Pengaruh Variasi pH Saliva terhadap Perlekatan Streptococcus mutans pada Resin Komposit Nanofil

Rahma Syarafina Maharani (Departemen Ilmu Biomaterial Kedokteran Gigi Fakultas Kedokteran Gigi, Universitas Gadjah Mada Yogyakarta.)
Widowati Siswomiharjdo (Departemen Ilmu Biomaterial Kedokteran Gigi Fakultas Kedokteran Gigi, Universitas Gadjah Mada Yogyakarta.)
Siti Sunarintyas (Departemen Ilmu Biomaterial Kedokteran Gigi Fakultas Kedokteran Gigi, Universitas Gadjah Mada Yogyakarta.)

Jurnal Material Kedokteran Gigi
Vol 6 No 2 (2017): JMKG Vol 6 No 2 September 2017

Nanofilled composite resin restorations are in contact with saliva.Salivary pH affect the hydrolysis process and produce a surface roughness.S.mutansadhesion occur in a rough area of the oral cavity.The aim was to determine the effect of variations in salivary pHonS.mutansadhesion to nanofilled composite resin.Nanofilled composite resin(Filtex Z350XT-3M ESPE)5mm diameter and 2mm thick(N=12)were divided into three groups(n=4)and immersed in 5ml artificial saliva pH 3.5, pH 7, pH 8, incubated 14 days,37°C. Samples were soaked into saliva 1 hour,37 C. Samples were put into bacterial suspension 24 hours,37°C, diluted to 10.0.1ml of the final dilution were cultured on BHI agar, incubated 48 hours,37°C. S.mutans colonies were determined using Colony Counter(CFU/ml). Data were analyzed with One-Way ANOVA test(a=0.05) and LSD0.05. The test showed there is influence ofthe variations in salivary pHonS.mutans adhesionto nanofilled composite resin(p<0.05). Based on LSD0.05 test, there are significant differences between the pH 3.5 group and the pH 7; pH 8 groups, butnot between the pH 7group and the pH 8 group. Variations in salivary pH affectedS.mutansadhesion to nanofilled composite resin.The acidic pH of saliva increased the S.mutansadhesion on nanofilled composite resin compared with the neutral or alkaline.