These are the most common type of orthodontic braces and often still referred to as the gold standard in teeth straightening.  

They're not the most discreet or "prettiest"  and usually described a "train tracks", but the advantages are that they are able to fine-tune the position of the teeth reliably and with modern sophisticated designs they are smaller and relatively fast acting to reduce treatment time. This will enable you to achieve that great smile in a shorter space of time. 

You can opt for clear ceramic brackets for a more aesthetically pleasing smile.