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All Journal Dentika Dental Journal Jurnal Teknosains The Indonesian Journal of Dental Research Majalah Kedokteran Gigi Indonesia ODONTO Dental Journal Insisiva Dental Journal : Majalah Kedokteran Gigi Insisiva Mutiara Medika: Jurnal Kedokteran dan Kesehatan INDONESIAN JOURNAL OF PHARMACY Dental Journal (Majalah Kedokteran Gigi) Indonesian Journal of Chemistry B-Dent, Jurnal Kedokteran Gigi Universitas Baiturrahmah Jurnal Material Kedokteran Gigi Journal of Material Processing and Characterization (JMPC) Odonto dental journal Indonesian Journal of Dentistry Jurnal Akuntansi Kontemporer

W. Widjijono

Departemen Biomaterial, Fakultas Kedokteran Gigi, Universitas Gadjah Mada, Yogyakarta

Author-ID : 416011

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Dentistry Economics, Econometrics & Finance Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health

Published : 42 Documents Claim Missing Document

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Pengaruh Lama Perendaman Fiber Reinforced Composite dengan Fiber Sisal (Agave sisalana) Terkalissai dalam Saliva Buatan Terhadap Perubahan Dimensi Wibowo, Diva Agrita Dentisia; Widjijono, Widjijono; Siswomihardjo, Widowati
Jurnal Material Kedokteran Gigi Vol 7 No 1 (2018): JMKG Vol 7 No 1 Maret 2018
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Fiber reinforced composite is a material composed of matrix and reinforced by fiber. Fiber sisal is a natural fiber an alternatives synthetic fiber developed as dental material. Resin composite matrix is a hydrophilic substance that cause dimensional change. Alkalization of sisal fiber reduces the ability of hydrophilic sites which affects the dimensional changes. The aim of this study was to determine how different period of immersion affect dimensional change in samples. The samples used in this research were FRC made from flowable resin composite (Master Flow, Brazil), and alkalized sisal fiber. The samples were shaped into cuboid measuring 25x2x2 mm. Fiber was placed in the middle of sample with continuous unidirectional direction and then irradiated for 20 seconds using LCU. A total of 16 samples were divided to 4 groups, each group with the different period of immersion 0, 7, 14 and 21 days respectively. Dimensional changes were measured by the final dimension minus the initial dimension. Dimensional change was measured by the length, width, and height using digital sliding caliper with 0.001 mm nonius. The samples were immersed in the artificial saliva with pH 7. The data was analyzed using one way Anova and followed by LSD0.05. The result shows the mean value and standard deviation of dimensional changes with period of immersion at 0, 7, 14 and 21 days were 0.264Â±0.085, 2.856Â±0.089, 4.417Â±0.115 and 4.294Â±0.087 mm3. The F value obtained from one way Anova was 1.640Â±103 and the significance was 0.001 (p<0.05), indicated a significance difference. LSD presented a significance difference of mean to all treat,ent except for 14th and 21th day. This study concluded that various period of immersion increase effect to the dimensional changes of FRC with alkalized fiber sisal.

Efek Samping Lama Aplikasi dari Bleaching Agent Hidrogen Peroksida 40% Terhadap Kekasaran Permukaan Resin Komposit Tipe Nanofill Izfan Yulviansyah; Widjijono Widjijono; Dyah Irnawati
Jurnal Material Kedokteran Gigi Vol 2 No 2 (2013): JMKG Vol 2 No 2 September 2013
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (261.726 KB)

Bleaching is a dental treatment chemically on the vital and non vital teeth undergoing discoloration. One technique is in office bleaching. Application of bleaching agent is not only touching the healthy tooth tissue, but also potentially touched restorative nanofill dental composite resins. Materials research is resin composite nanofil (Filtek Z350, 3 m, USA) and the bleaching agent 40% hydrogen peroxide (Opalescense Boost, USA). Disc-shaped sample (diameter 10 mm, thickness 2 mm) as many as 12 samples and divided into 3 groups each sample 4. The samples applied with bleaching agent 40% hydrogen peroxide at room temperatures (25 C) and contact time: 30 minutes, 45 minutes, and 60 minutes. Surface roughness was measured before and after application of bleaching. Surface roughness was measured before and after application of bleaching. Statistical analysis using a one way ANOVA and LSD 0,05. The results showed the average delta composite resin nanofil roughness with time sequential contacts 30, 45 and 60 minutes is 0,040 0,016 µm ± 0,045 µm ± 0.025, and 0.025 ± 0.125 µm. ANOVA test showed that there is a sinificant influence of variation of long application of hydrogen peroxide 40% against a nanofill composite resin surface roughness (p< 0.05). Test LSD indicates there is a significant difference between the delta’s average surface roughness on all groups, except the group of 30 and 45 minutes. Conclusion this research is a variation time contacts of 40% hydrogen peroxide application increases the surface roughness of a composite resin nanofil.

Perbandingan Kekuatan Tarik antara Stranded Fiber dengan Braided Fiber pada Fiber Reinforced Composite Jenis Ultra High Molecular Weight Polyethylene (UHMWPE) Prihashinta Uswatun Hasanah; Purwanto Agustiono; Widjijono Widjijono
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 (244.405 KB)

Fiber reinforced composite (FRC) is a material that has at least two components were matrix and fiber. Difference of fiber architecture on the FRC may affect the mechanical strength of FRC. Stranded and braided fiber fiber is one of materials that are commonly used in dentistry, both have differences from the sides of the fiber arcitecture. This research aims to know the comparative tensile strength between fiber stranded with braided fiber on FRC type of UHMWPE. This research uses 8 samples were divided into 2 groups. The types of UHMWPE fiber with braided fiber (Construct TM, Kerr, USA) and stranded fiber (Biodental TM, Australia). The sample is 20x10x2mm according ASTM 638M. Tensile strength is measured by using a universal testing machine. Tensile strength data then tested using the indepedent t-test. The results showed the tensile strength fiber and fiber braided stranded i.e. of 35.65 ± 2.538 MPa and 49.43 ± 2.953 MPa. Independent t-test results test shows there is difference significantly in tensile strength between fiber and fiber braided stranded (p < 0.05). The conclusion of the research was there stranded fiber tensile strength higher than with braided fiber on FRC type of UHMWPE.

Pengaruh Perendaman Pada Saliva Buatan Selama 14 Hari Pada Glass Fiber Non Dental Dan Glass Fiber Dental Terhadap Perlekatan Bakteri Streptococcus Mutans Zwista Yulia Dewi; Widjijono Widjijono; Erna Prawita Setyowati
Jurnal Material Kedokteran Gigi Vol 6 No 1 (2017): JMKG Vol 6 No 1 Maret 2017
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

The material in the oral cavity will be coated by saliva. The humidity of material that is immersed in water will increase from time to time. Longer immersion time in water causes an increase in the absorption of water by a material. Non-dental glass fiber can be used as an alternative replacement for fiber glass dental. The advantages of dental glass fiberis widely available with reasonably priced. Fiber glass non dental commonly used as building materials and automotive. Streptococcus mutans bacteria have the ability to stick to the whole surface of the mouth, including dental materials. The purpose of this study is to determine the effect of dental glass fiber and non-dental glass fiber immersion in artificial saliva for 14 days to the adhesions of Streptococcus mutans bacteria.Fiber used in this study is E-glass fiber dental(Fibersplint, Polydentia SA, Switzerland), non-dental glass fiber A (LT, China), flowable composite (CharmFil Flow, Denkist, Korea) and silane coupling agent (Monobond S, Ivoclar Vivadent, Liechtenstein). Subjects were divided into three groups, each group consisting of 5 samples. Streptococcus mutans bacteria was planted in BHI media and calculated by plate count method. Results were analyzed using ANAVA. From the research it showed that the average dental glass fiber bacterial adhesions value was (953.4 ± 7.19), non-dental glass fiber(953.4 ± 7.19) while the composite resin without using fiber glass (848 ± 7.07). Statistical analysis showed a variable composition have a significant effect (p <0.05). The conclusion of this research that the alkali metal content in the fiber glass can affect the amount of bacteria Streptococcus mutans adhesions.

Perbandingan Hipersensitivitas Tipe IV Akibat Paparan Remanium Gm800 Dan Stainless Steel 316L Ikmal Hafizi; Widjijono Widjijono; Marsetyawan HNE Soesatyo
Jurnal Material Kedokteran Gigi Vol 6 No 1 (2017): JMKG Vol 6 No 1 Maret 2017
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32793/jmkg.v6i1.264

Stainless steel and cobalt chromium is a metal that is used in dentistry. Stainless steel (SS) 316L has good corrosion resistance, but there are still many cases of hypersensitivity due to the use of such materials. Remanium GM800 is a cobalt-based alloy which is relatively mild with the advantages of having a high fracture resistance, high modulus of elasticity and resistance to corrosion. The research aims to know type IV hypersensitivity reactions for cobalt chromium GM800 applications compared with 316L Stainless steel. The research was conducted through the test GPMT (Guinea Pig Maximization Test). The pre-research phase does CoCr patch/SS/control application to 3 guinea pigs of each group with concentrations of 5%, 10%, 20%, 40%, and 80%. Primary research begins with intradermal induction on the backs of guinea pigs for 7 days with a suspension of A (50% FCA emulsion dan 50% Propylene glycol), B (SS/CoCr/blank dan Propylene glycol) and C (50% SS/CoCr/blank suspension and 50% FCA) on the left and right backs of guinea pigs. On the 8th day induction results topical concentration of 40% for 24 hours, then opened to see the reaction and closed again for 48 hours. After that, the research was continued with challenge phase by attaching patch 5% concentration for 14 days. On the 28th day was observed erythema and edema on the skin of guinea pigs followed by sacrifice in order to obtain specimen to do immunohistochemical staining by ED antibodies. The result showed 316L SS cause 40% of the samples sensitized that were grouped in moderate classification, while CoCr GM800 cause 20% of the samples sensitized so classified in the mild classification in triggering type IV hypersensitivity reaction. Histopathology examination showed that 42% of the visual field SS 316L specimen expressed macrophages, while only 28% expressed macrophages in CoCr GM800 specimen. The conclusion of this study CoCr GM800 trigger type IV hypersensitivity reaction is lower than SS 316L.

Penyerapan Air Glass Fiber Non Dental – Fiber Reinforced Composite dalam Larutan Mouthwash Etny Dyah Harniati; Widjijono Widjijono; Budiono Budiono
Jurnal Material Kedokteran Gigi Vol 10 No 2 (2021): JMKG Vol 10 No 2 September 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.v10i2.452

Fiber reinforced composite (FRC) is widely used to replace porcelain fused to metal (PFM) for patients who have lost teeth. Fiber reinforced composite is resin matrix protheses with fiber reinforced to get optimal strength. Glass fiber dental is often used because it does not require complex preparations, not sensitive to chemicals and moisture, but it has an expensive price for Indonesian people and limited availability. An alternative material such as glass fiber non dental can used. Mouthwash is used as an antiseptic and anti-plaque material on the oral cavity. Mouthwah can affect of water sorption of FRC. The aim of this study is to know effect of mouthwash on the absorption of water in non dental glass fiber - reinforced FRC. Sixty specimens divided into four groups (n=4), 2 groups with glass fiber dental soaked on the bisguanida and aquades, 2 groups with glass fiber non dental soaked on the bisguanida and quaternary ammonium. The data analyzed with Anova. Anova test showed that there is an influence of mouthwash bisguanide and quartenary ammonium compounds on the value of absorption of glass fiber reinforced composite water (p<0,05). Water sorption of FRC in bisguanide mouthwash is higher than quartenary ammonium compounds.

Co-Authors Adella Syvia Maharani Agustin Wulan Agustin Wulan Akhmad Kharis Nugroho Ariyani Faizah Budiono Budiono Catur Septommy Dana Ardianata Dendy Murdiyanto Dewi Arsih Sulistiani Diatri Nari Ratih Diyah Fatmasari Dwi Aji Nugroho, Dwi Dyah Irnawati Eko Hadianto Eko Hadianto, Eko Eko Sri Kunarti Endah Ariyati Eko Ningtyas Endang Wahyuningtyas Erna Prawita Setyowati Etny Dyah Harniati Gustina, Mara Harsini Harsini, Harsini Ikmal Hafizi Iwan Dwi Prahasto Iwan Dwi Prahasto Izfan Yulviansyah Karna Wijaya Leny Yuliatun Leny Yuliatun M.K. Herliansya M.K. Herliansya, M.K. Marsetyawan HNE Soesatyo N Nuryono N. Nuryono Nisaa, Khairun Nuryono Nuryono Nuryono Nuryono Nuryono Nuryono Pramudya Aditama Prihashinta Uswatun Hasanah Purwanti, Sari Purwanto Agustiono Purwanto Agustiono Raphael Tri Endra Untara Resti Efrata Eka Rethy Den Rini Dharmastiti Rini Dharmastiti S. Sunarintyas S. Sunarintyas, S. Sari Purwanti Siti Sunarintyas Siti Sunarintyas Soesatyo, Marsetyawan Heparis Nur Ekandaru Suryono Suryono . Tri Windarti Verani, Dhea Maurilla Wehartaty, Tineke Wibowo, Diva Agrita Dentisia Widowati Siswomihardjo Widya Asmara Widya Asmara Widya Asmara Widyapramana Widyapramana Widyapramana Widyapramana, Widyapramana Wijayanti Dwi Aastuti Yasnawi, Mohammad Imanuddin Yoga Yuniadi Yosaphat Bayu Rosanto Zwista Yulia Dewi

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