Phosphoric acid conditioning of teeth for pit and fissure sealants.
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Dental Enamel↗
Biomedical subjects
L C Chow
Publications and source records attributed to L C Chow.
Reaction of dicalcium phosphate dihydrate with fluoride.
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Calcium Phosphates↗
Formation of CaHPO4-2H2O in tooth enamel as an intermediate product in topical fluoride treatments.
Significant amounts of CaHPO4-2H2O (DCPD) were deposited in tooth enamel by pretreatment with a solution saturated with respect to DCPD. When these enamel samples were treated with a given fluoride solution, the fluoride uptake increased with increasing amounts of DCPD produced by the pretreatment. The interactions between enamel and acidic solutions to yield DCPD can be understood as dissolution-precipitation reactions and analyzed through the use of solubility phase diagrams.
Apatites↗
Formation of Ca HPO4-2H2O from enamel mineral and its relationship to caries mechanism.
Tooth enamel, when treated with dilute H3P94 solutions, dissolved incongruently with formation of large CaHPO4-2HO2O crystals. Equilibrated solutions were saturated with respect to Ca5(PO4)3OH, probably an impure, defective apatite. The CaHPO4-2H2O crystals formed at considerably higher pH values than expected becuase of enhanced solubility of the apatitic phase in enamel. Pyolysis of carious enamel revealed the presence of acidic calcium phosphate presumed to be CaHPO4-2H2O.
Calcium↗
Topical fluoridation of teeth before sealant application.
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Calcium Phosphates↗
An amazing sequence arrangement at the 5' ends of adenovirus 2 messenger RNA. 1977.
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Adenoviruses, Human↗