Purpose: The purpose of this study was to determine the initial viscosity and adhesive strength of commercial denture adhesives and oral moisturizers.

Materials and Methods: Four cream-type denture adhesives, one gel-type denture adhesive and three gel-type oral moisturizers were used in the study. The initial viscosity was measured using a controlled-stress CarriMed CSL500 rheometer. The adhesive strength was measured according to the ISO-10873 recommended procedures using a constant load compression testing machine and a materials testing machine.

Results: Significant differences in initial viscosity were found among the materials (p<0.05). Similar viscosity values were recorded in all materials except Tafugrip Gel and Corect Cream. The adhesive strength of denture adhesives increased significantly with time, but the adhesive strength of oral moisturizers decreased significantly with time.

Conclusion: Cream-type denture adhesives and gel-type oral moisturizers exhibit similar initial viscosity, and denture adhesives and oral moisturizers function with different adhesion behaviors.

This article presents a methodical procedure that facilitates the use of a light-activated composite resin to add and adjust the intaglio surface of a removable prosthesis to accommodate root copings. A surface preparation for methyl methacrylate resin was used to ensure the bonding between a light-activated composite resin and denture base resin.

Purpose: The purpose of this study was to evaluate the effect of metal priming agents on the bond strength between a gold alloy and composite luting agents.

Materials and Methods: Disk specimens were cast from a gold alloy (Degudent U) and air-abraded with alumina. Four priming agents (Alloy Primer, Estenia Opaque Primer, Metaltite, and V-Primer) were applied separately to the abraded surface. Unprimed specimens served as the control. Three composite luting agents (Esthetic Cement, Panavia F2.0, and SA Luting) were inserted into the brass ring on the cast disks and were chemically-polymerized. The specimens were stored in 37˚C water for 24 hours and subsequently thermocycled (5˚C-55˚C, 1-1 minute, 20,000 cycles). The shear bond strengths were determined, and the results were analyzed using the Steel-Dwass multiple comparison test.

Results: The application of Metaltite enhanced the bond strength of three luting agents. The Estenia Opaque Primer, V-Primer, and Alloy Primer were effective in bonding the gold alloy and Esthetic Cement, whereas the bond strength of the SA Luting did not improve with use of the Estenia Opaque Primer, V-Primer, or Alloy Primer.

Conclusion: Thione-based priming agents (Alloy Primer, Metaltite, and V-Primer) were substantially effective for bonding the gold alloy with specific composite luting agents.

A tri-n-butylborane (TBB) initiated adhesive resin with pre-polymerized filler particles (Bondfill SB) has been released. This article describes bonding technique and short-time clinical performance of the adhesive. The materials and procedure reported here are applicable as an option of the restorative treatments for the patients incompatible to currently available materials.