Zinc phosphate cements: an evaluation of some factors influencing the lactic acid jet test erosion.
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.
Department of Biomaterials, Institute of Dental Surgery, London, UK.
J A
JA
Williams
R W
RW
Billington
G J
GJ
Pearson
D006358:Hot Temperature; D066298:In Vitro Techniques; D007773:Lactates; D019344:Lactic Acid; D008422:Materials Testing / Q000379:methods*; D012015:Reference Standards; D015036:Zinc Phosphate Cement
D007773:Lactates; D019344:Lactic Acid; D015036:Zinc Phosphate Cement