Evaluation of working length determination methods: An in vivo / ex vivo study

Shanmugaraj, Muthu; Nivedha, Rajendran; Rajan, Mathan; Balagopal, Sundaresan

doi:10.4103/0970-9290.32421

Cited by 28 publications

(1 citation statement)

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“…In addition, Bogaert and Van Nieuwenhuysen [18] pointed out that apex locators should be used in confirmation of the prior radiography and the results of electronic measurement are still subject to interpretation or no method is absolutely reliable. Thereafter, Mutu Shanmungaraj [17] recognizes that the exact length of the canal location can be determined by histological methods. While Kim et al…”

Section: Discussionmentioning

confidence: 99%

Determination of the Root Canal Length of Teeth of Bantu Patients Attending the Teaching Hospital of Kinshasa University

Bukama¹,

Issourdi²,

Bushabu³

et al. 2018

OJST

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Background: There is paucity of literature on the determination of the root canal length of Bantu subjects in dental professional practicing in Africa and Democratic Republic of Congo in particular. Aims: The aim of the present study was to determine the root canal length of teeth of Bantu patients extracts attending the Teaching Hospital of Kinshasa University. Methods and Material: Prospective cross-sectional study was carried out in the service of Conservative Dentistry. The patients suffering with pulpitis of permanent teeth which were selected for root canal treatment during the period of January 2014 to December 2016 were included. All patients whose main root canals were inaccessible, teeth carrying prosthesis, teeth with large coronal decay, teeth having periapical periodontitis, supernumerary teeth, wisdom and primary teeth were excluded. Results: The upper canines presented some significant longer canals compared to the lower canine (23.4 ± 2.3 mm and 21.6 ± 1.8 mm). Palatal canals of the first and second molar were respectively longer as compared to the superior teeth canals (21.5 ± 1 mm, 21.3 ± 2 mm). The distal canals of the first and second molar were the longest in the mandibular arch respectively measuring 20.7 ± 2.0 mm and 21.5 ± 1.7 mm. Conclusion: Data obtained from Bantu patients show slightly shorter roots compared to How to cite this paper:

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Section: Discussionmentioning

confidence: 99%

Determination of the Root Canal Length of Teeth of Bantu Patients Attending the Teaching Hospital of Kinshasa University

Bukama¹,

Issourdi²,

Bushabu³

et al. 2018

OJST

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Development and Evaluation of an Endodontic Simulation Model for Dental Students

Wolgin

Wiedemann

Frank

et al. 2015

Journal of Dental Education

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The aims of this study were to develop an endodontic simulation model able to implement the electronic method of working length determination (electronic apex locators, EALs) in a dental school, to evaluate the practicality of this tool for dental students, and to compare the accuracy of working length measurements achieved by the EAL and the radiographic method. A new simulation model was constructed by embedding extracted human teeth in a self-cured resin, along with a conductive medium. After radiographic and electronic working length determinations, root canal instrumentation was performed by students at a dental school in Austria according to the working lengths obtained from the EAL. Subsequently, root apices (n=44) were longitudinally sectioned using a diamond coated bur. Measurements of the distance between the anatomical root apex (ARA) and the apical constriction (AC) as well as between ARA and the ascertained apical point of endodontic instrumentation were performed using digital photography and a 3D computer-assisted design software. The distance between ARA and the radiologic (ARA-R) or electrometric (ARA-EL) readings of the apical point of endodontic instrumentation was compared with the actual distance ARA-AC. The accuracy of both methods was determined. The difference between the actual distance ARA-AC and the targeted radiological distance was statistically signiicant (p=0.0001), as was the measured distance between ARA-R and ARA-EL (p=0.016). The electronic method seems to be more precisely referring to the AC (R²=0.0198) than the radiographic method (R²=0.0019). These results suggest that the endodontic simulation model described in this study can be successfully used in preclinical dental education.

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