<strong>Mold Makers: </strong>Dental assistant student Keeley Kroeker, left, gets assistance from her instructor Patricia Stoness, centre, during a mold making lab at SAIT in Calgary on Thursday, Feb. 16, 2017. The mold uses alginate to make a preliminary impression that can be used to make whitening trays, stone models, and dentures. (Photo by Amanda Richter/The Press)
