

scholarly journals Comparative Evaluation of Electronic Apex Locators and Radiovisiography for Working Length Determination in Primary Teeth in vivo

2016 ◽  
Vol 9 (2) ◽  
pp. 118-123 ◽  
Author(s):  
Shobha Tandon ◽  
Ahsan Abdullah ◽  
Neerja Singh ◽  
Monika S Rathore ◽  
Balakrishnan Rajkumar
Keyword(s):  
Comparative Evaluation ◽  
Primary Teeth ◽  
Working Length ◽  
Length Determination
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