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Modified composite or conventional glass ionomer for band cementation? A comparative clinical trial
T J Gillgrass1, P C Benington, D T Millett
1Orthodontics, Department of Child Dental Health, Newcastle upon Tyne Dental Hospital, Newcastle upon Tyne Hospitals NHS Trust, Newcastle upon Tyne, United Kingdom.
Abstract:
The time to first failure, the position of band failure at deband, and the change in enamel white spot lesions of teeth bonded with a modified composite or a conventional glass ionomer were compared in a randomized half-mouth trial over the full course of orthodontic treatment. One hundred forty band pairs were cemented in 98 subjects. Overall band failure rates of 5% and 2.8% were recorded for the modified composite and the conventional glass ionomer, respectively, with no significant difference found between their times to first band failure. At the end-of-treatment deband, the position of band failure was predominantly at the enamel-cement interface for the modified composite and at the band-cement interface for the conventional glass ionomer (P <.001). A comparison of changes in mean enamel white spot lesion scores during treatment did not reveal significant differences between the cement groups (P =.16).