Q. Hi, Should you be able to see the margin where the lumineer stop underneath the gumline? If this shows, does that mean that it wasn’t properly placed, and what can be done about it? Crest Prohealth mouthwash has been known to brown the natural teeth, will it also brown or stain the lumineers, as well? Can a medium bristle toothbrush be used to brush your lumineers with, or will this damage them, making ridges in them or dulling the glaze on them? Lastly, can you go to any dentist to get the lumineers cleaned, although that dentist does not specialize nor place any lumineers on his patients, or would it be wiser to go to a cosmetic dentist who does lumineers? Thanks in advance