Clinical comparison between a glass ionomer cement and a composite for direct bonding of orthodontic brackets

The clinical performance of a glass ionomer cement for direct bonding of orthodontic brackets was compared with a composite resin routinely used in this procedure. Brackets were bonded, using both materials, in alternate quadrants of 16 patients of the Orthodontic Clinic of the State University of R...

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Bibliographic Details
Published in:American journal of orthodontics and dentofacial orthopedics 1995-05, Vol.107 (5), p.484-487
Main Authors: Miguel, Jose Augusto Mendes, Almeida, Marco Antonio, Chevitarese, Orlando
Format: Article
Language:English
Subjects:
Adolescent
Bisphenol A-Glycidyl Methacrylate
Chi-Square Distribution
Child
Dental Bonding - methods
Dental Cements
Dentistry
Female
Glass Ionomer Cements
Humans
Magnesium Oxide
Male
Orthodontic Brackets
Polycarboxylate Cement
Zinc Oxide
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Summary:The clinical performance of a glass ionomer cement for direct bonding of orthodontic brackets was compared with a composite resin routinely used in this procedure. Brackets were bonded, using both materials, in alternate quadrants of 16 patients of the Orthodontic Clinic of the State University of Rio de Janeiro. A total of 225 teeth, 112 in the glass ionomer cement group and 113 in the composite group, were tested. Bond failure frequencies were recorded for 12 months, and chi-square statistical test was carried out comparing the failure rates of the materials. The composite showed a statistically significant lower failure rate (7.96%) than the glass ionomer cement (50.89%), regardless of the dental arch tested. Although the glass ionomer cement presents important properties not observed in the composite, it is necessary to increase its cohesive strength to permit its clinical use for direct bonding of orthodontic brackets. (AM J ORTHOD DENTOFAC ORTHOP 1995;107:484-7.)
ISSN:0889-5406
1097-6752
DOI:10.1016/S0889-5406(95)70115-X