All contestants are required to wear a mouthpiece during competition. The mouthpiece is subject to examination and approval by the attending physician. The round cannot begin without the mouthpiece. If the mouthpiece is dislodged during competition, the referee will call time and have the mouthpiece cleaned and replaced at the first opportune moment, without interfering with the immediate action. The referee may deduct points if it is judged the mouthpiece is being purposely spit out. It is recommended that each contestant have a spare mouthpiece in the event the one he/she is wearing is broken.
S.C. Code Regs. § 20-27.07