The principle of this technique is to apply the bleaching agent
in the same time on the facial enamel (outside) and the sealed cavity access (inside) of the discolored endodontically treated tooth.
Furthermore, although both bleaching agents
reduced microhardness but there was no significant difference between them.
The present results suggest that when a mixture of the SP and DW or a mixture of SP and 30% HP is used as a bleaching agent
, the appropriate application time of a 10% SA solution before the bonding procedures are 5 minutes and 30 minutes, respectively.
Regardless of the solution and bleaching agent
type, CME showed the furthest color coordinates to pure white and LU showed the closest color coordinates to pure white (p < 0,05).
Four specimens were used as a control forSEM evaluation and remaining six were bleached with a commercial bleaching agent
Everbrite tooth whitening system(1866 E.
A 10% Carbamide peroxide bleaching agent
is the most commonly used at-home bleaching product.
The treatment disperses a bleaching agent
into the air and then detoxifies the chemical.
Prof Hutchings' initial research - also EU funded - analysed the production of hydrogen peroxide, a natural bleaching agent
widely used in the textile and paper industry and in cosmetic and pharmaceutical applications.
Sodium hypochlorite (NaClO) is the active constituent in chlorine bleach, a powerful oxidizer and bleaching agent
. It has been widely used since the 1930s due to its great disinfecting characteristic.
Yuzhong's owner, surnamed "Chen", was cited as saying that his company was able to sell bleaching agent
at 9,000 yuan ($1,319) per ton versus the market price of 11,000 yuan, said Legal Weekend.
During the work, the temperatures of the pipes dropped faster than set criteria because of inappropriate management of the temperature, but the data were erased from records using a bleaching agent
, according to Hitachi, its group company and other sources.