A lingual brace is like a normal brace, except it faces the lingual side of your mouth, it is put on your teeth not facing outwards, towards your mouth, but on the inside on your face, facing your tongue. This is the definition of a lingual brace.
These types of dental braces can be administered for almost any treatments, however, certain alignments need to be adjusted from the outside, especially if headgear is involved. These are rare, however, and almost every adult tooth realignment can be solved with lingual braces.
Due to the positioning of lingual braces, almost all of them are self ligating, which means that lingual braces are considerably more expensive than buccal, or normal, run of the mill orthodontic braces.
Added extras are that patients usually report lingual braces as being more comfortable. If put on correctly, lingual braces do not touch the inside of the mouth, that buccal braces might do. The inside of the mouth is like a giant mucus membrane, and it can get scratched up and damaged from being worn. The only organ that can experience bruising or damage from lingual braces is the tongue. Braces can sometimes also demineralize pockets of your teeth, which can be unsightly and manifest as ugly stains or discoloration on your teeth. With lingual braces, these pockets will be invisible, as they are located in the inside of your mouth.