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.
The second type of retainer is a removable retainer. There are two types to choose from â a clear retainer and a Hawley retainer. Clear retainers are made from a thin clear plastic material that contributes to both their aesthetic appearance, and the minimal time needed to become adjusted while wearing them.
Restoration: Any material or devise used to replace lost tooth structure (filling, crown) or to replace a lost tooth or teeth or holds teeth in a fixed position until the bone solidifies around them. Retainer: A removable dental appliance, usually used in Orthodontics, that maintains space between teeth or holds teeth in a fixed position until the bone solidifies around them.