Evaluation of Methods for Determining Working Length in Root Canal Treatment for Primary Molars: An In-Vivo Study

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.

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

Brazilian Dental Journal ◽

10.1590/0103-6440201600678 ◽

2016 ◽

Vol 27 (3) ◽

pp. 336-339 ◽

Cited By ~ 2

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.

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Comparative Evaluation of Postoperative Pain after Root Canal Treatment using Three Different Sealers, Viz., Tubli-Seal EWT, Apexit Plus, AH Plus: An In-Vivo Study

JOURNAL FOR CLINICAL AND DIAGNOSTIC RESEARCH ◽

10.7860/jcdr/2020/42767.13417 ◽

2020 ◽

Author(s):

Bhavna Gudlavalleti ◽

Avinash A Patil

Keyword(s):

Postoperative Pain ◽

Root Canal ◽

Comparative Evaluation ◽

Root Canal Treatment ◽

In Vivo Study ◽

Ah Plus

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Comparative evaluation of post-operative pain with different calcium hydroxide formulations when used as intracanal medicament in root canal treatment- In vivo study

IP Indian Journal of Conservative and Endodontics ◽

10.18231/j.ijce.2020.024 ◽

2020 ◽

Vol 5 (3) ◽

pp. 100-104

Author(s):

Divyangana Thakur ◽

◽

Sameer Makkar ◽

Anurag Aggarwal, ◽

Farheen Mushtaq ◽

...

Keyword(s):

Calcium Hydroxide ◽

Root Canal ◽

Comparative Evaluation ◽

Root Canal Treatment ◽

In Vivo Study ◽

Post Operative Pain

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Accuracy of Various Diagnostic Aids in Detection of MB2 Canal in Maxillary First Molar: In vivo Study

World Journal of Dentistry ◽

10.5005/jp-journals-10015-1369 ◽

2016 ◽

Vol 7 (2) ◽

pp. 78-82

Author(s):

Sanjyot Mulay ◽

Gaurav Kadam ◽

Hansa Jain

Keyword(s):

Root Canal ◽

Root Canal Treatment ◽

In Vivo Study ◽

Age Group ◽

Visual Method ◽

Radiographic Method ◽

Nonsignificant Difference ◽

Molar Teeth ◽

Males And Females

ABSTRACT Aim To evaluate and compare the accuracy of radiographic, visual, dye and magnification method in detection of second mesiobuccal (MB2) canal in maxillary first molar. Materials and methods One hundred males and females patients in age group of 20 to 45 years with maxillary first molar teeth indicated for root canal treatment were selected for the study. The presence of MB2 canal in maxillary first molar was observed by four independent observers using radiographic, visual, dye, magnification diagnostic aids. Results The study showed that there was a large difference in detecting MB2 canal in maxillary first molar when radiographic was compared with visual method and magnification method (i.e., p < 0.01). Whereas there was a nonsignificant difference when radiographic and dye method were compared (i.e., p > 0.05). Conclusion It was concluded that the incidence of MB2 canal in mesiobuccal roots of permanent maxillary first molars was detected most using magnification method, i.e., 87%. Accuracy of radiographic method was found to be least, i.e., 19%. How to cite this article Mulay S, Kadam G, Jain H. Accuracy of Various Diagnostic Aids in Detection of MB2 Canal in Maxillary First Molar: In vivo Study. World J Dent 2016;7(2):78-82.

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