Different types of Orthodontics

What are the different types of orthodontic appliances?

Metal

(1)

Clear

(2)

Invisalign

(3) Sure smile

http://www.suresmile.com/

References-

(1) http://t3.gstatic.com/images?q=tbn:ANd9GcSET5ZulIOnwHwJjV7CYu4EjLGjshShB5Uwyh6njhuQt

PtIWWcjsep7qR4

(2)Rothstein, D. T. (n.d.). Dr. Ted's orthodontic office. Retrieved November/December, 2011, fromhttp://www.drted.com/Clear-Metal-Braces-

(3)What is dentistry. (n.d.). Retrieved November/December, 2011, from http://whatisdentistry.com/wp-content/uploads/2011/07/What-Is-An-Orthodontist.jpg Comparison.jpg