Resin akrilik heat cured merupakan material yang paling sering digunakan dalam pembuatan basisgigi tiruan. Seiring perkembangan ilmu pengetahuan dan teknologi, termoplastik nilon juga menjadipilihan bagi material basis gigi tiruan. Material basis gigi tiruan mempunyai kekurangan pada sifatfisiknya, diantaranya adalah kekasaran permukaan. Kekasaran permukaan dapat terjadi pada resinakrilik heat cured dan termoplastik nilon diantaranya disebabkan karena terpaparnya material denganlarutan yang mengandung asam, salah satunya adalah kopi. Penelitian ini dilakukan untuk mengetahuiperbedaan kekasaran permukaan antara resin akrilik heat cured dan termoplastik nilon sebelum dansetelah direndam dalam larutan kopi Ulee Kareng (Coffea robusta). Jumlah spesimen pada penelitianini ada 8 spesimen, 4 resin akrilik heat cured Meliodent dan 4 termoplastik nilon BIO TONE denganukuran 20x20x2 mm. Spesimen direndam dalam larutan kopi selama 4 hari (mensimulasikanmengkonsumsi larutan kopi selama 1 tahun) dengan larutan kopi diganti setiap hari. Kekasaranpermukaan sebelum dan setelah perendaman diukur menggunakan alat surface roughness tester. Hasiluji t berpasangan pada kedua kelompok menunjukkan perbedaan bermakna kekasaran permukaansebelum dan setelah perendaman (p<0.05), hasil uji t tidak berpasangan antara resin akrilik heat cureddan termoplastik nilon sebelum perendaman menunjukkan terdapat perbedaan bermakna (p<0.05) dansetelah perendaman juga menunjukkan perbedaan bermakna (p<0.05). Nilai kekasaran permukaanresin akrilik heat cured lebih tinggi dibandingkan termoplastik nilon setelah direndam dalam kopiUlee Kareng (Coffea robusta).Kata Kunci: Resin akrilik, termoplastik nilon, kopi
Introduction:The absorption of fluid in the heat cured acrylic resin is able to cause the increase in surface roughness. Absorption of acidic fluid such as soft drinks can cause even higher increase of surface roughness. The objective of this study was to determined the effect of soft drinks towards heat cured acrylic resin denture base surface roughness. Methods: Specimens of this study were 32 pieces of specimen with the size of 12×12×3 mm. Sixteen pieces of specimens were kept in aquadest as a control group and 16 pieces of specimens were immersed in the soft drinks as the treatment group. Initial surface roughness was measured using surface roughness tester. The specimens were then immersed in both immersion media for 2 days. After immersion, the surface roughness of specimens were measured again. Results: Data obtained on the roughness measurements were analyzed using paired t test with the results of the analysis showed a significant difference (p<0.05). Conclusion: It was concluded that there was increased in heat cured acrylic resin denture base surface roughness after immersed in soft drinks solvent.
Resin akrilik heat cured merupakan material yang sering digunakan dalam pembuatan basis gigi tiruan. Resin akrilik sering direndam dalam larutan pembersih gigi tiruan untuk menghilangkan mikroorganisme. Infusa daun kemangi 50% terbukti dapat menurunkan jumlah koloni Candida albicans sehingga dapat digunakan sebagai bahan alternatif pembersih gigi tiruan. Namun, resin akrilik heat cured bersifat menyerap cairan yang diduga dapat menyebabkan perubahan dimensi. Penelitian ini bertujuan untuk mengetahui pengaruh durasi perendaman resin akrilik heat cured dalam infusa daun kemangi 50% terhadap perubahan dimensi. Spesimen pada penelitian ini berjumlah 20 buah dan berbentuk silinder berukuran diameter 50 ± 1 mm d an tebal 1 ± 0.5 mm. Data yang diperoleh dianalisis menggunakan uji Friedman dan diuji lanjut dengan Wilcoxon. Hasil analisis menunjukkan terdapat perbedaan yang bermakna (p˂0.05) perubahan dimensi resin akrilik heat cured setelah perendaman dalam infusa daun kemangi 50% antara setiap kelompok durasi perendaman. Perbedaan yang tidak bermakna hanya terdapat antara kelompok setelah perendaman 5 dan 7 hari dengan nilai p>0.05. Kesimpulan dari penelitian ini adalah adanya pengaruh durasi perendaman resin akrilik heat cured dalam infusa daun kemangi 50% terhadap perubahan dimensi.Kata kunci: Resin akrilik heat cured, kemangi
Background: Acrylic removable partial denture can be cleaned by brushing method, soaking, or a combination of both. The level of cleanliness of acrylic removable partial denture affected by frequency, the cleaning method, the duration of usage and dentist instructions. The main objective of this study is to determine the level of cleanliness of acrylic removable partial denture based on the brushing cleaning method and duration of usage. Method: The subject in this study were 32 people that wear acrylic removable partial denture in the residential complex of PT. Arun NGL with purposive sampling technique. This study's scoring was based on Reddick et al studies to determine the level of cleanliness of acrylic removable partial denture. Result:The results of this study showed that the subjects which using the brushing cleaning method, were 53,1% in cleaned category, 31,3% of the subjects was dirty category, and 15,6% were very dirty category. Conclusion:The conclution of this study is the level of majority subjects whose cleaning their denture by using the brushing method included to clean category in duration of usage from 0-10 years.
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