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PERANAN PENAMBAHAN ZIRKONIUM OKSIDA PADA MAHKOTA PROVISIONAL RESIN AKRILIK POLIMERISASI PANASPERANAN PENAMBAHAN ZIRKONIUM OKSIDA PADA MAHKOTA PROVISIONAL RESIN AKRILIK POLIMERISASI PANAS
No full textGIGI TIRUAN SEBAGIAN LEPASAN KERANGKA LOGAM KOMBINASI BAHAN FLEKSIBEL SEBAGAI UPAYAMEMENUHI KEBUTUHAN ESTETIK PADA GIGI PENYANGGA DENGAN RESESI GINGIVA
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PENATALAKSANAAN GIGI TIRUAN LENGKAP DENGAN LINGGIR DATAR DAN HUBUNGAN RAHANG KLAS III DISERTAI CEREBROVASCULAR ACCIDENT (LAPORAN KASUS)
No full textEfek Konsumsi Teh Hitam dan Jus Apel Terhadap Stabilitas Warna Laminate Veneer Resin Komposit Indirek
No full textLaminate veneer is a treatment in prosthodontic that is aesthetically pleasing and requires minimal preparation that can be fabricated with indirect resin composite, which is durable and low-cost, though this material has poor color stability. Due to the increasing consumption of black tea and apple juice, there was a need for this study to be taken out. This study aims to determine the effect of consumption of black tea and apple juice on colour stability. Indirect resin composite specimens were fabricated 20 mm in diameter and 1.5 mm in thickness and divided into 3 groups (n = 10). Specimens were immersed in 3 types of solutions: black tea, apple juice and aquadest as control. The color of specimens was measured before and after immersion using a color spectrophotometer. Statistical analysis was performed with univariate test, Mann-Whitney U test, Independent T-test, one-way ANOVA and LSD test. Mean delta E (ΔE) value for black tea is 1,381 ± 0,938 and ΔE = 6,803 ± 1,757 in apple juice. Black tea and apple juice reduced the color stability of indirect resin composite significantly with p = 0,001 (p < 0.05). The effect of immersion in both drinks differed significantly with p = 0,001 (p <0.05). Apple juice experienced the greatest reduction in color stability, followed by black tea, and lastly the control group. The difference in the effect of immersing black tea and apple juice was due to the difference in pH and major acid content
The Utilization of Eggshell as Reinforcing Material of Heat Cured Acrylic Resin Denture Base: Pemanfaatan Cangkang Telur Sebagai Bahan Penguat Basis Resin Akrilik Polimerisasi Panas
Get PDFHeat-cured acrylic resin is easily fractured and can be prevented by adding reinforcing materials of duck eggshell powder. Furthermore, it can be used as a biocompatible reinforcing material due to the high content of CaCO3. This study aims to determine the effect of adding 2.5% and 5% duck eggshells as reinforcement for the denture base with heat-cured acrylic resin on the transverse strength. The method is an laboratory experiments with a post-test only control design conducted on January 2022. The samples were made by adding a reinforcing agent of 2.5% and 5% heat-cured acrylic resin powder’s weight in a mould sized 65 x 10 x 2.5 ± 0.5 mm with 11 samples in each group. The curing process was executed at a temperature of 70°C for 90 minutes before increasing to 100°C for 30 minutes, and the transverse strength of acrylic resin was measured using the Universal Testing Machine. The sample tested using univariate analysis with the results of the average transverse strength in the control group 66.59 ± 1.88 MPa, after adding 2.5% duck eggshell 72.61 ± 3.05 MPa and 5% duck eggshell 86.14 ± 4.09. The one-way ANOVA and LSD tests showed significant results with p-value = 0.001 (p < 0.05) and 0.001 (p <0.05). The highest transverse strength value of heat-cured acrylic resin was found in the 5% duck eggshell group, followed by 2.5%, and lastly, the control group
The Proportion of Proto Malayan's And Deutro Malayan's Vertical Dimension Using Willis's Method, Mc.Gee's Method, And Golden Proportion Concept Among Students of Faculty of Denstistry In University of Sumatera Utara
No full textThe Effect of Immersing Alginate Impression in Chloroxylenol on Level of Staphylococcus Aureus and Dimensional Change of Cast
No full textProporsi Lebar Gigi Anterior Rahang Atas Terhadap Konsep Golden Proportion, Red Proportion Dan Preston’s Proportion Berdasarkantipe Wajah Pada Mahasiswa Fakultas Kedokteran Gigi Universitas Sumatera Utara
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