PubMed Health⌕ Search

Biomedical subjects

E J Edmonds

Publications and source records attributed to E J Edmonds.

At least 19 recordsLinked to original sources
PubMed1978

Enamel solubility reduction by acidulated phosphate-fluoride (APF) treatment.

The enamel solubility reducing (ESR) potential of acidulated phosphate-fluoride (APF) solutions containing varying amounts of F was studied. Commercial APF (1.23% F, pH 3.0) reduced solubility by about 80%. Fivefold dilutions of this APF were made with either phosphoric acid or water without significant effect on ESR potential. Further dilution to 0.12% F significantly decreased effectiveness. Commercially available APF products (1.23%) can be diluted several-fold with distilled water in the dental office without significant loss of ability to reduce the solubility of enamel.

Acidulated Phosphate Fluoride↗
PubMed1978

Effect of fluoride concentration on rehardening of enamel by a saliva substitute.

An evaluation was made of the effect of different concentrations of F on the ability of OraLube, a saliva substitute developed by the Veterans Administration designed for use by xerostomic patients, to reharden enamel surfaces. Test preparations contained either 0, 1.0, 2.0, 3.0, 4.0 or 5.0 ppm and groups of softened enamel surfaces were treated with these solutions for 30 minutes. Treatment with saliva substitute containing no F did not significantly alter the hardness of enamel surfaces. Including 1.0 ppm F in the formula induced a rehardening of about 5 per cent; 2.0 ppm F solution rehardened at a 12.5 per cent rate. Additional F up to 5.0 ppm did not increase rehardening significantly. The inclusion of 2.0 ppm F in OraLube assures that, in addition to its ability to relieve intraoral soft tissue problems associated with xerostomia, an optimal rehardening potential is provided.

Calcium↗
PubMed1977

Fluoride levels in human parotid saliva following ingestion of fluoride compounds of varying solubility.

Healthy dental students received oral doses of 10.0 mg F daily in the form of compounds of widely varying solubilities. Parotid saliva F concentration and urinary F excretion were highest with NaF, Na2PO3F, and SnF2, lowest with CaF2, and intermediate with AlF3. Solubility of the ingested fluoride compound was a controlling factor in the amount of F excreted in the urine, the peak F concentration reached in parotid saliva, and the duration of a significant elevation in salivary F.

Absorption↗
PubMed1975

Failure of environmental lighting to influence dental caries rate.

Two experiments involving littermate cotton rats were conducted to determine the effect of cool-white fluorescent versus artificial sunlight environments on caries incidence. There were no significant differences in either the incidence or extent of caries associated with the different types of lighting. This contradicts our previous observations (1) with this species using identical experimentation and calls for a retraction. It is suggested that the difference is due primarily to the application of an inappropriate statistical approach in the earlier work.

Animals↗