BIEDERMAN APPLIANCE HYGIENIC RAPID EXPANDER

BIEDERMAN APPLIANCE/HYGIENIC RAPID EXPANDER (HYRAX APPLIANCE)

Also called RAPID PALATAL EXPANDER

The more commonly used banded RME appliance. Made of stainless steel. Bands are placed in maxillary 1^st and molars and 1^st premolars. The expansion screws are placed in palate in close proximity to palate contours

Attached to the upper molars through bonding or by cemented bands, the Rapid Palatal Expander is an orthodontic device used to create a wider space in the upper jaw.

Your teeth should touch at the same time when you bite. If your teeth don't touch, a Hyrax Expander can be used to treat orthodontic issues such as narrow palate and crowded teeth, providing the palate expansion that helps align your jaw and teeth.

The appliance compresses the periodontal ligament, bends the alveolar process, tips the anchor teeth, and gradually opens the mid-palatal suture and all the other maxillary sutures.

The age limit to use HYRAX between the age of 8-12 years, the risk of expansion failure increases after the age 15 years.