Liquid nitrogen is very cheap because it is a by-product of the production of liquid oxygen. Nitrogen is obtained from liquid air by distillation at -196Â°C. The gas obtained by this process is actually a mixture of nitrogen and about 1.25% noble (or inert) gases, argon, neon, krypton, and xenon.
Damon braces or any of the self-ligating bracketing systems are pretty standard now in orthodontic offices. It varies greatly by city or region, depending where you live, so anywhere between $4000 and $6000.
The cost of braces varies, depending on your needs, age, and type of braces desired. A broad figure of $5,000 is the norm, but additional costs may be incurred for lingual (behind the teeth) braces, ceramic brackets (which are less visible), molds, x-rays and extractions (to make room for moving teeth).