Pengaruh Nanofilled Resin Coating terhadap Kekasaran Permukaan Semen Ionomer Kaca

Abstract

One of the restorative dental materials that is continuously developed is Glass Ionomer Cement (GIC). The aim of this research is to know whether there is influence of nanofilled resin coating application on GIC to reduce surface roughness. In this study GIC type II (EQUIA Forte, GC, Japan) was used to be mechanically manipulated and inserted into a mold which produced a sample of 6.0±0.3 mm in diameter and 3.0±0.2 mm in height. GIC samples were divided into 2 groups namely 10 GIC samples were not coated with nanofilled resin coating as control group and 10 GIC samples were coated with nanofilled resin coating as treatment group. GIC samples were tested immediately and then immersed in sterile distilled water in a 37°C incubator. After 24 hours, GIC samples were surface roughness tested using a Surface Roughness Tester. Then all samples were brushed using a soft bristle mechanical tooth brush for 1 hour. After brushing, the sample is tested for final surface roughness. The results showed an increase in surface roughness in non-coated group/control (0.005 ± 0,328mm) and coated group (0.015±0.240 mm). Statistical data analysis using unpaired t test showed that there was no significant difference (p>0.05) in the increasing of surface roughness between control group and treatment group. It can be concluded that application of nanofilled resin coating to GIC cannot reduce the roughness of GIC surface.

Effect of varnish coating agent application on surface hardness of glass ionomer cement after immersion in carbonated drinks

“…There are four treatment groups in this study. 18 Six specimens of glass ionomer cement were used in each treatment group.…”

“…19 Glass ionomer cement was manipulated according to the manufacturer's instructions using High Speed Mixer HSM3 for 10 seconds, then placed into the mold with capsule applier. 17,18,20 The restoration was covered with a mylar strip, a glass preparation, and a 200 g load for 7 minutes to ensure the initial hardening. 17,20,21 Excess material was removed using scalpel and blade.…”

Mechanical Properties of Giomer After Immersion in Carbonated Drinks

“…Di dalam bidang kedokteran gigi kekuatan tarik diametral diperlukan agar bahan dapat menahan beban kunyah. 9 Minuman berkarbonasi mengandung asam yang kaya akan ion H + yang bisa berdifusi ke dalam restorasi berbasis resin dan menyebabkan kelarutan yang tinggi sehingga bersifat erosif. 10 Penyerapan air dipengaruhi oleh proses difusi yang dapat melunakkan matriks bahan restorasi sehingga berdampak negatif terhadap sifat fisik bahan restorasi.…”

“…Bahan restorasi lainnya akan meregang dan mengalami deformasi sebelum patah, yang berarti bahan restorasi tersebut bersifat elastis (ductile). 9 Pada penelitian ini, didapatkan hasil berupa kekuatan tarik diametral pada kelompok sampel immediate sebesar 29,6±3,7 MPa, kekuatan tarik diametral pada kelompok sampel kontrol sebesar 51,1±3,9 MPa, dan kekuatan tarik diametral pada kelompok sampel perlakuan sebesar 44,8±5,3 MPa. Hasil ini sesuai dengan penelitian Lien dan Vandewalle, sampel giomer direndam ke dalam larutan akuades selama 24 jam dengan suhu 37 °C, didapatkan kekuatan tarik diametral giomer sebesar 51,5+1 MPa.…”