| 摘要 |
<p>The present invention relates to an arch-shaped mouth guard that can be detachably put on teeth in the upper jaw or lower jaw, wherein the mouth guard includes an indicator inside a main body thereof, which lets a user know the time to repair or replace the mouth guard resulting from abrasion of morsal surfaces. The mouth guard provides a means for notifying a user that the mouth guard needs to be repaired or replaced when an abrasion degree of a morsal surface reaches within a predetermined range. Therefore, the mouth guard can be repaired or replaced when it is in a proper range of abrasion which does not influence on the effect of the mouth guard. In addition, the mouth guard has superior durability and suitability for wearing, can protect teeth against teeth grinding or strong biting force when the teeth are gritted, and minimize burden applied to mandibles and teeth.</p> |
