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« Back to Glossary Index

Definition and Function of Quad Helix
- Quad helix is an orthodontic appliance for the upper teeth.
- It is cemented in the mouth and attached to molars with bands.
- Its main function is to widen the arch of the mouth and correct posterior cross-bite.

Materials and Indications
- Quad helix is made from 38 mil stainless steel wire.
- It is primarily indicated in mixed dentition, cleft patients, and thumb-suckers.
- There is a variety of quad helix with attachments welded to bands for adjustment.
- It is used for narrow top jaw, cross bite, and crowded teeth.
- The appliance expands the upper arch by pushing teeth outwards.

Evolution of Quad Helix
- The precursor to quad helix was the coffin spring.
- Later developments included tri-helices and bi-helices.
- Quad helix has two or four active helix springs.
- It is designed to widen the arch more effectively than previous designs and provide better treatment outcomes.

References
- Mitchell, Laura. 'An Introduction to Orthodontics'. Oxford University Press.
- Singh, Gurkeerat. 'Textbook of Orthodontics' (2nd ed.). New Delhi: Jaypee Brothers Publishers.
- Charles B. Bolton
- Holly Broadbent Sr.
- Allan G. Brodie

Categories and Expansion
- Orthodontic appliances
- Dental equipment
- Dentistry stubs
- Dentistry article is a stub
- Wikipedia page can be expanded to provide more information

« Back to Glossary Index
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