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.
3. You do have the option of getting another fixed permanent retainer, but I still recommend #1. 4. Your teeth will not decay, if you keep your permanent retainer clean by having regular cleanings, flossing and brushing. Flossing is very important. Just by having a permanent retainer on your teeth does increase the chances for a cavity.