Impact of Food Simulants Material on Orthodontic Bond Strength after Application of Caries Infiltrant Resin (In Vitro Study)
Keywords:Orthodontics, Food simulants, bonding strength, Resin Infiltration; Icon, caries infiltrant resin, White spot lesion.
Objective: To investigate the effect of using different food simulant materials on the shear bond strength
(SBS) of orthodontic bracket after Icon application. DESIGHN: Laboratory study. SETTING: Pediatric
dentistry, Orthodontics & Prevention dentistry department, Dentistry College, Kufa University & department
of materials, Technology university.
Methods: Metal brackets were bonded to 48 extracted premolars and were randomly arrange for three
categories with 16 teeth for each, revealing the storage solutions, which were distilled water, 50% aqueous
ethanol (alcoholic food), and corn oil (fatty food). Then each category was split for two subgroups, with 8
teeth describing Icon application, all specimens are immersed in their corresponding food simulants for 30
days. After the completed proposed time, the specimens were debonded by using an Instron apparatus to test
the SBS. Results: Results showed significantly diminished the bond strength of orthodontic adhesive after
holding the specimens for 30 days in the food simulants specially ethanol (highest for 50% ethanol, less for
corn oil & least for D.W). Icon categories showed higher SBS rather than non-Icon categories. Conclusion:
Application of Icon on enamel will increase the bond strength & the food simulating agents especially food
and rinses containing ethanol could influence the orthodontic bond strength which causes bond failure so
that the clinicians should inform their patients concerning their possible adverse effects and complications.