Apical periodontitis: a very prevalent problem.
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D001315:Australia / Q000453:epidemiology; D003786:Dental Pulp Cavity / Q000382:microbiology; D019232:Dental Restoration Failure; D006801:Humans; D010485:Periapical Periodontitis / Q000453:epidemiology / Q000209:etiology*; D015995:Prevalence; D012389:Root Canal Obturation / Q000009:adverse effects; D014481:United States / Q000453:epidemiology