ABSTRACT
Introducción: La preparación biomecánica es determinante para el éxito del tratamiento endodóntico, pues el tope apical y el límite de obturación son etapas operatorias fundamentales para garantizar el ensanchamiento del conducto manteniendo al mismo tiempo la configuración preoperatoria inicial. Objetivo: Determinar la eficacia de la técnica de instrumentación paso-atrás en tratamientos de endodoncia en una sesión. Métodos: Se realizó un estudio de intervención terapéutica en 30 pacientes mayores de 12 años de la Clínica Estomatológica Dr. Salvador Allende, municipio Cerro, La Habana, en el periodo comprendido entre diciembre de 2015 y junio de 2017. Se analizaron como variables: dolor posoperatorio, inflamación, exámenes radiográficos, éxito y fracaso de los tratamientos teniendo en cuenta condición pulpar y tipo de diente tratado. La presentación de la información se realizó mediante tablas de contingencia de dos entradas, utilizando como medida de resumen el tanto por ciento. Resultados: El 90 por ciento de los pacientes no padeció dolor posoperatorio; el 96,67 por ciento de los tratamientos fueron eficaces al no existir signos de inflamación; y el 3,3 por ciento de los exámenes radiográficos evolutivos mostró imágenes de procesos inflamatorios crónicos. Conclusiones: La técnica de instrumentación paso-atrás en el tratamiento de endodoncia en una sesión fue eficaz en la mayoría de los casos. El mayor porcentaje de pacientes tratados no refirió dolor posoperatorio ni presentó inflamación(AU)
Introduction: Biomechanical preparation is crucial for the success of endodontic treatment, since the apical top and the obturation limit are fundamental operational stages to ensure appropriate broadening of the duct maintaining the initial preoperative configuration. Objective: Determine the effectiveness of the step-back instrumentation technique in single-visit endodontic treatment. Methods: A therapeutic intervention study was conducted of 30 patients aged over 12 years at Dr. Salvador Allende Dental Clinic in the municipality of Cerro, Havana, from December 2015 to June 2017. The variables analyzed included postoperative pain, swelling, radiographic examination, success and failure of treatment based on pulp condition and type of tooth treated. Data were presented in two-entry contingency tables, with percentage as the measure of summary. Results: 90 percent of the patients did not have any postoperative pain, 96.67 percent of the treatments were effective in that there were no signs of swelling, and 3.3 percent of the evolutionary radiographic tests showed images of chronic inflammatory processes. Conclusions: The step-back instrumentation technique in single-visit endodontic treatment was found to be effective in most cases. The highest percentage of patients treated did not report any postoperative pain or swelling(AU)
Subject(s)
Humans , Treatment Outcome , Endodontics/instrumentation , Endodontics/methodsABSTRACT
Objective To study the clinical effects of different methods on endodontic inter appointment pain (EIAP) happened to the patients after premolar root canal preparations.Methods 152 teeth from 134 patients with acute or chronic pulpitis or apical periodontitis were randomly divided into T group and K group,used TiLos mixed root canal preparation system with step-down technique and stainless steel K file with step-back technique respectively to prepare root canal.Afterwards,the incidence rates of EIAP were observed and recorded.Results The incidence rates of EIAP in T group and K group were 6.17％ and 21.11％,respectively.There was statistically significant difference between the two groups (x2 =7.404,P ＜0.01).Conclusion TiLos mixed root canal preparation system with step-down technique to prepare root cancal can reduce the incidence rate of EIAP.
ABSTRACT
Objective To assess the effects of Mtwo for root canal therapy in the aged patients .Methods One hundred and fifty-two root canals in 64 teeth for root canal therapy (RCT) in aged patients(60~70years)were randomly divided into M groups and K groups.Mtwo machine with nickel titanium file was used in M group (32 teeth, 78 root canals), and stainless steel file in K group (32 teeth, 74 root canals).Root canal preparation time, root spread reaction, and canal filling effects were compared between two groups.Results The root canal preparation and filling in group M were better than in K group ( P <0.05).The time consumption of RCT in M group was shorter than in group K .Conclusions Mtwo shows good shaping ability and is safe for aged patients in root canal treatment with high efficiency .
ABSTRACT
To evaluate the clinical effects of rotary nickel-titanium instruments Mtwo in root canal therapy in the aged patients. Using step-back technique,80 teeth with pulpal and periapical involvement were instrumented by Mtwo in the M group, and by K file in the K group. Mtwo could keep the original curvature and flow of the root canals. No transportation, apical blockage, ledge or perforation was found in the M group. There was more complications in the K group than in the M group.The operative time was shorter and posttreatment pain seldom occurred in the M group. With rotary NiTi instruments Mtwo for seniles' root canals treatment, root canals can be prepared effectively and quickly,and is worth of clinical application.