Naslov
Effects of bleaching agent on physical and aesthetic properties of restorative materials

Autori
Klarić Sever, Eva ; Šimenc, Nika ; Rakić, Mario ; Skenderović, Hrvoje ; Sever, Ivan ; Tarle, Zrinka

Izvornik
Dental materials journal (0287-4547) 35 (2016), 5; 788-795

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Bleaching agents ; Composite material ; Glassionomer cement ; Light transmission ; Microhardness

Sažetak
To investigate the effects of bleaching agent on microhardness, color and light transmission of different restorative materials. Specimens (n=20) of Tetric EvoCeram (TEC), Tetric EvoCeram Bulk Fill (TECBF) and Equia Fill (EQUIA) were treated with either 40% hydrogen peroxide Opalesence Boost or destilled water for 45 min. Specimens were stained in tea solution or stored in deionized water for one and two weeks. Color, microhardness and light transmission were monitored at the baseline, after the bleaching and after the tea immersion or storage in deionized water. After the bleaching a significant reduction in surface microhardness (p<0.001) was recorded for all materials. Clinically visible color change (ΔE>3) was observed after the bleaching and after treatment in tea solution, but only in EQUIA samples. The absorption coefficient was the largest for the samples stained in tea solution. Bleaching can affect the microhardness and color of fillings ; therefore, they should be sometimes replaced.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Dentalna medicina

POVEZANOST RADA