The 'T​heroux Retainer' is a pressure-formed appliance, used as a space maintainer/retainer. It's particularly useful for when molars have short crown height making retention difficult with metal clasps

   It can also be used for maintaining arch-width following expansion treatment, whilst awaiting pre-molars to erupt...

   Essix Retainer....

   Bonded wire retainer with positioning jig available in flat wire...