Internal Teeth Whitening

The aim of the present work was to compare spectrophotometrically the number of sessions for an effective color change with 100% carbamide peroxide, 37% and 35% hydrogen peroxide, through the Walking Bleach technique. This was an experimental study, in vitro, in parallel, with blind in the measurement of the effect and in the data analysis. Eighty-eight premolars extracted for orthodontic indication were used. These were endodontically treated and artificially pigmented with chromogens derived from blood decomposition products. They were randomly divided into 4 groups of 22 teeth (one group for each bleaching agent, plus a control group with distilled water). The treatment regimen for each group was 4 sessions with a separation of 4 days between each one. The baseline and post-treatment color was recorded using the Vita Easyshade V dental spectrophotometer, with which the colors were recorded in CIE Lab* color space. The values of the total color variation (SD) between the initial parameters and the different evaluation times were subsequently calculated.

Autorentext

Chirurgo dentale, Università Andrés Bello, Viña del Mar, Cile. Programma di specializzazione in Endodonzia, Università Andrés Bello, Viña del Mar, Cile. Tesi premiata come "miglior lavoro di ricerca per laureandi in odontoiatria, anno 2017".