[Clinical study employing a photoelectric colorimeter to study discoloration of gingiva after cementation of crowns].
D003124:Colorimetry / Q000379:methods; D003442:Crowns / Q000009:adverse effects*; D003722:Dental Alloys; D003776:Dental Porcelain; D005882:Gingival Diseases / Q000209:etiology / Q000473:pathology*; D006801:Humans; D010859:Pigmentation Disorders / Q000209:etiology / Q000473:pathology*
D003722:Dental Alloys; D003776:Dental Porcelain