Journal of Prosthodontics News
Wettability of Saliva Substitutes Across Various Denture Base Fabrication Techniques
Now online in the Journal of Prosthodontics, an evaluation of saliva substitutes on different denture base materials co-authored by ACP members Paul Mikhail, DMD, MSc, Igor Pesun DMD, MSc, and Francisco Azpiazu-Flores, DMD, MSc.
Saliva substitutes play a crucial role in providing lubrication and moisture for individuals who experience dry mouth as a result of medications, systemic diseases, or radiation therapy. Research has demonstrated that saliva substitutes can significantly enhance the wetting properties of acrylic resin, a common material used in denture bases. This improved wettability contributes to the overall retention and stability of complete dentures, ultimately leading to greater comfort for the wearer.
Wettability, the ability of a liquid to spread over a solid surface, is studied by contact angle (CA) goniometry. Milled denture bases demonstrate better wettability than conventional bases and limited research is available on the wettability of 3D-printed denture bases.
This study evaluated the contact angles (CAs) of four denture base materials subjected to different surface treatments using deionized water and saliva substitutes. A total of 32 rectangular specimens were manufactured using four different denture base materials: heat-cured compression molded Lucitone 199 (C), milled Lucitone 199 (M), Formlabs Denture Base RP (P), and SR Ivocap High Impact (I). The CA of the surface of the unaltered, mechanically polished, and sandblasted surface specimens was evaluated after the application of five saliva substitutes: Biotene, VEGA, Spry, Moi-Stir, Dentilube, and ionized water.
The results showed that the manufacturing method of denture bases influences the contact angle hysteresis, while the chemical composition of the denture base specimens does not appear to affect it. Sandblasting increased the advancing contact angle (ACA) for the milled and conventional groups. Saliva substitutes showed varied effects on ACA; Biotene exhibited the lowest ACA, and Spry and VEGA exhibited the highest values, suggesting potentially superior dislodgement resistance.
Mikhail P, Pesun I, Azpiazu-Flores F, França R. Wettability of saliva substitutes across various denture base fabrication techniques. J Prosthodont. 2024; 1–8. https://doi.org/10.1111/jopr.13977
Previous
Next
Back to News