Bruxism Bruxism (teeth grinding) can cause moderate to severe long-term damage to teeth. Constant grinding wears down the surface of the tooth, exposing the soft dentin beneath the enamel. Some of the damage that can occur includes: • Chipped teeth • Tooth flattening and tooth wear • Cracked tooth enamel • Cracked, loose or broken fillings • Tooth loss • Gum recession •