Susceptibility of bovine dental enamel with initial erosion lesion to new erosive challenges

Autor(es)

de Oliveira, Gabriela Cristina ; Genovez Tereza, Guida Paola ; Boteon, Ana Paula ; Ferrairo, Brunna Mota ; Pinto Goncalves, Priscilla Santana ; da Silva, Thiago Cruvinel ; Honorio, Heitor Marques ; Rios, Daniela

• Tipo de documento: Artigo Científico
• Fonte: PLoS One; v. 12, n. 8 AUG 17 2017.
• Citações Web of Science: 4

Resumo

This in vitro study evaluated the impact of initial erosion on the susceptibility of enamel to further erosive challenge. Thirty bovine enamel blocks were selected by surface hardness and randomized into two groups (n = 15): GC-group composed by enamel blocks without erosion lesion and GT-group composed by enamel blocks with initial erosion lesion. The baseline profile of each block was determined using the profilometer. The initial erosion was produced by immersing the blocks into HCl 0.01 M, pH 2.3 for 30 seconds, under stirring. The erosive cycling consisted of blocks immersion in hydrochloric acid (0.01 M, pH 2.3) for 2 minutes, followed by immersion in artificial saliva for 120 minutes. This procedure was repeated 4 times a day for 5 days, and the blocks were kept in artificial saliva overnight. After erosive cycling, final profile measurement was performed. Profilometry measured the enamel loss by the superposition of initial and final profiles. Data were analyzed by t-test (p<0.05). The result showed no statistically significant difference between groups (GS = 14.60 +/- 2.86 and GE =.14.69 +/- 2.21 mu m). The presence of initial erosion on bovine dental enamel does not enhance its susceptibility to new erosive challenges. (AU)

• Processo FAPESP: 11/12395-4 - Efeito da aplicação de infiltrante sobre lesões iniciais de erosão e posterior submissão a desafio erosivo: estudo in vitro
• Beneficiário: Ana Paula Boteon
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 11/11814-3 - Efeito da aplicação de materiais resinosos fluidos sobre o esmalte hígido submetido a ciclagem erosiva in vitro
• Beneficiário: Brunna Mota Ferrairo
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 11/16208-4 - Uso de infiltrante sobre esmalte hígido e com lesão inicial de erosão submetido a desafio erosivo in vitro
• Beneficiário: Gabriela Cristina de Oliveira
• Modalidade de apoio: Bolsas no Brasil - Mestrado