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

2016 ◽  
Vol 27 (3) ◽  
pp. 336-339 ◽  
Author(s):  
Masoud Saatchi ◽  
Mohammad Ghasem Aminozarbian ◽  
Hamid Noormohammadi ◽  
Badri Baghaei
Keyword(s):  
Root Canal ◽  
In Vivo Study ◽  
Actual Working ◽  
Working Length ◽  
Finger Prick ◽  
Mcnemar’S Test ◽  
Accuracy Rates ◽  
Mcnemar's Test

Abstract 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.

scholarly journals Can active signals of cellphone interfere with electronic working length determination of a root canal in a dental clinic? An in vivo study

2017 ◽  
Vol 20 (3) ◽  
pp. 170
Author(s):  
UmadeviKiritsinh Gohil ◽  
VaishaliV Parekh ◽  
Niraj Kinariwala ◽  
KaushalM Oza ◽  
MonaC Somani
Keyword(s):  
Root Canal ◽  
In Vivo Study ◽  
Dental Clinic ◽  
Working Length ◽  
Length Determination

scholarly journals Clinical Accuracy of Electronic Apex Locator in Measuring Working Length during Root Canal Treatment

2018 ◽  
Vol 43 (3) ◽  
pp. 120-125
Author(s):  
AKM Bashar ◽  
Tanzila Rafique ◽  
Ranjit Ghosh ◽  
Kamal Abdullah ◽  
Mohmood Sajedeen ◽  
...  
Keyword(s):  
Root Canal ◽  
Ex Vivo ◽  
Pearson Correlation ◽  
Root Canal Treatment ◽  
Acceptable Range ◽  
Actual Working ◽  
Working Length ◽  
Clinical Accuracy ◽  
Electronic Apex Locator

Obtaining a correct working length is critical to success of endodontic therapy. The procedure for establishment of working length should be performed using techniques that have been proven to give valuable and accurate results and methods that are practical and efficacious. The development of the electronic apex locator has helped to assess the working length more accurate and predictable. So the objective of this in vivo-ex vivo study was to evaluate the clinical accuracy of electronic apex locator in measuring the working length of the root canal in vivo, and comparing the lengths so measured, to the actual working length, ex vivo and after extraction. Electronic apex locator C-Root-I VI (Foshan COXO Medical Instrument Co. China) was used to measure the working length in 100 root canals (one palatal canal and one buccal canal in fifty maxillary 1st premolar) in vivo before extraction, that were scheduled for orthodontic treatment in twenty-five patients. Teeth were then extracted and apical constrictions were identified by careful preparation of the apical 4 mm of all the roots. Actual working lengths were determined by adjusting an endodontic file in the root canal upto the constriction from the coronal reference point. Electronic working lengths obtained in vivo were then compared for coincidence with the actual lengths thus measured after extraction (ex vivo). The data were statistically analysed by a paired Student 't' test and Pearson correlation-coefficient test. In 14 canals out of 100 electronic working lengths (EWL) truly coincided with actual working length (AWL). Eighty two canals out of 100, EWLs were <0.5 mm short in measurement than AWLs but the difference with AWL was statistically insignificant (p >0.01). Only in 4 canals (4%) EWLs were either >0.5mm short or more than AWL, thereby fail to meet the criteria of acceptable range of coincidence (⩽0.5 mm from the apical constriction). On reliability analysis, all (100%) electronic working length significantly correlate with the actual working length (r=0.971). Within a clinically acceptable range of ⩽0.5 mm, C Root I apex locator device showed a high degree of success (96%) in determination of working length during root canal treatment.

scholarly journals Comparative evaluation of root ZX Mini® apex locator and radiovisiography in determining the working length of primary molars: An In Vivo study

2021 ◽  
Vol 11 (2) ◽  
pp. 257-262
Author(s):  
Rucha N. Davalbhakta ◽  
Niraj S. Gokhale ◽  
Shivayogi M. Hugar ◽  
Chandrashekhar M. Badakar ◽  
A. Gowtham ◽  
...  
Keyword(s):  
Comparative Evaluation ◽  
In Vivo Study ◽  
Primary Molars ◽  
Working Length

Histological Changes Induced by CO2 Laser Microprobe Specially Designed for Root Canal Sterilization: In Vivo Study

1998 ◽  
Vol 16 (5) ◽  
pp. 263-267 ◽  
Author(s):  
GAVRIEL KESLER ◽  
RUMELIA KOREN ◽  
ANAT KESLER ◽  
NISSIM HAY ◽  
RIVKA GAL
Keyword(s):  
Co2 Laser ◽  
Root Canal ◽  
In Vivo Study ◽  
Histological Changes ◽  
Laser Microprobe

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

An In Vivo Evaluation of Two Types of Files used to Accurately Determine the Diameter of the Apical Constriction of a Root Canal: An In Vivo Study

2009 ◽  
Vol 10 (4) ◽  
pp. 43-50 ◽  
Author(s):  
Narendra Manwar ◽  
Sumeet Darda ◽  
D.D. Shori
Keyword(s):  
Root Canal ◽  
Univariate Analysis ◽  
File Size ◽  
In Vivo Evaluation ◽  
Apical Constriction ◽  
Iso Standard ◽  
Mean Values ◽  
Canal Diameter ◽  
Working Length

Abstract Aim The aim of this study was to compare sizes of the first instrument with or without a taper that binds at the apical constriction of a root canal after coronal flaring. Methods and Materials A total of 310 canals were evaluated in patients presenting for root canal therapy. Canals with intact apices were selected. After gaining straight line endodontic access, the coronal third was flared using Gates-Glidden drills. Working length was determined using an apex locator. ISO Standard K-files (tapered) were passively introduced into the canals starting with a No. 15 file. The first K-file size to bind against the canal walls without pushing and to reach the working length was recorded as the FKFB (First K File to Bind). Next, ISO Standard Lightspeed files (non-tapered instruments) starting with No. 20 were then gently introduced by hand to each canal in ascending order to the working length. The first size of a Lightspeed instrument to bind against the canal walls and reach the working length was recorded as FLSB (First Light Speed to Bind). In all instances a larger file was introduced to ensure it could not reach the same depth (i.e., working length). Statistical analysis was carried out using a univariate analysis of variance (ANOVA). Results The average size of the FLSB to bind against the canal walls first at the working length was approximately two ISO sizes larger than the FKFB (P<0.001). Conclusion The clinician should consider introducing a non-tapered instrument to working length after coronal flaring because determination of the initial narrow apical canal diameter plays a major factor in identifying the extent of final apical shaping. Because the first non-tapered instrument that binds the apical constriction is larger than the corresponding tapered instrument, it better reflects the actual narrow apical diameter of the canal. Clinical Significance The initiation of canal instrumentation with a K-file size three sizes beyond the mean values of the FLSB will result in greater final enlargement of the canal compared to starting with the FKFB. This increased canal enlargement facilitates improved mechanical and chemical cleansing of the root canal ensuring removal of more microorganisms and their substrates, thus, improving the outcome of the treatment. Citation Darda S, Manwar N, Chandak M, Shori DD. An In Vivo Evaluation of Two Types of Files used to Accurately Determine the Diameter of the Apical Constriction of a Root Canal: An In Vivo Study. J Contemp Dent Pract 2009 July; (10)4:043-050.

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