Accuracy of two apex locators in calculating working length in molar primary teeth: An ex vivo study

2018 ◽  
Vol 64 (2) ◽  
pp. 1507-1512
Author(s):  
Bassem Eid ◽  
Ahmed Wally
Keyword(s):  
Primary Teeth ◽  
Ex Vivo ◽  
Working Length ◽  
Ex Vivo Study

scholarly journals Root Canal Penetration of a Sodium Hypochlorite Mixture Using Sonic or Ultrasonic Activation

2014 ◽  
Vol 25 (6) ◽  
pp. 489-493 ◽  
Author(s):  
Marta Sáinz-Pardo ◽  
Roberto Estevez ◽  
Óliver Valencia de Pablo ◽  
Giampiero Rossi-Fedele ◽  
Rafael Cisneros
Keyword(s):  
Sodium Hypochlorite ◽  
Root Canal ◽  
Ex Vivo ◽  
Positive Pressure ◽  
Ultrasonic Activation ◽  
Penetration Length ◽  
Working Length ◽  
Closed Systems ◽  
Canal Shaping ◽  
Ex Vivo Study

The purpose of this ex vivo study was to determine, in "open" and "closed" systems, whether the design has an influence on the penetration length of sodium hypochlorite mixed with a radiopaque contrast medium, measured in millimeters, when delivered using positive pressure (PP) and using sonic (SI) or passive ultrasonic (PUI) activation. Sixty single-rooted teeth were divided into two groups: open and closed systems (n=30). Root canal shaping was performed to a working length of 17 mm. The samples were divided into three sub-groups (n=10) according to irrigant delivery and activation: PP, and SI or PUI activation. By using radiographs, penetration length was measured, and vapor lock was assessed. For the closed group, the penetration distance means were: PP 15.715 (±0.898) mm, SI 16.299 (±0.738) mm and PUI 16.813 (±0.465) mm, with vapor lock occurring in 53.3% of the specimens. In the open group, penetration to 17 mm occurred in 97.6% of the samples, and no vapor lock occurred. Irrigant penetration and distribution evaluation using open and closed systems provide significantly different results. For closed systems, PUI is the most effective in delivering the irrigant to working length, followed by SI.

Accuracy of electronic apical functions of a new integrated motor compared to the visual control of the working length—an ex vivo study

2020 ◽  
Vol 25 (1) ◽  
pp. 231-236
Author(s):  
Adriane Antoniw Klemz ◽  
Alessandra Timponi Goes Cruz ◽  
Lucila Piasecki ◽  
Everdan Carneiro ◽  
Vânia Portela Ditzel Westphalen ◽  
...  
Keyword(s):  
Ex Vivo ◽  
Visual Control ◽  
Working Length ◽  
Ex Vivo Study

Electronic determination of root canal working length in primary molar teeth: an in vivo and ex vivo study

2011 ◽  
Vol 44 (5) ◽  
pp. 402-406 ◽  
Author(s):  
A. P. C. A. Beltrame ◽  
T. C. Triches ◽  
N. Sartori ◽  
M. Bolan
Keyword(s):  
Root Canal ◽  
Ex Vivo ◽  
Primary Molar ◽  
Working Length ◽  
Molar Teeth ◽  
Ex Vivo Study

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 Comparison of Four Electronic Apex Locators in Detecting Working Length: An Ex Vivo Study

2018 ◽  
Vol 19 (12) ◽  
pp. 1427-1433 ◽  
Author(s):  
Mehmet Yolagiden ◽  
Seyda Ersahan ◽  
Gokhan Suyun ◽  
Erturk Bilgec ◽  
Cumhur Aydin
Keyword(s):  
Ex Vivo ◽  
Working Length ◽  
Ex Vivo Study

Antimicrobial Efficacy of Triphala as Root Canal Irrigating Solution in Infected Primary Teeth: An Ex Vivo Study

2020 ◽  
Vol 11 (1) ◽  
pp. 104
Author(s):  
N. K. Kiran ◽  
Nagalakshmi Chowdhary ◽  
Y. Sharada Devi Mannur ◽  
Neethu Elsa Varghese ◽  
Arvind Sridhara ◽  
...  
Keyword(s):  
Root Canal ◽  
Primary Teeth ◽  
Ex Vivo ◽  
Antimicrobial Efficacy ◽  
Ex Vivo Study

scholarly journals Apical debris extrusion during instrumentation of oval root canals in primary teeth using manual versus motorized files: an ex vivo study

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Bhaggyashri A. Pawar ◽  
Ajinkya M. Pawar ◽  
Jatin Atram ◽  
Alexander Maniangat Luke ◽  
Anuj Bhardwaj ◽  
...  
Keyword(s):  
Primary Teeth ◽  
Ex Vivo ◽  
Treatment Needs ◽  
Significance Level ◽  
Root Canals ◽  
Apical Extrusion ◽  
Significant Difference ◽  
Time Required ◽  
Post Hoc ◽  
Ex Vivo Study

AbstractThis study aimed to assess the apical extrusion of debris during instrumentation of primary canines using three endodontic file types. Forty-five extracted primary canines were randomly assigned to three instrumentation groups (n = 15): Hand K-files; and the motorized Kedo-S files and XP-endo Shaper files. The apically extruded debris produced during the procedure was collected and dried in pre-weighed Eppendorf tubes, and the mass of debris was calculated. The time required for the endodontic procedure was also recorded. Analysis of variance (ANOVA) and Tukey’s post hoc test were used with a significance level set at 5%. XP-endo Shaper and Kedo-S files extruded significantly less debris compared with hand K-files with means of 0.84 ± 0.31 and 1.20 ± 0.67 mg respectively, compared to 2.13 ± 0.31 mg (p < 0.0001). No significant difference was found between the two motorized files. Less time was required to complete the procedure with the XP-endo Shaper compared to the hand K-files (p < 0.0001) and Kedo-S files (p < 0.0001). Within the limitations of the present study, it may be concluded that motorized files extruded less debris and required less instrumentation time compared to traditional K-files, which could benefit paediatric patients with root canal treatment needs.

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