Influence of hydrofluoric acid concentration on the flexural strength of a feldspathic ceramic

Andressa B. Venturini, Catina Prochnow, Liliana G. May, Marco C. Bottino, Luiz Felipe Valandro

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This study evaluated the effects of etching with increasing hydrofluoric (HF) acid concentrations on the roughness and flexural strength of a feldspathic ceramic. One hundred and fifty ceramic specimens (14×4×1.2mm2) were produced from ceramic blocks (VitaBlocks Mark II). All specimens were polished, chamfered and sonically cleaned in isopropyl alcohol. Specimens were randomly divided into 5 groups (n=30): SC (control) no ceramic surface etching; HF1, HF3, HF5 and HF10 ceramic surface etching for 60s with 1%, 3%, 5% and 10% HF acid concentrations, respectively. Profilometry was performed in all specimens to evaluate roughness prior to flexural strength testing. Data were analyzed using one-way ANOVA and Tukey[U+05F3]s test (α=0.05). Weibull module (m) and characteristic stress (σc) were also determined. HF acid etching, regardless of the concentration used, led to significantly rougher surfaces than the control (p

Original languageEnglish (US)
Pages (from-to)241-248
Number of pages8
JournalJournal of the Mechanical Behavior of Biomedical Materials
Volume48
DOIs
StatePublished - Aug 1 2015
Externally publishedYes

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Hydrofluoric Acid
Hydrofluoric acid
Bending strength
Etching
Surface roughness
Profilometry
2-Propanol
Analysis of variance (ANOVA)
Alcohols
Testing

Keywords

  • Acid etching
  • Ceramic
  • Strength
  • Surface treatment

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering
  • Mechanics of Materials

Cite this

Influence of hydrofluoric acid concentration on the flexural strength of a feldspathic ceramic. / Venturini, Andressa B.; Prochnow, Catina; May, Liliana G.; Bottino, Marco C.; Felipe Valandro, Luiz.

In: Journal of the Mechanical Behavior of Biomedical Materials, Vol. 48, 01.08.2015, p. 241-248.

Research output: Contribution to journalArticle

Venturini, Andressa B. ; Prochnow, Catina ; May, Liliana G. ; Bottino, Marco C. ; Felipe Valandro, Luiz. / Influence of hydrofluoric acid concentration on the flexural strength of a feldspathic ceramic. In: Journal of the Mechanical Behavior of Biomedical Materials. 2015 ; Vol. 48. pp. 241-248.
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