• JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
 
  Bookmark and Share
 
 
Doctoral Thesis
DOI
10.11606/T.23.2018.tde-04042018-115433
Document
Author
Full name
Paula Mendes Acatauassú Carneiro
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2017
Supervisor
Committee
Turbino, Miriam Lacalle (President)
Rode, Kátia Martins
Rodrigues Filho, Leonardo Eloy
Shimaoka, Angela Mayumi
Silva, Patricia Moreira de Freitas Costa e
Title in Portuguese
Estudo da interface entre uma resina autoadesiva e a dentina hígida ou afetada por cárie
Keywords in Portuguese
Adesão
Cárie dental
Dureza
Microscopia confocal
Microscopia eletrônica de varredura
Resina autoadesiva
Abstract in Portuguese
O objetivo desde estudo foi analisar a microdureza e as características morfológicas da interface de união entre uma resina composta flow autoadesiva (Vertise Flow) e a dentina humana hígida ou afetada por cárie, em comparação às interfaces formadas por outros dois materiais: um cimento de ionômero de vidro modificado por resina (Fuji II LC) e um sistema adesivo universal (Single Bond Universal). Foram realizadas cavidades do tipo classe I na dentina oclusal de molares humanos e dentina afetada por cárie foi produzida na parede pulpar das cavidades por meio do método microbiológico. Os espécimes foram restaurados de acordo com os grupos experimentais e cortados no sentido vestíbulo-lingual para evidenciação da interface adesiva. Os espécimes foram submetidos aos ensaios de microdureza Knoop (n=5) e analisados por meio de microscopia eletrônica de varredura (n=3) e microscopia confocal de varredura a laser (n=10). A análise de variância dois fatores e teste de Tukey foram realizados para a análise estatística quantitativa da variável dureza (p<0,05%). As características morfológicas foram descritas após análise qualitativa. A dureza da camada de material variou em função da composição de cada material. A dureza da camada híbrida foi influenciada de acordo com o material e os maiores valores de dureza foram obtidos quando o sistema adesivo universal foi utilizado. A camada híbrida formada pela dentina afetada por cárie apresentou dureza inferior independente do material utilizado. Quanto à morfologia, os materiais testados promoveram a formação de interfaces com características diferentes entre si, entretanto, todos os materiais foram capazes de formar tags na camada híbrida. Porém, quando a interface envolveu a dentina afetada por cárie, observou-se maior quantidade de falhas e as camadas apresentaram-se irregulares.
Title in English
Study of a interface created by a self-adhesive resin and sound or caries-affected dentin
Keywords in English
Adhesion
Confocal
Dental Caries
Hardness
Microscopy
Microscopy Electron
Scanning
Self-adhesive Resin
Abstract in English
The aim of this study was to analyze the microhardness and morphological characteristics of the bonding interface between a self-adhesive flowable composite (Vertise Flow) and sound or caries-affected dentin, comparing to interfaces formed by other materials: a resin-modified glass ionomer cement (Fuji II LC) and a universal adhesive system (Scotchbond Universal Adhesive). Class I cavities were made in the occlusal dentin of human molars and dentin affected by caries was produced in their pulp wall, using the microbiological method. The specimens were restored according to the experimental groups and cut in the vestibular-lingual direction to expose the adhesive interface. The specimens were submitted to transversal Knoop microhardness tests (n=5) and analyzed by scanning electron microscopy (n=3) and confocal laser scanning microscopy (n=10). Two-way repeated measures analysis of variance and Tukey's post-hoc tests were performed for the hardness results (?:0.05). Morphological characteristics were qualitative analyzed. The hardness of the material layer varied according to the composition of each material. The hardness of the hybrid layer was influenced according to the material and the highest values of hardness were obtained when the universal system was used (p<0.05). The hybrid layer formed by dentin caries-affected presented low hardness values independently of the material used. Morphologically, the tested materials promoted the formation of interfaces with different characteristics, although all the materials were able to form tags in dentin. However, when the interfaces involved caries-affected dentin, a greater number of defects were observed and the layers were irregular.
 
WARNING - Viewing this document is conditioned on your acceptance of the following terms of use:
This document is only for private use for research and teaching activities. Reproduction for commercial use is forbidden. This rights cover the whole data about this document as well as its contents. Any uses or copies of this document in whole or in part must include the author's name.
Publishing Date
2018-04-17
 
WARNING: Learn what derived works are clicking here.
All rights of the thesis/dissertation are from the authors
CeTI-SC/STI
Digital Library of Theses and Dissertations of USP. Copyright © 2001-2021. All rights reserved.