The Bond Strength of Different Tray Adhesives on Vinyl Polysiloxane to Two Tray Materials: An In Vitro Study

Abstract

There has been no established chemical bonding between custom tray resin and the elastomeric impression materials without the use of manufacturer's recommended specific tray adhesive. The present study was aimed to compare the bond strength of the manufacturer recommended tray adhesives with the universal tray adhesives using the medium body consistency vinyl polysiloxane (VPS) material and custom tray made of autopolymerising resin and visible light cure (VLC) resin. A total 90 cubicle specimens of autopolymerising resin and 90 specimens of VLC resin were tested for its tensile bond strength. Effectiveness of universal tray adhesive was compared with manufactured tray adhesive. Each of these specimens was then subjected to tensile load in hounsefield universal testing machine at a cross head speed of 5 mm/min and the results were compared and evaluated using one way analysis of variance and post hoc Tuckey's test. Analysis of bond strength revealed that the universal tray adhesive showed better strength and was statiscally significant when compared to the manufacture supplied tray adhesive. Comparison between both the groups, VLC resin showed better bond strength as compared to autopolymerizing resin. Universal tray adhesive had better tensile bond strength than the manufacturers recommended tray adhesive with the medium body viscosity VPS impression material for both autopolymerising and VLC tray resin.

Tensile bond strength of polyvinyl siloxane impression material to auto-polymerizing custom tray using different tray adhesives: A comparative study

“…Autopolymerizing tray material is the most commonly used in clinical dental practices today. 6 In a study by Ashwini et al, 13 the authors used two dental tray materials to evaluate bond strengths of universal and manufacturers adhesives to elastomeric materials from three different manufacturers. These were auto polymerising resin material manufactured by dental product of India (DPI) and visible light cured resin from DP dental.…”

Compatibility of a Silicone Impression/Adhesive System to FDM-Printed Tray Materials—A Laboratory Peel-off Study

“…Among them, light-curing resins are regarded as the gold standard, since they are dimensionally stable, stiff, and can be used immediately after setting [ 19 ]. The light-curing resin was also reported to have a better bond strength to the impression/adhesive systems than the autopolymerizing resin [ 12 , 16 , 17 , 26 ]. Recently, FDM has shown promise in facilitating the fabrication of custom trays in dentistry, but only a few studies are related to this topic.…”

“…Dixon et al found there was a significant difference in the bond strength of a silicone impression/adhesive system to three custom tray materials [ 16 ]. Ashwini et al indicated the vinyl polysiloxane system had a better bond strength to the visible light cure resin than to the autopolymerizing resin [ 17 ]. Maruo et al reported the surface roughness of the tray material significantly affected bond strength [ 15 ].…”

Addition Silicone Impressions in Fixed Prosthodontics: Clinical Standpoints

“…Among all elastomers, additional silicone exhibits the least amount of shrinkage, approximately 0.15%, followed by polyether with 0.2% [ 2 ]. Without the tray adhesive, polymerization shrinkage would proceed unchecked, resulting in a die that is small in height and diameter [ 18 ]. It is preferable to produce a die with a larger diameter by using tray adhesive to direct shrinkage toward the walls of the impression tray.…”