Search results for "Dentina."

showing 10 items of 40 documents

Aspectos prácticos de la adhesión a dentina

2004

Aunque los sistemas adhesivos han mejorado notablemente, los objetivos que persiguen los nuevos adhesivos son los mismos que perseguían en tiempos de Buonocore. La adhesión debe ser duradera y conseguir siempre que sea posible una interfase cerrada con un sellado perfecto. Se analizan los cuatro aspectos principales que describen una correcta adhesión: Acondicionamiento del substrato, el desarrollo de nuevos adhesivos y técnicas, mecanismos de unión (capa híbrida y tags de resina), resina y su polimerización, sobre todo teniendo en cuenta la contracción de polimerización.

AdhesióndentinaOtorhinolaryngologytécnicaGeneral DentistryAvances en Odontoestomatología
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Ipersensibilità dentinale: una nuova strategia di trattamento

2012

Settore MED/28 - Malattie Odontostomatologicheipersensibilità dentinale Pro-Argin
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Evaluation of the Diode laser (810nm,980nm) on dentin tubule diameter following internal bleaching

2015

Background: The aim of this study was to evaluate the effect of diode laser irradiation and bleaching materials on the dentinal tubule diameter after laser bleaching. Material and Methods: The dentin discs of 40 extracted third molar were used in this experiment. Each disc surface was divided into two halves by grooving. Half of samples were laser bleached at different wavelengths with two different concentrations of hydrogen peroxide. Other half of each disc with no laser bleaching remained as a negative control. Dentin discs were assigned randomly into four groups (n=10) with following hydrogen peroxide and diode laser wavelength specifications; Group 1 (30% - 810 nm), group 2 (30% - 980 …

Materials sciencegenetic structuresOdontologíalaw.invention030207 dermatology & venereal diseases03 medical and health sciences0302 clinical medicinestomatognathic systemlawBleaching materialsDentinmedicineGeneral DentistryDiodeResearchEsthetic Dentistry030206 dentistryAnatomy:CIENCIAS MÉDICAS [UNESCO]LaserCiencias de la saludstomatognathic diseasesDentinal TubuleTubulemedicine.anatomical_structureUNESCO::CIENCIAS MÉDICASsense organsBiomedical engineeringJournal of Clinical and Experimental Dentistry
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Evolución del germen dental trasplantado heterotópicamente en la dermis: un estudio histológico en la rata

2004

En este estudio hemos analizado la potencialidad de desarrollo del germen dental en fase de corona. Para ello, los gérmenes dentales de rata recién nacida fueron trasplantados en las bolsas dérmicas de la oreja de ratas isogénicas. Siete y catorce días después del trasplante, se desarrollaron las estructuras morfológicas dentales típicas, con ameloblastos y odontoblastos bien diferenciados. Ulteriormente, los procesos de reacción inflamatoria del tejido huésped con infiltración celular abocaron a la desaparición de los tejidos dentales. Desde el primer momento de nuestro análisis, los trasplantes desarrollaron una dentina anómala u osteoide cuyo tamaño fue paulatinamente incrementando con e…

stomatognathic diseasesdentinastomatognathic systemtejido osteoideUNESCO::CIENCIAS MÉDICASOdontologíatrasplanteodontoblastoreacción odontoblástica:CIENCIAS MÉDICAS [UNESCO]Ciencias de la saludGermen dental
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La evolución de la adhesión a dentina

2004

-Isabel.Camps@uv.es Se realiza una revisión a la historia de la adhesión comenzando en las culturas precolombinas ("era pre-adhesiva"), para continuar en la "era adhesiva" con las aportaciones de Buonocuore y la aparición del Bis-GMA, pasando por la incorporación al mercado dental de los fosfatos, los oxalatos, el sistema Gluma. Se analiza también la descripción la capa híbrida por Nakabayashi, después aparecen los primers acuosos y la hibridación de tejidos duras hasta llegar a los sistemas adhesivos autograbadores. An overview of dentin bonding history is done by the author since early south American cultures (pre-adhesive age) to continued in the adhesive age with Buonoccore's findings a…

HistoryGlumamedia_common.quotation_subjectArtdentinHistoria; Adhesion; Dentina.bondingHistoria:CIENCIAS MÉDICAS ::Cirugía ::Ortodoncia-Estomatología [UNESCO]adhesionUNESCO::CIENCIAS MÉDICAS ::Cirugía ::Ortodoncia-EstomatologíaOtorhinolaryngologydentinaSouth americanGeneral DentistryHumanitiesDentina.media_common
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L'ipersensibilità dentinale, un possibile effetto indesiderato della terapia causale: attuali possibilità terapeutiche.

2011

ipersensibilità dentinale terapia causaleSettore MED/28 - Malattie Odontostomatologiche
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Il substrato dentinale lungo il post-space prima della cementazione adesiva dei perni in fibra

2005

Obiettivi: nel seguente lavoro è stata valutata la morfologia delle superfici dentinali lungo il post-space, subito prima delle fasi connesse con la cementazione adesiva, per verificare le modificazioni indotte dalle procedure che "routinariamente" si effettuano per renderlo idoneo all'adesione di un perno in fibra, durante la preparazione meccanica del post-space ed il condizionamento del sub strato dentinale. Metodi: su 20 elementi dentali monoradicolati, estratti e divisi in 2 gruppi trattati endodonticamente con strumenti in NiTi e con due diversi protocolli di irrigazione , sono stati preparati , con frese calibrate gli alloggiamenti per il perno in fibra. Le superfici lungo il post sp…

Post-space perni in fibrafango dentinale.
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Evaluation of three different rotary systems during endodontic retreatment - Analysis by scanning electron microscopy

2015

Background: Endodontic therapy is considered a series of important and interdependent steps, and failure of any of these steps may compromise the treatment outcome. This study aimed to evaluate the effectiveness of three different rotary systems in removing obturation materials during endodontic retreatment using scanning electron microscopy (SEM) analysis. Material and Methods: Thirty-six endodontically treated teeth were selected and divided into 3 groups of 10 and 1 control group with 6 dental elements. The groups were divided according to the rotary system used for removing gutta-percha, as follows: G1: ProTaper system; G2: K3 system; G3: Mtwo system; and G4: Control group. Thereafter, …

0301 basic medicineEndodontic therapyScanning electron microscopebusiness.industryResearchTreatment outcomeSignificant differenceObturation materialDentistryOdontología030206 dentistry:CIENCIAS MÉDICAS [UNESCO]Ciencias de la saludOperative Dentistry and Endodontics03 medical and health sciences030104 developmental biology0302 clinical medicineDentinal TubuleUNESCO::CIENCIAS MÉDICASMedicinebusinessGeneral DentistryEndodontic retreatmentJournal of Clinical and Experimental Dentistry
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INFLUENZA DI DIFFERENTI SPESSORI DENTINALI SULLA PROPAGAZIONE DEL CALORE LUNGO LA SUPERFICIE RADICOLARE

2009

Settore MED/28 - Malattie OdontostomatologicheSpessori dentinali termografia infrarossi system b
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Effects of ultrasonically activated irrigants with or without surfactant on smear layer removal after post space preparation

2012

The aim of this study was to compare the effects of different NaOCl and EDTA formulations with/without ultrasonic use on smear layer removal and root canal surface characteristics after post space preparation. Study design: After post space preparations, forty-six teeth were subjected to different post space irrigation regimes; G1, 17% EDTA; G2, 17% EDTA+Ultrasonic activation; G3, EDTA-T; G4, EDTA-T+Ultrasonic activation; G5, NaOCl; G6, NaOCl+Ultrasonic activation. Specimens were examined under scanning electron microscope and scored for debris and smear layer removal and dentinal tubule opening and statistically analyzed with Kruskal Wallis and Dunn's test. Significance value was set at p<…

medicine.medical_specialtyChemistryScanning electron microscopeRoot canalSmear layerOdontología:CIENCIAS MÉDICAS [UNESCO]Ciencias de la saludSurgeryDentinal Tubulemedicine.anatomical_structurePulmonary surfactantUNESCO::CIENCIAS MÉDICASmedicineUltrasonic sensorGeneral DentistryNuclear chemistry
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