###### Abstract  
Significant advances in graphene-based materials have facilitated the development of various composites structures in a diverse range of industry sectors. At present, the preparation of graphene-added materials is mainly developed through traditional methods. However, in recent years, additive manufacturing emerged as a promising approach that enables the printing of complex objects in a layer-by-layer fashion, without the need for moulds or machining equipment. This paper reviews the most recent reports on graphene-based photopolymerizable resins developed for stereolithography (SLA), with particular consideration for medical applications. The characteristics of the SLA technology, the most suitable raw materials and formulations and the properties of final 3D products are described. Throughout, a specific focus is placed on the mechanical properties and biocompatibility of the final 3D-printed object. Finally, remaining challenges and future directions are also discussed. 3D printing; stereolithography; graphene; polymer matrix composites 2022202202202202202202202202202202202202202202202202202220222022202220222022202220222202222222222222222222222222222222222222222222222222222222  
(pore shape and size, pore distribution, interconnections between pores) with superior repeatability and reproducibility. Additive manufacturing involves the use of starting materials in the form of filaments, pellets, powders, liquid resins, ceramic pastes, gels to create solid objects of various architecture, from very small to very large dimensions. Common AM technologies used to fabricate healthcare devices or tools are Fused Deposition Modelling (FDM, coined as a trademark by Stratasys, also known as Extrusion Deposition, ED, or Material Extrusion, ME, or Fused Filament Fabrication, FFF), stereolithography (SLA), powder bed fusion (PBD), inkjet printing (IP) and others. Common for all the techniques is the use of digital models built up from scans of real-life objects or from computer-assisted design (CAD) models. Specialized software then converts the digital model into slices and finally into g-code files, usually which the machine prints layer-by-layer into 3D forms. AM was initially adopted by the companies in the automotive industry, but as the technology advanced, it was implemented in other fields, such as the medical sector, to reproduce anatomical parts through the data from image processing of the computer tomography scan file, implants or scaffolds. The curing of liquid resins occurs as a result of thermal or light-activated polymerization and can be carefully controlled and optimized through temperature and irradiation conditions, respectively. The process of VAT polymerization, represented by SLA, digital light processing (DLP), continuous liquid interface production (CLIP) and two-photon polymerization (2 PP), uses a laser as a light source to cure photopolymerizable resins. In SLA and DLP, the curing process occurs when using either UV light (365-385 nm) or visible light (405 nm), as in 2 PP near-infrared (NIR), a laser beam (532 nm) is used [4]. These techniques ensure high printing resolution (25-100 um, even 0.1-0.2 for 2 PP) for the fabrication of precise items for dental reconstruction [5; 6], delivery devices (microneedles for insulin skin delivery [7], implantable drug delivery system for osteosarcoma chemotherapy [8]) scaffolds for bone tissue engineering [9], microfluidics chips [10]. The main properties of VAT polymerization technologies have recently been reviewed in detail [11]. DLP technique uses a projector light source, and each entire layer is exposed all at once, which ensures a faster printing speed compared to SLA (where a UV laser beam is curing the layers line by line) and improves the efficiency. Drawback relies on the accuracy of the printed parts, which depends on the projector resolution. The CLIP technique was developed in 2015 and is up to 100 times faster than any other 3D printing method [12].