title: The long term response to the treatment of an unusual periodontal lesion--a case report.
mesh_terms: D001861:Bone Regeneration; D002648:Child; D004846:Epithelial Attachment; D005500:Follow-Up Studies; D006801:Humans; D009967:Orthodontic Appliances / Q000009:adverse effects*; D010510:Periodontal Diseases / Q000209:etiology*