Diagnostic puzzle as to the cause of this vertical root fracture?
D005260:Female; D006801:Humans; D008875:Middle Aged; D010508:Periodontal Abscess / Q000209:etiology; D012389:Root Canal Obturation / Q000009:adverse effects; D014082:Tooth Fractures / Q000209:etiology; D014092:Tooth Root / Q000293:injuries*