Comparison of the cleaning efficacy of the FKG race system and hand instrument in molar root canal

Abstract

Introduction and objective:The aim of this study was to evaluate the ability of root canal cleaning of the RaCe rotary instrumentation system (FKG Dentaire – La-Cheaux-de Fonds – Switzerland), compared to manual filing with Stainless Steel K-files (Maillefer Instruments – Ballaigues – Switzerland).Material and Method:Twenty extracted human teeth (maxillary molars) were selected and their pulp tissue was removed after coronal access. The root canals were filled with a dye (India ink) and allowed to dry for 48 hours, followed by establishment of the working length of the mesiobuccal root; then, half of the specimens were instrumented by the modified Oregon technique and the other half were instrumented by crown-down sequence of the RaCe system. After preparation, the teeth were longitudinally sectioned and evaluated according to the amount of remaining dye.Results:Data obtained were registered as numerical scores, and the arithmetic means were compared between groups using the Mann Whitney test. Both techniques were unable to completely clean the interior of the root canals, with a better performance of the manual technique only at the middle third.Conclusion:It could be concluded that the RaCe system was able to provide satisfactory cleaning, similar to that obtained by the manual instrumentation technique.

Radiographic analysis the obturation’s quality in root canal treatment performed by a South Brazilian sample of undergraduate students

“…Several studies in literature compare the quality of RCT performed by hand and rotatory/reciprocate instrumentation techniques [22,23]. In our sample, all cases were performed by hand instrumentation.…”

Ex vivo post-instrumentation qualitative evaluation comparing three techniques: Step Back - Oregon modified by F.O.B - Protaper Rotary Technique

“…También existen trabajos cuyo objetivo fue realizar análisis de la acción de los instrumentos endodónticos en la conformación y limpieza de los conductos pero utilizando una metodología diferente como la de la remoción de colorantes de las paredes del conducto que fue realizado por Gonçalves et al (13) y Sipert et al (2) La técnica escalonada con retroceso programado fue escogida por ser una de las técnicas más antiguas y por ser la utilizada en la Facultad de Odontología Pierre Fauchard. La técnica Oregon modificada por la FOB fue usada por ser una técnica corono-apical que se implementó recientemente para la enseñanza en la Facultad de Odontología Pierre Fauchard y es muy utilizada internacionalmente en la clínica diaria mientras que la ProTaper se escogió por ser un avance tecnológico de instrumento rotatorio, por la rapidez y eficacia que presentar al tener pocos instrumentos (23).…”

“…Esta fase es realizada con instrumentos endodónticos y soluciones irrigadoras que promueven la limpieza de las paredes del conducto removiendo materia orgánica e inorgánica. Los términos "cleaning and shaping" (limpieza y modelado), sinónimos de preparación químico-mecánica, resaltan que la fase de instrumentación no implica solamente remoción de tejido pulpar, material orgánico de la dentina infectada y de la capa residual (smear layer), sino también una adecuada preparación de las paredes internas, requisito necesario para las etapas del tratamiento posterior a la instrumentación (1)(2)(3).…”

Análise Da Capacidade De Limpeza De Três Técnicas De Instrumentação Em Canais Radiculares Achatados: Diaphanization Study

“…Nevertheless, anatomical diversity, such as those found in flattened canals, may hinder therapy, often leading to failure. (13)(14)(15)(16) Flattened or oval canals studies use the mesial root of molars (17,18) or mandibular incisors. (5,10,19,20) Extracted mandibular incisors were used in this study by having a pronounced flattening on the mesiodistal direction, which can generate a second canal lingually located to the main one, as well as the occurrence of severely flattened canals, with elongated cross-section, being the biggest diameter on the buco-lingual direction.…”

“…To evaluate the instrumentation techniques as for their cleaning ability, the present study used the methodology that makes use of dentin walls coloring, similar to Grecca (21) and Sipert et al (17) studies. It is important to mention that the dye (Indian Ink) used is water insoluble, which made each instrumentation technique the only responsible for the dye removal.…”