Orthodontic Appliances Clinical Trial
Official title:
Micro-abrasive Blasting vs Acid Etching of Orthodontic Bracket Bases: A Scanning Electron Microscope Study and an Eighteen Month Randomized Clinical Control
To describe a method of acid etching the base of a bracket, and to compare the bond failures between micro-abrasive blasted (sandblasted) brackets and acid etched brackets over an eighteen month period
The aims of this randomized control trial are:
1. To describe a method to chemically etch the bases of stainless steel orthodontic
brackets.
2. To observe the changes in the micro-structure of the brackets with sandblasted bases and
acid-etched bases under an electron microscope.
3. To compare the failure of orthodontic brackets with a chemical etched base versus a
sandblasted base bonded with composite using the conventional acid etch technique, over
a follow-up of 18 months
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