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Tape-casting technique can prepare beta-TCP sheets with uniform thickness and flexibility
Yasuhiro Tanimoto1, Tohru Hayakawa, Kimiya Nemoto
1Department of Dental Materials, Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo, 2-870-1 Sakaecho Nishi, Matsudo, Chiba 271-8587, Japan. tanimoto@mascat.nihon-u.ac.jp
Summary
A novel tape-casting method successfully produced flexible beta-tricalcium phosphate (beta-TCP) sheets for bone substitutes. This technique allows for precise thickness control and free-form shaping without expensive equipment.
Area of Science:
- Biomaterials Engineering
- Ceramic Science
- Orthopedic Materials
Background:
- Bone substitutes are crucial for skeletal defect repair.
- Developing versatile and cost-effective fabrication methods for bone substitute materials is essential.
Purpose of the Study:
- To introduce a new tape-casting fabrication technology for producing flexible beta-tricalcium phosphate (beta-TCP) sheets.
- To evaluate the structural and mechanical properties of the fabricated beta-TCP sheets.
Main Methods:
- A slurry of beta-tricalcium phosphate (beta-TCP) powder, binder, and plasticizer was prepared.
- The slurry was cast into thin sheets using a doctor blade system.
- Structural analysis was performed using X-ray diffraction and Fourier transform infrared spectrometry.
- Surface morphology was examined via field-emission scanning electron microscopy.
- Mechanical properties were assessed through tensile stress-strain testing.
Main Results:
- Flexible beta-TCP sheets with a thickness of approximately 0.21 mm were successfully fabricated.
- The tape-casting method preserved the crystalline structure of beta-TCP.
- The sheets exhibited a flat, microgranular surface.
- The material demonstrated ductile properties with nonlinear behavior before fracture.
Conclusions:
- Tape casting is an effective and accessible method for producing thin, flexible beta-TCP sheets.
- This fabrication technique offers precise thickness control and adaptability for complex shaping.
- The resulting flexible beta-TCP sheets hold promise for advanced bone substitute applications.