Journal of Prosthodontics News
Effect of Cleaning Solution on Surface Properties of 3D Printed Denture Materials
Now online in the Journal of Prosthodontics, a report on the effect of cleaning solutions on surface properties of 3D printed resins co-authored by ACP members, Nadima Khodor, BDS, MS and David Donatelli, DDS, FACP.
There are many resins available for 3D printing on the market with various compositions. The amount of inorganic and organic particles can affect the final hardness of the material. Cleaning solutions are generally used to help prevent bacterial and fungal proliferation, and depending on the composition of the cleaning agents, the exposure time and the pH of the solution, degradation of the acrylic resin may occur, which will result in increased surface roughness.
Roughness of removable prostheses is a critical parameter and higher roughness values may increase bacterial retention and plaque accumulation, which can lead to a greater risk of gingival inflammation. This study evaluated the surface changes of a wide range of materials available for 3D printing of denture base and teeth after exposure to different cleaning agents.
Seven different resin materials for denture base and teeth were used in the form of 280 half-disks. Samples were randomly assigned to two cleaning groups (FD, FreshDent; PO, Polydent), with daily 2- or 3-min immersion followed by water storage, repeated for 30 days. Samples were then cleaned in an ultrasonic bath with water and analyzed for surface roughness and hardness.
One-month of storage and cyclic cleaning of 3D printed resins did not affect surface roughness but had a significant impact on hardness. The cleaning solutions’ effect was not homogeneous among materials.
Santi MR, Khodor N, Sekula M, Donatelli D, De Souza GM. Effect of cleaning solution on surface properties of 3D printed denture materials. J Prosthodont. 2024; 1–7. https://doi.org/10.1111/jopr.13936
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