Investigation the Effect of Piranha Solution Surface Treatment on Poly-Methylmethacrylate

Detachment of lining components on acrylic dentures is common. Therefore, Improving the adhesion between the lining and the acrylic denture is crucial. The piranha solution was used to treat acrylic to enhance bonding strength. This study assessed the influence of the piranha solution (combination of hydrogen peroxide H۲O۲ and sulfuric acid H۲SO۴) on enhancing the adhesive strength of acrylic resin and silicone-based denture soft liners. Eighty poly-methylmethacrylate (PMMA) samples were fabricated for surface roughness (n=۲۰), shear bond strength (n=۲۰ pairs), wettability (n=۲۰), and hardness test (n=۲۰). The samples were randomly categorized into Group W (without treatment) and Group P (with piranha solution treatment). A silicone soft lining followed. Profilometers, universal testing equipment, optical contact angle, and shore D Durometer equipment were used to analyze surface roughness, shear bond strength, wettability, and hardness samples, respectively, followed by research on failure mechanisms. A T-test was used to analyze the data. Significant variation was observed in group P (surface roughness, shear bond strength, and wettability) values (P ≤ ۰.۰۵). The Piranha solution treatment group (Group P) showed a higher surface roughness, shear bond strength, and wettability than the control group (Group W) and non-significant variation in hardness values between the two groups. The findings of this study indicate that using the piranha solution can be a very successful approach for enhancing the surface properties of PMMA, hence augmenting the bonding capability of a silicone soft liner.

Keywords:

Contact angle , Mode of Failure , Roughness , Sulfuric acids , Piranha solution , Chemical Oxidation