Abstract Objective: To examine the cyclic fatigue resistance and surface topography of TruNatomy and ProTaper Gold nickel-titanium rotary files and evaluate the presence of alterations to surface topography following instrumentation in simulated curved canals. Material and Methods: Twenty-four nickel-t...
RESUMEN: El barro dentinario producido durante tratamiento endodóntico puede ser extruido hacia el tejido periradicular junto con el irrigante, produciendo inflamación y dolor postoperatorio. Comparar la cantidad de extrusión apical de barro dentinario e irrigante, producido durante la preparación qu...
Abstract: This study aimed to assess the cyclic fatigue resistance of Genius and EdgeFile X1 reciprocating instruments compared with WaveOne Gold Primary. Twenty Genius (Ultradent) 25.04, 20 Genius 30.04, 20 EdgeFile X1 (EdgeEndo) and 20 WaveOne Gold Primary (Dentsply Maillefer) instruments were included...
Instrumentos Dentales/normas,
Diseño de Equipo,
Análisis de Falla de Equipo,
Ensayo de Materiales,
Microscopía Electrónica de Rastreo,
Níquel/química,
Valores de Referencia,
Preparación del Conducto Radicular/instrumentación,
Estadísticas no Paramétricas,
Estrés Mecánico,
Propiedades de Superficie,
Factores de Tiempo,
Titanio/química
A resina composta fotoativável é usualmente utilizada
para o procedimento de colagem de braquetes ortodônticos.
No entanto, seu uso requer cuidados antes
da fotoativação, pois sua polimerização pode ocorrer
precocemente por outras fontes de luz, que não a de
um fotoativador dentário (e.g., luz a...
Abstract The aim of the present study was to evaluate the cyclic fatigue of two anatomic finishing files: XP-Endo Finisher and XP-Clean. Roughness pattern and the micro-hardness of the files were also assessed. Instruments were subjected to cyclic fatigue resistance measuring the time to fracture in an a...
The aim of this study was to evaluate canal transportation; centering ability; dentin thickness;
change in volume, and time spent on shaping ability of maxillary molars prepared with
mechanized NiTi file systems composed of a conventional NiTi alloy (Mtwo), a CM-Wire
(Prodesign R and Hyflex CM) NiTi allo...
Preparación del Conducto Radicular/instrumentación,
Instrumentos Dentales,
Diseño de Equipo,
Níquel/química,
Titanio/química,
Microtomografía por Rayos X/métodos,
Cavidad Pulpar/diagnóstico por imagen,
Diente Molar/diagnóstico por imagen,
Valores de Referencia,
Reproducibilidad de los Resultados,
Cavidad Pulpar/anatomía & histología
Abstract Objective To evaluate the amount of apically extruded debris, percentage of foraminal enlargement and apical foramen (AF) deformation that occurred during root canal preparation with different reciprocation systems: Reciproc, WaveOne (M-Wire), and ProDesign R (Shape Memory Technology Wire) at t...
Instrumentos Dentales/efectos adversos,
Diseño de Equipo,
Níquel/química,
Distribución Aleatoria,
Valores de Referencia,
Reproducibilidad de los Resultados,
Preparación del Conducto Radicular/efectos adversos,
Preparación del Conducto Radicular/instrumentación,
Preparación del Conducto Radicular/métodos,
Estadísticas no Paramétricas,
Titanio/química,
Ápice del Diente/anatomía & histología,
Ápice del Diente/química
Abstract Coated archwires and ceramic brackets have been developed to improve facial esthetics during orthodontic treatment. However, their mechanical behavior has been shown to be different from metallic archwires and brackets. Therefore, the aim of this study was to compare the deflection forces in coa...
Análisis de Varianza,
Cerámica/química,
Materiales Biocompatibles Revestidos/química,
Estética Dental,
Fricción,
Ensayo de Materiales,
Fenómenos Mecánicos,
Níquel/química,
Diseño de Aparato Ortodóncico/métodos,
Soportes Ortodóncicos,
Alambres para Ortodoncia,
Valores de Referencia,
Reproducibilidad de los Resultados,
Estadísticas no Paramétricas,
Propiedades de Superficie,
Titanio/química
Abstract Objective The aim of this study was to evaluate the influence of torsional preloading on the cyclic flexural fatigue resistance of thermally treated NiTi instruments. Material and Methods Ten new instruments New Hyflex CM (HF 30.06; Coltene/Whaladent Inc.), Typhoon CM (TYP 30.06; Clinician's...
Instrumentos Dentales/normas,
Diseño de Equipo/métodos,
Falla de Equipo,
Ensayo de Materiales,
Microscopía Electrónica de Rastreo,
Níquel/química,
Docilidad,
Valores de Referencia,
Reproducibilidad de los Resultados,
Preparación del Conducto Radicular/instrumentación,
Rotación,
Estrés Mecánico,
Propiedades de Superficie,
Temperatura,
Factores de Tiempo,
Titanio/química,
Torsión Mecánica
Abstract This study evaluated the effects of three metal primers and one multi-mode adhesive system on the shear bond strength (SBS) of a flowable composite resin to nickel-chrome metal alloy (Ni-Cr). Ninety plates were cast from Ni-Cr and divided in nine groups (n=10). The surfaces were sandblasted with...
