Publications by authors named "Syaifudin A"
Article Synopsis
- Miniscrews, made from titanium (Ti), provide absolute anchorage in orthodontics but have several disadvantages, while polyaryletheretherketone (PEEK) may offer potential advantages as an alternative material.
- This study utilizes finite element analysis (FEA) to compare the biomechanical performance of Ti and PEEK miniscrews under various insertion angles and loads.
- Results indicate that while PEEK generates more stress in the bone compared to Ti, it presents a viable option for TAD fabrication based on its biomechanical performance insights.
Introduction: Diabetic foot ulcer disease, affecting 6.3% of the global population, necessitates crucial decisions regarding debridement and amputation, with substantial cost, morbidity, and mortality implications. This study's primary goal is to determine effective vascular examination modalities, including systolic blood pressure, vascular waveforms, and blood volume flow to guide optimal treatments for diabetic foot patients.
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- The study examines the use of Asymmetric stents for treating atherosclerotic diseases, focusing on the challenges posed by non-symmetric arterial obstructions caused by eccentric plaque.
- Using ANSYS for structural dynamic analysis, various stent deployment methods were tested to assess their impact on the interaction with the arterial layer.
- The findings suggest that the shape and components of the plaque significantly influence its vulnerability, while the stent's geometric structure and the inflation method have a lesser effect, although non-symmetric balloon inflation can increase risks.
The selection of stent and balloon type is decisive in the stenting process. In the treatment of an eccentric plaque obstruction, a symmetric expansion from stent dilatation generates nonuniform stress distribution, which may aggravate fibrous cap prone to rupture. This paper developed a new stent design to treat eccentric plaque using structural transient dynamic analysis in ANSYS.
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- The effectiveness of stents in treating vascular diseases is influenced by the physical properties of their surfaces, particularly how they change during deployment due to deformation and surface roughness.
- A finite element simulation was conducted to investigate these changes, focusing on two types of bare metal stents (Palmaz and Sinusoidal) and examining their performance with plaques of varying lengths.
- The study concluded that having the length of the stent equal to the length of the plaque resulted in minimal changes in surface roughness, making it the most favorable configuration, especially for the Sinusoidal stent.
A cross-sectional study was conducted on 200 commercial sex workers (CSWs) from two brothel communities in Central Java, Indonesia, to determine the seroprevalence of syphilis and HIV and characterize associated knowledge, beliefs, and risk-taking behaviors. A questionnaire was administered and blood drawn for HIV and syphilis serologies. Focus groups with a total of 20 women were also conducted at both communities to supplement survey data.
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