Enamel around orthodontic brackets coated with flash-free and conventional adhesives

Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie
Mohamed Tarek ElSherifaMona A Montasser

Abstract

To evaluate enamel roughness and color after debonding flash-free adhesive precoated brackets and brackets coated with conventional orthodontic adhesives using nonbonded enamel as control. A total of 80 extracted human premolars were divided into the following four groups: group I: APCTM Flash-Free adhesive precoated brackets; group II: APCTM PLUS adhesive precoated brackets; group III: noncoated brackets, which were coated manually at the time of bonding (all three brackets were ClarityTM Advanced ceramic brackets [3M Unitek, Monrovia, CA, USA]); group IV: nonbonded enamel (control). Bonded premolars were subjected to demineralization, and then brackets were debonded. Each group was then divided into two subgroups to assess enamel around the debonded brackets, and also enamel in the control group, using an atomic force microscope and spectrophotometer. In addition, 12 samples were used to assess the bracket/adhesive/enamel junction with a scanning electron microscope. Mean values of root mean square roughness (Rq) and maximum profile valley depth (Rv) for APCTM Flash-Free, APCTM PLUS, and ClarityTM Advanced groups were 140 nm and 482 nm, 210 nm and 727 nm, and 447 nm and 1243 nm, respectively. All three groups showed higher ro...Continue Reading

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Related Papers

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
Paragh VigAnthony J Ireland
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