The new and improved mouth guard of the invention comprises a flexible mouth guard having a channel for one's teeth and an integral flexible bubble that protrudes from the upper or lower front teeth. The bubble is positioned around and under the upper two to four front teeth or around and above the lower two to four front teeth. The flexible bubble preferably of flexible polymer or plastic material prevents the upper and lower posterior teeth from engaging thereby preventing the clenching and grinding of bruxism. The multiple bubbles absorb shock and assists in preventing trauma and dental issues.