| 摘要 |
The present invention relates to a mouth gag and, more specifically, to a mouth gag used in treatment of dental diseases and teeth whitening, and reducing fatigue of a user. The mouth gag comprises a molar coupling part bitten by molars; an upper lip drawing plate located on the upper part of the molar coupling part; and a lower lip drawing plate located on the lower part of the molar coupling part, wherein the width of the lower lip drawing plate is lower than the width of the upper lip drawing plate. |
