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Polymer Sciences | ISSN: 2471-9935
October 02-03, 2017 Chicago, USA
3
rd
International Conference on
Polymer Science and Engineering
Self-strengthening dental adhesive: Mechanism and long-term behaviour
Linyong Song
1
, Xueping Ge
1
, Qiang Ye
1
, Anil Misra
2
, Candan Tamerler
1,3
and
Paulette Spencer
1,3
1
Institute for Bioengineering Research, University of Kansas, USA
2
Department of Civil Engineering, University of Kansas, USA
3
Department of Mechanical Engineering, University of Kansas, USA
T
he degradation of methacrylate-based dental adhesives via chemical and enzymatic hydrolysis leads to destruction of the integrity
of the dentin/adhesive interface, loss of bond strength and failure of the composite restoration. Self-strengthening methacrylate-
based adhesive systems were developed by introducing visible-light irradiation induced (photoacid-induced) sol-gel reaction. The
self-strengthening mechanism and mechanical properties of copolymers were investigated by real-time Fourier transform infrared
spectroscopy (FTIR) and dynamic mechanical analyzer (DMA), respectively. HPLC was used to determine cumulative amount of
leached species. Time-temperature superposition (TTS) was employed to predict the long-term performance. The results indicated
that with the incorporation of organosilane components, self-strengthening adhesives showed 1) significantly reduced leachable
species (HEMA and BisGMA); 2) gradual increase in mechanical properties under wet conditions (neutral or acidic pH); 3) better
long-term behavior predicted by TTS. In conclusion, the mechanical properties of this resin are reminiscent of living organisms such
as marine invertebrates. These results provide valuable information for the development of dental adhesives with enhanced durability.
Biography
Linyong Song is Ph.D. is in Polymer Chemistry from the University of Science and Technology of China. He received his B.S. from Tianjin University in Polymer Engineering.
His main area of interest is Biomaterials, Interfacial Polymerization, Synthesis of Functional Monomers, Micro/Nano Structure Materials.
leonsong@ku.eduLinyong Song et al., Polym Sci, 3:3
DOI: 10.4172/2471-9935-C1-002