[Management of difficult cases -2-].
D000328:Adult; D003751:Dental Fistula / Q000628:therapy; D003788:Dental Pulp Diseases / Q000628:therapy*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010510:Periodontal Diseases / Q000628:therapy*; D012390:Root Canal Therapy; D014082:Tooth Fractures / Q000628:therapy