Effects of different high alkyl methacrylate monomers on tensile bond strength between resilient liner and acrylic resin

Abstract

In the present study, tensile bond strength between an acrylic resin and a resilient denture liner, Molloplast B, was studied. To enhance the bonding capacity between these materials, acrylic resin surface was modified using ethyl methacrylate, iso-butyl methacrylate or tert-butyl methacrylate monomers. Changes on the modified surfaces were investigated by Fourier transform infrared spectroscopy with attenuated total reflectance. Only the modifications by isobutyl methacrylate application appeared to have an increasing effect on the tensile bond strength value. Ethyl methacrylate and tert-butyl methacrylate, however, had a lowering effect on this value.

Investigation of bonding properties of denture bases to silicone-based soft denture liner immersed in isobutyl methacrylate and 2-hydroxyethyl methacrylate

“…Moreover, application of chemical agents possessing solvent effects on the acrylic resin can cause the formation of roughened surfaces, and this in turn, positively affects the strength of the bond. FTIR is important for determination of the secondary interactions and study of molecular structure 12. However, FTIR analysis could not be performed on the specimens, because the soft structure of the liner prevents getting samples from it for analysis.…”

“…A reliable bond between denture bases and soft liner is required for the denture to function properly. Therefore, researchers have attempted to identify other methods to improve the PMMA/resilient liner bond 4,9,10,11,12,13,14,15,16. In the dental literature, the difficulty of obtaining a reliable bond between soft relining materials and PMMA denture base polymers has often been discussed 17.…”

Tensile Bond Strength of a Soft Liner to an Acrylic Resin after Primer Application and Thermocycling

“…The resilient denture liners are indicated for the restoration of inflamed support tissues, severe bone resorptions and low resilience mucosa because of their damping effect and by providing increased prosthesis stability [1][2][3][4] . These materials are classified as resin-based soft liner and silicone-based soft liner 3 and are composed by monomers and polymers associated with plasticizers 5,6 which provide softness to the relining material and comfort to the patient 7 .…”

“…Some union agents, i.e. primers, are developed to prevent these failures because of their interaction with the surface of acrylic resin and the resilient liners 1,2 . It has been speculated that, although fabricated for silicone-based soft liner, the organic solvents present in primers composition may improve the adhesion between these materials [12][13][14] .…”

Effect of Different Beverages on the Bond Strength Between Silicone Lining Material and Denture Resin

“…Bu yüzden araştırmacılar PMMA ile yumuşak astar materyali arasında bağlanmayı artırmak için pek çok yön-tem denemiş ve akrilik ile olan temas yüzeylerine lazer, kumlama ve kimyasal ajanlar uygulamışlar-dır. 3,[6][7][8][9][10] Farklı kimyasal ajanlardan olan metakrilat içerikli izobütilmetakrilat, akriliklerin fiziksel özelliklerini geliştirmek ve bağlanma kuvvetini artırmak için kullanılmıştır. 8,11,12 Yumuşaklığının zamanla azalması, bakteri tutunumuna neden olması, zamanla yırtılmaları ve ağız ortamına alınan farklı besin ve sıvılar ile teması ve kullanım sonrası zamanla kaide materyalinden ayrılması gibi özel-liklerinden dolayı olumsuz durumlar ortaya çık-maktadır.…”