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International Journal of Bioprinting                                      Bioprinting with machine learning

































            Figure 2. An error compensation method used in additive manufacturing. Reprinted from ref. [17] under the terms of the Creative Commons CC-BY
            license.

               Although 3D bioprinting has the potential to be   time memory, and integrated learning are shown. Next,
            applied in the regeneration strategy, many problems   the successful applications of machine learning technology
            concerning the printing process and the materials that can   in bioink preparation, printing parameter optimization,
            be used for bioprinting are waiting to be overcome [11,12] .   and defect detection are summarized in the subsequent
            The challenges of the printing procedure include printing   sections.
            accuracy, printing speed, and compatibility of the printing
            procedures with cells. The most significant limitation of   2. Additive manufacturing with machine
            bioprinting technology is that the printed tissue structures   learning
            do not resemble the natural tissues and organs. Most
            of the time, the current bioprinting methods can only   3D bioprinting is a new tissue engineering technology
            achieve structural design and fabrication but the fabricated   based on rapid prototyping and additive manufacturing
            structures can hardly function like how their natural   technology, mostly involving multiple disciplines. Additive
            counterparts do.                                   manufacturing is the general name of a method used to

               After analyzing relevant features in existing data,   construct 3D object from computer-aided design model,
            machine learning can be employed to process new data.   while bioprinting is a branch of this method that is
                                                                                                          [16,17]
            Machine learning, with its rich experience, is more adept   predominantly used in fabricating biological constructs
            at dealing with new problems . In recent years, there   (Figure 2). By reviewing and summarizing the instances of
                                     [13]
            have been a lot of investigations targeting at combining   the combination of additive manufacturing and machine
            machine learning with 3D bioprinting, and favorable   learning, it is helpful to understand the advantages of the
            outcomes have been obtained [14,15] . In this paper, the   combination of machine learning and bioprinting more
            recent work about 3D bioprinting in bioink preparation,   profoundly and further expand the application of machine
                                                                                 [18,19]
            parameter  optimization,  and  defect  detection  through   learning in bioprinting  .
            machine learning are summarized. The paper is organized   At present, the product development of additive
            as follows: First, the applications of machine learning in   manufacturing is not mature enough, and the design rules
            additive manufacturing are listed, shedding the light on   also need more in-depth research.  Ko  et  al.  designed
                                                                                                   [20]
            the  application  of  machine  learning  technology  in  3D   a knowledge reasoning structure with a decision tree
            bioprinting. Then, the basic principles of machine learning   algorithm. The dataset for model training was derived from
            algorithms such as K-nearest neighbor, back propagation   the additive manufacturing case of laser powder fusion. The
            neural network, convolutional neural network, long short-  trained model was verified on the test data of the National


            Volume 9 Issue 4 (2023)                        335                         https://doi.org/10.18063/ijb.739
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