Adhesion of elastomeric impression materials to trays.
The tensile and shear adhesive bond strengths of two addition cured silicones (Provil and Express) and a polyether (Impregum) impression material to brass, poly(methylmethacrylate) and visible light-cured (VLC) tray resin were determined. Adhesive application significantly increased the bond strength; Provil and Express adhered most strongly to brass; whilst the Impregum-VLC combination produced the strongest bond. Indeed, VLC resin generated greater adhesion than acrylic resin. Exchanging the adhesives specified for each silicone material generally resulted in higher bond strengths. No correlation was established between speed of separation of the test surfaces and bond strength. For optimum clinical performance, the impression material (adhesive) tray material giving the highest bond strength should be utilized.
Bindra
B
B
Turner Dental School, University of Manchester, U.K.
Heath
J R
JR
D000180:Acrylic Resins / Q000737:chemistry; D000268:Adhesiveness; D000497:Alloys / Q000737:chemistry; D000704:Analysis of Variance; D003300:Copper / Q000737:chemistry; D003760:Dental Impression Materials / Q000737:chemistry*; D003761:Dental Impression Technique / Q000295:instrumentation*; D003799:Dental Stress Analysis / Q000295:instrumentation; D008422:Materials Testing / Q000295:instrumentation; D008768:Methylmethacrylates / Q000737:chemistry; D011145:Polyvinyls / Q000737:chemistry; D012117:Resins, Synthetic / Q000737:chemistry; D012408:Rubber / Q000737:chemistry*; D012826:Silicone Elastomers / Q000737:chemistry; D012833:Siloxanes / Q000737:chemistry; D013314:Stress, Mechanical; D013718:Tensile Strength; D014783:Viscosity; D015032:Zinc / Q000737:chemistry
D000180:Acrylic Resins; D000497:Alloys; D003760:Dental Impression Materials; C022821:Impregum; D008768:Methylmethacrylates; D011145:Polyvinyls; C068743:Provil; D012117:Resins, Synthetic; D012826:Silicone Elastomers; D012833:Siloxanes; C048399:brass; D003300:Copper; D012408:Rubber; D015032:Zinc