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All Journal Dentika Dental Journal Journal Of Vocational Health Studies
Marsetyawan Heparis Nur Ekanda Soesatyo
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Dentistry Health Professions

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EFFECT OF IMMERSION TIME TO MECHANICAL STRENGTH OF POLYVINYL ALCOHOL– HYDROXY APATITE COMPOSITE AS BIODEGRADABLE BONE PLATE : PENGARUH WAKTU PERENDAMAN TERHADAP KEKUATAN MEKANIS KOMPOSIT POLIVINIL ALKOHOL–HIDROKSI APATIT SEBAGAI FIKSASI FRAKTUR TULANG Mochammad Taha Ma’ruf; Widowati Siswomihardjo; Marsetyawan Heparis Nur Ekanda Soesatyo; Alva Edy Tontowi
Dentika: Dental Journal Vol. 17 No. 4 (2013): Dentika Dental Journal
Publisher : TALENTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (368.302 KB) | DOI: 10.32734/dentika.v17i4.1778

Abstract

Polymer based material such as Poly-L-Lactic-Acid (PLLA) have been used for titanium substitution. However, the last research indicates that it was not an ideal material as bone fracture fixation device. It is a challenge to develop other materials as biodegradable bone plate for titanium substitution, such as polyvinyl alcohol (PVA). In this study, polyvinyl alcohol has composited with Hydroxy apatite (HA) and reinforced with catgut fiber. The aim of this study was to know the effect of immersion time to mechanical strength of PVA– HA composite with catgut reinforced as biodegradable bone plate after biodegradation test for 30 and 60 days. Specimens were prepared for tensile and bending strength tests, immersed in phosphate buffered saline (PBS) solution with pH 7.4 at 370C. Specimens were weighed before and after biodegradation test, tensile and bending test were done after removed for 30 and 60 days. The result showed that PVAHA composite reinforced with catgut fiber has stable mechanical strength after 30 and 60 days biodegradation process. The mechanical strength decreased in 30 and 60 days in all intervention groups, but it still has adequate mechanical strength as biodegradable bone plate. In conclusion, PVA-HA composite reinforced with catgut fiber can be developed as biodegradable bone plate replace titanium and other commercial bone plate.
THE RELATIONSHIP BETWEEN DURATION OF DIALYSIS AND HISTORY OF BLOOD TRANSFUSION WITH HEPATITIS C SEROPREVALENCE IN HEMODIALYSIS PATIENTS: A CROSS-SECTIONAL STUDY AT GADJAH MADA UNIVERSITY ACADEMIC HOSPITAL Kurnia Fitriasari; Marsetyawan Heparis Nur Ekanda Soesatyo; Dewi Sulistyawati
Journal of Vocational Health Studies Vol. 9 No. 1 (2025): July 2025 | JOURNAL OF VOCATIONAL HEALTH STUDIES
Publisher : Faculty of Vocational Studies, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jvhs.V9.I1.2025.1-7

Abstract

Background: Hepatitis C Virus (HCV) is an RNA virus that causes hepatitis C disease. Hemodialysis patients are a group at high risk of becoming infected with the HCV. Based on prior research, the duration of hemodialysis has been identified as an independent risk factor for HCV. Risk factors for HCV transmission in hemodialysis patients can also include blood transfusions. Purpose: This research aimed to determine the relationship between the duration of dialysis and the history of blood transfusion with HCV seroprevalence in hemodialysis patients at Gadjah Mada University Academic Hospital. Method: This research utilized a cross-sectional research design. The research data were based on secondary data from the medical records of hemodialysis patients at Gadjah Mada University Academic Hospital. Result: The results were analyzed descriptively and statistically using the Chi-square test with significance (α = 0.05). Data obtained from this research showed that the HCV seroprevalence of hemodialysis patients at Gadjah Mada University Academic Hospital is 20.5%. The test results revealed a relationship between duration of dialysis with HCV seroprevalence in hemodialysis patients is a p-value = 0.021 (p-value < α), and a relationship between history of blood transfusion with HCV seroprevalence in hemodialysis patients is a p-value = 0.024 (p-value < α). Conclusion: The results of the Chi-square test showed a relationship between duration of dialysis and history of blood transfusion with HCV seroprevalence in hemodialysis patients at Gadjah Mada University Academic Hospital.
Co-Authors Alva Edy Tontowi Dewi Sulistyawati Kurnia Fitriasari Mochammad Taha Ma’ruf Widowati Siswomihardjo