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3D Planning and Printing of Patient Specific Implants for Reconstruction of Bony Defects
Published on: August 4, 2020
Maxillofacial reconstruction using custom-made artificial bones fabricated by inkjet printing technology
Hideto Saijo1, Kazuyo Igawa, Yuki Kanno
1Department of Oral and Maxillofacial Surgery, Faculty of Medicine, University of Tokyo, Tokyo, Japan.
This study explores the use of custom-made artificial bones created with inkjet printing technology for maxillofacial reconstruction. Traditional artificial bones often fail to match the exact dimensions of a patient's deformity and may not support bone growth effectively. The researchers used alpha-tricalcium phosphate powder and inkjet printing to create implants tailored to each patient's needs. These implants were implanted in ten patients, and the results showed good dimensional compatibility and reduced surgical time. CT scans indicated partial integration with the patient's natural bone tissue, and no serious complications were observed. The findings suggest that this new method could be a promising approach for future maxillofacial surgery.
Area of Science:
- Biomedical engineering
- Oral and maxillofacial surgery
- 3D printing in medicine
Background:
Maxillofacial deformities require reconstructive solutions that match anatomical dimensions and promote bone healing. Conventional artificial bones often lack dimensional compatibility and osteoconductivity. Prior research has shown that materials like alpha-tricalcium phosphate support bone regeneration. However, no existing artificial bones meet all clinical needs. That uncertainty drove the development of new fabrication methods. Customization remains a challenge in craniofacial surgery. No prior work had resolved the issue of precise dimensional matching. This gap motivated exploration of advanced manufacturing techniques.
Purpose Of The Study:
The goal was to assess a novel approach for maxillofacial reconstruction using custom-printed artificial bones. The specific problem addressed is the lack of dimensionally accurate and osteoconductive implants. The motivation stems from the need for implants that adapt to individual anatomies. The study aimed to test dimensional compatibility and surgical outcomes. It also sought to evaluate postoperative integration with host tissues. The researchers proposed that inkjet printing could enhance customization. This approach may reduce intraoperative adjustments. The study's outcomes could inform future implant design.
Main Methods:
The researchers used alpha-tricalcium phosphate powder as the material base. They applied inkjet printing technology to fabricate custom implants. The design process involved scanning patients' deformities for dimensional accuracy. Each implant was tailored to individual anatomical requirements. The implants were implanted in ten patients with maxillofacial deformities. Postoperative computed tomography scans assessed integration. Operation time was measured to evaluate surgical efficiency. The researchers monitored for adverse reactions and healing progress.
Main Results:
All implants demonstrated dimensional compatibility with patient anatomies. Operation time was shorter due to reduced size adjustments. Postoperative CT scans showed partial union with host bone tissues. No serious adverse reactions were reported. The implants remained stable during the observation period. These findings suggest potential for clinical application. The results support further studies on long-term integration. The data indicate that inkjet printing may improve surgical outcomes.
Conclusions:
The authors propose that inkjet-printed artificial bones offer dimensional compatibility. They suggest that this method may reduce surgical time and manipulation. The findings indicate partial integration with host bone tissues. No serious adverse effects were observed. The researchers propose that this approach warrants further clinical evaluation. These results support the potential of inkjet printing in maxillofacial surgery. The authors emphasize the need for larger trials to confirm outcomes. This method may represent a step toward personalized implant solutions.
Frequently Asked Questions
The artificial bones are custom-made using alpha-tricalcium phosphate and inkjet printing, allowing dimensional compatibility with patient-specific deformities.
Inkjet printing enables precise fabrication of implants, reducing the need for intraoperative size adjustments and improving surgical efficiency.
Alpha-tricalcium phosphate is known for its osteoconductive properties, which may support bone regeneration and integration with host tissues.
Computed tomography was used to assess postoperative integration of the artificial bones with host bone tissues.
Partial union between the artificial bones and host bone tissues was detected in postoperative computed tomography scans.
The authors suggest that these findings support further clinical studies to evaluate long-term outcomes and integration of inkjet-printed artificial bones.
