title: Furfurals in chlorhexidine-discolored pellicle.
abstract: The purpose of the present study was to investigate the possible presence of furfurals in chlorhexidine-discolored pellicle. Pellicle material was scraped off teeth and hydrolyzed in sulfuric acid and the hydrolysate then extracted with ether and examined by thin layer chromatography and gas chromatography-mass spectrometry. The presence of furaldehyde in discolored pellicle was demonstrated by these methods. There were also indications of hydroxymethyl furfuraldehyde in the thin layer chromatograms.
mesh_terms: D002710:Chlorhexidine / Q000009:adverse effects; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D003743:Dental Enamel / Q000378:metabolism*; D044622:Dental Pellicle; D005662:Furaldehyde / Q000032:analysis; D006801:Humans; D013058:Mass Spectrometry; D014075:Tooth Discoloration / Q000139:chemically induced
chemical_list: D005662:Furaldehyde; D002710:Chlorhexidine