The present invention relates to an orthodontic appliance that is fixed to a part of the mouth and corrects teeth, wherein the orthodontic appliance comprises: a device body installed in a direction perpendicular to the tongue in the central portion of the roof of the mouth; a separation unit that forms the body of the device body and extends in the longitudinal direction by pressurization of an external force to open the roof; and a fixing unit that is provided on a part of the separation unit and provides fixing force for opening the roof according to the separation of the separation unit by fixing the device body to the roof.

Easy to install orthodontic device

The present invention relates to a dental arch extension apparatus and, more specifically, to a dental arch extension apparatus with a loosening prevention function of preventing a screw from being loosened after surgery. According to the present invention, the dental arch extension apparatus comprises: a pair of first and second extension parts; an extension screw having a central part and having a first screw part formed on one side of the central part to be screw-coupled to the first extension part and a second screw part formed on the other side of the central part to be screw-coupled to the second extension part so as to adjust an interval between the first and second extension parts while being rotated; a pair of guide rods guiding movement of the first and second extension parts when the first and second extension parts are moved by rotation of the extension screw; and a loosening prevention member restricting the rotation of the extension screw by the stress within elastic limit.

Maxillary Skeletal Expander having loose stopper

Disclosed is a band type orthodontic device of which a circumference size can be adjusted according to a size of a tooth. According to the present invention, the orthodontic device comprises: a strip-shaped band strip; a band coupling part formed to penetrate one side of the band strip such that a circumference size of the orthodontic device can be adjusted; and a binding band tail extending from the other side of the band strip, inserted into the band coupling part, and connecting the one side with the other side of the band strip. According to the present invention, the orthodontic device is characterized in that a circumference size of the orthodontic device is adjustable, such that the orthodontic device can easily correspond to a size (thickness) of a tooth (target tooth) to which the orthodontic device is fixed and can be universally applicable to teeth having various shapes and sizes. In addition, use of the orthodontic device can eliminate inconvenience caused by a need to prepare various band type orthodontic devices by each size and select one that is suitable for a size of a tooth among the prepared orthodontic devices, and thus, burden of expenses caused due to preparation of the various types of orthodontic devices by each size can be reduced.

Orthodontic Appliance For Dental Treatment

According to the present invention, disclosed is a hybrid orthodontic device. The hybrid orthodontic device can ensure a rapid orthodontic procedure by simultaneously ensuring teeth set enlargement and teeth set centrifugal movement for non-extraction orthodontic treatment. The hybrid orthodontic device is installed between teeth to be extended, and applies extension power to the side of the teeth. The hybrid orthodontic device comprises: an extending unit disposed in an oral cavity between teeth disposed to be opposed to each other, and including a plurality of extension pieces coupled with each other through a screw type to apply extension power to the side of the teeth; a teeth coupling unit inserted in the outer surface of the teeth to which the extension power is to applied, including a plurality of bands coupled with the teeth, and including a plurality of wires, each of which has one end fixed to the extending unit and the other end fixed to one side of each of the bands and disposed in a radial direction; and a towing unit for towing the extending unit to the core of the teeth. The hybrid orthodontic device is installed between teeth disposed to be opposed to each other, and can ensure a space by extending a distance between teeth even without extracting a tooth by applying extension power to the side of the teeth. Also, towing power is generated in a core direction of a teeth set, so the teeth are towed to the core side of the teeth set. Thus, a space is ensured between an anterior tooth and a molar. Accordingly, orthodontic treatment can be effectively performed.

Lee Tae Hee

Papers

A hybrid orthodontic appliance for non-extraction orthodontic treatment