UMBUMB

SINERGISINERGI

Bone implants are medical procedures involving replacement or reconstruction of missing or damaged bones. The widely used bone cement is a polymethylmethacrylate (PMMA) based composite material. To improve bioactivity, PMMA is combined with hydroxyapatite (HA). Manual formation of bone implants can be time-consuming and prone to errors. Therefore, 3D printing technology is used to improve the quality of bone implants. This study aims to determine the effect of three parameters – perimeter speed, infill speed, and fill angle – on the dimensional accuracy of prints using a 3D printing machine. A response surface experiment design was used to determine the effect of these parameters on dimensional error. The results show that these three factors have no significant impact on the dimensional error, but the resulting error is still high. Therefore, it is necessary to adjust the design size before printing.

The study concludes that the tested machine parameters (perimeter speed, infill speed, and fill angle) do not significantly affect specimen dimensions.The 3D printing machine can produce specimens with relatively consistent dimensions within the tested parameter range.However, the resulting dimensional error remains substantial, indicating the need for further investigation into other factors influencing accuracy.Therefore, future research should focus on identifying and optimizing additional parameters to minimize dimensional errors in 3D-printed biocomposite materials.

Berdasarkan hasil penelitian ini, beberapa saran penelitian lanjutan dapat diajukan. Pertama, perlu dilakukan investigasi lebih mendalam mengenai pengaruh parameter mesin lain yang belum dieksplorasi, seperti suhu nozzle, kecepatan pendinginan, dan jenis material umpan, terhadap akurasi dimensi hasil cetak. Kedua, penelitian selanjutnya dapat berfokus pada pengembangan desain spesimen yang lebih kompleks dan representatif terhadap bentuk implan tulang yang sebenarnya, untuk menguji kemampuan mesin dalam menghasilkan geometri yang rumit dengan akurasi yang memadai. Ketiga, eksplorasi penggunaan material biokomposit alternatif dengan komposisi yang berbeda, seperti variasi persentase hidroksiapatit atau penambahan material penguat lainnya, dapat dilakukan untuk meningkatkan sifat mekanik dan bioaktivitas implan tulang yang dicetak 3D. Penelitian-penelitian ini diharapkan dapat memberikan pemahaman yang lebih komprehensif mengenai potensi dan keterbatasan teknologi 3D printing dalam pembuatan implan tulang yang berkualitas tinggi dan sesuai dengan kebutuhan pasien.

  1. THE EFFECT OF 3D PRINTING MACHINE PARAMETERS IN EXTRUSION PROCESS OF BIOCOMPOSITE MATERIALS (PMMA AND... doi.org/10.22441/sinergi.2018.2.003THE EFFECT OF 3D PRINTING MACHINE PARAMETERS IN EXTRUSION PROCESS OF BIOCOMPOSITE MATERIALS PMMA AND doi 10 22441 sinergi 2018 2 003
  2. Polymer Composites for Bone Reconstruction | IntechOpen. polymer composites bone intechopen open access... doi.org/10.5772/20657Polymer Composites for Bone Reconstruction IntechOpen polymer composites bone intechopen open access doi 10 5772 20657
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