New initiator system for bonding to dentin using methylcyclohexanedione

Dental Materials Journal
Y Imai, M Ishikawa

Abstract

As a part of a series of studies to examine the role of the initiator system in dentin bonding, the effectiveness of a new polymerization initiator system consisting of 2-methyl-1,3-cyclohexanedione (MCHD) and CuCl2 in dentin bonding was investigated in terms of the effects of dentin conditioners and CuCl2 concentration formulated in MMA/PMMA resins. Curing time and tensile bond strength to bovine dentin were measured using resins composed of MMA containing 0.001-0.03 wt% CuCl2 and PMMA powder containing 2 wt% MCHD. The dentin surfaces were treated with six conditioners consisting of 10 wt% phosphoric acid or citric acid containing 0-3 wt% FeCl3 or CuCl2. The bond strengths of about 10 MPa obtained under optimal conditions were comparable to those reported for tributylborane-initiated MMA resin which is one of the most effective bonding resins available. Thus, the resin using MCHD/CuCl2 system was concluded to be very effective for dentin bonding, especially when dentin was treated with acidic conditioners containing ferric or copper chloride.

Citations

Jul 10, 1999·Journal of Dentistry·C J WhittersD Wood
Jul 1, 1997·Dental Materials : Official Publication of the Academy of Dental Materials·J Y ThompsonP Stamatiades

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