sodium monofluorophosphate

sodium monofluorophosphate (mon´ōflr´ōfos´fāt),

n a form of fluoride added to oral care products at a strength of 1500 ppm, which is considered extra-strength.

sodium perborate

n an oxygen-liberating antiseptic that has been used in the treatment of necrotizing ulcerative gingivitis and other forms of gingival inflammation. Prolonged or indiscriminate use has produced burns of the oral mucosa and hyperplasia of the filiform papillae of the tongue (black hairy tongue). Also used to bleach pulpless teeth.

sodium pump,

n a mechanism for transporting sodium ions across cell membranes against an opposing concentration gradient.

sodium thiosulfate

n a powdered chemical, commonly called
hypo, that is an ingredient of the fixing solution used in film processing. It clears the film of undeveloped silver halide crystals.