[An approach to removing stains and remineralization of dental fluorosis].
341 mottled teeth were bleached with 4% and 18% hydrochloric acid; the mixture of 36% hydrochloric acid, 30% hydrogen peroxide and anesthetic ether; and 30% hydrogen peroxide warmed by infra-red ray lamp. The effects were evaluated clinically. The extracted mottled and normal teeth were treated with the methods mentioned above. The decolouration effects, the structural changes of tooth surface, and the remineralization were examined by scanning electronmicroscopy and polaroid microscopy. The results showed: all of the four methods had the decolouration effects; the decolouration effect was better in the teeth with higher mineralization and the pigmentation existed more superficially; complete decolouration was 94.8% and lightened cases were 5.2%. The mechanism of decolouration seemed to be the dissolution of tooth superficial layer containing pigment. The decalcified tooth surface might be recalcified by the treatment of recalcification solution, or by saliva itself.
Zhu
Q
Q
School of Stomatology, Beijing Medical University.
D000293:Adolescent; D000328:Adult; D002648:Child; D004986:Ether / Q000008:administration & dosage; D005260:Female; D009050:Fluorosis, Dental / Q000188:drug therapy*; D006801:Humans; D006851:Hydrochloric Acid / Q000008:administration & dosage / Q000627:therapeutic use; D006861:Hydrogen Peroxide / Q000008:administration & dosage / Q000627:therapeutic use; D008297:Male; D008875:Middle Aged; D014070:Tooth / Q000187:drug effects / Q000648:ultrastructure; D014073:Tooth Bleaching / Q000009:adverse effects / Q000379:methods; D014089:Tooth Remineralization
D004986:Ether; D006861:Hydrogen Peroxide; D006851:Hydrochloric Acid