Page 80 - IJB-10-2
P. 80

International Journal of Bioprinting                                         Advancements in 3D printing




                 viability and utilizing biofeedback mechanisms to   can interact with surrounding tissues. Addressing
                 guide cell differentiation.                        issues related to structural stability and interaction is
                                                                    crucial.
            (ii)  Structural complexity. Creating biologically complex
                 tissues is a challenge. Using multi-material printing   6.6. Artificial food
                 and scaffold melting techniques can enable the   3D-printed artificial food is a field full of potential, offering
                 fabrication of more intricate structures.     many opportunities, but this rising domain also faces some
            (iii)  Biocompatibility.  Printed materials must be   challenges. The following are the future prospects and
                 compatible with the human body and not trigger   challenges of 3D-printed artificial food.
                 immune responses. Researchers have been developing   3D-printed food can be customized according to
                 novel bioinks to enhance biocompatibility.    individual health needs and taste preferences, providing

            (iv)  Functionality. Structured biological tissues must   more personalized nutritional solutions. A more efficient
                 perform specific physiological functions. This may   production process is  employed  to produce 3D-printed
                 require consideration of the tissue’s microstructure   food, thereby reducing food waste and the demand for
                 and tissue engineering parameters during the design   land and water resources. This technology can be used to
                                                               create new food textures, shapes, and tastes, driving food
                 process to ensure it possesses the desired functionality.
                                                               innovation. 3D printing of food is regarded as a rapid food
            6.5. Embedded bioprinting                          production process that can efficiently overcome any food
            Embedded 3D bioprinting refers to the 3D printing   shortage situations.
            technology  where  biological  materials  are  directly   However, there are still some challenges facing this
            embedded into living tissues to repair, enhance, or   particular segment of 3D printing. Developing materials
            augment the functionality of biological organisms. This   suitable  for  3D printing  of  food while  considering  food
            is a field with enormous potential but also faces future   safety, taste, and texture is a complex challenge. Ensuring
            opportunities and challenges.                      the safety of 3D-printed food is a critical issue that needs

               Embedded 3D bioprinting enables the customization   to be addressed by a strict adherence to the prevailing
            of  biological  tissues  and  organs  according  to  the   food manufacturing and hygiene standards. Currently, 3D
            individual patient’s needs, epitomizing the concept of   printing of food is a relatively costly endeavor; therefore,
            personalized medicine. This technology can be used for   improvements in production efficiency to reduce costs
            tissue repair, organ regeneration, and treatment of various   and achieve scalability are required. In addition, the use
            diseases and injuries. Embedded 3D bioprinting can also   of sustainable materials and production methods must be
            be employed to create microtissue models with specific   considered to minimize the environmental impact arising
            cell types and functions, suitable for drug screening and   from the 3D printing process of food.
            disease research. Devices for embedded 3D bioprinting
            can be utilized to produce wearable sensors, implantable   7. Conclusion
            medical devices, and smart health monitoring systems. If   In summary, 3D bioprinting technology is widely used
            successful, embedded 3D bioprinting holds the potential   in the medical field and has unique advantages in the
            to address long-standing issues in the medical field, such   field of organ reconstruction, including the production of
            as organ transplantation.                          simulated medical models and biomedical devices. This
                                                               technique has garnered enormous attention, which has
               However, it also presents several challenges:
                                                               promoted the unprecedented development of a growing
            (i)   Material selection and compatibility. The biological   number of promising biomolecular materials. At present,
                 materials used in printing must be compatible   3D bioprinting technology is still unable to build organs
                 with  the  host  tissue  to  prevent  immune  rejection.   and tissues that can be directly used for transplantation.
                 Nevertheless, finding suitable bioinks and scaffold   In fact, several challenges should be surmounted in
                 materials remains a challenge.                the  process of  continuously  optimizing  the  current
                                                               bioprinting techniques, such as strengthening immune
            (ii)  Cell survival and differentiation. During the   response, affording capacity to vascularize, enabling
                 embedding process, cells need to survive and adapt   multi-tissue printing, and allowing bionic structure
                 to their new environment. However, ensuring cell   formation, which are also viewed as opportunities for
                 survival and differentiation is a complex issue.
                                                               further improving the techniques. We believe that in
            (iii)  Structural stability. The structures created through   the near future, bioprinting can achieve more profound
                 embedded 3D bioprinting must remain stable and   breakthroughs in artificial organ preparation, which

            Volume 10 Issue 2 (2024)                        72                                doi: 10.36922/ijb.1752
   75   76   77   78   79   80   81   82   83   84   85