IADR Abstract Archives
Bond Influence of Priming Lithium Disilicate and Zirconia Restorations
Objectives: Quantify difference in bond enhancement effectiveness among various brands of liquid primers on Lithium Disilicate and Zirconia Restorations, when used in conjunction with resin cement
Methods: Lithium disilicate (IPS e.max CAD, Ivoclar Vivadent) and zirconia (BruxZir, Glidewell Laboratories) disks were embedded in acrylic. Zirconia was sandblasted with 50µm aluminum oxide at 40psi for 5sec, ultrasonically cleaned for 5min, then rinsed and dried. Lithium disilicate was etched with 9% hydrofluoric acid for 1min, then rinsed and dried. Samples then separated into testing groups (N=15) with one of following three surface pretreatments: (1) no primer applied (control) [NP]; (2) primer applied on manufacturer-indicated restoration type, with manufacturer-indicated application method and time: 14 total brands (Interface, Apex [IN]; Bis-Silane, Bisco [BS]; Cerinate Prime, Den-Mat [CP]; Silane, DMG [DS]; MonoBond Plus, Ivoclar Vivadent [MP]; Clearfil Ceramic Primer, Kuraray [CC]; RelyX Ceramic Primer, 3M ESPE [RC]; Porcelain Primer, Bisco [PP]; Silane, Ultradent [US]; Calibra Silane, Dentsply [CS]; Silane, Kerr [KS]; Ceramic Primer II, GC America [P2]; Z-Prime Plus, Bisco [ZP]; Z-Bond, Danville [ZB]); (3) universal adhesive containing MDP placed instead of primer: 2 brands (Scotchbond Universal Adhesive, 3M ESPE [SU]; Clearfil SE Bond 2, Kuraray [CS]). Using Ultradent notched shear bond strength method, resin cement stubs (Multilink Automix, Ivoclar Vivadent) were light cured at high intensity for 10sec onto samples, thermocycled 5,000 cycles (5-55°C), then debonded in universal testing device at 1 mm/min loading rate.
Results: See Table 1 (image)
Conclusions: Primers producing excellent bond to lithium disilicate all contained silane, although some silane-containing products were significantly less effective (CP, KS). Primers producing excellent bond to zirconia all contained MDP, although one MDP-containing product was significantly less effective (ZB), and one provided no bond (IN). Application of effective restoration primers significantly increased bond strength to all tested substrates. Select universal adhesives tested (SU, CS) containing MDP performed similarly to listed excellent primers with the restorative materials tested.
Methods: Lithium disilicate (IPS e.max CAD, Ivoclar Vivadent) and zirconia (BruxZir, Glidewell Laboratories) disks were embedded in acrylic. Zirconia was sandblasted with 50µm aluminum oxide at 40psi for 5sec, ultrasonically cleaned for 5min, then rinsed and dried. Lithium disilicate was etched with 9% hydrofluoric acid for 1min, then rinsed and dried. Samples then separated into testing groups (N=15) with one of following three surface pretreatments: (1) no primer applied (control) [NP]; (2) primer applied on manufacturer-indicated restoration type, with manufacturer-indicated application method and time: 14 total brands (Interface, Apex [IN]; Bis-Silane, Bisco [BS]; Cerinate Prime, Den-Mat [CP]; Silane, DMG [DS]; MonoBond Plus, Ivoclar Vivadent [MP]; Clearfil Ceramic Primer, Kuraray [CC]; RelyX Ceramic Primer, 3M ESPE [RC]; Porcelain Primer, Bisco [PP]; Silane, Ultradent [US]; Calibra Silane, Dentsply [CS]; Silane, Kerr [KS]; Ceramic Primer II, GC America [P2]; Z-Prime Plus, Bisco [ZP]; Z-Bond, Danville [ZB]); (3) universal adhesive containing MDP placed instead of primer: 2 brands (Scotchbond Universal Adhesive, 3M ESPE [SU]; Clearfil SE Bond 2, Kuraray [CS]). Using Ultradent notched shear bond strength method, resin cement stubs (Multilink Automix, Ivoclar Vivadent) were light cured at high intensity for 10sec onto samples, thermocycled 5,000 cycles (5-55°C), then debonded in universal testing device at 1 mm/min loading rate.
Results: See Table 1 (image)
Conclusions: Primers producing excellent bond to lithium disilicate all contained silane, although some silane-containing products were significantly less effective (CP, KS). Primers producing excellent bond to zirconia all contained MDP, although one MDP-containing product was significantly less effective (ZB), and one provided no bond (IN). Application of effective restoration primers significantly increased bond strength to all tested substrates. Select universal adhesives tested (SU, CS) containing MDP performed similarly to listed excellent primers with the restorative materials tested.
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