Review of adhesive techniques used in removable prosthodontic practice

Abstract

There are several benefits in using adhesive technique in removable prosthodontics as well as fixed prosthodontics. Previous studies have examined denture-base surface treatments that improve bond strength between a denture base resin and autopolymerizing repair resin. Dichloromethane and ethyl acetate are organic solvents that swell the denture base surface, thereby permitting diffusion of the acrylic resin. The optimal treatment duration is 5-10 s for dichloromethane and 120 s for ethyl acetate. It was reported that the bond durability of dichloromethane was superior to that of ethyl acetate. Bonding between metal components and the denture base resin has an important role in the longevity of removable prostheses. The combination of metal conditioners and alumina air-abrasion is effective in fabricating and repairing removable dentures. Acidic monomers (4-META and MDP) are appropriate for base metal alloys, including Co-Cr alloy and titanium alloy, while thione monomers (MTU-6 and VBATDT) are suitable for noble metal alloys such as gold alloy and silverpalladium-copper-gold (Ag-Pd-Cu-Au) alloy. As an alternative to conventional restorations, resin-bonded restorations can provide precisely parallel guide planes with well-made rest seats. Careful consideration should be paid to stabilizing loosened teeth by fixing them with resin-bonded splints or fixed partial dentures. (J Oral Sci 54, 205-211, 2012)

Effect of thione primers on adhesive bonding between an indirect composite material and Ag-Pd-Cu-Au alloy

“…The application of airborne-particle abrasion and priming agents containing functional monomers e.g., VTD or MTU-6, improves the bond strength and durability between the noble alloy and luting materials 10,[21][22][23][24][25][26][27] . In addition, clinical results showed considerably long survival periods for RBFPDs and restorations made of noble alloys that were bonded with primers containing VTD or MTU-6 [28][29][30][31][32][33] . The use of priming agents containing organic sulfur compounds was recently reported to effectively enhance the bonding between noble metals, e.g., gold, silver, platinum, palladium, and luting materials [34][35][36] .…”

Comparison on the Transverse Strength of Heat Cure Polymethylmethacrylate Denture Base Resin Repaired with Different Surface Treatments and Surface Design Modifications

“…Alumina airabrasion is utilized to roughen the repair surface of the denture base to increase the area of bond contributing to micromechanical retention and eliminating substances which adhere to the surface of the repair region. Shimazu H 23 found that air abrasion with 50 m alumina followed by application of dichloromethane improved the bond between repaired surface because of synergistic eff ect on morphologic changes by means of dichloromethane and increasing of surface area due to air abrasion. In contrast with the present study, Savendra G 24 in a study compared diff erent surface modifi cations and found sandblasting better.…”

Reinforcement of polymethylmethacrylate (PMMA) resin with perforated metal plates

“…It can cause discoloration and staining of the margins at the metal-resin interface over time. 22 Therefore, the need of a durable bonding between the metal grid and the denture resin remains critical with respect to staining over time. Should that type of bond be achieved by gritblasting, adhesive resin or combination of the two should be investigated further by additional in vitro studies with specimens after a long-term storage in appropriate solutions or through longterm clinical observation.…”