Mask Supply Canada is a proud distributor of Dent-X Canada Masks. Dent-X Canada is a Canadian owned and operated company, has held a Medical Device License for over 15 years and is ISO registered. All masks are tested to NIOSH standards and are proudly manufactured (not just packaged) right here in Ontario in one of three manufacturing plants. Their main operating plant and head quarters is located in Vaughan Ontario. They also have 2 additional plants located in 2 First Nations Communities providing much needed employment opportunities to First Nation’s peoples.