Effectiveness of a hand file and three nickel-titanium rotary instruments for removing gutta-percha in curved root canals during retreatment

Schirrmeister, Jörg F.; Wrbas, Karl-Thomas; Schneider, F. H.; Altenburger, Markus Jörg; Hellwig, Elmar

doi:10.1016/j.tripleo.2005.03.003

Cited by 110 publications

(246 citation statements)

References 22 publications

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“…Many techniques with rotary nickel-titanium (NiTi) instruments (4 -7), ultrasonic instruments (8 -10), heat pluggers (11,12), and manual instruments with chemical solvents (chloroform, eucalyptol, orange oil) have been proposed for removing root filling materials (13)(14)(15). Rotary Ni-Ti instruments proved to be effective (4,5,16) and time-saving (4,17,18) in removing filling materials.…”

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confidence: 99%

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Efficacy of ProTaper Universal Retreatment Files in Removing Filling Materials during Root Canal Retreatment

Giuliani

Cocchetti

Pagavino

2008

Journal of Endodontics

131

137

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The aim of this study was to evaluate the efficacy of the ProTaper Universal System rotary retreatment system and of Profile 0.06 and hand instruments (K-file) in the removal of root filling materials. Forty-two extracted single-rooted anterior teeth were selected. The root canals were enlarged with nickel-titanium (NiTi) rotary files, filled with gutta-percha and sealer, and randomly divided into 3 experimental groups. The filling materials were removed with solvent in conjunction with one of the following devices and techniques: the ProTaper Universal System for retreatment, ProFile 0.06, and hand instruments (K-file). The roots were longitudinally sectioned, and the image of the root surface was photographed. The images were captured in JPEG format; the areas of the remaining filling materials and the time required for removing the gutta-percha and sealer were calculated by using the nonparametric one-way Kruskal-Wallis test and Tukey-Kramer tests, respectively. The group that showed better results for removing filling materials was the ProTaper Universal System for retreatment files, whereas the group of ProFile rotary instruments yielded better root canal cleanliness than the hand instruments, even though there was no statistically significant difference. The ProTaper Universal System for retreatment and ProFile rotary instruments worked significantly faster than the K-file. The ProTaper Universal System for retreatment files left cleaner root canal walls than the K-file hand instruments and the ProFile Rotary instruments, although none of the devices used guaranteed complete removal of the filling materials. The rotary NiTi system proved to be faster than hand instruments in removing root filling materials. (J Endod 2008;34:1381-1384

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mentioning

confidence: 99%

“…Rotary Ni-Ti instruments proved to be effective (4,5,16) and time-saving (4,17,18) in removing filling materials. However, none of the several treatment alternatives seems to guarantee canal walls that are completely free of debris (4,13,17).…”

mentioning

confidence: 99%

Efficacy of ProTaper Universal Retreatment Files in Removing Filling Materials during Root Canal Retreatment

Giuliani

Cocchetti

Pagavino

2008

Journal of Endodontics

131

137

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“…(19,(28)(29)(30) According to the present study, more than 76.4% of the walls that remained dirty after preparation were buccal or lingual walls, demonstrating the challenge of the instrumentation of these areas in flattened canals.…”

Section: Discussionmentioning

confidence: 50%

“…However, Schirrmeister et al, (28) while comparing ProTaper system with four other instruments in the preparation of simulated root canals, found that the RaCe system (by using the following files sequence: 40/10; 35/08; 30/06; 25/04 crown down direction, and 25/02; 30/02 at WL) presented the best canal preparation. This was not observed in our study, which showed no statistical diference among the used techniques.…”

Section: Discussionmentioning

confidence: 99%

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

Souza¹,

Gonçalves²,

Rasquin³

et al. 2015

RevBahianaOdonto

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The purpose of this study was to evaluate by diaphanization the cleaning ability of walls of flattened root canals prepared with three different instruments. Thirty lower incisors, which had their root canals filled with India ink after coronal access and determination of the work length, were selected. The samples were randomly divided into three groups of 10 teeth each, according to the instrument used in the preparation: Group 1 -hand files instrumentation; Group 2 -instrumentation with ProTaper Universal rotary files; Group 3 -instrumentation with iRace rotary files. After instrumentation, the teeth were diaphanized and evaluated by cleaning ability, analyzing the amount of dentin walls in which India ink was not removed. When performing the Kruskal-Wallis test (p>0.05) there were not statistical significant differences between the groups, as the arithmetic average of the scores at cervical, middle and apical thirds. None of the instruments used in root canal preparation of flattened root canals was able to perform a complete cleaning of the dentin walls.Keywords: Root Canal Preparation; Dental Pulp Cavity; Endodontics. ResumoO objetivo desse estudo foi avaliar utilizando a diafanização, a capacidade de limpeza das paredes de canais radiculares achatados preparados com três diferentes instrumentos. Foram selecionados 30 incisivos inferiores que após abertura coronária e odontometria tiveram os canais preenchidos com tinta nanquim, em seguida foram divididos aleatoriamente em três grupos de 10 dentes cada, de acordo com o instrumento utilizado no preparo: Grupo 1 -instrumentação com limas manuais; Grupo 2 -instrumentação com limas rotatórias ProTaper Universal; Grupo 3 -instrumentação com limas rotatórias iRace. Após a instrumentação, os dentes foram diafanizados e avaliados quanto a capacidade de limpeza, analisando-se a quantidade de paredes dentinárias em que a tinta nanquim não foi removida. Ao se realizar o teste de Kruskal Wallis (p>0,05) não foram observadas diferenças estatisticamente significantes entre os grupos, quanto a média aritmética dos escores nos terços cervical, médio e apical. Nenhum dos instrumentos utilizados no preparo biomecânico de canais radiculares achatados foi capaz de realizar uma completa limpeza das paredes dentinárias.

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“…En el presente estudio, esta acción no se realizó pues el objetivo del trabajo era determinar la capacidad de desobturar de cada instrumento por sí solo, lo que puede explicar en parte, la presencia de remanentes de material de obturación en todas las muestras Al evaluar el tiempo total utilizado en la desobturación de los canales radiculares hasta que no se observara limalla de gutapercha en los instrumentos, los resultados obtenidos fueron significativos para Protaper Universal y para Protaper Retratamiento en comparación con limas K #30, esto ocurre probablemente debido a la plastificación de la gutapercha durante la rotación del instrumento mecanizado dentro del canal, que se hace menos resistente y más fácil de ser penetrada y removida. Estos resultados son coincidentes con reportes previos (Hülsmann & Bluhm, 2004;Schirrmeister et al, 2006c), pero en desacuerdo con otros trabajos publicados en la literatura (Imura et al;Schirrmeister et al, 2006a).…”

Section: Discussionunclassified

Eficiencia de Tres Técnicas en la Remoción de Gutapercha

Monardes

Lara

Quiroga³

et al. 2016

Int. J. Odontostomat.

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RESUMEN:Cuando la terapia endodóntica fracasa, las opciones para solucionar este problema incluyen preservar el diente a través del retratamiento ortógrado o cirugía apical. Siempre que sea posible, el retratamiento endodóntico no quirúrgico debe ser la opción elegida. Diferentes sistemas rotatorios han sido propuestos como una alternativa a la instrumentación manual para la remoción de la gutapercha.El objetivo de este trabajo fue comparar la eficacia y la eficiencia en la desobturación total del canal radicular, utilizando dos tipos de instrumentos rotatorios: limas Protaper Universal ® y limas Protaper Retratamiento ® con limas manuales tipo K. Se instrumentaron 45 canales radiculares, con limas mecanizadas del sistema Mtwo ® , hasta la 25/06 y terminados de conformar con lima K #40 e irrigados con hipoclorito de sodio al 2,5 % entre cada instrumento. Los dientes fueron obturados con técnica de condensación lateral, utilizando conos de gutapercha y cemento Tubliseal ® .La muestra se dividió al azar en tres grupos A, B y C, de 15 canales cada uno, el grupo A se desobturó con limas ™Protaper Universal. El grupo B se desobturó con limas ™Protaper retratamiento y el grupo C se desobturó totalmente con limas K. Se cronometró cada procedimiento de desobturación y al término de esta, se tomó una radiografía en sentido buco-lingual y otra en sentido mesio-distal para cuantificar la remoción de gutapercha en cada grupo. Los resultados muestran que no existe diferencia significativa en la eliminación total del relleno endodóntico entre los tres grupos (p= 0,271) pero que los tiempos empleados en la desobturación total de los canales entre los grupos, muestra diferencias significativas entre Protaper Retratamiento y limas K, y entre Protaper Universal y limas K (p <0,05). Bajo las condiciones de este estudio, ningún sistema fue capaz de remover toda la gutapercha del interior del canal radicular.PALABRAS CLAVES: retratamiento endodóntico, limas k, limas protaper universal, limas protaper retramiento. INTRODUCCIÓNCuando la terapia endodóntica fracasa, las opciones de tratamiento incluyen preservar el diente por medio del retratamiento ortógrado o la cirugía apical. Siempre que sea posible, el retratamiento endodóntico no quirúrgico debe ser la opción elegida, ya que es el método más conservador para resolver el problema (Saad Al-Hadlaq et al., 2007).El objetivo principal del retratamiento endodóntico es recuperar el acceso al foramen apical y la permeabilidad del canal a través de la completa remoción del material obturador, para facilitar la correcta limpieza, conformación y obturación tridimensional del sistema de canales radiculares (Mandel & Friedman, 1992). La remoción total de gutapercha particularmente, cuando está bien compactada o el tratamiento ha sido realizado hace mucho tiempo se transforma en un procedimiento engorroso, que demanda de varias sesiones clínicas, para mejorar esto, diferentes sistemas rotatorios han sido propuestos como una alternativa a la instrumentación manual para la remoción de la gutaper...

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Effectiveness of a hand file and three nickel-titanium rotary instruments for removing gutta-percha in curved root canals during retreatment

Cited by 110 publications

References 22 publications

Efficacy of ProTaper Universal Retreatment Files in Removing Filling Materials during Root Canal Retreatment

Efficacy of ProTaper Universal Retreatment Files in Removing Filling Materials during Root Canal Retreatment

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

Eficiencia de Tres Técnicas en la Remoción de Gutapercha

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