This 58-year-old male recently came into my practice for a restorative evaluation. He has a history of nocturnal bruxism and also has evidence of some erosive process that is affecting the facial surfaces of his teeth. If you note where the lesions are present, mostly on the facial surfaces and more cervical, that would indicate an extrinsic acid source. There is no palatal erosive pattern that would indicate either GERD or an eating disorder. He denies fruit mulling, fruit sucking, soda swishing, or any other common cause of erosion. I am out of ideas for the causes of his erosion; in addition I'd love to know what you all think about the very prominent texture of his maxillary anteriors. Is it related to his erosion? I need your help here, I really don't know what is happening, and all ideas are welcome!