Phonetics vs. Phonology â¢Phonetics: the study of speech sounds â¢Phonology: the study of the sound systems of languages (sound system = inventory of sounds + rules). Phonetics vs. Phonology â¢Phonetics says: ^The /k/ in call h[k h Él] and in key [k i] are phonetically distinct.
Retainers are fitted at the end of orthodontic treatment after the braces are removed. They can be either removable or fixed onto the teeth. There are different types of retainers. The choice of retainer is affected by a number of different factors and your orthodontist will explain which retainer is best for you. Sometimes you will be recommended to wear more than one type of retainer to reduce the chances of the teeth relapsing. Types of retainers. There are lots of different types of retainers. The commonest types of retainers used in the UK are the vacuum-formed retainer, the bonded retainer and the Hawley retainer.
The retainer method. Some people can get a way with just wearing a retainer to straighten their teeth. Retainers are metal and vary a lot in how large they are (everyone has a different sized mouth and different teeth retaining needs). You'll have to discuss how a retainer would work for your teeth with your dentist.