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All Journal Dentika Dental Journal Sistemasi: Jurnal Sistem Informasi
Rahmawati, Lutfi
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Computer Science & IT Dentistry Electrical & Electronics Engineering

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Effect of Immersion Duration in Coffee Beverage on Colour Stability of Polymethyl Methacrylate Denture Base Reinforced with 1% Chitosan Nanogel (Laboratory Study) Rahmawati, Lutfi; Dahar, Eddy; Angelia, Veronica
Dentika: Dental Journal Vol. 26 No. 2 (2023): Dentika Dental Journal
Publisher : TALENTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/dentika.v26i2.11719

Abstract

Hot polymerized acrylic resin (RAPP) denture bases have several weaknesses, so RAPP requires reinforcing materials, one of which is chitosan. Extrinsic factors cause color changes in RAPP. The aim of this research was to determine the effect of soaking time for RAPP denture base material after adding 1% chitosan nanogel in coffee solution on color stability. Laboratory experimental research, using 16 cylindrical plates, diameter 15 x 2 mm (n = 8 from each group). There are 2 groups, the water-soaked group and the coffee drink group. Color stability measurements were carried out before and after soaking for 1, 2, 3, 4, and 7 days. The color stability of the samples was tested using a colorimeter and color changes were analyzed using the Kruskall-Wallis and Mann-Withney tests. There is an effect of soaking time for RAPP denture base material on color stability with a value of p = 0.0001. Soaking the RAPP denture base material after adding 1% chitosan nanogel in a coffee solution for color stability for 4 days is still clinically acceptable.
Information Technology Security Risk Management using the OCTAVE-S Method Rahmawati, Lutfi; Hartomo, Kristoko Dwi
Sistemasi: Jurnal Sistem Informasi Vol 12, No 3 (2023): Sistemasi: Jurnal Sistem Informasi
Publisher : Program Studi Sistem Informasi Fakultas Teknik dan Ilmu Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32520/stmsi.v12i3.3122

Abstract

The Salatiga City Population and Civil Registration Office is a regional device organization that already uses information technology in its business processes. Although they have taken advantage of the information system, they have not yet conducted an assessment of risk threats and have not run a risk management. The source of the problem is a problem in implementing risk measurement and management techniques using the Octave-S method that focuses on organizations with no more than 100 members. This technique is used to identify and analyze threats to critical assets in Salatiga City Population and Civil Registration Service. The results of analysis of such threats will be useful when performing mitigation plans in accordance with existing security practices. From the research that has been conducted, there are 2 areas of security practice that produce yellow stoplight status which is a sign that the organization has implemented security practices but is not yet perfect. Both areas of security practice will be selected as mitigation areas.In
Co-Authors Eddy Dahar Kristoko Dwi Hartomo Veronica Angelia