Research progress and challenges of bioprinting in wound dressing and healing: Bibliometrics-based analysis and perspectives

As the body’s largest organ, the skin has important roles in barrier function, immune response, prevention of water loss and excretion of waste. Patients with extensive and severe skin lesions would die due to insufficient graftable skin. Commonly used treatments include autologous skin grafts, allogeneic/allogeneic skin grafts, cytoactive factors, cell therapy, and dermal substitutes. However, traditional treatment methods are still inadequate regarding skin repair time, treatment costs, and treatment results. In recent years, the rapid development of bioprinting technology has provided new ideas to solve the above-mentioned challenges. This review describes the principles of bioprinting technology and research advances in wound dressing and healing. This review features a data mining and statistical analysis of this topic through bibliometrics. The annual publications on this topic, participating countries, and institutions were used to understand the development history. Keyword analysis was used to understand the focus of investigation and challenges in this topic. According to bibliometric analysis, bioprinting in wound dressing and healing is in an explosive phase, and future research should focus on discovering new cell sources, innovative bioink development, and developing largescale printing technology processes.