Prostodonsia (Sp.)

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Browsing Prostodonsia (Sp.) by Author "Arief Cahyanto"

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    A Characterization of Ceramic Dental Implant Coated with Carbonate Apatite
    (2020-08-10) FAUZIAH ERFIN; Rasmi Rikmasari; Arief Cahyanto
    Zirconia-based dental implant in Indonesia is rarely used, especially due to low demand. High production cost makes the price of each zirconia dental implant piece become expensive. The fabrication process of the dental implant using 3 mol% Yttria-stabilized Zirconia (3YSZ) as a starting powder, or being synthesized using ZrCl3 and YCl4 precursor were costly and complicated. The aim of this study is to investigate morphology and phase analysis in the ceramic dental implant which coated with carbonate apatite (CO3Ap). The industrial 3YSZ powder was compacted using a manual hydraulic press and sintered at 1500°C approximately to 11 mm pellet size. Specimens were pre-treated using 9% hydrofluoric acid (HF 9%) before coated by CO3Ap, while others without treatment as a control. Then, they were dipped into CO3Ap suspension and heat treated with temperature variable of 300°C or 500°C. Fabrication of specimen using manual hydraulic press creates monoclinic phase more than expected, while SEM discovered that the particle of the specimen has 130-500nm size. In conclusion, the effective method to coat the ceramic dental implant with CO3Ap was using 9% HF as a pre-treatment then calcinate in 300°C as confirmed in XRD and EDS.
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    Apatite Formation on Zirconia (Y-TZP) Coated with Carbonate Apatite in Simulated Body Fluid
    (2020-08-10) ASTRIE YUMEISA; Arief Cahyanto; Lisda Damayanti
    Abstract. Various bioactive calcium phosphates such as hydroxyapatite (HA) and carbonate apatite (CO3Ap) have been widely studied due to their biocompatibility and osteoconductivity when implanted into bone defects. CO3Ap has the ability to adapt bone structure and induce bone regeneration; so that it can be categorized as resorbable bioactive materials. CO3Ap induced much stronger response such as cell adhesion and actin ring formation to osteoclast-like cells rather than HA. The aim of this study is to evaluate the bioactivity on zirconia (Y-TZP) coated with CO3Ap using simulated body fluid (SBF). Twenty Y-TZP ZrO2 disks with a 12-mm diameter and 1-mm thickness were employed as the samples. The disks were divided into two groups which the control group without CO3Ap coating and tested group with CO3Ap coating. Disks samples are dipped into CO3Ap suspension for one minute and stored in 37°C incubator for 24 hours. The disks were soaked in SBF for 1, 4, and 7 day(s) at 36.5°C. The obtained apatite crystals were characterized by scanning electron microscopy (SEM). It was found that the apatite formation on the tested group was greater than the control group. The EDS pattern showed the presence of Ca and P on the control and tested group after SBF soaking, which indicate the apatite deposition on the disks’ surface. However, the Ca and P on the tested group was higher compared to the control group. The formation of apatite layer on the disks’ surface is bioactivity indicator of CO3Ap.