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Effect of tricalcium silicate (Ca3 SiO5 ) bioactive material on reducing enamel demineralization: An in vitro pH-cycling study

Wang, Yueyue ; Li, Xiaoke ; Chang, Jiang ; Wu, Chengtie ; Deng, Yan

Journal of dentistry, 2012-12, Vol.40 (12), p.1119-1126 [Periódico revisado por pares]

Oxford: Elsevier Ltd

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  • Título:
    Effect of tricalcium silicate (Ca3 SiO5 ) bioactive material on reducing enamel demineralization: An in vitro pH-cycling study
  • Autor: Wang, Yueyue ; Li, Xiaoke ; Chang, Jiang ; Wu, Chengtie ; Deng, Yan
  • Assuntos: Acids ; Atomic force microscopy ; Bioactivity ; Biocompatibility ; Citric acid ; Demineralization ; Demineralizing ; Dentistry ; Enamel ; Enamels ; Fluorides ; Hydroxyapatite ; Hypotheses ; Microhardness ; Painted ; Remineralization ; Scanning electron microscopy ; Slurries ; Tricalcium silicate
  • É parte de: Journal of dentistry, 2012-12, Vol.40 (12), p.1119-1126
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
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  • Descrição: Abstract Objectives The aim of this study was to investigate the effect of Ca3 SiO5 on reducing enamel demineralization under pH-cycling conditions. Methods Forty bovine enamel samples were treated under four conditions: group 1, double distilled water (negative control); group 2, 1000 ppm F (as NaF, positive control); group 3, Ca3 SiO5 slurry; and group 4, Ca3 SiO5 –F slurry (Ca3 SiO5 with 1000 ppm F aq.). All the specimens were treated with treatment materials 4 times each day. Samples in groups 1 and 2 were soaked in test solutions for 2 min and samples in groups 3 and 4 were painted in treatment slurry for 2 min. At times between treatments, they were immersed in citric acid solution 3 times a day and 15 s each time. All the procedures were repeated for 7 days. Knoop microhardness, scanning electron microscopy (SEM), X-ray diffraction (XRD) and atom force microscopy (AFM) were used to examine samples. Results After treatment for 7 days, enamels in all the groups were significantly softened. The extents of microhardness reduction were 52.3%, 28.5%, 28.5% and 20.2% for groups 1, 2, 3 and 4, respectively. Samples in the negative control group showed a typical acid etched pattern while enamels in other groups were relatively compact. There was no significant difference between samples treated with Ca3 SiO5 and F. The combination of Ca3 SiO5 with F showed the best effect on reducing enamel demineralization. Conclusions Ca3 SiO5 is an effective material against enamel demineralization alone but in combination with F a better anti-demineralization effect may be obtained.
  • Editor: Oxford: Elsevier Ltd
  • Idioma: Inglês;Persa
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