0000000000368035

AUTHOR

Rui Madureira

showing 2 related works from this author

Shaping ability of nickel-titanium rotary instruments in simulated S-shaped root canals.

2009

Objective The aim of this study was to compare the shaping ability of 4 nickel-titanium rotary techniques and 1 hand technique in simulated S-shaped curved root canals. Study design Seventy-five simulated double-curved resin root canals were divided into 5 groups (n = 15). The canals were compared at 12 different levels and at 3 different times: before preparation and after preparation to master apical 25 and 35. Data were statistically analyzed by performing 2-by-2 comparisons with the Tukey parametric test of variance analysis using a confidence interval of 95%. Results All of the 75 resin blocks presented transportation of the root canals by transforming the apical curvature into a strai…

Dental Stress AnalysisDental InstrumentsFlexibility (anatomy)Hand techniqueRoot (chord)Normal DistributionDentistryCurvatureNickelmedicineHumansTooth RootPliabilityGeneral DentistryParametric statisticsMathematicsTitaniumAnalysis of Variancebusiness.industryStructural engineeringStainless SteelModels Dentalmedicine.anatomical_structureOtorhinolaryngologyNickel titaniumSurgeryEquipment FailureOral SurgeryDental Pulp CavitybusinessRoot Canal PreparationDental AlloysOral surgery, oral medicine, oral pathology, oral radiology, and endodontics
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Estudo Comparativo da Infiltração Apical entre Dois Cimentos Endodônticos

2009

ResumoO objectivo deste estudo é comparar a capacidade de selamento apical de dois cimentos endodônticos. Foram utilizados trinta e oito dentes monorradiculares e divididos em dois grupos de 15 elementos, de acordo com o cimento utilizado (Grupo A: AH Plus e Grupo B: Tubli-Seal). Foram utilizados oito dentes nos grupos controlo positivo e negativo que não foram obturados (Grupo C). Os canais foram instrumentados pela técnica de crown-down, utilizando as limas Hero Shaper® and Hero 642® (Micro-Mega S.A., Besançon, France) e irrigados com hipoclorito de sódio a 5,25% entre cada instrumento. O smear layer foi removido utilizando 3ml de EDTA a 17% no final da instrumentação durante 3 minutos, s…

PhysicsMateriais de obturação endodônticosEndodontic filling materialsAH PlusApical leakageInfiltração apicalTubli-SealSurgeryApical leakageGeneral DentistryHumanitiesRevista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial
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