Avaliação in vitro da microinfiltração marginal em restaurações classe II utilizando diferentes tecnicas de inserção da resina composta condensavel
| Autor: | Casanovas, Rosana Costa |
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| Jazyk: | portugalština |
| Rok vydání: | 2001 |
| Předmět: | |
| Zdroj: | Repositório Institucional da UnicampUniversidade Estadual de CampinasUNICAMP. |
| Druh dokumentu: | masterThesis |
| Popis: | Orientadores : Giselle Maria Marchi Baron, Luiz Andre Freire Pimenta Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba Made available in DSpace on 2018-07-27T21:04:08Z (GMT). No. of bitstreams: 1 Casanovas_RosanaCosta_M.pdf: 2671139 bytes, checksum: 49a86b76e273f9f804c328d6a384b208 (MD5) Previous issue date: 2001 Neste trabalho, estudou-se a influência de quatro diferentes técnicas de inserção da resina composta condensável fotoativada em cavidades de classe 11, no vedamento marginal, através de testes de infiltração de um agente corante. Foram realizadas 120 cavidades em dentes bovinos extraídos, com parede gengival localizada em dentinalcemento, sendo divididas, aleatoriamente, em 4 grupos (n = 30), de acordo com as técnicas restauradoras: Grupo 1- Inserção Única, Grupo 2- Inserção em Incrementos Horizontais, Grupo 3- Inserção em Incrementos Oblíquos e Grupo 4- Inserção Mista. As cavidades foram restauradas empregando-se o sistema adesivo (Prime & Bond 2.1 This work evaluated the influence of four different insertion techniques of light-cured condensable composite resin in class II restorations on marginal sealing by the mieroleakage tests of a dye agent. One hundred and twenty cavities were prepared in extracted bovine teeth with gingival wall located in dentine/cementum being randomly divided into four groups (n=30) according to the restorative techniques: group 1 - bulk insertion; group 2 - horizontal increments insertion; group 3 - oblique increments insertion and group 4 - mixed insertion. The eavities were restored with adhesive system (Prime & Bond 2.1 @) and composite resin (Surefil@). After the restoration had been polished, the teeth were submitted to a thermocycle proeess (5:t 22C and 55:t 22C during 1000 cycles) and properly impermeabilized, they were immersed in a dye solution of 2% Methylene Blue pH 7 for 4 hours. Following that proeess, the teeth were cut and evaluated for microleakage in gingival wall and restorative material interface by two examiners using a stereoseope magnifying glass (50x) with regard to previous criterion (0-4 seore). The Kruskal-Wallis test has showed no statistically significant difference in mieroleakage among different techniques in terms of 5% significance. No restorative technique was able to eliminate the mieroleakage in class 11 restorations with condensable composite resin in gingival margin located in dentine/cementum Mestrado Dentística Mestre em Clínica Odontológica |
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