Abstract
Mixing of gypsum products with disinfectant solutions is a handy disinfecting method for stone models to be applied in daily practice.The effect of this method on some properties of stone models was examined.A type 2 plaster, a type 3 stone and a type 4 stone, high-strength were mixed with the solutions containing 0.1 and 0.5% sodium hypochlorite, 1, 000 and 10, 000ppm sodium dichloroisocyanurate(TBS), 0.1% povidone-iodine and 2% alkaline glutaraldehyde.Setting time, setting expansion, tensile and compressive strengths, surface roughness and scratch resistance were measured.The solutions with 10, 000ppm TBS and glutaraldehyde degraded the properties of the stone models.The reverse effect was largely noted on the type 2 plaster.Mixing with the other solutions was clinically acceptable.
