title: Hard tissue loss at the cemento-enamel junction: a clinical study.
mesh_terms: D000328:Adult; D000368:Aged; D006801:Humans; D008875:Middle Aged; D014072:Tooth Abrasion / Q000209:etiology; D014077:Tooth Erosion; D014092:Tooth Root; D014099:Toothbrushing / Q000009:adverse effects*