Additively Fabricated Permanent Crown Materials: An Overview of Literature and Update

Background/Objectives: With advancements in technology, three-dimensional (3D) printing has become widely used, offering many advantages. Recently, 3D printing has been utilized for the fabrication of permanent crowns. However, there is still a need for more information regarding the technology, materials, and factors that may affect the properties of 3D-printed permanent crowns. Methods: This review was conducted to collect and assess information regarding the performance of 3D printing technology for permanent crown fabrication. An electronic search was performed using various search engines (Scopus, PubMed, Google Scholar) up to December 2024, yielding 123 articles. After screening, 24 articles that specifically investigated 3D-printed crowns were included. Results: Based on the findings, two categories of materials for 3D-printed permanent crowns were identified: ceramic-based and resin-based. Among the technologies used, digital light processing (DLP) was the most common, reported in 11 studies, followed by stereolithography (SLA) in 7 studies, and lithography-based ceramic manufacturing (LCM) in 4 studies. Conclusions: Ceramic-based crowns demonstrated higher performance compared to resin-based crowns. However, resin-based crowns were found to be clinically acceptable. Ceramic-based crowns are recommended for permanent crown fabrication, while resin-based crowns require further investigation to address the limitations of the materials and technologies used.