Influence of the organic matrix on root dentine erosion by citric acid

A. T. Hara, M. Ando, J. A. Cury, M. C. Serra, C. González-Cabezas, D. T. Zero

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

This investigation was conducted in an attempt to clarify the role of the organic matrix in bovine dentine demineralisation by 1% citric acid. Dentine slabs (n = 15) were treated for 2 min with 10% sodium hypochlorite (NaOCl, a strong protein solvent), 2% glutaraldehyde (GDA, a protein fixative) or deionised water (DIW, as negative control) prior to each of 5 demineralisation periods of 30 min. The mineral loss (ΔZ), lesion depth (LD) and surface loss (SL) were determined after each period of demineralisation, by transverse microradiography. The NaOCl-treated group showed higher ΔZ and LD than the GDA- and DIW-treated groups. No differences between GDA and DIW groups were found. The AZ and LD profiles were explained by quadratic fits (r2> 0.80; p = 0.001) in all groups. SL was detected only in the NaOCl-treated group. The data suggested that the maintenance of the organic matrix in the lesion might be important to reduce the erosion progression rate.

Original languageEnglish (US)
Pages (from-to)134-138
Number of pages5
JournalCaries research
Volume39
Issue number2
DOIs
StatePublished - Mar 1 2005

Fingerprint

Dentin
Citric Acid
Microradiography
Sodium Hypochlorite
Fixatives
Glutaral
Minerals
Proteins
Maintenance
Water

Keywords

  • Demineralisation
  • Erosion
  • Organic matrix
  • Root dentine

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Influence of the organic matrix on root dentine erosion by citric acid. / Hara, A. T.; Ando, M.; Cury, J. A.; Serra, M. C.; González-Cabezas, C.; Zero, D. T.

In: Caries research, Vol. 39, No. 2, 01.03.2005, p. 134-138.

Research output: Contribution to journalArticle

Hara, A. T. ; Ando, M. ; Cury, J. A. ; Serra, M. C. ; González-Cabezas, C. ; Zero, D. T. / Influence of the organic matrix on root dentine erosion by citric acid. In: Caries research. 2005 ; Vol. 39, No. 2. pp. 134-138.
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