Coltene - Bite-Wafers Non-Laminated Singles 36/Box Extra-Hard GreenProduces detailed registrations Aluminum stops patients from biting through the material Non brittle Softens easily in warm water Hygenic Bite Wafers are U shaped wax materials that offer accuracy and improved retention. These bite masks include a thin aluminum foil in their two layers while getting rid of bite throughs. Bite Wafers have an extra hard thickness and avoid shattering in cold temperatures.