Assessment of the correlation between the tensile and diametrical compression strengths of 3D-printed denture base resin reinforced with ZrO2 nanoparticles

Background: The mechanical properties of 3D-printed denture base resins are crucial factors for determining the quality and performance of dentures inside a patient’s mouth. Tensile strength and diametral compressive strength are two properties that could play significant roles in assessing the suitability of a material. Although they measure different aspects of material behavior, a conceptual link exists between them in terms of overall material strength and resilience. Aim: This study aims to investigate the correlation between tensile strength and diametral compressive strength after incorporating 2% ZrO2 nanoparticles (NPs) by weight into 3D-printed denture base resin. Methods: A total of 40 specimens (20 dumbbell-shaped and 20 disc-shaped) were produced via 3D printing and divided into two groups (n = 10): (1) 3D-printed denture base resin without NPs and (2) the resin was strengthened with 2% by weight ZrO2 NPs. Tensile strength and diametral compressive strength were assessed using a universal testing machine. Results: A detrimental relationship was observed between the tensile strength and diametral compressive strength of 3D-printed denture base resin after the addition of NPs. Conclusion: The enhancement of one property does not necessarily mean the enhancement of another. Caution should be taken to not endanger the quality of a material

The characteristics tests of the PEKK-titanium oxide composite material

Polymers, being one of the most important materials in dentistry, offer great physical and mechanical qualities, as well as good biocompatibility. Aim of this study this study was done to evaluate the Polyetherketoneketone and Polyetherketoneketone polymer composite material used as dental implant through evaluation including (flexural strength, Wettability). Polyetherketoneketone composites (Polyetherketoneketone and titanium oxide nanoparticles with selected weight percentage ratios of (0, 5%, 10%, 15%), were fabricated using a compression molding technique, The study involved Samples preparation (sheets) shaping and forming into desire shapes according to standard for tests which include flexural strength  and Wettability. The results obtained from the experiments showed that slight increase in tensile polymer composite consisting from polyetherketoneketone and Tio2 nanofiller comparing with pure Polyetherketoneketone, with increase the in concentration of Polyetherketoneketone composite (concentration 5%, 10%, 15%), improvement in the wettability value and flexural strength