IADR Abstract Archives
Characteristics of a New Core Build-up System “NDC-100” and “MTB-200”
Kuraray Medical Inc. has developed a core build-up system consisted of a new dual-curing composite resin "NDC-100" and a new one bottle self-etching bond system "MTB-200". "NDC-100" is a two-paste formula composed of methacrylate monomers, initiators, new polymerization accelerator and fillers delivered in an auto-mix dual-syringe. "MTB-200" is a single-component and light-cured single-step bonding system which contains an adhesive phosphate monomer (MDP) and chemical initiator to work effectively with "NDC-100" in self-curing mode.
Objectives: The purpose of this study was to compare tensile bond strength of the core build-up system "NDC-100" and "MTB-200" with those of other commercially available core materials (CLEARFIL DC CORE AUTOMIX; Kuraray medical, LuxaCore Dual; DMG, Rebilda DC; VOCO, ESHTELITE-CORE QUICK; Tokuyama Dental, Unifil Core EM; GC).
Methods: Bovine dentin surfaces were treated with core build-up systems according to each manufacturer's instructions. All the specimens were immersed in water at 37˚C for 24 hours prior to performing the tensile bond strength test.
Results: Table. 1 showed the tensile bond strength of each core build-up systems to bovine dentin.
Table. 1 MPa(SD)
Core build-up system | Curing condition; Composite/Bond | |||
Core material | Bond | Bonding system | light/light | self/self |
NDC-100 | MTB-200 | One bottle One step | 18.5(6.4) | 12.4(2.8) |
DC CORE AUTOMIX | DC BOND | Two bottle One step | 17.6(5.1) | 7.5(1.3) |
LuxaCore Dual | Contax | Three bottle Two step | 9.9(2.7) | 2.3(2.2) |
Rebilda DC | Futurabond DC | Two bottle One step | 6.2(3.0) | 1.3(1.2) |
ESTHELITE CORE QUICK | ESTHELITE CORE QUICK BOND | Two bottle One step | 17.3(6.4) | 10.2(5.5) |
Unifil Core EM | Unifil Core EM Self etching Bond | Two bottle One step | 12.3(3.2) | 7.2(4.1) |
Conclusions: New core build-up system "NDC-100" and "MTB-200" showed the highest bond strength to bovine dentin both in light/light and self/self mode among the evaluated core build-up systems.