Even your cosmetic dentist will suggest you to opt for them if you have any missing teeth or deteriorating back or front tooth to be replaced. Clearly they are the next best thing to have ever come to rescue and restore your smile in a long time ever since we stumbled upon the most advanced and invisible braces and other kinds of retainers. They are made out of titanium and so you can rest assured that they are very strong, reliable and needless to mention the number of patients that have preferred them over the past few years would vouch for them being superlatively comfortable as well.