Abstract
Introduction: The cost of orthodontic treatment in most of the industrialized countries may considerably differ from those in third world countries. The lesser cost of orthodontic treatment, high pricing of orthodontic inventory and poor economic conditions of the people strengthen the notion of ‘recycling’ even more.Objectives: To compare the shear bond strengths of .022 slot pre-adjusted edgewise brackets with conventional mesh base design recycled by two different chair-side techniques, one being flaming/heating and other being sandblasting.Materials & Method: The sample involved eighty extracted human premolars with .022 slot pre-adjusted edgewise brackets (Orcmo, USA) bonded onto the lingual surface. After initial de-bonding the bracket base was studied under a scanning electron microscope at different magnifications for aperture size, mesh continuity and surface roughness. The brackets were re-bonded on to the labial surface of the same premolars and then debonded using a Universal Testing Machine to produce a shear force at the tooth bracket interface.Result: The study showed highest bond strengths with the control group (111.52 ± 49.90 N) and least bond strengths with the heating/flaming group (63.71 ± 22.43 N). Reduced aperture dimensions and loss of mesh continuity were characteristics of the Heating group. Sand Blasting showed significantly higher bond strengths (100.42 ± 39.42 N) with considerably rougher mesh surface texture compared to heating group.Conclusion: Sand blasting as a mode to reconditioned orthodontic bracket base provides a higher shear bond strength compared to orthodontic brackets reconditioned by heating/ flaming (p< .01).
Highlights
The cost of orthodontic treatment in most of the industrialized countries may considerably differ from those in third world countries
Sand blasting as a mode to reconditioned orthodontic bracket base provides a higher shear bond strength compared to orthodontic brackets reconditioned by heating/ flaming (p< .01)
The present study aims to compare the shear bond strength of .022 slot pre-adjusted edgewise bracket with conventional foil mesh base design recycled by two different chair-side techniques, one being flaming/ heating and the other being sandblasting
Summary
The cost of orthodontic treatment in most of the industrialized countries may considerably differ from those in third world countries. The lesser cost of orthodontic treatment, high pricing of orthodontic inventory and poor economic conditions of the people strengthen the notion of ‘recycling’ even more. One solution was to recycle orthodontic brackets.[3] The cost of orthodontic treatment in most of the industrialized countries may considerably differ from those in the third world countries. The lesser cost of orthodontic treatment, high cost of orthodontic inventory and poor economic conditions of the people makes it convenient to recycle orthodontic brackets and save expenses instead of replacing them with a new one. The orthodontist must know the best method to recycle/recondition the used bracket in order to save the patient from paying for the new bracket and at the same time saving the cost on the inventory
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