In the field of dentistry, dental prosthetic manufacturing is vital for creating precise, durable restorations like dentures, crowns, and implants. While traditional casting methods are more commonly used, they come with certain drawbacks, such as defects in dental prostheses leading to multiple visits for adjustments, increased costs, and longer treatment times. To address these issues, 3D printing can be implemented as an alternative technique. This research studied the effect of the nozzle size in 3D printing on the surface finish of dental prosthetics, and comparing the standard of 3D printing with conventional dental prosthesis methods. The study reveals that surface roughness is significantly influenced by nozzle diameter size, with variations observed in both top and side views. The mean surface roughness value for the 0.4 mm nozzle diameter size is deemed more optimal for 3D printing prosthetic dental structures compared to 0.2 mm and 0.6 mm.