scholarly journals Chemical Changes of Flattened Enamel Surfaces with in Vitro Weak Acid Demineralization

1971 ◽  
Vol 50 (6) ◽  
pp. 1589-1593 ◽  
Author(s):  
David J. Krutchkoff ◽  
Nathaniel H. Rowe
Keyword(s):  
Surface Chemistry ◽  
Weak Acid ◽  
Internal Reflection ◽  
Reflection Spectroscopy ◽  
Chemical Changes ◽  
Internal Reflection Spectroscopy

Infrared internal reflection spectroscopy (IRS) was used to study changes in surface chemistry of enamel after in vitro weak acid demineralization. Hypotheses that relate previous histomorphologic observations to current IRS findings are discussed.

scholarly journals Chemical Nature of Remineralized Flattened Enamel Surfaces

1971 ◽  
Vol 50 (6) ◽  
pp. 1621-1625 ◽  
Author(s):  
David J. Krutchkoff ◽  
Nathaniel H. Rowe
Keyword(s):  
Calcium Phosphate ◽  
Calcium Fluoride ◽  
Chemical Nature ◽  
Internal Reflection ◽  
Enamel Surface ◽  
Reflection Spectroscopy ◽  
Chemical Changes ◽  
Amorphous Phosphate ◽  
Internal Reflection Spectroscopy

lnfrared internal reflection spectroscopy (IRS) was used to investigate chemical changes of enamel surface during in vitro remineralization. Specimens were demineralized and exposed either to calcium phosphate-fluoride solutions or to acidulated fluorophosphate. The former showed amorphous phosphate remineralization, and the latter showed surface precipitate interpreted to be calcium fluoride. The significance of previous demineralization time to both forms of remineralization is discussed.

Effect of Prior Acid Etch on Rate of Sn3F3PO4 Formation Subsequent to Topical Application of SnF2

1975 ◽  
Vol 54 (6) ◽  
pp. 1154-1160 ◽  
Author(s):  
William D. Nordquist ◽  
David J. Krutchkoff ◽  
Stephen H.Y. Wei
Keyword(s):  
Light Microscopy ◽  
Topical Application ◽  
Internal Reflection ◽  
Reflection Spectroscopy ◽  
Reaction Surface ◽  
Acid Etch ◽  
Internal Reflection Spectroscopy

The effect of prior acid etch on the rate of Sn3F3PO4 formation subsequent to in vitro SnF2 interaction with human dental mineral has been investigated using light microscopy, surface replicas, and internal reflection spectroscopy. Results showed that Sn3F3PO4 forms more rapidly on etched surfaces as compared with nonetched controls. The observed accelerated rate was attributed to increased reaction surface provided by prior acid etch plus a rougher surface conducive to crystal nidus formation.

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