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000646118.pdf: 735617 bytes, checksum: dc5a10ed8999c36928e1b3f1c6003574 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / As características físicas, químicas e morfológicas da dentina remanescente foram analisadas após a remoção químico-mecânica e mecânica do tecido cariado. Molares decíduos cariados extraídos foram seccionados no centro da lesão de cárie, no sentido mésio-distal, em duas metades semelhantes e os espécimes gerados foram divididos em 3 grupos de acordo com o método utilizado para remoção do tecido cariado: grupo CS (Carisolv™), grupo PC (Papacárie®) e grupo BR (Broca). Foram realizadas as análises em microscopia confocal (MC), microscopia óptica de luz (MO), microscopia eletrônica de varredura (MEV), espectrometria de energia dispersiva (EDS) e microdureza (MD). Na análise da MC observou-se que o método químico-mecânico removeu menos tecido cariado e a análise histológica evidenciou maior preservação da estrutura dentinária. No MEV/EDS, após a remoção químico-mecânica do tecido cariado, a dentina remanescente apresentou reduzido conteúdo de cálcio, porém a superfície dentinária apresentava-se mais irregular e livre de lama dentinária. A microdureza da dentina após a remoção do tecido cariado foi semelhante, independente do método utilizado. Os resultados deste estudo mostraram que o método químico-mecânico é mais conservador na remoção do tecido cariado / The physical, chemical and morphological characteristics of the remaining dentine were analysed after chemomechanical and mechanical caries removal. Extracted carious deciduous molars were sectioned mesiodistally through the center of the carious lesion into two similar halves. The specimens were divided into three groups according to the method used for caries removal: CS group (Carisolv™), PC group (Papacárie®) and CB group (conventional bur). The specimes were analysed under confocal laser scanning microscopy (CLSM), light microscopy (LM), scanning electron microscopy (SEM), energy dispersive analysis of x-rays (EDS) and microhardness (MH). After chemomechanical caries removal, under CLSM the remaining dentine showed less carious tissue and more dentine structure preserved in the histological analysis. SEM/EDS analysis showed the remaining dentine after chemomechanical carious removal presented reduced calcium content with irregular surface and smear layer free. Regardless the method used for caries removal the microhardness of the dentine was similar. The results showed that chemomechanical method was more conservative in the removal of carious tissue
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.unesp.br:11449/104260 |
| Date | 03 June 2011 |
| Creators | Mastrantonio, Simone Di Salvo [UNESP] |
| Contributors | Universidade Estadual Paulista (UNESP), Santos-Pinto, Lourdes Aparecida Martins dos [UNESP] |
| Publisher | Universidade Estadual Paulista (UNESP) |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | Portuguese |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Format | 88 f. : il. + anexo |
| Source | Aleph, reponame:Repositório Institucional da UNESP, instname:Universidade Estadual Paulista, instacron:UNESP |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | -1, -1 |
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