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.
A brace can cost about $10 -$60 for an over-the-counter model -- or from $500-$2,000 or more for a custom-made brace. For example, FootSmart.com charges about $10-$60 for over-the-counter braces and supports for flat feet. MMAR Medical Group charges about $500 for a custom-made Richie Brace . Patients on a forum at HealthBoards.com report costs of $1,000-$2,000 for a custom made Arizona Brace .