Pengaruh Teknik, Bahan, dan Konsentrasi Bahan Bleaching yang Berbeda terhadap Kekasaran Permukaan Gigi Setelah Diskolorasi Kopi (In-Vitro)

Abstract

Tooth discoloration is a condition in which teeth experience changes in pattern, color, or translucency. Generally, discoloration is divided into two types based on the location of the discoloration: intrinsic discoloration and extrinsic discoloration. There is no significant difference in roughness after home bleaching and in-office bleaching. Tooth surface roughness is important to consider, as a rough tooth surface provides a favorable environment for bacterial adhesion and colonization, ultimately increasing tooth demineralization and gingival infection. This study is an in-vitro experimental study using 24 mandibular incisor tooth samples and using a Stylus Profilometer to see the tooth surface roughness value. The samples were soaked in coffee for 4 days, then the tooth surface roughness was measured. Next, the samples were divided into 4 groups, with home bleaching treatment with 10% and 20% carbamide peroxide, and 35% and 40% hydrogen peroxide, then the tooth surface roughness was measured. Tooth surface roughness data were analyzed using the Shapiro-Wilk data normality test, paired t-test and unpaired t-test. This study found a statistically significant difference in tooth surface roughness before and after coffee discoloration. However, after bleaching, there was also a difference in tooth surface roughness in all groups, but the difference was not significant. This study also showed no significant difference between bleaching techniques, materials, and concentrations in tooth surface roughness.