Effect of argon plasma and Er:YAG laser on tensile bond strength between denture liner and acrylic resin

Effect of plasma treatment on the bond of soft denture liner to conventional and high impact acrylic denture materials

“…In practical usage, soft liner materials are often subject to tearing and shear stresses, resulting in their debonding from the denture base after a period of use. (4) Numerous ways of surface modification have been investigated in the literature; plasma treatment was found to greatly increase surface hydrophilicity without impairing the surface chemical characteristics. (12) As such, in the current research, the impact of oxygen and argon plasma treatment on SBS of soft liner to denture bases of two different materials was evaluated.…”

“…(3) While retention is critical for a good denture over time, dentures can become ill-fitting due to residual ridge resorption causing discomfort and pain to the patient. (4) This issue can be addressed by the use of resilient denture liners. Soft liners provide cushioning effect assisting in the distribution and reduction of the functional forces, as well as helping the tissue in recovering from trauma giving comfort to the patient.…”

Evaluation of Helium Plasma Surface Modification on Tensile Bond Strength of Denture Base Materials: A Scanning Electron Microscope Study

“…To overcome this problem, many studies have attempted to provide a reliable bond between the denture base resin and the soft liner using lasers, alumina coating, acetone solution application, chemical etching and plasma treatment. 1,2,[10][11][12][13] The use of airborne particle abrasion is one of the most common methods for modifying acrylic surfaces, which increases the TBS between heat polymerized PMMA and silicone-based soft liner. However, this process can adversely affect the strength of the denture base material.…”

“…Plasma has played an effective role in increasing surface wettability, surface energy, hydrophilic properties as well as killing a variety of pathogens. 5,13,18 Since the depth of the plasma treatment is limited to a few nanometers of the material surface, it is a useful method where surface modifications can be made without affecting the physical properties and function of the material. 15,19 Recently, studies on plasma technology in surface modification of PMMA have been reported and its application has been recommended as an increase in the TBS of the soft liner to PMMA has been observed.…”

“…15,19 Recently, studies on plasma technology in surface modification of PMMA have been reported and its application has been recommended as an increase in the TBS of the soft liner to PMMA has been observed. 1,13,[20][21][22] Factors such as the properties of the material to be treated with plasma treatment, the plasma generator, the type of gas used, the reaction parameters applied (power, pressure, application distance and application time, etc) affect the reactions that the plasma treatment will cause on the surface. 23 Inert gases such as helium, argon, neon, in addition to these, oxygen and oxygen-containing plasmas are widely used to modify polymer surfaces.…”