title: Self-inflicted periodontal injury.
mesh_terms: D002648:Child; D005260:Female; D005547:Foreign Bodies / Q000209:etiology*; D005881:Gingiva; D005891:Gingivitis / Q000209:etiology; D006197:Hair; D006801:Humans; D010510:Periodontal Diseases / Q000209:etiology*; D010514:Periodontal Pocket / Q000209:etiology; D012652:Self Mutilation / Q000150:complications*