Participants were randomly assigned to receive either a Hawley retainer (HR) or a clear overlay retainer (COR). The HR was composed of a 2 mm-thick acrylic resin base plate, one-arm clasps with 0.9 mm ...

Align Technology, Inc. has announced the launch of Vivera retainers -- clear retainers made from the same technology as Invisalign aligners. These subscription-based retainers will be delivered to ...