Effect of smear layer on root demineralization adjacent to resin-modified glass ionomer

A. S. Al-Helal; S. R. Armstrong; X. J. Xie; J. S. Wefel

doi:10.1177/154405910308200214

Effect of smear layer on root demineralization adjacent to resin-modified glass ionomer

A. S. Al-Helal, S. R. Armstrong, X. J. Xie, J. S. Wefel

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

The cariostatic effect of resin-modified glass ionomer (RMGI) on secondary root caries is well-documented. However, this beneficial effect may be dependent upon the mode of cavity surface treatment. To investigate this relationship, we studied 4 cavity surface treatments prior to the placement of RMGI: no treatment (None), polyacrylic acid (PAA), phosphoric acid (H₃PO ₄), and Scotchbond Multi-Purpose adhesive (SMP) as a control. Specimens were aged for two weeks in synthetic saliva, thermocycled, and subjected to an artificial caries challenge (pH 4.4). Polarized light microscopy (PLM) and microradiography (MRG) showed significantly less demineralization with the H₃PO₄ cavity surface treatment as revealed by ANOVA and Tukey's multiple comparisons (p ≤ 0.05). Dentin fluoride profiles determined by electron probe microanalysis (EPMA) supported PLM and MRG findings. It may be concluded that removal of the smear layer with phosphoric acid provides significantly enhanced resistance to secondary root caries formation adjacent to RMGI restorations.

Original language	English (US)
Pages (from-to)	146-150
Number of pages	5
Journal	Journal of Dental Research
Volume	82
Issue number	2
DOIs	https://doi.org/10.1177/154405910308200214
State	Published - Feb 2003

Keywords

Demineralization
Fluoride
Glass ionomer
Root
Smear layer

ASJC Scopus subject areas

General Dentistry

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10.1177/154405910308200214

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title = "Effect of smear layer on root demineralization adjacent to resin-modified glass ionomer",

abstract = "The cariostatic effect of resin-modified glass ionomer (RMGI) on secondary root caries is well-documented. However, this beneficial effect may be dependent upon the mode of cavity surface treatment. To investigate this relationship, we studied 4 cavity surface treatments prior to the placement of RMGI: no treatment (None), polyacrylic acid (PAA), phosphoric acid (H3PO 4), and Scotchbond Multi-Purpose adhesive (SMP) as a control. Specimens were aged for two weeks in synthetic saliva, thermocycled, and subjected to an artificial caries challenge (pH 4.4). Polarized light microscopy (PLM) and microradiography (MRG) showed significantly less demineralization with the H3PO4 cavity surface treatment as revealed by ANOVA and Tukey's multiple comparisons (p ≤ 0.05). Dentin fluoride profiles determined by electron probe microanalysis (EPMA) supported PLM and MRG findings. It may be concluded that removal of the smear layer with phosphoric acid provides significantly enhanced resistance to secondary root caries formation adjacent to RMGI restorations.",

keywords = "Demineralization, Fluoride, Glass ionomer, Root, Smear layer",

author = "Al-Helal, {A. S.} and Armstrong, {S. R.} and Xie, {X. J.} and Wefel, {J. S.}",

year = "2003",

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doi = "10.1177/154405910308200214",

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AU - Al-Helal, A. S.

AU - Armstrong, S. R.

AU - Xie, X. J.

AU - Wefel, J. S.

PY - 2003/2

Y1 - 2003/2

N2 - The cariostatic effect of resin-modified glass ionomer (RMGI) on secondary root caries is well-documented. However, this beneficial effect may be dependent upon the mode of cavity surface treatment. To investigate this relationship, we studied 4 cavity surface treatments prior to the placement of RMGI: no treatment (None), polyacrylic acid (PAA), phosphoric acid (H3PO 4), and Scotchbond Multi-Purpose adhesive (SMP) as a control. Specimens were aged for two weeks in synthetic saliva, thermocycled, and subjected to an artificial caries challenge (pH 4.4). Polarized light microscopy (PLM) and microradiography (MRG) showed significantly less demineralization with the H3PO4 cavity surface treatment as revealed by ANOVA and Tukey's multiple comparisons (p ≤ 0.05). Dentin fluoride profiles determined by electron probe microanalysis (EPMA) supported PLM and MRG findings. It may be concluded that removal of the smear layer with phosphoric acid provides significantly enhanced resistance to secondary root caries formation adjacent to RMGI restorations.

AB - The cariostatic effect of resin-modified glass ionomer (RMGI) on secondary root caries is well-documented. However, this beneficial effect may be dependent upon the mode of cavity surface treatment. To investigate this relationship, we studied 4 cavity surface treatments prior to the placement of RMGI: no treatment (None), polyacrylic acid (PAA), phosphoric acid (H3PO 4), and Scotchbond Multi-Purpose adhesive (SMP) as a control. Specimens were aged for two weeks in synthetic saliva, thermocycled, and subjected to an artificial caries challenge (pH 4.4). Polarized light microscopy (PLM) and microradiography (MRG) showed significantly less demineralization with the H3PO4 cavity surface treatment as revealed by ANOVA and Tukey's multiple comparisons (p ≤ 0.05). Dentin fluoride profiles determined by electron probe microanalysis (EPMA) supported PLM and MRG findings. It may be concluded that removal of the smear layer with phosphoric acid provides significantly enhanced resistance to secondary root caries formation adjacent to RMGI restorations.

KW - Demineralization

KW - Fluoride

KW - Glass ionomer

KW - Root

KW - Smear layer

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Effect of smear layer on root demineralization adjacent to resin-modified glass ionomer

Abstract

Keywords

ASJC Scopus subject areas

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