Orthodontics used to be called orthodontia - the word comes from the Greek orthos, meaning "straight, perfect or proper", and dontos, which means "teeth".
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Orthodontics also includes cosmetic dentistry; when the patient's aim is to improve his/her appearance.
An orthodontist uses a range of medical dental devices, including headgears, plates, braces, etc. to help in:
- Closing wide gaps between the teeth
- Making sure the tips of the teeth are aligned
- Straightening crooked teeth
- To improve speech or eating (oral function)
- To improve the long-term health of gums and teeth
- To prevent long-term excessive wear or trauma (of the teeth)
- Treating an improper bite
Source : medicalnewstoday