scholarly journals 3D Printing of Silk Fibroin for Biomedical Applications

Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 504 ◽  
Author(s):  
Qiusheng Wang ◽  
Guocong Han ◽  
Shuqin Yan ◽  
Qiang Zhang
Keyword(s):  
3D Printing ◽  
Silk Fibroin ◽  
Three Dimensional ◽  
Chemical Components ◽  
Technological Evolution ◽  
Multiple Processes ◽  
Printing Technique ◽  
Emerging Issues ◽  
Good Biocompatibility ◽  
3D Printing Technique

Three-dimensional (3D) printing is regarded as a critical technological-evolution in material engineering, especially for customized biomedicine. However, a big challenge that hinders the 3D printing technique applied in biomedical field is applicable bioink. Silk fibroin (SF) is used as a biomaterial for decades due to its remarkable high machinability and good biocompatibility and biodegradability, which provides a possible alternate of bioink for 3D printing. In this review, we summarize the requirements, characteristics and processabilities of SF bioink, in particular, focusing on the printing possibilities and capabilities of bioink. Further, the current achievements of cell-loading SF based bioinks were comprehensively viewed from their physical properties, chemical components, and bioactivities as well. Finally, the emerging issues and prospects of SF based bioink for 3D printing are given. This review provides a reference for the programmable and multiple processes and the further improvement of silk-based biomaterials fabrication by 3D printing.

Comparison of Supermacroporous Polyester Matrices Fabricated by Thermally Induced Phase Separation and 3D Printing Techniques

2019 ◽  
Vol 822 ◽  
pp. 277-283
Author(s):  
Mariia Stepanova ◽  
Aleksei Eremin ◽  
Ilia Averianov ◽  
Iosif Gofman ◽  
Antonina Lavrentieva ◽  
...  
Keyword(s):  
Phase Separation ◽  
3D Printing ◽  
Three Dimensional ◽  
Uniaxial Compression Test ◽  
Thermally Induced Phase Separation ◽  
Cell Penetration ◽  
Thermally Induced ◽  
Printing Technique ◽  
3D Printing Technique ◽  
Printing Techniques

Supermacroporous three-dimensional matrices based on poly-D,L-lactide or polycaprolactone were fabricated by thermally induced phase separation method and 3D printing technique. The morphology and mechanical properties of the resulting matrices were studied with the use of optical and scanning electron microscopy and the uniaxial compression test, respectively. All matrices were characterized with supermacroporous structure suitable for cell penetration. A significant increase in Young's modulus and tensile strength was established for both polymer matrices prepared by 3D printing technique.

scholarly journals Three-Dimensional Laser Printing of Macro-Scale Glass Objects at a Micro-Scale Resolution

2019 ◽  
Author(s):  
Peng Wang ◽  
Wei Chu ◽  
Wenbo Li ◽  
Yuanxin Tan ◽  
Fang Liu ◽  
...  
Keyword(s):  
3D Printing ◽  
Three Dimensional ◽  
Laser Pulses ◽  
Fused Silica ◽  
Ultrafast Laser Pulses ◽  
3D Objects ◽  
Macro Scale ◽  
Powerful Approach ◽  
Printing Technique ◽  
3D Printing Technique

Three-dimensional (3D) printing has allowed for production of geometrically complex 3D objects with extreme flexibility, which is currently undergoing rapid expansions in terms of materials, functionalities, as well as areas of application. When attempting to print 3D microstructures in glass, femtosecond laser induced chemical etching (FLICE) – which is a subtractive 3D printing technique – has proved itself a powerful approach. Here, we demonstrate fabrication of macro-scale 3D glass objects of large heights up to ~3.8 cm with an identical lateral and longitudinal spatial resolution of ~20 μm. The remarkable accomplishment is achieved by revealing an unexplored regime in the interaction of ultrafast laser pulses with fused silica which results in aberration-free focusing of the laser pulses deeply inside fused silica.

scholarly journals Therapeutic effect of acetabular fractures using the Pararectus approach combined with 3D printing technique

2020 ◽  
Author(s):  
Ruyi Zou ◽  
Min Wu ◽  
Jianzhong Guan ◽  
Yuzhou Xiao ◽  
Xiaotian Chen
Keyword(s):  
3D Printing ◽  
Three Dimensional ◽  
Operation Time ◽  
Acetabular Fractures ◽  
Effective Reduction ◽  
Printing Technique ◽  
Dimensional Reconstruction ◽  
Hip Function ◽  
Pararectus Approach ◽  
3D Printing Technique

Abstract Background To explore the clinical efficacy of pararectus approach combined with 3D printing technique for the surgical treatment of partial complex acetabular fractures. Methods We retrospectively evaluated 18 (11 males and 7 females) patients with complicated acetabular fractures in the period of June 2017 to December 2018; According to judet-letenneal classification: 11 cases were of double column fracture, 6 fractures were of the anterior column with posterior half transverse, and 1 case was of "T" fracture. For all cases, 3D printing is used to print the acetabular model. Pre-bent reconstruction plates from the model were placed to fixate fractures after reduction via the pararectus approach. Results The average time of surgery was 203 min (range:135-245 min)and mean intraoperative blood loss was 1030ml(range:450-1400ml);18 patients were followed up for 12-18 months (average,14 months);One patient (5.6%) developed postoperative wound infection, and the wound completely improved by secretion culture, enhanced dressing and effective antibiotics. One patient (5.6%) developed postoperative ossifying myositis, and there are no obvious symptoms at present; all patients underwent pelvic films and pelvic CT+ three-dimensional reconstruction after surgery, suggesting that fractures reduction as well. All the acetabular fractures united after 12 to 16 weeks(average,13 weeks);According to the modified Merle d’Aubigne and Postel scoring system to assess the hip function: excellent in 13 cases (72.2%), good in 3 cases(16.7%) and fair in 2 cases(11.1%). Conclusions In the treatment of partial complex acetabular fractures, the pararectus approach combined with 3D printing technique can achieve effective reduction and fixation, decrease intraoperative hemorrhage, shorten operation time and the internal fixation position can be properly adjusted during the operation by looking directly at the model.

scholarly journals Fabrication of Drug-Eluting Nano-Hydroxylapatite Filled Polycaprolactone Nanocomposites Using Solution-Extrusion 3D Printing Technique

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 318 ◽  
Author(s):  
Pang-Yun Chou ◽  
Ying-Chao Chou ◽  
Yu-Hsuan Lai ◽  
Yu-Ting Lin ◽  
Chia-Jung Lu ◽  
...  
Keyword(s):  
3D Printing ◽  
Fused Deposition Modeling ◽  
Three Dimensional ◽  
Fused Deposition ◽  
Drug Eluting ◽  
Deposition Modeling ◽  
3D Printed ◽  
Good Biocompatibility ◽  
3D Printing Technique ◽  
Moving Speed

Polycaprolactone/nano-hydroxylapatite (PCL/nHA) nanocomposites have found use in tissue engineering and drug delivery owing to their good biocompatibility with these types of applications in addition to their mechanical characteristics. Three-dimensional (3D) printing of PCL/nHA nanocomposites persists as a defiance mostly because of the lack of commercial filaments for the conventional fused deposition modeling (FDM) method. In addition, as the composites are prepared using FDM for the purpose of delivering pharmaceuticals, thermal energy can destroy the embedded drugs and biomolecules. In this report, we investigated 3D printing of PCL/nHA using a lab-developed solution-extrusion printer, which consists of an extrusion feeder, a syringe with a dispensing nozzle, a collection table, and a command port. The effects of distinct printing variables on the mechanical properties of nanocomposites were investigated. Drug-eluting nanocomposite screws were also prepared using solution-extrusion 3D printing. The empirical outcomes suggest that the tensile properties of the 3D-printed PCL/nHA nanocomposites increased with the PCL/nHA-to-dichloromethane (DCM) ratio, fill density, and print orientation but decreased with an increase in the moving speed of the dispensing tip. Furthermore, printed drug-eluting PCL/nHA screws eluted high levels of antimicrobial vancomycin and ceftazidime over a 14-day period. Solution-extrusion 3D printing demonstrated excellent capabilities for fabricating drug-loaded implants for various medical applications.

scholarly journals Application of a three-dimensional printed segmental scapula prosthesis in the treatment of scapula tumors

2019 ◽  
Vol 47 (11) ◽  
pp. 5873-5882
Author(s):  
Linglong Deng ◽  
Xing Zhao ◽  
Chi Wei ◽  
Wenqiang Qu ◽  
Li Yu ◽  
...  
Keyword(s):  
3D Printing ◽  
Limb Salvage ◽  
Salvage Surgery ◽  
Tumor Resection ◽  
Three Dimensional ◽  
Limb Salvage Surgery ◽  
Bony Defect ◽  
Low Grade ◽  
Printing Technique ◽  
3D Printing Technique

Chondrosarcoma is characterized by the presence of histologically aggressive behavior, and commonly involves the scapula. Currently, limb salvage surgery is the recommended surgical treatment. Owing to the irregularity of the tumor, the suitability of an implant after tumor resection is a challenge for surgeons. Three-dimensional (3D) printing technology has the potential to make personalized limb salvage surgery a reality. We report the case of a 53-year-old man who was diagnosed with chondrosarcoma of the scapula. Considering the low-grade malignancy and lack of invasion of the glenoid, we agreed upon segmental scapula replacement as the treatment protocol. Nevertheless, reconstruction of the irregular bony defect remaining after tumor resection can be complicated. Therefore, a personalized prosthesis and navigation template corresponding to tumor was designed with 3D printing technique, and tumor resection, prosthesis implantation, and rotator cuff reconstruction were completed. The affected shoulder achieved satisfactory function during a 32-month follow-up with no tumor recurrence. 3D printing technique can help implement the individualized design of the implant and accurate reconstruction after tumor resection, simplify complicated operations, improve operational efficiency, and allow early functional recovery.

Direct 3D printing of a tough hydrogel incorporated with carbon nanotubes for bone regeneration

2019 ◽  
Vol 7 (45) ◽  
pp. 7207-7217 ◽  
Author(s):  
Haomin Cui ◽  
Yaling Yu ◽  
Xiaokeng Li ◽  
Ziyang Sun ◽  
Jihao Ruan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
3D Printing ◽  
Bone Regeneration ◽  
Three Dimensional ◽  
Bone Defects ◽  
Tissue Scaffolds ◽  
Printing Technique ◽  
Regeneration Of Bone ◽  
3D Printing Technique

The emerging three-dimensional (3D) printing technique has shown prominent advantages to fabricate hydrogel-based tissue scaffolds for the regeneration of bone defects.

3D printing of Al2O3 photonic crystals for terahertz frequencies

RSC Advances ◽  
2016 ◽  
Vol 6 (3) ◽  
pp. 2450-2454 ◽  
Author(s):  
Carmen R. Tubío ◽  
José A. Nóvoa ◽  
Jorge Martín ◽  
Francisco Guitián ◽  
José R. Salgueiro ◽  
...  
Keyword(s):  
3D Printing ◽  
Photonic Crystals ◽  
Three Dimensional ◽  
Printing Technique ◽  
Terahertz Frequencies ◽  
Thermal Sintering ◽  
3D Printing Technique

A simple 3D printing technique is used to fabricate three-dimensional photonic crystals made of Al2O3 and intended to be functional for terahertz frequencies. The process is completed by a thermal sintering to obtain compact structures.

scholarly journals Comparative Study of Silk Fibroin-Based Hydrogels and Their Potential as Material for 3-Dimensional (3D) Printing

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3887
Author(s):  
Watcharapong Pudkon ◽  
Chavee Laomeephol ◽  
Siriporn Damrongsakkul ◽  
Sorada Kanokpanont ◽  
Juthamas Ratanavaraporn
Keyword(s):  
3D Printing ◽  
Silk Fibroin ◽  
Biomedical Applications ◽  
Mechanical Stability ◽  
Three Dimensional ◽  
Structure Stability ◽  
3 Dimensional ◽  
Critical Technology ◽  
Box Structure ◽  
High Degree

Three-dimensional (3D) printing is regarded as a critical technology in material engineering for biomedical applications. From a previous report, silk fibroin (SF) has been used as a biomaterial for tissue engineering due to its biocompatibility, biodegradability, non-toxicity and robust mechanical properties which provide a potential as material for 3D-printing. In this study, SF-based hydrogels with different formulations and SF concentrations (1–3%wt) were prepared by natural gelation (SF/self-gelled), sodium tetradecyl sulfate-induced (SF/STS) and dimyristoyl glycerophosphorylglycerol-induced (SF/DMPG). From the results, 2%wt SF-based (2SF) hydrogels showed suitable properties for extrusion, such as storage modulus, shear-thinning behavior and degree of structure recovery. The 4-layer box structure of all 2SF-based hydrogel formulations could be printed without structural collapse. In addition, the mechanical stability of printed structures after three-step post-treatment was investigated. The printed structure of 2SF/STS and 2SF/DMPG hydrogels exhibited high stability with high degree of structure recovery as 70.4% and 53.7%, respectively, compared to 2SF/self-gelled construct as 38.9%. The 2SF/STS and 2SF/DMPG hydrogels showed a great potential to use as material for 3D-printing due to its rheological properties, printability and structure stability.

Sign in / Sign up

Export Citation Format

Share Document