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All Journal Dental Journal (Majalah Kedokteran Gigi) Jurnal Material Kedokteran Gigi Indonesian Journal of Dental Medicine
R Helal Soekartono
Departemen Material Kedokteran Gigi Fakultas Kedokteran Gigi Universitas Airlangga
Dentistry Materials Science & Nanotechnology

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Sitotoksisitas resin akrilik hybrid setelah penambahan glass fiber dengan metode berbeda (Cytotoxicity of the hybrid acrylic resin after glass fiber reinforcement with difference method) Intan Nirwana; R. Helal Soekartono
Dental Journal (Majalah Kedokteran Gigi) Vol. 38 No. 2 (2005): June 2005
Publisher : Faculty of Dental Medicine, Universitas Airlangga https://fkg.unair.ac.id/en

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (110.29 KB) | DOI: 10.20473/j.djmkg.v38.i2.p56-59

Abstract

Glass fiber reinforcement of the hybrid acrylic resin with difference method can enhance residual monomer content of the material; it can cause cytotoxic effect on fibroblast cells. The purpose of this study was to know the cytotoxicity of hybrid acrylic resins after glass fiber reinforcement with difference method on the cultured fibroblasts. The squared specimens of 10 mm in length, 10 mm in width and 1.5 mm in thickness were cured for 20 minutes at 100° C. The fibroblast cells were grown in Eagle's Minimum Essential Medium to be 2 × 105 cells/ml, then the cells were added to the samples in the plates and incubated at 37° C. After 48 hours, the cytotoxic effect was determined by direct cell number count using microscope and a hemocytometer. The statistical analyses using one way ANOVA and LSD test showed that there were significant difference in cell viability (p < 0.05) among the groups. The means percentage of cell viability were 90.00%, 99.,11%, 98.66%, it could be concluded that glass fiber reinforcement into hybrid acrylic resin with either first method or second method was not toxic.
Vibragamator, Kombinasi Vibrator dengan Amalgamator Helal Soekartono; Mochamad Bayu Setiawan; Soebagio Soebagio
Jurnal Material Kedokteran Gigi Vol 9 No 1 (2020): JMKG Vol 9 No 1 Maret 2020
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32793/jmkg.v9i1.359

Abstract

Amalgam mixing proccess should be completely homogeneous so that the amalgam toxicity is reduced. Untreated caries will result in some disadvantage, one of which is tooth loss and should be made a substitute for denture. Making artificial teeth requires a study model. The study model was made from the manufacture of gypsum that was manipulated with water. The preparation of gypsum dough should be minimal porusity in order for the study model to be strong and scratch resistant. Model study should be strong and minimal porusity. Stagnant and homogeneous stirring results in porousity. The porosity of the gypsum dough will affect its compression. Research purpose to Produce amalgam prints that have an initial set time faster and produce gypsum prints that have better compressive strokes. The study used a total sample of 28 specimens. The specimens were divided into 2 control groups and 2 treatment groups with each group consisting of 7 specimens. Manipulation of gypsum by using Vibragamator with ratio done and vibrator. Compare compressive strength test results using autograph. Manipulation of amalagam by using the vibrator and amalgamator together with record the time of manipulation. Result, gypsum with the aid of a vibragamator has a higher level of Compressive Strength than using a vibrator. Amalgam using amalgamator has a faster initial time set compared to using vibragamator. Conclusion, prototype Vibragamator can produce stronger and harder gypsum mold but less effective in shuffling amalgam.
Sifat Fisik Permukaan Resin Komposit Hybrid Setelah Direndam dalam Minuman Energi pH Asam R Helal Soekartono; Anita Yuliati; Ratih Mutiara Sani; Dian Dwi Pratiwi
Jurnal Material Kedokteran Gigi Vol 3 No 1 (2014): JMKG Vol 3 No 1 Maret 2014
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (499.265 KB)

Abstract

Composite resins are becoming more popular in restorative dentistry, particularly because of their superior esthetic properties. Composite resin may suffer degradation over time, which can be predicted by microstructural changes on its surface due to acidic conditions. The purpose of this study was to evaluate the microstructural changes of the surface of hybrid resin composite after immersed in acidic energy drinks of pH 3,2; 3,7; and 3,9 for 2 hours. Hybrid resin composites were cured with LED light curing unit. Specimens of 2 mm depth and 7 mm diameter were divided into 3 experimentals and 1 control. Each experimental was immersed in different energy drinks with different pH respectively (pH 3,2; 3,7; 3,9) and the control was immersed in aquadest for 2 hours. The surface roughness was measured using surface roughness measuring instrument before and after immersion then the Microstructural changes were evaluated under a scanning electron microscope (SEM). Surface roughness measuring instrument and SEM analysis showed, the erosion and surface degradation to all 3 hybrid resin composites after being subjected to the experimental conditions. The surface of hybrid resin composite undergoes noticeable microstructural changes after being immersed in energy drinks of pH 3.2, 3.7 and 3.9 for 2 hours.
Antifungal Activity from Garlic Extract (Allium sativum) Against Candida albicans Growth Agustantina, Titien Hary; Soekartono, R. Helal
Indonesian Journal of Dental Medicine Vol. 4 No. 2 (2021): Indonesian Journal of Dental Medicine
Publisher : Faculty of Dental Medicine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/ijdm.v4i2.2021.60-62

Abstract

Background: The accumulation of food waste and plaque causes Candida albicans development, which causes the product of Candida albicans' endotoxin to rise and enter into the mucous membrane, producing inflammation known as denture stomatitis. Many natural ingredients have been transformed into medications, including Allium sativum (garlic), which includes antibacterial allicin components. Purpose: The purpose of this study was to investigate inhibitory activity of A. sativum extract toward C. albicans growth. Methods: The sample used in this investigation was A. sativum extract at various concentrations of 5%, 25%, 50%, and 75%. The sample was separated into five groups: 5%, 25%, 50%, and 75% A. sativum extract, with plain A. sativum extract serving as the control group. Each group has three specimens. One way analysis of variance (ANOVA) and Tukey honest significant different (HSD) were used to evaluate the data (p<0.05). Results: There was significant difference of 5%, 25%, 50%, and 75% A. sativum extract towards C. albicans growth. Conclusion: The highest antifungal activity on Candida albicans growth was found in 75% Allium sativum extract.
Co-Authors Anita Yuliati Dian Dwi Pratiwi Intan Nirwana, Intan Mochamad Bayu Setiawan Ratih Mutiara Sani Soebagio Titien Hary Agustantina