Results: 68

Comparación entre los sistemas manual de limas de acero inoxidable y el rotatorio de limas de níquel titanio, en la conformación de conductos radiculares curvos in vitro

Odontol. vital; (31), 2019
Resumen Introducción: Estudio experimental donde se procuró comparar el efecto del sistema manual y del rotatorio sobre la conformación de conductos curvos. Metodología: Una muestra de 40 raíces mesiales de primeras molares inferiores fue aleatorizada en dos grupos iguales: grupos sistema manual d...

Dermatitis eczematosa alérgica por contacto al níquel. Presentación de un caso

Rev. MED; 27 (1), 2019
Resumen: Las reacciones alérgicas al níquel son frecuentes, dados los amplios usos y cualidades que ha demostrado este elemento en la producción industrial; la dermatitis por níquel, aunque afectaba de manera predominante a las mujeres, ha incrementado en los hombres por el uso de accesorios, joyerí...

Sociodemographic and clinical profile of patients with occupational contact dermatitis seen at a work-related dermatology service, 2000 - 2014

An. bras. dermatol; 94 (2), 2019
Abstract: BACKGROUND: Occupational dermatoses are common, especially contact dermatitis. Epidemiological studies on these dermatoses are scarce in Brazil and they are necessary as part of the public policy to protect workers' health. OBJECTIVES: To identify sociodemographic and clinical profile of pati...

Dermatite de contato por corticoide em pacientes com dermatite atópica

Objetivo: Avaliar a sensibilização a corticoides tópicos e substâncias do teste de contato padrão e cosméticos em pacientes com dermatite atópica (DA) no Serviço de Alergia e Imunologia do HSPE-SP. Método: Estudo retrospectivo com análise de prontuário de pacientes com DA, classificados de aco...

Extrusión Apical de Barro Dentinario e Irrigante Producidos por Dos Sistemas de Instrumentación de Níquel Titanio al Utilizar Irrigación Pasiva o Activa

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...

Do laypersons perceive aesthetic differences between coated and uncoated orthodontic archwires?

ABSTRACT Introduction: Aesthetic brackets are routinely combined with metallic wires in fixed orthodontic therapy, mainly due to the disadvantages of the clinical use of aesthetic archwires. The current situation needs to be explored in the literature by considering laypersons' perceptions. Objective:...

Cyclic fatigue resistance of novel Genius and Edgefile nickel-titanium reciprocating instruments

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...

Cleaning effectiveness of a nickel-titanium ultrasonic tip in ultrasonically activated irrigation: a SEM study

Abstract In endodontic treatment, regardless of the instrumentation technique, the presence of a smear layer covering contaminated dentin walls is always a concern. Thus, irrigation plays an essential role in reducing bacterial load. To enhance irrigation effectiveness, different ultrasonic activation me...

Micro-CT evaluation of apical enlargement of molar root canals using rotary or reciprocating heat-treated NiTi instruments

J. appl. oral sci; 27 (), 2019
Abstract Objective The aim of this study was to evaluate the root canal preparation and apical enlargement of molar root canals with rotary or reciprocating heat-treated nickel-titanium (NiTi) instruments, by using micro-computed tomography (micro-CT). Methodology Mesial root canals (n=48) of mandibu...

Influence of cross-section and number of use in cyclic fatigue resistance of rotary instruments

Braz. j. oral sci; 18 (), 2019
Aim: The aim of present study was to evaluate if the cross-section and the number of use have influence in cyclic fatigue resistance of rotary files. Methods: K3 Endo (group K) and EndoSequence (group E) files, 25/.04, 25 mm, were subdivided into 3 subgroups (n=12) according to the number of uses, 1, 3 a...