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Strength of a New Protective Coating
K.M. CUMMINGS, and R.P. RUSIN, 3M ESPE Dental Products, Saint Paul, MN, USA | Objective: Compare the compressive strength (CS)
and diametral tensile strength (DTS) of different glass ionomer materials used
to seal dentin. The materials used were one experimental material (EXP), and
commercial materials: 3M™ ESPE™ Vitrebond™ Plus Liner/Base (VBP), and GC
Fuji™ Triage (FT). EXP is a resin-modified glass ionomer coating material in a
paste/paste delivery.
Methods: Samples were cured in 4mm diameter glass
tubes with the paste held under axial compression, then cut to 8mm (CS) and 2mm
(DTS) in length. Specimens were conditioned in de-ionized water at 37 °C for
24 hours prior to testing on an Instron machine. Data were analyzed via
one-way ANOVA and compared with Tukey's T-test (p<0.05).
Results: CS and DTS in MPa are shown below.
| CS(stdev) | DTS(stdev) | EXP | 119.6(8.4) | 26.8(3.1) | FT | 108.3(46.6) | 15.8(2.3) | VBP | 106.1(8.5) | 21.5(3.2) |
Conclusions: CS was not statistically different for
all materials; DTS was not statistically different for all materials. EXP has
physical properties suitable for providing a coating to seal dentin
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Seq #127 - Physical Properties of Resin Composites and Glass Ionomers 2:45 PM-3:45 PM, Friday, April 4, 2008 Hilton Anatole Hotel Trinity I - Exhibit Hall |
Back to the Dental Materials 6: Polymer-based Materials - Physical Properties and Performance Program
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