DE19506842A1 - Method and device for protecting the free inner arch end of a facebow during orthodontic treatment with headgear - Google Patents

Abstract

The invention concerns a method of protecting the free inner bow end of a facebow during orthodontic treatment, wherein the protective device can be secured to the inner bow at any time without the need for soldering. If the inner bow moves out of the molar tube, its pointed end is protected all-around by a soft, resilient and wider shock-absorbing member. In this way the risk of stab wounds to the skin, mucosa and, in particular, the eyes during orthodontic treatment involving headgear is avoided.

Description

The present invention relates to a method for protecting the free Inner arch end of a facebow during orthodontic treatment with headgear, so that there is a risk of stab injury to the skin, mucous membrane and especially the Eyes can be avoided through the pointed end of the inner arch.

State of the art

Headgear is a common orthodontic device for moving teeth in the sagittal direction dorsally. The headgear ( Fig. 1 and 1a) consists of the facebow and the extraoral pull as a source of power. Forces generated by elastic traction ( 1 ) are usually transmitted to the first large banded molars ( 4 ) in the upper jaw, supported on the neck ( 2 ) via a facial arch ( 3 ), in order to move them dorsally. The facebow consists of two parts, which are laser-welded in the middle: the outer bow ( 5 ) lying outside the mouth and the inner bow ( 6 ) lying in the mouth. The headgear inner bow engages in round tubes on molar bands, where the bow is in front of these molar tubes ( 7 ) either by bending a bayonet-like kink or attaching a stop screw (Dentaurum company) or a clamping ring with special pliers (Forestadent company) to slide through Molar tubes hindered.

If the inner bow from the molar tube, e.g. B. when sleeping, gets out The outer bow continues to connect to the neck band, the pointed end of the Internal arch leads to stab injury to the oral mucosa or facial skin. A method is known that a protective ring is soldered to the end of the inner arc to protect the pointed end of the inner arch (Moffat and Roger 1994). At the Impact of the headgear on the mucous membrane hits the protective ring and not that pointed end of the inner arch on the mucous membrane, so that the Risk of stab injury can be avoided.

Laboratory effort is required for this purpose. The protective ring must be soldered to the inner bend in the laboratory and cannot be carried out in every practice. The solder joint can dissolve in the oral environment over time. This method also does not guarantee all-round protection. The side on which the inner arch lies is still the unprotected side. If the inner bow soldered with a protective ring hits an oblique mucous membrane or skin surface ( 8 ), the end of the inner bow can hit the mucous membrane or skin despite the protective ring and cause injuries ( Fig. 2).

The invention is therefore based on the object, a method and a To create device so that no soldering of the protective ring on the inner arch and therefore no laboratory effort is required. In addition, an all-round Protection can be guaranteed.

This object is achieved in that the protective ring laser-welded with a screw. The guard ring is additional provided with a protective tube made of soft plastic.  

The device for performing the above method is invented appropriately characterized by:

• 1. a protective ring ( 9 ) which has a U-loop shape at one end. The other end is laser welded with a screw ( 10 ) ( Fig. 3). The guard ring and screw can also be cast in one piece. With this screw, the protective ring can be screwed on at any time and anywhere on the inner arch. This screw is only used to attach the protective ring to the inner arch and, because of the risk of exposing the inner arch end by slipping the screw together with the protective ring, should not have a stop function, i.e. the inner arch should not be prevented from sliding through the molar tubes by attaching this screw but only by bending a bayonet-like kink become.
• 2. A protective tube ( 11 ), which consists of soft plastic and has been attached to the U-loop of the protective ring. Because it is elastic, the protective tube can pass by sliding from one side into the other side of the U-loop of the protective ring over the angle (c) between the two sides, e.g. B. from side (a) to side (b) or vice versa.

There is also a modified form, whereby only one leg of the U-loop is laser-welded to the screw or cast into one piece with the screw. The other leg is exposed. The protective tube can be renewed by appropriately bending the angle (c) ( FIG. 5).

When inserting the headgear, a bayonet-like kink is first attached to the inner arch as usual, then the inner arch is shortened to the correct length. The protective ring is screwed directly behind the bayonet-like bend on the inner arch and the protective tube is pushed to the side (a). The patient inserts the headgear, pushes the inner bow into the molar tube and then the protective tube to the side (b). It stays on the side (b), does not slide back to the side (a) due to the angle (c), only under external force (e.g. the patient pushes it back into the other side) can the angle ( c) happen. The protective tube lying on the side (b) completely protects the free end of the inner bow as it emerges from the molar tube ( FIG. 4) and acts better as a shock absorber when the inner bow and the mucous membrane collide than the protective ring made of metal. Because of its elastic properties, the protective tube does not cause any difficulty in pulling the facebow out of the molar tube.

benefits

The protective ring can be used at any time and anywhere on the inner arch be screwed tight. The pointed end of the inner arch is completely covered by the soft, elastic protective tube, which acts as a shock absorber for the Collision between the inner arch and the mucous membrane works.

The following is an embodiment of the present invention explained in more detail with reference to the following figures. Show it

Fig. 1 of the usual headgear with face bow and neckline in use.

Fig. 1a supervision of the usual headgear.

Fig. 2 supervision of the inner bow end soldered with a customary protective ring.

Fig. 3 side view of the device screwed to an inner arch end.

Fig. 4 supervision of the device screwed to an inner arch end.

Fig. 5 side view of the modified form.

Reference list

1 elastic cables
2 neck support
3 face bows
4 molars with a band
5 outer bow of the face bow
6 inner bow of the face bow
7 molar tubes
8 skin or mucous membrane
9 protection ring
10 screw
11 protective tubes
a the side of the guard ring
b the rear side of the guard ring
c is the angle between the two sides (a) and (b)

Claims (5)

1. A method for protecting the free inner arch end of a facebow during orthodontic treatment with headgear by a protective device, characterized in that the protective device can be attached to the inner arch at any time without soldering. 2. Procedure for protecting the free inner arch end of a facebow during orthodontic treatment with headgear through a protective device, characterized in that the pointed end of the inner arch when it exits from the molar tube completely of a soft, elastic and wider Shock absorber protected. The insertion and removal of the inner arch is despite this Protection device possible. 3. Device according to claim 1, characterized in that the protective device

• - Can be made of plastic or metal.
• - can have a shape like a ring or a U-loop shape.
• - is connected with a screw or a clamping ring.

4. The device according to claim 2, characterized in that the protective device has a U-loop shape and with one made of soft and / or elastic material (e.g. plastic...) existing protective tube. Because it's soft and / or is elastic, the protective tube can be slid from one side the other side of the U-loop of the guard ring over the between the two sides angle. That on the side (side a) of the U-loop the protective tube does not prevent the inner bend from being inserted into the Molar tube. If it is on side (b), the protective tube protects it pointed end of the inner arch as it emerges from the molar tube completely and acts as a shock absorber in the collision between the inner bow and the mucous membrane. This is due to its soft, elastic properties Protective tube also pulling the facebow out of the molar tube no difficulty. 5. The device according to claim 2, 3 and 4, characterized in that the modified form of the protective device according to Fig. 5 allows to carry out a renewal of the protective tube.