DE2857736C2 - Intraoral orthodontic appliance - Google Patents

Description

State of the art

When the lower jaw is reclined and the frontal sagittal step is very pronounced, it is known that so-called. To use double feed plates that push the lower jaw forward (magazine »Zahnärztliche Praxis ", Volume 28, Issue 17, 1977, September 2, 1977, pages 392-398). On one to be attached to the upper jaw first plate there are obliquely forward webs, which when closing the mouth a Inclined plane, which is provided on the plate to be attached to the lower jaw, pushes forward to the To achieve the effect of a function control. The web length is particularly critical because it is too long when used short bars, the lower jaw is not advanced enough because the patient's mouth is open. at Use of bars that are too long often results in injuries to the floor of the mouth.

In tooth regulation, it is also known to attach magnets to individual teeth or groups of teeth, which interact with another magnet that is attached to a tooth to be regulated is (DE-OS 27 53 640).

task

The invention specified in claim 1 is based on the object of an orthodontic apparatus of the type specified in the preamble of claim 1 to the effect that the sphincters of the Mouth while holding the plates in their closed position are supported in order to increase the regulating effect strengthen.

advantages

With the orthodontic apparatus according to the invention it is achieved that the magnets or a Magnet and a block of soft iron exert magnetic forces on each other to pull the plates together. This eliminates the need for mechanical parts that could get dirty and requires maintenance would require, achieved that the plates pulled into the closed position of the mouth for a long time in which the greatest regulatory force is at work The patient's mouth to close muscle power to be applied is reduced. This contributes to a considerable relief of the patient and to Promotion of the regulatory effect.

Advantageous further developments of the invention are described in the subclaims.

According to claim 2, two magnets are used instead of the otherwise usual webs that the plates relatively move towards each other in the sagittal direction. The magnets are on the plates of the upper jaw and The lower jaws are offset against each other. The magnets do not only cause the closing movement of the mouth supports, but also the regulation force applied in the sagittal direction webs or sliding elements or sliding surfaces are not required at all in this case. According to claim 3 is a Sliding device available, so that the regulating effect between the pines or the plates initially takes place by the sliding device and is then taken over by the magnets. The magnets work the The opening muscles of the mouth counteract and support the closing muscles of the mouth.

Presentation of the invention

The invention is explained in more detail below using an exemplary embodiment. It shows

F i g. 1 is a plan view of an upper jaw and a lower jaw, each with the relevant plates and

F i g. 2 shows a sagittal section through the apparatus located in a patient's mouth as it is being closed of the mouth.

In Fig. 1 is the upper jaw of a dentition with 30 and the lower jaw of the same set of teeth is designated by 31.

On the upper jaw 30 is a plate 32 with wire clips 33, which grip around the teeth, attached and on the The lower jaw 31 is attached to a second plate 34 with wire clips 35 that encompass the teeth. To the To press the lower jaw forward, are on the plate 32 of the upper jaw obliquely downward protruding, im substantial rigid wire rods 36,37 attached. When the mouth is closed, the inclined wire rods grip 36, 37 on a rear transverse surface 38 of the plate 34 of the lower jaw. This is with increasing closing movement of the mouth, the lower jaw is pressed forward. Since closing the Mouth for the patient rarely occurs or only occurs when swallowing, the mouth with a such orthodontic appliance is often kept open. In the plate 32 and in the plate 34 is off For this reason, a magnet 39, 40 is used. The two magnets, which according to FIG. 2 each other with opposite poles are opposite, pull the plates 32 and 34 against each other and thus support the effectiveness of the treatment by encouraging the mouth to close.

For this purpose 2 sheets of drawings

Claims (3)

Patent claims: 1. Intraoral orthodontic appliance, with a first plate to be attached to a jaw and a second plate to be attached to the opposite jaw as well as to the both plates attached cooperating coupling elements, which when closing the mouth transmits a horizontal force component between the two plates, characterized in that that on both plates (32, 34) magnets (39, 40) or a magnet on one plate and a soft iron block on another plate are attached, which support the closing movement of the mouth. 2. Orthodontic apparatus according to claim 1, characterized in that the magnets are arranged offset from one another in the sagittal direction on the two plates. 3. Orthodontic apparatus according to claim 1, characterized in that on the first Plate (32) at least one sliding element (36, 37) projecting obliquely downwards is attached, which engages a sliding surface (38) of the second plate (34) and when the mouth is closed a horizontal force component between the two plates transfers and that on the plates (32,34) the Magnets (39, 40) are attached opposite one another in the closed state.