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Objective: This literature review's objective is to identify feasible materials that can be 3D printed and is utilised to create removable dentures. The review includes an overview of the properties, advantages, and limitations of different 3D printing materials, including polymers, metals, resins, ceramics, and composites. Methods: In the era of digital dentistry, additive manufacturing, or 3D printing, is taking the place of subtractive manufacturing, or milling. For example, pre polymerised PMMA (polymethylmethacrylate) used for subtractive manufacturing leads to more wastage of material (block) compared to additive manufacturing. Traditionally 3D printing has its roots in rapid prototyping (RP), which the name is given to the rapid production of models using additive layer manufacturing. Result: The study showed that the addition of CNCs and AgNPs to the PMMA resin resulted in a significant improvement in the mechanical properties of the printed parts. The flexural strength of the composite resin increased by up to 31.6% with the addition of 0.1 wt% AgNPs and 1 wt% CNCs. The impact strength of the composite resin also increased by up to 24.2% with the addition of 0.1 wt% AgNPs and 1 wt% CNCs. The researchers attributed the improvement in mechanical properties to the synergistic effect of CNCs and AgNPs, which enhanced the interfacial adhesion between the polymer matrix and the reinforcement particles. Conclusion: Additive manufacturing describes technologies that can be used anywhere throughout the product life cycle from pre-production (i.e. rapid prototyping) to full scale production (also known as mass production).
Nenwani et al. (Mon,) studied this question.