• 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
 
 
Master's Dissertation
DOI
https://doi.org/10.11606/D.58.2020.tde-07102022-170230
Document
Author
Full name
Viviane de Oliveira Prado
Institute/School/College
Knowledge Area
Date of Defense
Published
Ribeirão Preto, 2020
Supervisor
Committee
Matsumoto, Mirian Aiko Nakane (President)
Gimenez, Carla Maria Melleiro
Rino Neto, José
Stuani, Maria Bernadete Sasso
Title in Portuguese
Liberação de Bisfenol A de sistemas adesivos resinosos ortodônticos na saliva de pacientes com disjuntor de Haas
Keywords in Portuguese
Bisfenol A
BPA
Compósitos ortodônticos
Disjuntor de Haas
Expansão rápida de maxila
Abstract in Portuguese
Introdução: O objetivo deste trabalho foi avaliar in vivo a liberação de Bisfenol A (BPA) do compósito ortodôntico (Transbond XT), bem como no adesivo ortodôntico para bandas (Transbond Plus Light Cure Band), ambos utilizados na cimentação do aparelho Disjuntor de Haas modificado, em crianças de 6 a 10 anos. Métodos: As amostras de saliva foram coletadas de pacientes que necessitavam de expansão rápida da maxila, utilizando o disjuntor de Haas, em 5 tempos diferentes: meia hora antes, 1 hora após, 24 horas, 1 semana, e por fim, 1 mês após a instalação do disjuntor. Resultados: As quantidades liberadas foram abaixo da média da Dose Diária Tolerável (TDI), que é de 0,05 µg, porém a quantidade de BPA liberada na saliva, uma hora após a instalação do disjuntor, foi significante, indicando aumento da quantidade de BPA no organismo das crianças. Conclusão: Houve aumento significativo de BPA na saliva, após a instalação dos disjuntores ortodônticos e a liberação na saliva foi maior 30 minutos após a instalação dos aparelhos. Os níveis salivares retornaram aos valores iniciais apenas após 30 dias.
Title in English
Bisphenol A release from orthodontic adhesive systems in the saliva of patients with Haas expander
Keywords in English
Bisphenol A
BPA
Haas expander
Orthodontic composites
Rapid maxillary expansion
Abstract in English
Introduction: The objective of this study was to evaluate in vivo the Bisphenol A (BPA) level in patients' saliva release from the orthodontic composite (Transbond XT) and the orthodontic adhesive for bands (Transbond Plus Light Cure Band), both used in the cementation of the modified Haas expander device in children aged 6 to 10 years. Methods: Saliva fangs were collected from patients who needed to make a rapid maxillary expansion using the Haas expander, at 5 different times: 1 hour before bonding, half hour after, 24 hours, 1 week, and finally, 1 month after bonding. Results: The quantities released were below the average of the Tolerable Daily Dose (TDI), which is 0.05 µg, but the increases, mainly in T0 (half hour before) and T1 (one hour later, were different candidates, suggesting an increase in quantity of Bisphenol A in the body of patients. Conclusions: Currently, the literature is increasingly highlighting the toxic potential of Bisphenol A, even in low doses, and especially in the body of children and children. For this reason, more studies are being examined to arrive at a definitive conclusion about what Bisphenol A can actually cause in the human being.
 
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
2022-12-07
 
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 © 2001-2024. All rights reserved.