With the advancement of CAD/CAM technology, accurate digital data is crucial for the long-term success of prosthetics. The present study aimed to find and comprehensively review the literature on the digitization process of CAD/CAM crowns using CBCT and compare it with the results obtained using standard scanners to determine fit. The PRISMA guidelines were used. “Does the scanning technique (I) provide better accuracy and marginal fit (O) in teeth that require full veneer crowns (P) compared with the routine digital methods of fabrication (C)?” were the keywords. A thorough electronic search was conducted between 2015 and January 2023. All studies that compared the fit of prostheses fabricated with intraoral scanners and CBCT were included. An electronic database search identified 260 articles. Four studies were included to answer the research question. The marginal differences of digitally created crowns using CBCT were examined in all four studies. The marginal fit of crowns did not show any statistically significant differences. There is not much research comparing the fit of crowns made with intraoral, extraoral, and CBCT scanners. According to the current systematic review, high-quality trials are needed to evaluate the precision and fit of crowns and prostheses made with CBCT scans as intra-oral scanners.
