Features of 3D printed denture base polymers vs. standard materials

A study examined the characteristics of three-dimensionally printed denture base polymers.

The in vitro study published in The Journal of Prosthetic Dentistry, the researchers compared the mechanical properties — including the flexural strength, elastic modulus, fracture toughness, work of fracture and Martens hardness — of 3D printed denture base polymers with those of injection molded materials.

The researchers found that compared with the injection molded materials, the 3D printed denture base polymers had a lower flexural strength, elastic modulus and Martens hardness. The 3D printed denture base polymers also demonstrated a potentially higher fracture toughness and work of fracture for some of the additive resins compared with those of the injection molded materials. Further, bend testing confirmed that the materials did not fracture.

The findings emphasized the need for tension tests during ductile material assessments.

Read more: The Journal of Prosthetic Dentistry

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