Systematic assessment of color removal following vital bleaching of intrinsically stained teeth.
Various treatment variables associated with a standard bleaching technique were systematically recorded in 53 individuals exhibiting intrinsic discoloration of permanent teeth. These variables (predictors) included: (1) etiology (fluoride or tetracycline); (2) age of the patient; (3) the presented color of the stain; (4) the intensity of that color; (5) a long versus short bleaching time technique; and (6) the number of bleaching sessions. These were assessed as to their relationship with the results of treatment (dependent variable). The findings of a multiple regression analysis revealed that the contributions of the individual predictors were significantly different between those stains caused by tetracycline ingestion (N = 27) and those stains due to fluoride ingestion (N = 20). The analysis also revealed that those variables contributing to a significant proportion of the variance in results of treatment when tetracycline was the cause were: (1) the color of the stain and (2) the number of bleaching sessions. When fluoride was apparently the causal agent: (1) the bleaching time technique; (2) age of the patient; (3) color of the stain; and (4) the number of bleaching sessions contributed to a significant proportion of the variance in the results of treatment.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D003116:Color; D005260:Female; D009050:Fluorosis, Dental / Q000150:complications; D006801:Humans; D006861:Hydrogen Peroxide / Q000627:therapeutic use; D008297:Male; D013752:Tetracycline / Q000009:adverse effects; D013997:Time Factors; D014073:Tooth Bleaching / Q000379:methods*; D014075:Tooth Discoloration / Q000209:etiology / Q000473:pathology / Q000628:therapy*
D006861:Hydrogen Peroxide; D013752:Tetracycline