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All Journal Jurnal Material Kedokteran Gigi
Gunawan Wibisono
Program Studi Kedokteran Gigi Universitas Diponegoro
Dentistry Materials Science & Nanotechnology

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Pengaruh Penambahan Pati Beras dan Jeda Pengisian Gips Terhadap Stabilitas Dimensi Alginat Tenia Yohana Oktaviana; Oedijani Santoso; Gunawan Wibisono; Lusiana Batubara
Jurnal Material Kedokteran Gigi Vol 10 No 1 (2021): JMKG Vol 10 No 1 Maret 2021
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32793/jmkg.v10i1.629

Abstract

Alginate is an impression material that is widely used in dentistry but lacks dimensional stability. The time delay for filling in the gypsum is also one of the things that causes a change in the dimensional stability. Natural starch can be found in plants, one of which is rice, which is often found. Starch and alginate can both undergo a gelatinization process so that starch can be used as an alginate mixture. This study aims to determine the effect of adding rice starch to the alginate printing material and the time delay for filling the gypsum on the dimensional stability of the printed output. This research wass a laboratory experimental study using a post-test only control group design. The sample of this study consisted of 36 samples divided into 12 groups. Measurement of the dimensional stability of the printed output was carried out using a digital caliper. The data were analyzed by means of the Two-Way ANOVA test. The results showed that the mean percentage change in the dimensions of the treatment group was smaller than the control group. The results of the Two-Way ANOVA test showed significant results (p <0.05) on the effect of the concentration of rice starch in the alginate printing material on the dimensional stability of the printouts, while the effect of the time delay for filling the gypsum on the dimensional stability of the printed results showed insignificant results (p>0,05). There was an interaction between the concentration of rice starch added and the time delay for filling the gypsum on the dimensional stability of the printouts (p <0.05).
Pengaruh Perendaman Larutan Asam Jawa (Tamarindus Indica) Terhadap Kekerasan Resin Komposit Nanohibrid dan Nanofil: The Effect of Soaking in Tamarind Solution (Tamarindus Indica) on the Hardness of Nanohybrid and Nanofil Composite Resins Avira Marsha Samiaji; Yoghi Bagus Prabowo; Gunawan Wibisono; Indah Saraswati
Jurnal Material Kedokteran Gigi Vol. 12 No. 2 (2023): JMKG Vol 12 No 2 September 2023
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32793/jmkg.v12i2.1290

Abstract

Resin komposit mempunyai ukuran nano yaitu resin komposit nanohibrid dan nanofil yang dibuat oleh bahan pengisi berbeda, sehingga dapat mempengaruhi sifat material resin komposit yang disebabkan karena larutan asam. Penelitian ini bertujuan untuk mengetahui pengaruh perendaman larutan asam jawa (Tamarindus indica) terhadap kekerasan resin komposit nanohibrid dan nanofil. Jenis Penelitian ini adalah penelitian eksperimental laboratoris dengan pre-test - post-test only control group design menggunakan 28 sampel resin komposit nanohibrid dan nanofil dan dibagi menjadi 4 kelompok perlakuan dengan masing masing 7 sampel. Kekerasan resin komposit nanohibrid dan nanofil dilakukan pengukuran menggunakan Vickers Hardness Tester. Pengukuran kekerasan awal dilakukan setelah perendaman dalam aquades selama 24 jam di incubator dengan suhu 370C. Pengukuran kedua dilakukan setelah pernedaman larutan aquades dan asam jawa selama 1 menit/hari dalam suhu 370C. Uji One Sample Test Resin komposit nanohibrid perendaman aquades p=0,021 (p>0,05) tidak signifikan. Resin komposit nanohibrid perendaman asam jawa, resin komposit nanofil perendaman aquades dan asam jawa p=0.000 signifikan. Terdapat perbedaan bermakna kekerasan resin komposit pada perendaman aquades dan asam jawa. Kesimpulan penelitian ini adalah terdapat pengaruh perendaman larutan asam jawa (Tamarindus indica) terhadap kekerasan resin komposit nanohibrid dan nanofil.
Co-Authors Avira Marsha Samiaji Indah Saraswati Lusiana Batubara Oedijani Santoso Tenia Yohana Oktaviana Yoghi Bagus Prabowo