Prettau Zirconia Implant Bridge: Prettau Case 1 Roxanne had a set of dentures made after her teeth were removed and she just could not tolerate them. The movement they had due to the poor fit, created sores and they were just too painful to wear. She went for months of her life with no teeth at all. She came to us and she wanted the best implant solution. We offered her the Prettau Zirconia Implant Bridge, and these are the beautiful results.