title: Focal root resorption lacunae causing retention of subgingival plaque in periodontal pockets.
mesh_terms: D000208:Acute Disease; D000328:Adult; D010520:Aggressive Periodontitis / Q000473:pathology; D002648:Child; D003773:Dental Plaque / Q000209:etiology* / Q000473:pathology; D006801:Humans; D008297:Male; D008855:Microscopy, Electron, Scanning; D010514:Periodontal Pocket / Q000150:complications* / Q000473:pathology; D010518:Periodontitis / Q000150:complications* / Q000473:pathology; D014070:Tooth / Q000648:ultrastructure; D014091:Tooth Resorption / Q000150:complications* / Q000473:pathology