Three-dimensional-printed Photopolymer Resin Crowns vs Computer-aided Milled Polymethyl Methacrylate Crowns with Prefabricated Zirconia Crowns for Primary Molars: A Randomized Clinical Trial

Aim: To compare and evaluate the clinical success rate of computer-aided designed and milled polymethyl methacrylate (PMMA) crowns, three-dimensional (3D)-printed photopolymer resin crowns with prefabricated zirconia crowns in primary molars. Materials and methods: This study was carried out in children requiring crowns in the age-group of 4-8 years. Initial clinical and radiographic analyses for all the children were carried out, and 45 children were included in the study. Impression-making techniques were evaluated for their preference, comfort, pain, gag reflex, and breathing difficulty using a visual analog scale (VAS). Clinical evaluation was done using the United States Public Health Service (USPHS) criteria at baseline, 3, 6, and 9 months. Friedman test was used for statistical analysis. Conclusion: Polymethyl methacrylate crowns and photopolymer resin crowns showed good marginal adaptation and biocompatibility as compared to prefabricated zirconia crowns. How to cite this article: . Three-dimensional-printed Photopolymer Resin Crowns vs Computer-aided Milled Polymethyl Methacrylate Crowns with Prefabricated Zirconia Crowns for Primary Molars: A Randomized Clinical Trial. Int J Clin Pediatr Dent 2025;18(5):506-513.