BACKGROUND Non vital bleaching is simple, conservative procedure for esthetic correction of discolored endodontically treated teeth. The aim of this study was to determine and compare the amount of peroxide leakage from four different bleaching agents i.e superoxol, sodium perborate, combination of superoxol & sodium perborate and carbamide peroxide during intracoronal bleaching, as the safe an...

Nanotechnology is the recent science dealing with materials at nano-sized (smaller than 100nm). showed its potential significance in almost all industrial sectors. In current paper, potency of nanotechnology was affirmed food and technology, especially manufacturing edible oils which passes many procedures, from most important step bleaching to remove colorants contaminants enhance quality para...

Tetracyclines were used extensively in the 1950s and 1960s as a broadI~c t rum antibiotic against many infections. In 1958, their adverse dental effects were reported? Studies in Ne following two decades have con'firmed that tetracyclines administered during tooth development could disturb enamel formation and cause dentin discoloration. 2-s A number of clinical methods have been considered to ...

OBJECTIVE To use the criteria set by the American Dental Association to evaluate the effectiveness of nightguard vital bleaching with 10% carbamide peroxide through a controlled randomized clinical trial. MATERIALS AND METHODS Fifty volunteers allocated to either an experimental group(Opalescence PF 10%; OPA) or a control group (placebo; PLA) used a gel for 21 days. Observations of tooth colo...

Objective: This retrospective study was performed to evaluate the correspondence between digital image analysis and spectrophotometry tooth shade results.Methods: The population consisted of 10 patients. Office bleaching using an in-office whitening. Tooth analysed by photographs at baseline, 1-week 3-month follow-up visits. two methods evaluated based on total color change (ΔE), calculated lig...