Effect of Argon Plasma Pretreatment on Tensile Bond Strength of a Silicone Soft Liner to Denture Base Polymers

Abstract

This study evaluated the effect of argon plasma treatment on tensile bonding of heat-cured and auto-polymerized acrylic resins prior to the processing of a silicone soft liner. Both types of polymethylmethacrylate (PMMA) resins were treated with argon plasma for 1 min or 10 min (n ¼ 5). A control group, including untreated resin specimens, was also formed. After processing of the soft liner, the specimens were deflasked and stored dry for 24 h, and they were then subjected to tensile bond strength testing. In order to see the plasma effect on the resin surface chemistry, representative specimens were analysed by XPS. Highest tensile bond strengths were observed in the 1-min exposure group for each resin, and 10-min exposure yielded the lowest bond strength likely due to the damaging effect of the plasma treatment. XPS analysis showed that the O=C ratios increased greatly in treated samples and that the binding energy values were not significantly changed.

Low-temperature plasma treatment of carbon fibre/epoxy resin composite

“…The main aim of the above repair is the improvement of structure strength, which is influenced by the strength of composite patch/damaged structure bonding. Recently, plasma, commonly denoted as 'the fourth state' and comprising a large number of charged particles, has been successfully used to treat and repair damaged composites [4][5][6]. Importantly, plasma treatment of material surfaces can improve their activity by inducing oxygenation and thereby enhancing the interfacial bonding properties.…”

Solvent‐ and catalysts‐free immobilization of tannic acid and polyvinylpyrrolidone onto PMMA surface by DBD plasma

“…The ease of processing and low production cost also contributes to their widespread application. Its biocompatibility makes PMMA highly attractive material in medicine either as drug delivery agent, eye‐ and contact glasses, orthopedic surgery, or dentistry, but especially as intraocular lenses . One of the main concerns of their use as implant is its hydrophobic nature.…”

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

“…However, the main disadvantage of siliconebased soft liner materials is the deterioration of the bond over time due to their structural differences with PMMA. 5 The tensile bond strength (TBS) between liner and heat polymerized PMMA is important for its service life. 6 Due to the poor adhesion both functional and hygienic problems may occur as a result of the soft liner separating from denture base.…”

“…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.…”

“…This increases the likelihood that the connection will be stronger. 5,13,18 R. Wang et al reported that the hydrophilic property of PMMA increased after 60 s of helium plasma jet application. At the end of 120 seconds, the contact angle of the group treated with helium plasma decreased more than the argon plasma group.…”