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ISSN 0001-0944 (Print)
Órgano Oficial de la Asociación Dental Mexicana

2015, Number 5

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Rev ADM 2015; 72 (5)

BRAN-RS model for teaching electronic root canal length measurement without X-ray confirmation by undergraduate students: A pilot study

Broon NJ, Padilla DRS, Torres CA, Cruz Á

Language: Spanish
References: 44
Page: 265-271
PDF size: 859.66 Kb.


ABSTRACT

Purpose: To demonstrate how two undergraduate students perform electronic root canal measurement without X-ray confirmation using the BRAN-RS model. Material and methods: Six permeable root canals (4 mesial and 2 distal) from two natural molars; Raypex® 6 electronic apex locator; acrylic typodont; and alginate. The teeth were inserted in the molar space, which had been widened and filled with alginate. The lip clip was placed below the typodont. An access cavity was made in each molar and the entrance to the root canal located and widened using a number 4 Gates-Glidden drill. Once the Raypex® device was connected, a number 15 or 20 K-file was gently introduced into each canal and the measurement circuit closed using the file clip. The position of the file within the foramen was shown on the screen in the form of a red bar and a red dot. The file was readjusted within the first two yellow bars and secured using a light-cured resin. The molars were removed from the alginate, then diaphonized and evaluated under a clinical microscope at 16X magnification to confirm the working length. Results: In the six root canals, the position of the file relative to the apical foramen was 100% accurate. Conclusion: The BRAN-RS model is accurate, easy to perform, and can be used by undergraduate students in the preclinical practice of root canal measurement.


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