Digital Prosthetic Rehabilitation for A Paediatric Patient Using CAD-CAM Fabricated PMMA Crown- A Case Report.

Abstract

Aim: Crowns apply to primary teeth with extensive caries, cervical decalcification, developmental defects, interproximal caries extending beyond line angles, and following pulpotomy or pulpectomy.

Background description: 3D-milled polymethylmethacrylate (P-PMMA) crowns, which offer apperceptive and marginal adaptation. Advancements in CAD/CAM glass-ceramic crowns have expanded their use in Aesthetic dentistry.

Case description: This case report illustrates a clinical use of computer-aided design and manufacturing technology (CAD/CAM) for the fabrication of a crown for a decayed primary molar using a study model as a reference. The material used was a hybrid ceramic CAD/CAM block.

Conclusion: This approach has the advantage of the customisation of the abutment tooth in contrast to previously mentioned pre-fabricated options.

Keywords:

Computer-aided design (CAD), Computer-aided manufacturing technology, Digital-impression technique, 3D Milled resin crown, Modern digital paediatric dentistry.

References

Mathew MG, Roopa KB, Soni AJ, et al. Evaluation of clinical success, parental and child satisfaction of stainless-steel crowns and zirconia crowns in primary molars. J Family Med Prim Care 2020;9(3):1418–1423.

Innes NP, Ricketts D, Chong LY, et al. Preformed crowns for decayed primary molar teeth. Cochrane Database of Syst Rev;2015(12): CD005512.

Clark L, Wells MH, Harris EF, et al. Comparison of the amount of primary tooth reduction required for anterior and posterior zirconia and stainless-steel crowns. Pediatr Dent 2016;38(1):42–46.

Tote J, Gadhane A, Das G, et al. Posterior esthetic crowns in paediatric dentistry. Int J Dent Med Res 2015;1(6):197–201.

Walia T, Salami AA, Bashiri R, et al. A randomised controlled trial of three aesthetic full-coronal restorations in primary maxillary teeth. Eur J Paediatr Dent 2014;15(2):113–118.

Atria PJ, Bordin D, Marti F, et al. 3D-printed resins for provisional dental restorations: comparison of mechanical and biological properties. J Esthet Restor Dent 2022;34(5):804–815.

Yu Y, Liao Y, Guo J, et al. Computer-designed surgical templates improve the extraction of impacted supernumerary teeth in the hard palate. J Clin Pediatr Dent 2022;46(5):38–43.

Scribante A, Gallo S, Pascadopoli M, et al. Properties of CAD/CAM 3D printing dental materials and their clinical applications in orthodontics: where are we now? Appl Sci 2022;12(2):551.

Lee S. Prospect for 3D printing technology in medical, dental, and pediatric dental field. J Korean Acad Pediatr Dent 2016;43(1):93–108.

Park S, Cho W, Lee H, et al. Strength and surface characteristics of 3D-printed resin crowns for the primary molars. Polymers 2023;15(21):1213072.

Viji AA, Reddy A.Using digital impressions to fabricate space maintainers. A case report Clin case Rep 2020;8:1274-6.

Al-Halabi MN, Bshara N, Nassar JA, Comisi JC, Rizk CK. Clinical Performance of Two Types of Primary Molar Indirect Crowns Fabricated by 3D Printer and CAD/CAM for Rehabilitation of Large Carious Primary Molars. Eur J Dent. 2021;15(3):463-468.

Aktaş N, Bankoğlu Güngör M. Evaluation of Wear on Primary Tooth Enamel and Fracture Resistance of Esthetic Pediatric Crowns Manufactured from Different Materials. Medicina (Kaunas). 2024;60(10):1678.

Van Ngoc-Thuy Nguyen, Nam Cong-Nhat Huynh, Thoai Quoc Kieu, Ninh Hai Truong, Hung Trong Hoang. In vitro study of fracture resistance and colour stability of 3D-printed, milled hybrid ceramic, milled PMMA and prefabricated zirconia crowns for restoration of primary incisors. Journal of Clinical Pediatric Dentistry. 2025;49(6):198-205

Park S, Cho W, Lee H, et al. Strength and surface characteristics of 3D-printed resin crowns for the primary molars. Polymers (Basel). 2023;15(21):4241.

Giridharan DL, Gopal S. Comparison of Fracture Resistance Force (Load-to-fractured Test) and Failure Type of 3D-printed Stainless Steel Crowns and Preformed Stainless Steel Crowns in Primary Molars: An In Vitro Study. Int J Clin Pediatr Dent. 2024 ;17(10):1129-1134

Elkhodary HM, Farsi NM, Abdelmeguid SM, Elbanna KA, Alshehri MR, Aldajani MB, Bhadila GY. Marginal Gap Distance and Dynamic Fatigue Performance of Esthetic Crowns for Primary Teeth. Int J Paediatr Dent. 2025;35(4):829-838.

Shanmugaavel AK, Balakrishnan P, Nandhini T, et al. Comparison of Clinical Performance of Preformed CAD/CAM Milled PMMA Crown and Stainless Steel Crown for Primary Molar Teeth Using Dental Operating Microscope. Int J Clin Pediatr Dent 2026;19(2):139–144.

Vislawath, O. S. P., et al. "Comparative evaluation of colour stability of conventional, 3d printed and cad cam fabricated provisional restorations- An in-vitro study." ResearchGate, 2025;11(1):40-5.