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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 Jenis dan Volumetrik Fiber terhadap Kekuatan Transversal Reparasi Plat Resin Akrilik Pramudya Aditama; Siti Sunarintyas; Widjijono Widjijono
Majalah Kedokteran Gigi Indonesia Vol 1, No 1 (2015): August
Publisher : Faculty of Dentistry, Universitas Gadjah Mada

Resin akrilik merupakan bahan yang sering digunakan dalam pembuatan basis gigi tiruan. Kelemahan resin akrilik adalah mudah patah. Salah satu cara untuk mengatasi masalah tersebut adalah dengan menambahkan polyethylene (PE) atau glass fiber. Tujuan dari penelitian ini untuk mengetahui pengaruh jenis dan volumetrik fiber terhadap kekuatan transversal reparasi plat resin akrilik. Penelitian ini menggunakan dua puluh lima plat resin akrilik kuring panas berukuran 65 x 10 x 2,5 mm. Subjek dipreparasi untuk membuat jarak 3 mm dan sudut bevel 45o. Subjek dibagi menjadi 5 kelompok, masingmasing kelompok terdiri dari 5 subjek. Kelompok 1 (kontrol) tanpa penambahan fiber, kelompok II dengan penambahan 3,7% v/v PE fiber, kelompok III dengan penambahan 7,4% v/v PE fiber, kelompok IV dengan penambahan 3,7% v/v E-glass fiber, dan kelompok V dengan penambahan 7,4% v/v E-glass fiber. Seluruh plat direndam dalam air destilasi selama satu hari pada suhu 37oC. Pengujian kekuatan transversal plat resin akrilik dengan menggunakan Universal Testing Machine dan data yang didapat dianalisis menggunakan ANAVA dua jalur dengan tingkat kepercayaan 95%. Rerata kekuatan transversal (MPa) reparasi plat resin akrilik yang diperkuat fiber: 3,7% v/v PE fiber (67,77±3,34); 7,4% v/v PE fiber (80,37±8,42); 3,7% v/v E-glass fiber (96,72±5,43); 7,4% v/v E-glass fiber (109,44±4,98); sedangkan reparasi plat resin yang tidak diperkuat fiber menghasilkan kekuatan transversal 56,27±4,7 MPa. Hasil analisis menggunakanANAVA dua jalur menunjukkan variabel jenis dan volumetrik fiber memberikan pengaruh signifikan (p<0,05), sedangkan interaksi antara jenis dan volumetrik fiber tidak berpengaruh signifikan (p>0,05). Uji post hoc Tukey menunjukkan perbedaan signifikan (p<0,05) untuk seluruh kelompok perlakuan. Penambahan E-glass fiber dalam reparasi plat resinakrilik mampu meningkatkan kekuatan transversal lebih tinggi dibandingkan dengan menggunakan PE fiber. Peningkatan volumetrik fiber dapat meningkatkan kekuatan transversal reparasi plat resin akrilik. Effect Of Type And Volumetric Fiber On Transverse Strength Of Acrylic Resin Plate Repair. Acrylic resin is the most common denture base material. A disadvantage of acrylic resin is that it is easily fractured. One way to resolve this problem is by adding polyethylene (PE) or glass fibers. The purpose of this research is to find out about the effect of type and volumetric fiber on transverse strength of acrylic resin plate repaired. The experiment involved twenty five plates of heat cured acrylic with the dimensions of 65 x 10 x 2.5 mm. The speciments were prepared to create a 3 mm gap and 45° bevel. The subjects were divided into 5 groups; each group consisted of 5. Group I (control) was without fiber reinforcement, group II reinforced with 3.7% v/v PE fiber, group III reinforced with 7.4% v/v PE fiber, group IV reinforced with 3.7% v/v E-glass fiber, and group V reinforced with 7.4% v/v E-glass fiber. All plates were soaked in distilled water for one day at 37° C temperature. The plates were tested for transverse strength with Universal Testing Machine and all data obtained were analyzed with two way ANOVA at 95% confidence level. The mean of transverse strength (MPa) of the acrylic resin plate repair reinforced with fiber: 3.7% v/v PE fiber was (67.77±3.34); 7.4% v/v PE fiber (80.37±8.42); 3.7% v/v E-glass fiber (96.72±5.43); 7.4% v/v E-glass fiber (109.44±4.98); while the transverse strength of the acrylic resin plate with no fiber reinforced was 56.27±4.7 MPa. Two way ANOVA analysis shows that type and volumetric fiber had significant effect (p<0.05), while the interaction between type and volumetric fiber had no significant effect (p>0.05). Tukey post hoc test shows significant difference (p<0.05) for all groups. The addition of E-glass fibers in the acrylic resin plate repaired increased the transverse strength higher than that with PE fibers. The increase in volumetric fibers might improve the transverse strength of the acrylic resin plate repaired.

Pengaruh konsentrasi cobalt chromium pada uji hemolisis sebagai implan gigi Yosaphat Bayu Rosanto; W. Widjijono; Teguh Triyono
Majalah Kedokteran Gigi Indonesia Vol 2, No 3 (2016): December
Publisher : Faculty of Dentistry, Universitas Gadjah Mada

The effect of concentration of cobalt chromium in hemolysis test for dental implant. Dental implants are used to replace tooth/teeth loss and its function. Cobalt chromium has ideal characteristics to be made as dental implants material. It is required that the material to be implanted must be biocompatible with cells and tissues. One of biocompatibility characteristics is hemocompatibility. Hemocompatibility of materials can be observed with hemolysis test. Thus the purpose of this research is to know whether cobalt chromium as dental implants material affect the hemolysis of rabbit blood or not. This research was done with rabbit blood (Oryctolagus cuniculus) and devided into 3 groups (treatment, positive and negative control). The tested material was cobalt chromium Remanium® GM 800, a product from Dentaurum. The contact between blood and material was done with ASTM-F075 hemolysis test. Cobalt chromium was not hemolytic at 2,5%, 5%, and 10% of concentration, slightly hemolytic at 20% of concentration, and hemolytic at 40% and 80% of concentration. The conclusion of this research was variety of concentration of cobalt chromium affected hemolysis percentage signi cantly.ABSTRAKImplan gigi digunakan untuk mengganti gigi yang hilang untuk dan dapat mengembalikan fungsi gigi. Cobalt chromium memiliki sifat-sifat yang memenuhi persyaratan sebagai material implan. Material yang diimplankan dalam tubuh harus memiliki sifat biokompatibilitas. Salah satu sifat biokompatibilitas yang harus dimiliki material yang diimplankan dalam tubuh adalah sifat hemokompatibilitas. Sifat hemokompatibilitas dapat diketahui dengan uji hemolisis. Penelitian ini bertujuan untuk mengetahui ada/tidaknya pengaruh logam cobalt chromium sebagai material implan gigi terhadap hemolisis pada darah kelinci. Penelitian ini dilakukan menggunakan sampel darah yang didapat dari kelinci (Oryctolagus cuniculus) yang dibagi menjadi 3 kelompok, yaitu perlakuan, kontrol positif dan negatif. Bahan penelitian yang diuji adalah cobalt chromium Remanium GM 800 produksi Dentaurum. Kontak darah dengan bahan uji dilakukan menggunakan uji hemolisis ASTM-F075. Hasil penelitian menunjukkan material logam cobalt chromium tidak menimbulkan hemolisis pada konsentrasi 2,5%, 5%, dan 10%, menimbulkan hemolisis ringan pada konsentrasi 20%, dan hemolisis pada konsentrasi 40% dan 80%. Kesimpulan dari penelitian ini adalah perbedaan konsentrasi logam cobalt chromium berpengaruh secara signikan terhadap persentase hemolisis.

Pengaruh komposisi beberapa glass fiber non dental terhadap kelarutan komponen fiber reinforced composites Ariyani Faizah; W. Widjijono; N Nuryono
Majalah Kedokteran Gigi Indonesia Vol 2, No 1 (2016): April
Publisher : Faculty of Dentistry, Universitas Gadjah Mada

The effect of composition glass fiber non dental on water solubility of fiber reinforced composites. E glass fiber dental is one of the most used dental fibers in several applications in the dental field. However, the available of E glass fiber dental in Indonesia is very limited. A variety of types of non-dental glass fiber material is easily found as the materials engineering. The purpose of the study was to evaluate the effect of composition non dental glass fiber on the component solubility of FRC. The materials used in the research was E glass fiber dental (Fiber splint, Polydentia SA, Switzerland), composition A non-dental glass fiber (LT, China), composition B (CMAX, China), composition C (HJ, China), flowable composite (Charmfill Flow, Denkist, Korea) and silane coupling agent (Monobond S, Ivoclair Vivadent, Liechtenstein). The subject was divided into 4 groups. Component solubility test was based on the ISO 4049. The result was then analyzed with one way ANOVA (α=0,05). The result of the research showed that on the average percentage of the solubility (%), the lowest was on the group of E glass fiber dental (0.476±0.03) and the highest was on the non dental glass fiber C (0.600±0.01). The result of the one way ANOVA test showed a significant difference between the compositiom fiber on the component solubility. The conclusion the research was that low content of Na2O K2O, CaO and MgO decreased the component solubility of FRC.ABSTRAKE glass fiber dental adalah fiber yang sering digunakan di kedokteran gigi. Ketersediaan E glass fiber di Indonesia masih sangat terbatas. Berbagai jenis bahan glass fiber non dental banyak ditemukan dipasaran sebagai material engeenering dengan harga yang relatif murah sehingga diharapkan dapat digunakan sebagai alternatif pengganti E glass fiber dental. Komposisi glass fiber non dental hampir sama dengan E glass fiber dental. Komposisi berpengaruh terhadap sifat mekanis dan sifat-sifat kimia fiber. Komposisi glass fiber seperti Na2O dan K2O akan meningkatkan ketahanan terhadapap air. Tujuan dari penelitian ini adalah mengetahui pengaruh komposisi glass fiber non dental terhadap kelarutan komponen. Bahan yang digunakan dalam penelitian ini adalah E glass fiber dental (Fiber-splint, Polydentia SA, Switzerland), glass fiber non dental komposisi A (LT, China), komposisi B (CMAX, China), komposisi C (HJ, China), flowable komposit (CharmFill Flow, Denkist, Korea) dan silane coupling agent (Monobond S, Ivoclar Vivadent, Liechtenstein). Subjek dibagi dalam 4 kelompok untuk dilakukan uji kelarutan berdasarkan ISO 4049. Hasil yang diperoleh dianalisis menggunakan ANAVA satu jalur (a = 0,05). Hasil penelitian menunjukkan rerata kelarutan komponen (%) yang terendah pada kelompok E-glass fiber dental (0,476±0,03) dan hasil tertinggi pada glass fiber non dental C (0,600±0,01). Hasil uji Anava satu jalur menunjukkan perbedaan yang bermakna antara komposisi fiber pada kelarutan komponen (p<0,05). Kesimpulan penelitian adalah komposisi Na2O dan K2O serta CaO dan MgO yang rendah dapat menurunkan sifat kelarutan komponen dari fiber reinforced composites.

Penentuan konsentrasi stainless steel 316L dan kobalt kromium remanium GM-800 pada uji GPMT Ikmal Hafizi; W. Widjijono; Marsetyawan Heparis Nur Ekandaru Soesatyo
Majalah Kedokteran Gigi Indonesia Vol 2, No 3 (2016): December
Publisher : Faculty of Dentistry, Universitas Gadjah Mada

Concentration determination of stainless steel 316L and cobalt chromium remanium GM - 800 on GPMT test. Dentistry had used metals such as cobalt chromium and stainless steel in maxillofacial surgery, cardiovascular, and as a dental material. 316L stainless steel is austenistic stainless steel which has low carbon composition to improve the corrosion resistance as well as the content of molybdenum in the material. Cobalt chromium (CoCr) is a cobaltbased alloy with a mixture of chromium. Density of a metal cobalt chromium alloy is about 8-9 g/cm3 that caused metal interference relatively mild. Remanium GM-800 is one type of a cobalt chromium alloy with the advantages of having high resistance to fracture and high modulus of elasticity. This study aims to determine the exact concentration used in 316L stainless steel and cobalt chromium GM-800 as the GPMT test material. Subjects were cobalt chromium Remanium GM-800 and 316L stainless steel concentration of 5%, 10%, 20%, 40% and 80%. Patch containing stainless steel or cobalt chromium paste was af xed for 24 hours each on three experimental animals, then the erythema and edema were observed using the Magnusson and Kligman scale. In the study, concentration of 5% is the concentration recommended for stainless steel 316L and cobalt chromium GM-800 as material in challenge phase GPMT test, while the concentration of 40% is the concentration recommended for stainless steel 316L and cobalt chromium GM-800 in the induction phase.ABSTRAKDunia kedokteran gigi banyak menggunakan logam pada pembedahan maxillofacial, cardiovascular, dan sebagai material dental. Logam yang banyak digunakan antara lain adalah kobalt kromium dan stainless steel. Stainless steel 316L merupakan austenistic stainless steel yang memiliki komposisi karbon rendah sehingga dapat meningkatkan ketahanan terhadap korosi sama halnya dengan kandungan molybdenum pada material tersebut. Kobalt kromium (CoCr) adalah cobalt-based alloy dengan campuran chromium. Kepadatan (density) dari logam campur kobalt kromium adalah sekitar 8-9 gram/cm3 menyebabkan logam campur ini relatif sangat ringan. Remanium GM-800 merupakan salah satu jenis alloy kobalt kromium dengan kelebihan memiliki resistensi terhadap fraktur yang tinggi serta modulus elastisitas yang tinggi. Penelitian ini bertujuan untuk mengetahui konsentrasi tepat yang digunakan pada stainless steel 316L dan kobalt kromium GM-800 sebagai bahan uji GPMT. Subjek penelitian adalah kobalt kromium Remanium GM800 dan stainless steel 316L konsentrasi 5%, 10%, 20%, 40%, dan 80%. Patch berisi pasta stainless steel atau kobalt kromium ditempelkan selama 24 jam masing-masing pada 3 hewan coba, selanjutnya dilakukan observasi eritema dan edema dengan menggunakan skala Magnusson dan Kligman. Pada penelitian, konsentrasi 5% merupakan konsentrasi yang direkomendasikan untuk stainless steel 316L dan kobalt kromium GM-800 sebagai konsentrasi tahap challenge uji GPMT, sedangkan konsentrasi 40% merupakan konsentrasi yang direkomendasikan untuk logam stainless steel 316L dan kobalt kromium GM-800 tahap induksi.

Effect of glass fiber non-dental’s length and position on the flexural strength of FRC Adella Syvia Maharani; Widjijono Widjijono; Endang Wahyuningtyas
Majalah Kedokteran Gigi Indonesia Vol 5, No 1 (2019): April
Publisher : Faculty of Dentistry, Universitas Gadjah Mada

Glass fiber non-dental has a similar composition to E-glass fiber dental that commonly used as fiber reinforced composite (FRC) materials in resin bonded prosthesis. Fiber effectiveness can be determined by the length and the position. The aim of this study was to examine the effect of glass fiber non dental’s length and position on the flexural strength of FRC in resin bonded prosthesis. This study has been done used 36 FRC samples with beam shaped (15 mm x 2 mm x 2 mm). Fiber reinforced composite samples were consisted of 9 groups (a combination between length: 4 mm, 6 mm, and 12 mm and position: compression, neutral, tension zone). The flexural strength was tested by universal testing machine and statistically analyzed using two-way ANOVA (p<0.05). The result showed that the lowest (compression, 4 mm) and the highest (tension, 12 mm) flexural strength were 104.30 ± 13.90 MPa and 166.18 ± 8.59 MPa. The two-way ANOVA test showed that variation of position, length, and interaction between placement-length had a significant effect on the flexural strength (p<0.05). The conclusion of this study was fiber position on compression zone with 4 mm length had the lowest flexural strength. In addition, fiber position on tension zone with 12 mm length had the highest flexural strength.

Enhancing the impact strength of acrylic resin base plate by adding non-dental E-glass fiber Mara Gustina; Widjijono Widjijono; Endang Wahyuningtyas
Majalah Kedokteran Gigi Indonesia Vol 6, No 2 (2020): August
Publisher : Faculty of Dentistry, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/majkedgiind.42939

Non-dental glass fiber is one of the materials that can be used to increase the impact strength of a acrylic resin base plate, containing a similar composition to that of dental e-glass fiber. Orientation and positions of fiber affect the reinforcement effectiveness. This research aimed to examine the effect of the orientation of non-dental glass fiber in the compression position on the impact strength of an acrylic resin base plate. The research was conducted on 16 acrylic resin plates with fiber (65 mm x 10 mm x 2.5 mm) addition. The samples were divided into 4 groups (combination of different woven orientation unidirectional, bidirectional woven in the compression position, and control). The material used in this study was heat-cured acrylic resin QC-20 brand, non-dental glass fiber (without any brand). Impact strength was tested using an impact testing machine. The data obtained were analyzed using one-way ANOVA test and LSD (p<0.05). In this research the impact strength of the base plate with the addition of fiber increased 8.54 ± 2.21; 13.21 ± 2.34; 16.81 ± 2.80 kJ/m2 compared to that of the control group, i.e. 4.98 ± 1.05 kJ/m2. One-way ANOVA test showed a significant effect (p<0.05) of the fiber orientation variations on the compression position. This research concluded that the addition of nondental e-glass fiber (composed of SiO252.56-56.88%), diameter 17.12–20.03 µm) in the compression zone increases theimpact strength of acrylic resin base plate. Fibers with unidirectional orientationprovides the highest increase in the impact strength of acrylic resin base plate.

Effect of Co-Cr alloy recasting on the fracture toughness Resti Efrata Eka; Rini Dharmastiti; Widjijono Widjijono
Majalah Kedokteran Gigi Indonesia Vol 7, No 1 (2021): April
Publisher : Faculty of Dentistry, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/majkedgiind.53689

Frame denture generally uses Co-Cr alloy. However, alloy is expensive, so dental laboratories use residual sprue casting for recasting. The purpose of this study was to determine the effect of Co-Cr alloy recasting on fracture toughness. This was a laboratory experiment, with five sample groups, namely R0: 100% of new alloys; R1: 50% one-time recasting procedure and 50% new alloys, R2: 50% two-time recasting procedure and 50% new alloys, R3: 50% three-time recasting procedure and 50% new alloys, R4: 50% four-time recasting procedure and 50% new alloys. Fracture toughness was tested using a universal testing machine; the data were analyzed by One-Way Anova test and LSD (p>0.05). The results showed that the fracture toughness was 233.103 MPa-m1/2 in R4, and the highest was 242.435 MPa-m1/2 in R0. The results of the analysis by the LSD test on fracture toughness showed that there were no significant differences in R0 with R1 and R2, but there were significant differences between R0 with R3 and R4. There was a decrease after recasting in each group because of the missing elements of the Co-Cr alloy. The percentage of each element decreased due to oxidation and evaporation during heating. There was a change in the composition of the Co-Cr alloy in R3 and R4. There was a decrease in the fracture toughness. Variation in recasting frequency of Co-Cr alloy affected the fracture toughness. In each sample groups, the fracture toughness of Co-Cr alloy decreased after recasting.

Ekspansi termal linier dan residu malam inlei gigi dengan komponen parafin Indonesia Dyah Irnawati; Widjijono Widjijono; Harsini Harsini
Jurnal Teknosains Vol 10, No 1 (2020): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.46548

Inlay wax is used for pattern of metallic inlays, crowns, and fixed partial dentures. Inlay wax must have a linear thermal expansion (LTE) and a residue that comply the standards. Inlay wax contains paraffin, carnauba, and beeswax. Paraffin and beeswax are produced in Indonesia. This study aims to examine the effect of the inlay wax compositions with paraffin and beeswax Indonesia on the LTE and residue properties. The research materials are paraffin (Pertamina, Balikpapan), beeswax (SEA, Yogyakarta), carnauba wax (Brataco Chemicals, Yogyakarta), and inlay wax (GC, Japan). Five inlay wax compositions are made with a ratio of paraffin, carnauba, and beeswax 60: 35: 5 (K-60), 65: 30: 5 (K-65), 70: 25: 5 (K-70), 75:20 : 5 (K-75), and 80: 15: 5 (K-80) (% w/w). The waxes were melted at 75 ± 5 oC then moulded for the TLE (267x6.35 x6.35 mm) and the residue (1 g) test specimens (n=4). The LTE and residue specimens were also made of paraffin, carnauba wax, beeswax, and commercial wax (n = 4). The LTE and residue tests were carried out based on ANSI/ADA specification No.4. Data were statistically analyzed by analysis of variance and LSD (α = 0.05). Anava test results showed that composition and temperature had a significant effect on LTE (p <0.05) and composition had a significant effect on residues (p <0.05). The LSD test results showed a significant difference in LTE of the K-75 group with other groups and the residues of the K-75 group and K-80 group with other groups (p <0.05). Inlay wax compositions with high paraffin concentrations have high LTE and residue. The value of LTE and residue of inlay wax with paraffin and beeswax from Indonesia are in accordance with the ANSI/ADA specification no. 4.

Pengaruh Penambahan Polyethylene Fiber Dan Serat Sisal Terhadap Kekuatan Fleksural Dan Impak Base Plate Komposit Resin Akrilik Eko Hadianto; Widjijono Widjijono; M.K. Herliansya
Insisiva Dental Journal: Majalah Kedokteran Gigi Insisiva Vol 2, No 2 (2013)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/di.v2i2.577

Resin Akrilik Menjadi Pilihan Untuk Pembuatan Gigi Tiruan Lepasan Karena Harganya Relatif Murah, Mudah Direparasi Dan Proses Pembuatan Mudah. Kelemahan Resin Akrilik Adalah Terbatasnya Terhadap Kekuatan Fleksural Dan Impak. Tujuan Dari Penelitian Ini Adalah Untuk Mengetahui Pengaruh Penambahan Polyethylene Fi ber Dan Serat Sisal Dengan Konsentrasi 1,6% Berat Terhadap Kekuatan Fleksural Dan Impak Basis Gigi Tiru an Resin Akrilik. Penelitian Ini Menggunakan Resin Akrilik Kuring Panas Merek Qc 20 Dengan Ukuran 65x10x2,5 Mm Untuk Uji Fleksural Dan 65x10x8 Mm Untuk Uji Impak. Sampel Penelitian Masing-Masing Terbagi Menjadi 3 Kelompok, Setiap Kelompok Terdiri Dari 4 Subyek. Kelompok I Tanpa Penambahan Fiber, Kelompok Ii Dengan Penambahan Polyethylene Fiber, Kelompok Iii Dengan Penambahan Serat Sisal. Seluruh Plat Resin Akrilik Direndam Di Dalam Air Destilasi Selama 24 Jam Pada Suhu 370c. Pengujian Kekuatan Fleksural Menggunakan Universal Testing Machine Dan Pengujian Kekuatan Impak Menggunakan Metode Charpy. Analisis Data Menggunakan One Way Anova Dengan Tingkat Kepercayaan 95% (Α=0,05) Dan Analisis Lsd. Hasil Penelitian Menunjukkan Rerata Kekuatan Fleksural (Mpa) Tanpa Penambahan Fiber (109,79±5,93);Penambahan Polyethylene Fiber (134,18 ±3,80); Serat Sisal (170,15±5,50). Pada Kekuatan Impak (Kj/M2) Tanpa Penambahan (4,45±1,95) Penambahan Polyethylene Fiber (60,79±26,49); Penambahan Serat Sisal (16,23±3,02). Hasil Analisis One Way Anova Menunjukkan Pengaruh Bermakna Akibat Penembahan Fiber Terhadap Kekuatan Fleksural Dan Impak Base Plate Resin Akrilik (P0,05). Analisis Lsd Menunjukkan Perbedaan Bermakna Rerata Kekuatan Fleksural Antar Kelompok (P0,05). Pada Hasil Uji Impak Menunjukkan Bahwa Rerata Kelompok Tanpa Fiber Berbeda Bermakna Dengan Kelompok Dengan Penambahan Fiber (P0,05), Dan Antara Kelompok Penambahan Polyethylene Fiber Dengan Penambahan Serat Sisal Tidak Berbeda Bermakna. Kesimpulan Dari Penelitian Ini Adalah Terdapat Peningkatan Kekuatan Fleksural Dan Impak Base Plate Komposit Resin Akrilik Pada Penambahan Polyethylene Fiber Dan Serat Sisal. Base Plate Dengan Penguat SeratSisal Memiliki Rerata Kekuatan Fleksural Paling Tinggi, Sedangkan Base Plate Dengan Penguat Polyethylene Fi ber Memiliki Rerata Kekuatan Impak Tertinggi.

Pengaruh Kombinasi Posisi Fiber Terhadap Kekuatan Fleksural dan Ketangguhan Retak Fiber Reinforced Composite Polyethylene Widyapramana Widyapramana; Widjijono Widjijono; S. Sunarintyas
Insisiva Dental Journal: Majalah Kedokteran Gigi Insisiva Vol 2, No 2 (2013)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/di.v2i2.569

Kehilangan gigi akibat karies, trauma, kondisi sistemik dan penyakit periodontal, dapat menyebabkan gangguan fungsional terutama pada saat digunakan untuk pengunyahan. Restorasi gigi tiruan cekat (GTC) secara direct yang menggunakan material komposit dengan penguatan fiber sering disebut sebagai fiber reinforced composite (FRC). UHMWPE merupakan non-impregnated polyethylene fiber yang mempunyai kekuatan fleksural lebih baik dari Pre-impregnated glass fiber. Penelitian ini bertujuan untuk mengetahui pengaruh kombinasi posisifiber terhadap kekuatan fleksural dan ketangguhan retak (fracture toughness) FRC UHMWPE. Penelitian ini merupakan jenis penelitian eksperimental laboratoris. Bahan penelitian menggunakan fiber Polyethylene (Construct, Kerr, USA) lebar 2mm, resin komposit flowable (Filtek Z350 XT 3M ESPE, USA), silane (RelyX 3M ESPETMSil, Germany). Sampel dalam penelitian ini adalah batang polyethylene fiber reinforced composite (FRC) dengan ukuran 2 x 2 x 25 mm terbagi dalam 3 kelompok kombinasi posisi fiber. Kelompok pertama adalah kombinasi posisi compression – neutral, kelompok kedua posisi neutral – tension dan kelompok ketiga posisi compression – tension dengan jumlah total sampel adalah 18. Sampel FRC diuji dengan menggunakan universal testing machine untuk mengetahui kekuatan fleksural (Mpa) dan ketangguhan retak/fracture toughness (MPa-m1/2). Perbedaan pengaruh diukur menggunakan analisis data Anova 1 jalur dan LSD (p0,05). Hasil uji statistik pada sampel FRC menunjukkan terdapat pengaruh perbedaan yang bermakna pada semua sampel yangdiuji p=0,00. Sampel batang polyethylene fiber reinforced composite (FRC) dengan kombinasi posisi compression – tension memiliki kekuatan fleksural 189 MPa dan ketangguhan retak 91,08 MPa-m1/2 tertinggi dibandingkan dengan kelompok sampel yang lainnya. Terdapat pengaruh perbedaan kombinasi posisi fiber polyethylene pada sampel FRC UHMWPE terhadap kekuatan fleksural dan ketangguhan retak (fracture toughness). Berdasarkan hasil uji sampel tersebut dapat dikatakan bahwa kombinasi posisi fiber compressiontension pada aplikasi gigi tiruan cekat (GTC) dapat memberikan kekuatan fleksural 189 Mpa yang optimal dan mendekati rerata tekanan pengunyahan sebesar 193 Mpa.

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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