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OBJECTIVE To describe the dentin surface morphology of abrasion/erosion lesions and to chemically characterize in vivo samples of sclerotic dentin. METHODS Baseline polyvinylsiloxane impressions of eight in vivo caries-free lesions were taken. Dentin was collected from retention grooves for FTIR photoacoustic spectroscopic analysis. The cavity preparation was etched for 30 seconds with 37% phosphoric acid, rinsed, and dried. Impressions were taken of the etched surfaces. Epoxy resin dies were made of baseline and etched impressions, sputter-coated and examined at x1000 with the SEM. RESULTS Lateral dentin tubule orientation was observed at gingival margins and on occlusal walls. Open cross-sectional tubules were seen at the depth of the groove. The mineral/protein ratio in the FTIR/PAS spectra of in vivo unetched sclerotic dentin samples suggested an increased mineral content.
J M Mixson, and
P Spencer, and
D L Moore, and
R P Chappell, and
S Adams
April 1996,
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J M Mixson, and
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D L Moore, and
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S Adams
January 2005,
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J M Mixson, and
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August 1982,
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J M Mixson, and
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J M Mixson, and
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J M Mixson, and
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October 1969,
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J M Mixson, and
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J M Mixson, and
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J M Mixson, and
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January 1985,
Hellenika stomatologika chronika. Hellenic stomatological annals,
J M Mixson, and
P Spencer, and
D L Moore, and
R P Chappell, and
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January 1987,
RGO,
