Modified composite or conventional glass ionomer for band cementation? A comparative clinical trial.
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).
Gillgrass
T J
TJ
Orthodontics, Department of Child Dental Health, Newcastle upon Tyne Dental Hospital, Newcastle upon Tyne Hospitals NHS Trust, Newcastle upon Tyne, United Kingdom.
Benington
P C
PC
Millett
D T
DT
Newell
J
J
Gilmour
W H
WH
D000293:Adolescent; D000328:Adult; D002484:Cementation; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003731:Dental Caries / Q000473:pathology; D017005:Dental Debonding; D003743:Dental Enamel / Q000648:ultrastructure; D004868:Equipment Failure; D005260:Female; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D008277:Magnesium Oxide / Q000737:chemistry; D008297:Male; D008422:Materials Testing; D008963:Molar; D016910:Orthodontic Brackets; D011076:Polycarboxylate Cement / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry*; D013223:Statistics as Topic; D018709:Statistics, Nonparametric; D013499:Surface Properties; D013997:Time Factors; D015034:Zinc Oxide / Q000737:chemistry
C104870:Band-Lok; D003188:Composite Resins; D005899:Glass Ionomer Cements; D011076:Polycarboxylate Cement; D019279:Resin Cements; D008277:Magnesium Oxide; C040235:Ketac-cem; D015034:Zinc Oxide