Zinc phosphate cements: an evaluation of some factors influencing the lactic acid jet test erosion.
basic_science · Level V
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Abstract
The lactic acid jet test was used to measure erosion rates of eight commercial zinc phosphate cements at 23 and 37 degrees C after 24 h and 2 months. Rates exceeded the ISO 9917 published limit of 0.1 mm/h when tested according to this specification (23 degrees C, 24 h), suggesting the limit should be increased. Erosion was measured by both weight loss and depth change. At 24 h erosion decreased as temperature increased, whereas after 2 months temperature had no significant effect. No trend was seen with increasing specimen maturity. Stannous fluoride may increase erosion resistance.
Medical subject headings
- Materials Testing
- Zinc Phosphate Cement