Date of Award

Spring 2007

Document Type

Thesis - Restricted

Degree Name

Master of Science (MS)



First Advisor

Bradley, Gerald T.

Second Advisor

Lobb, William

Third Advisor

Liu, Dawei


Resin modified glass ionomers are used routinely in the cementation of molar bands. The purpose of this study was to investigate the degree of cure of a light cured resin modified glass ionomer (RMGI) under molar bands, as compared to a light cured resin and a dual cured resin. The three cements used were Fuji Ortho LC, Eagle Spectrum resin, and Variolink II dual-cure. Each sample was indirectly light cured for 20 seconds (10 seconds incisally, 10 seconds cervically) under sections of molar bands and the degree of cure was evaluated with micro-MIR FTIR spectroscopy. The RMGI exhibited a significantly higher mean degree of cure (55.31%) than both of the resins (Eagle: 19.23%; Variolink II: 25.42%), which did not differ significantly at a=0.05 level of significance. This study suggests that a clinically favorable degree of cure can be obtained from RMGIs under molar bands provided proper curing technique.



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