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

2015, Number 1

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Rev ADM 2015; 72 (1)

Dentin removal in oval root canals using reciprocal action instruments and manual instrumentation.

Hinojosa GELN, Parra RO, Téllez JH, Luna LCA, Hernández HI

Language: Spanish
References: 22
Page: 26-32
PDF size: 259.24 Kb.


ABSTRACT

Introduction: Incomplete mechanical debridement of oval-shaped canals or root canals with isthmuses can often result in microorganisms and pulp tissue residue remaining. Objective: To evaluate the removal of dentin caused by reciprocal instrumentation and manual instrumentation in oval-shaped root canals and root canals with isthmuses. Material and methods: A controlled, random, in vitro experiment was carried out, involving sixty premolar and molar root canals with fully-formed apices, in which and the root canal partially visible under X-ray. The endodontic cube method was used on the teeth, which were cut horizontally 3 and 8 mm from the apex. Stereomicroscope images of the teeth were obtained before and after instrumentation. In Group 1, the latter was performed using a Reciproc R25 and the same procedure was performed in Group 2, in conjunction with manual instrumentation (#.08 and #.10 K-file) in a buccolingual direction before and after. Image Tool software was used to measure the area, buccolingual diameter, mesiodistal diameter, shape, and type of the root canal isthmus. Using Adobe Photoshop, the images were superimposed to allow the dentin removal to be observed in detail. Paired and independent t-tests were performed on the data using SPSS 21.0 (alpha 0.05). Results: Significant dentin removal was observed in both groups (p ‹ 0.05), though no statistically significant differences were found between the two methods of instrumentation (p › .05). Conclusions: Manual instrumentation in a buccolingual direction with small-gauge files does not offer any significant improvement in dentin removal in oval-shaped root canals or root canals with isthmuses instrumented with the R25 Reciproc.


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