title: Facial emphysema caused by hydrogen peroxide irrigation: report of a case.
mesh_terms: D000328:Adult; D004646:Emphysema / Q000209:etiology*; D005145:Face; D006801:Humans; D006861:Hydrogen Peroxide / Q000009:adverse effects*; D008297:Male; D012390:Root Canal Therapy / Q000009:adverse effects*; D013352:Subcutaneous Emphysema / Q000209:etiology*; D007507:Therapeutic Irrigation / Q000009:adverse effects
chemical_list: D006861:Hydrogen Peroxide