title: Pigmentation of the oral mucosa after root canal filling with AH-26. A light and electron microscopic study.
mesh_terms: D000293:Adolescent; D001729:Bismuth / Q000009:adverse effects*; D004338:Drug Combinations / Q000009:adverse effects; D004853:Epoxy Resins; D005882:Gingival Diseases / Q000139:chemically induced*; D006801:Humans; D008297:Male; D008709:Methenamine / Q000009:adverse effects*; D008875:Middle Aged; D010859:Pigmentation Disorders / Q000139:chemically induced*; D012387:Root Canal Filling Materials / Q000009:adverse effects*; D012834:Silver / Q000009:adverse effects*; D014025:Titanium / Q000009:adverse effects*
chemical_list: D004338:Drug Combinations; D004853:Epoxy Resins; D012387:Root Canal Filling Materials; D012834:Silver; C028044:epoxy resin AH-26; D014025:Titanium; D008709:Methenamine; D001729:Bismuth