Profile: Yamahachi Dental Mfg., Co. develops high quality dental alloys & acrylic as well as artificial teeth and dentures. We are an ISO 9001 certified company. Our product blue sine is a dental paste burnishing polisher. Basis is a heat cured acrylic resin for denture bases, which is strong and exceptionally durable. An adaptable and aesthetically pleasing denture is achievable without any air bubble formation or shrinkage.