Describe how fluoride works to prevent dental caries.
What will be an ideal response?
Fluoride works in several ways to prevent caries. During the development of teeth and bones, fluoride forms hydroxyfluorapatite crystals. These crystals provide greater resistance (than typical hydroxyapatite crystals) to bacteria and acids in the mouth that can erode tooth enamel. Fluoride in the blood contributes to fluoride in the saliva, which promotes the remineralization of enamel lesions and reduces the net loss of minerals from tooth enamel.
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Patients taking the NRTI zidovudine should be told to
a. take it on an empty stomach. b. take it 2 hours before or 3 hours after a meal. c. avoid taking it with a high-fat meal. d. avoid magnesium supplements while taking it.
What is the name given to the ingestion of nonnutritive substances?
a. Pica b. Goiter c. Tetany d. Hemosiderosis e. Metallothionein
We need a fresh supply of nonessential amino acids daily
a. True b. False Indicate whether the statement is true or false
Another term for heart disease is:
1.coronary heart disease. 2.atherosclerosis. 3.plaque. 4.cardiovascular disease.