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Master's Dissertation
DOI
https://doi.org/10.11606/D.58.2020.tde-07102022-163615
Document
Author
Full name
Paôla Caroline da Silva Mira
Institute/School/College
Knowledge Area
Date of Defense
Published
Ribeirão Preto, 2020
Supervisor
Committee
Stuani, Maria Bernadete Sasso (President)
Andrade, Denise de
Matsumoto, Mirian Aiko Nakane
Menezes, Luciane Macedo de
Title in Portuguese
Colonização de bactérias periodontopatogênicas associadas ao aparelho ortodôntico fixo, em adolescentes
Keywords in Portuguese
Adolescentes
Aparelho fixo ortodôntico
Doença periodontal
Microbiota bucal
Tratamento ortodôntico
Abstract in Portuguese
Introdução: O surgimento de alterações periodontais ainda é uma problemática, durante o tratamento ortodôntico e podem alterar a microbiota bucal qualitativa e quantitativamente. Objetivo: Avaliar as alterações nos níveis de diferentes microrganismos envolvidos, direta ou indiretamente, na doença periodontal, por meio da saliva de pacientes adolescentes sob tratamento ortodôntico. Materiais e Método: Amostras de saliva foram coletadas antes e quinze dias após a instalação de aparelho fixo em 21 pacientes sob tratamento ortodôntico. Foi avaliado nos níveis salivares de 40 espécies de microrganismos dos complexos roxo, verde, laranja, vermelho e "outras espécies", por meio da técnica de biologia molecular checkerboard DNA-DNA hybridization. Os resultados foram submetidos aos testes de Wald-Type Statistic (WTS) e ANOVA-Type Statistic (ATS), e as diferenças foram consideradas significantes para valores de p <0,05. Resultados: 37 das 40 espécies investigadas foram encontradas em quantidade significativamente após 15 dias da instalação do aparelho ortodôntico. Conclusão: O aparelho ortodôntico fixo aumentou, significativamente, os níveis salivares totais de microrganismos, após 15 dias da instalação, dentre eles bactérias envolvidas direta ou indiretamente com a doença periodontal.
Title in English
Periodontal pathogen bacterial colonization with fixed orthodhontic appliances, in adolescents
Keywords in English
Adolescents
Fixed orthodontic appliance
Oral microbiota
Orthodontic treatment
Periodontal disease
Abstract in English
Introduction: The appearance of periodontal changes is still a problem, during orthodontic treatment and can change the oral microbiota qualitatively and quantitatively. Objective: To analyse the changes in the levels of different microorganisms involved, directly or indirectly, in periodontal disease, through the saliva of adolescent patients undergoing orthodontic treatment. Materials and Method: Saliva samples were collected before and fifteen days after the installation of a fixed appliance, in 21 patients undergoing orthodontic treatment. It was evaluated at the salivary levels of 40 species of microorganisms from the purple, green, orange, red and "other species" complexes, using the DNA-DNA hybridization checkerboard molecular biology technique. The results were submitted to Wald-Type Statistic (WTS) and ANOVA-Type Statistic (ATS) tests, and the differences were considered significant for p values <0.05. Results: 37 of the 40 species investigated were found in significant numbers 15 days after the installation of the orthodontic appliance. Conclusion: The fixed orthodontic appliance significantly increased the total salivary levels of microorganisms, 15 days after installation, including bacteria directly or indirectly involved with periodontal disease.
 
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Publishing Date
2022-11-18
 
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