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Influence of parameters and characteristics of complete denture bases fabricated by 3D printing on evaluated properties: a scoping review

Ana Beatriz Vilela Teixeira, DDS, MSc, PhD/Andréa Cândido dos Reis, DDS, MSc, PhD

DOI: 10.11607/ijp.7473

Purpose: To verify the parameters and characteristics evaluated in printed complete denture bases and how they influence properties. Materials and Methods: This work was registered in Open Science Framework (osf.io/4um6v) and followed the PRISMA Extension for Scoping Reviews (PRISMA-ScR). A search of peer-reviewed articles published up to April 9, 2020 was performed on the PubMed, Lilacs, Cochrane Library, and Science Direct databases. The review question based on the population, concept, and context (PCC) was: What printing parameters and characteristics of complete denture bases can influence properties? Results: The database search resulted in 1,945 articles, and 1,390 article titles and abstracts were screened. A total of 17 articles were included. The summarized findings included: cleaning prostheses with alcohol after printing and a postcuring cycle influence biocompatibility and residual monomers; the printing angle influences physical/mechanical properties, microbial adhesion, and tissue adaptation; accuracy is influenced by layer thickness and the manufacturing technique, which also influences retention and tissue adaptation; the incorporation of antimicrobial agents influences physical/mechanical properties and antimicrobial activity; and the method of union between the base and the teeth influences mechanical strength. Conclusion: Printed denture bases of 100-μm layer thickness showed good adaptation to tissues and accuracy, and it can be recommended that the prosthesis be cleaned in ethanol followed by postcuring for better biocompatibility. Nanoand microparticles can be added to provide antimicrobial activity and better resistance. Printing angle and mechanical properties must be better evaluated.

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