PROTECT YOUR TEETH AND JAWS AGAINST NIGHT TIME GRINDING AND CLENCHING Teeth grinding, or bruxing, is another common symptom associated with mouth breathing and then exacerbated by stress or nervous tension. This grinding can cause damage to the teeth including visible enamel wearing, tooth cracking or loose teeth. While the entire Myosa® range will offer some protection against the damage caused by teeth grinding, the Myosa® for Teeth Grinders is designed specifically for this purpose and provides a protective barrier between the teeth. Intended to wear with use, these appliances can be easily replaced to prevent damage to the teeth.