Resin-modified glass ionomer cement vs composite for orthodontic bonding: A multicenter, single-blind, randomized controlled trial
Loading...
Files
Accepted Version
Date
2019-01
Authors
Benson, Philip E.
Alexander-Abt, Jonathan
Cotter, Stephen
Dyer, Fiona M. V.
Fenesha, Fatma
Patel, Anjli
Campbell, Ciara
Crowley, Niamh
Millett, Declan T.
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Inc.
Published Version
Abstract
Introduction: In this study, we aimed to compare the incidence of new demineralized lesions and bond failures between 2 groups of participants wearing fixed orthodontic appliances bonded with either light-cured resin-modified glass ionomer cement or light-cured composite. Methods: This trial was a multicenter (6 centers: 2 teaching hospitals, 4 specialist orthodontic practices), single-blinded, randomized controlled trial with 2 parallel groups. Patients aged 11 years or older, in the permanent dentition, and about to start fixed orthodontic treatment in these 6 centers were randomly allocated to have either resin-modified glass ionomer cement or light-cured composite for bonding brackets, forward of the first molars. Pretreatment and day-of-debond digital photographic images were taken of the teeth and assessed by up to 5 clinical and 3 lay assessors for the presence or absence of new demineralized lesions and the esthetic impact. The assessors were masked as to group allocation. Results: We randomized 210 participants, and 197 completed the trial. There were 173 with complete before-and after-digital images of the teeth. The incidence of new demineralized lesions was 24%; but when the esthetic impact was taken into account, this was considerably lower (9%). There was no statistically significant difference between the bracket adhesives in the numbers with at least 1 new demineralized lesion (risk ratio,1.25; 95% confidence interval, 0.74-2.13; P = 0.403) or first-time bracket failure (risk ratio,0.88; 95% confidence interval, 0.67-1.16; P = 0.35). There were no adverse effects. Conclusions: There is no evidence that the use of resin modified glass ionomer cement over light-cured composite for bonding brackets reduces the incidence of new demineralized lesions or bond failures. There might be other reasons for using resin modified glass ionomer cement.
Description
Keywords
Resin modified glass ionomer cement , Light-cured composite , Bonding brackets , Demineralized lesions , Bond failures
Citation
Benson, P. E., Alexander-Abt, J., Cotter, S., Dyer, F. M., Fenesha, F., Patel, A., Campbell, C., Crowley, N. and Millett, D. T. (2019) 'Resin-modified glass ionomer cement vs composite for orthodontic bonding: A multicenter, single-blind, randomized controlled trial', American Journal of Orthodontics and Dentofacial Orthopedics, 155(1), pp.10-18. doi: 10.1016/j.ajodo.2018.09.005