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Characterization of white spot lesions formed on human enamel under microcosm biofilm for different experimental periods
Levy, Flávia Mauad; Braga, Aline Silva; Pelá, Vinícius Taioqui; Lavender, Stacey; Zhang, Dennis; Pilch, Shira; Malheiros, Zilson; Stewart, Bernal; Magalhães, Ana Carolina; Buzalaf, Marília Afonso Rabelo.
Afiliação
  • Levy, Flávia Mauad; Universidade de São Paulo. Faculdade de Odontologia de Bauru. Departamento de Ciências Biológicas. Bauru. BR
  • Braga, Aline Silva; Universidade de São Paulo. Faculdade de Odontologia de Bauru. Departamento de Ciências Biológicas. Bauru. BR
  • Pelá, Vinícius Taioqui; Universidade de São Paulo. Faculdade de Odontologia de Bauru. Departamento de Ciências Biológicas. Bauru. BR
  • Lavender, Stacey; Colgate Palmolive Company. Global Technology Center. Piscataway. US
  • Zhang, Dennis; Colgate Palmolive Company. Global Technology Center. Piscataway. US
  • Pilch, Shira; Colgate Palmolive Company. Global Technology Center. Piscataway. US
  • Malheiros, Zilson; Colgate Palmolive Company. Global Technology Center. Piscataway. US
  • Stewart, Bernal; Colgate Palmolive Company. Global Technology Center. Piscataway. US
  • Magalhães, Ana Carolina; Universidade de São Paulo. Faculdade de Odontologia de Bauru. Departamento de Ciências Biológicas. Bauru. BR
  • Buzalaf, Marília Afonso Rabelo; Universidade de São Paulo. Faculdade de Odontologia de Bauru. Departamento de Ciências Biológicas. Bauru. BR
J. appl. oral sci ; J. appl. oral sci;30: e20210560, 2022. tab, graf
Article em En | LILACS-Express | LILACS | ID: biblio-1365008
Biblioteca responsável: BR1.1
ABSTRACT
Abstract The initial characteristics of white spot lesion (WSLs), such as the degree of integrated mineral loss (ΔZ), depth and pattern of mineral distribution, have an impact on further demineralization and remineralization. However, these lesion parameters have not been evaluated in WSLs produced from microcosm biofilms.

Objective:

This study characterized artificial white spot lesions produced on human enamel under microcosm biofilm for different experimental periods.

Methodology:

In total, 100 human enamel specimens (4x4mm) were assigned to 5 distinct groups (n=20/group) differing according to the period of biofilm formation (2, 4, 6, 8 or 10 days). Microcosm biofilm was produced on the specimens from a mixture of human and McBain saliva at the first 8h. Enamel samples were then exposed to McBain saliva containing 0.2% sucrose. WSLs formed were characterized by quantitative light-induced fluorescence (QLF) and transverse microradiography (TMR). Data were analyzed by ANOVA/Tukey or Kruskal-Wallis/Dunn tests (p<0.05).

Results:

A clear time-response pattern was observed for both analyses, but TMR was able to better discriminate among the lesions. Regarding QLF analysis, median (95%CI; %) changes in fluorescence ∆Z were -7.74(-7.74-6.45)a, -8.52(-8.75-8.00)ab, -9.17(-10.00-8.71)bc, -9.58(-10.53-8.99)bc and -10.01(-11.44-9.72)c for 2, 4, 6, 8, and 10 days, respectively. For TMR, median (95%CI; vol%.µm) ∆Z were 1410(1299-1479)a, 2420(2327-2604)ab, 2775(2573-2899)bc, 3305(3192-3406)cd and 4330(3972-4465)d, whereas mean (SD; µm) lesion depth were 53.7(12.3)a, 71.4(12.0)a, 103.8(24.8)b, 130.5(27.2)bc, 167.2(39.3)c for 2, 4, 6, 8 and 10 days, respectively.

Conclusion:

The progression of WSLs formed on human enamel under microcosm biofilm can be characterized over 2-10 days, both by QLF and TMR analyses, although the latter provides better discrimination among the lesions.
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Texto completo: 1 Coleções: 01-internacional Base de dados: LILACS Idioma: En Revista: J. appl. oral sci Assunto da revista: ODONTOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Brasil / Estados Unidos País de publicação: Brasil
Texto completo
Adicionar na Minha BVS
Imprimir
XML
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: LILACS Idioma: En Revista: J. appl. oral sci Assunto da revista: ODONTOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Brasil / Estados Unidos País de publicação: Brasil