Why I cannot use the N2-Sargenti method.
D005557:Formaldehyde; D006801:Humans; D007880:Legislation, Drug; D009811:Odontometry / Q000379:methods*; D010519:Periodontium / Q000601:surgery; D012387:Root Canal Filling Materials / Q000009:adverse effects; D012390:Root Canal Therapy / Q000295:instrumentation / Q000706:statistics & numerical data
D012387:Root Canal Filling Materials; D005557:Formaldehyde