Yes.
All of MRC's appliances, (TRAINER System™, MYOBRACE System™ and TMJ System™)
have been made from medical grade materials approved by USA and
European health agencies for use in the mouth. The CE certification and
FDA 510k in addition to other government approvals have been granted to
the Myofunctional Research Co. products.
Some allergy (Mucous) has been reported with a very small number
of hyper- allergenic patients. This stops after suspended use. No
reported problems with liability have occurred as these materials are
in very common use in baby's dummies and medical infusion tubes plus
many other medical applications. There have not been reported liability
problems with any of these materials.