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All Journal Jurnal Kedokteran Gigi Universitas Padjadjaran Padjadjaran Journal of Dentistry Jurnal Material Kedokteran Gigi
Arifzan Razak, Arifzan
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Biochemistry, Genetics & Molecular Biology Dentistry Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Public Health

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Perbedaan kekuatan impak mahkota pasak prefabricated logam dengan mahkota pasak prefabricated non logamThe difference of impact strength between prefabricated metal post crown and prefabricated non-metal post crown Ariyanti, Annisa Tri; Cevanti, Twi Agnita; Razak, Arifzan
Jurnal Kedokteran Gigi Universitas Padjadjaran Vol 30, No 1 (2018): April
Publisher : Fakultas Kedokteran Gigi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (464.38 KB) | DOI: 10.24198/jkg.v30i1.18183

Abstract

Pendahuluan: Gigi yang direstorasi dengan menggunakan mahkota pasak menunjukkan ketahanan fraktur akar yang lebih rendah dibandingkan dengan gigi yang masih vital. Gigi yang masih vital memiliki ketahanan yang paling tinggi diikuti pasak prefabricated resin fiber dan pasak prefabricated stainless steel. Bahan pasak logam memiliki sifat mekanik seperti modulus elastisitasnya yang tinggi daripada bahan pasak non logam yang dapat mempengaruhi kekuatan impak bahan pasak. Kekuatan impak atau kekuatan benturan didefinisikan sebagai energi yang diperlukan untuk mematahkan suatu bahan dengan gaya benturan. Penelitian ini bertujuan untuk mengetahui perbedaan kekuatan impak antara mahkota pasak prefabricated bahan titanium. Metode: Sebanyak 6 sampel gigi premolar dengan mahkota pasak prefabricated bahan resin fiber dengan rahang atas yang telah diobturasi dan dibagi kedalam 2 kelompok: kelompok I adalah kelompok yang akan diberikan pasak prefabricated bahan resin fiber (n=3), kelompok II dengan pasak prefabricated bahan titanium(n=3), kemudian ditumpat dengan bahan core build-up dari komposit. Semua kelompok ditanam di balok besi yang berbentuk persegi panjang. Selanjutnya dilakukan uji impak menggunakan mini impact tester type KRY sampai sampel patah. Hasil: Rerata kelompok pasak prefabricated bahan resin fiber adalah 1,9267 ± 0,99203 J/mm2 sedangkan kelompok pasak prefabricated bahan titanium adalah 5,7567 ± 0,41477 J/mm2. Independent sample t test menunjukkan ada perbedaan pada semua kelompok. Simpulan: kekuatan impak antara mahkota prefabricated bahan resin fiber lebih rendah daripada kekuatan impak mahkota pasak prefabricated bahan titanium. ABSTRACTIntroduction: Teeth restored prefabricated post crown show lower resistance to root fracture compared to with vital teeth. Vital teeth are having the highest resistance followed by prefabricated fibre resin postand prefabricated stainless steel post. The metal post higher has mechanical properties such as its high elastic modulus rather than a nonmetallic post which affect the impact strength of the material. The impact strength is defined as the energy required to break material with impact force. This study was aimed to determine the difference between the impact strength of prefabricated resin fibre post crown and prefabricated titanium fibre post crown Methods: Six obturated mandibular premolars with prefabricated fibre resin post were divided into two groups: group I was given a prefabricated fibre resin post (n = 3); group II was given a prefabricated titanium post (n = 3). They were all then filled with build-up core composite material. All groups were planted in an iron rectangular block. Furthermore, the impact test was performed using a mini impact tester (KRY type) until all samples broken. Results: The average impact strength of the post crown with prefabricated resin fiber material was 1.9267 ± 0.99203 J/mm2, while prefabricated titanium was 5.7567 ± 0.41477 J/mm2. Independent sample t test shows there were differences in all groups. Conclusion: The impact strength of prefabricated resin fibre post crown was lower than the impact strength of the prefabricated titanium post crown.Keywords: Impact strength, prefabricated post resin fiber, prefabricated post titanium.
Efektvitas Diet Kombinasi Susu Kedelai dan Tepung Kulit Cangkang Kerang Hijau dalam Meningkatkan Panjang Lengkung Rahang Prameswari, Noengki; Razak, Arifzan; Mulawarmanti, Dian
Jurnal Material Kedokteran Gigi Vol 2 No 1 (2013): JMKG Vol 2 No 1 Maret 2013
Publisher : Ikatan Peminat Ilmu Material dan Alat Kedokteran Gigi (IPAMAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (327.891 KB)

Abstract

Calcium and magnesium are the important nutrients especially for bone and teeth growth. Cow’s milk has a high calcium, but some people cannot consume it. Soy milk as a cow’s milk alternative has a low calcium, so it might be combined with green mussel shell flour which has a high calcium. To compare diet cow’s milk, soy milk, and combination diet soy milk with green mussel shell flour to increase length of arch. Thirty two 3 weeks old male wistar rats, each weighting between 50-80 grams. This research used post test only control group design. They were randomly divided into 4 groups. K1 group was given aquadest personde 0,0225ml/gBB/day. K2 group was given cow’s milk personde 0,0225ml/gBB/day. K3 group was given soy milk personde 0,0225ml/gBB/day. K4 group was given soy milk personde 0,0225ml/gBB/day with 0,04mg/gBB green mussel shell flour. After 8 weeks, all rats were killed,took their mandible, and and measuredlength of arch by cephalometry analysis. Data was analyzed using one way Anova (p=0,05) showed significant increasing of the length of arch by cephalometry analysis compare to control group.0,00 (p>0,05). Conclusion: Combination of green mussel shell flour with soy milk has proved to increase length of arch by cephalometry analysis in mandible growth.
Transversal strength of heat-cured acrylic resin after immersion in Annona muricata L. effervescent extract Kusumawardani, Chaterina Diyah Nanik; Razak, Arifzan; Ariestania, Vivin; Lubis, Raysha Teres
Padjadjaran Journal of Dentistry Vol 35, No 2 (2023): July 2023
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol35no2.47019

Abstract

ABSTRACTIntroduction: Heat-cured acrylic resin is one of the most widely used denture bases. Patients need to keep the removable dentures clean in order for them to have no adverse impacts. Natural ingredients, such as Anonna muricata L., are known for their benefits and can be used as a denture cleanser, but their effect towards mechanical properties needs to be studied. The objective of this study is to analyze the role of Anonna muricata L. effervescent extract with various concentrations (25, 35, and 45%) on the transversal strength of heat-cured acrylic resin. Methods: The samples were twenty eight heat-cured acrylic resin plates with a size of 65x10x2.5 mm randomly divided into four groups. The control group (immersed in distilled water), the 25, 35, and 45%, were immersed for fifteen minutes three times a day for ten days. The transversal strength was measured by the Universal Testing Machine (Shimadzu) loaded at 1kN with a constant control rate of 1 mm/min and analyzed by Kruskal-Wallis. Results: The average transversal strength of the control group was 118.59 MPa, followed by 25% with 114.35 MPa, 35% with 117.28 MPa, and 45% with 111.32 MPa. Based on Kruskal-Wallis, there were no significant differences with a significant value p>0.05 (p=0.886). Conclusion: The immersion of heat-cured acrylic resin in the extract of Anonna muricata L. effervescent does not affect the transversal strength of the material.
Co-Authors Ariestania, Vivin Ariyanti, Annisa Tri Dian Mulawarmanti Ida Ayu Putu Sri Widnyani Kusumawardani, Chaterina Diyah Nanik Lubis, Raysha Teres Noengki Prameswari