In vivo bonding of orthodontic brackets to fluorosed enamel using an adhesion promotor.
OBJECTIVE
To determine the success of bracket retention using an adhesion promoter with and without the additional microabrasion of enamel.


METHODS
Fifty-two teeth with severe dental fluorosis were bonded in vivo using a split-mouth design where the enamel surfaces of 26 teeth were microabraded with 50 microm of aluminum silicate for 5 seconds under rubber dam and high volume suction. Thirty-seven percent phosphoric acid was then applied to the enamel, washed and dried, and followed by placement of Scotchbond Multipurpose Plus Bonding Adhesive. Finally, precoated 3M Unitek Victory brackets were placed and light cured. The remaining teeth were bonded using the same protocol but without microabrasion.


RESULTS
After 9 months of intraoral service, only one bond failure occurred in the control group where microabrasion was used. Chi-square analysis revealed P = .31, indicating no statistical significance between the two groups.


CONCLUSIONS
Bonding orthodontic attachments to fluorosed enamel using an adhesion promoter is a viable clinical procedure that does not require the additional micro-mechanical abrasion step.
Noble
James
J
Division of Orthodontics, University of Manitoba, Winnipeg, Canada. umnoble@cc.umanitoba.ca
Karaiskos
Nicholas E
NE
Wiltshire
William A
WA
D000268:Adhesiveness; D000293:Adolescent; D002648:Child; D001840:Dental Bonding; D003743:Dental Enamel / Q000473:pathology*; D019243:Enamel Microabrasion; D005260:Female; D009050:Fluorosis, Dental; D006801:Humans; D016910:Orthodontic Brackets; D011446:Prospective Studies; D019279:Resin Cements
D019279:Resin Cements; C425844:Scotchbond Multi-Purpose Plus