CN203736340U - Multipurpose space retainer for premature shedding of deciduous tooth - Google Patents

Abstract

The utility model provides a multipurpose space maintainer for premature loss of deciduous teeth, which comprises a belt ring (1), a sleeve (2) arranged on the belt ring and a supporting arm matched with the sleeve (2); the sleeve (2) is a hollow cylinder, one end of which is connected to the belt ring (1), and the other end is open; the support arm includes a support rod (3) and a support surface (4), and one end of the support rod (3) passes through the sleeve (2) ) is inserted into the sleeve (2), the support rod (3) is slidingly connected to the sleeve (2), and the other end of the support rod (3) is connected to the support surface (4). Matching concave. The utility model has the advantages of simple structure and convenient use, and can complete the production and wearing of the retainer at one time, simplifies the treatment process, reduces the number of follow-up visits of patients, and can be used for the treatment of gap loss.

Description

A multi-purpose space maintainer for premature loss of deciduous teeth

technical field

The utility model belongs to the technical field of children's oral occlusal induction, in particular to a multipurpose space maintainer for premature loss of deciduous teeth. the

Background technique

Premature loss of primary teeth is a common case in pediatric dentistry. Dental caries is the most common in children's oral diagnosis and treatment. Simple caries can save the affected teeth through appropriate treatment until the deciduous teeth are replaced. However, severe caries of deciduous teeth will lead to apical periodontitis of deciduous teeth, root resorption, crown disintegration, tooth loosening and other symptoms, and eventually the teeth will fall out early or be extracted therapeutically in advance because they cannot be preserved. If the deciduous teeth are not dealt with prematurely, the adjacent teeth may shift to the side of the gap, or even completely occupy the gap, and the successor permanent teeth that should erupt along this position in the future will lack the eruption gap, making eruption difficult. Part of the permanent teeth are abnormally formed, and the roots are abnormally resorbed, which is the result of ectopic eruption of the permanent teeth. Therefore, the production of space maintainers after the premature loss of deciduous teeth has become a routine practice in pediatric dentistry. the

However, the manufacturing process of the existing space maintainer for deciduous teeth is cumbersome and the course of treatment is long, which affects the development of clinical application of the space maintainer. In the treatment process, after the tooth extraction wound is healed, the intraoral impression is made, the ring is tested, and the plaster model is poured, and then the arm end of the retainer is bent by the technician, welded, polished and polished, and finally the doctor tries it in the patient's mouth. To wear, to bond. The whole process generally lasts one week in clinical application, and patients need at least two follow-up visits. And because of this kind of welded gap retainer, because there is a welding point on the occlusal contact side, and this position is the occlusal force part, long-term occlusal pressure is likely to cause desoldering and damage to the retainer. the

Utility model content

Aiming at the deficiencies in the prior art, the utility model proposes a multi-purpose space maintainer for premature loss of deciduous teeth. the

In order to solve the above technical problems, the utility model adopts the following technical solutions:

A multi-purpose space maintainer for premature loss of deciduous teeth, characterized in that it includes a belt ring (1), a sleeve (2) arranged on the belt ring, and a supporting arm matched with the sleeve (2); the sleeve (2) is a hollow cylinder, one end of which is connected to the belt ring (1), and the other end is open; the support arm includes a support rod (3) and a support surface (4), and one end of the support rod (3) passes through the sleeve (2) ) is inserted into the sleeve (2), the support rod (3) is slidingly connected to the sleeve (2), and the other end of the support rod (3) is connected to the support surface (4), which is shaped like a tooth Fitted concave.

The surface of one end of the support rod (3) inserted into the casing is rough or threaded. the

A tweezers titanium spring may be arranged between the support rod (3) and the casing (2). the

The materials of the belt ring (1), the casing (2) and the support arm are stainless steel. the

When using, first select the appropriate size of the belt ring, then insert the support rod of the support arm into the sleeve on the belt ring and try it on the retained abutment together, adjust the length of the support arm to make it close to the other side abutment. Use orthodontic pliers to clamp the cannula, deform it and secure the struts. After the whole is removed, apply a cementing material, and bring it back in to make it bonded and fixed. the

The above-mentioned device for fixing the support arm can adopt special-purpose pliers, needle holders, technician pliers, etc., and the inner diameter of the special-purpose pliers used is slightly smaller than the sleeve outer diameter. the

The connection interface between the sleeve of the retainer and the support rod is a tightly connected sliding connection. The end surface of the support rod near the body of the holder has rough indented lines, and the sliding link between the two parts can be deformed and indented through the deformation of the sleeve, so that the two parts are relatively fixed.

A conventional orthodontic nickel-titanium push spring can be placed between the sleeve and the support rod of the retainer as an accessory, and the spring can be compressed to expand the distance between the two parts. At this time, the connection between the two parts is a sliding connection. the

The retainer sleeve and the support arm are matched to each other, and can be designed as a single-tube or double-tube type, and the distal connection end of the retainer support arm is designed to fit the concave surface of the teeth. the

Compared with the prior art, this patent has the following advantages and beneficial effects: 

1. The production process of the existing space maintainer for premature loss of deciduous teeth is cumbersome and the cycle is long. And this patent can be operated independently by the doctor. The steps of making an impression, pouring a plaster model, bending the arm end of the retainer, welding and polishing the retainer are omitted. The whole process is completed at one time, reducing production costs and reducing the number of follow-up visits for patients.

2. The wearing time of the space maintainer for the premature loss of deciduous teeth is usually 2-3 years, and it can even reach 4-5 years if the deciduous teeth are lost prematurely. Therefore, the manufacturing quality of the space maintainer is particularly important. The existing deciduous tooth space retainer is to weld the band ring and the arm end of the retainer by silver alloy welding high temperature welding. The firmness of the solder joint position is far inferior to that of the stainless steel integral forming technology, and has a greater relationship with the human operation method. In addition, one side of the welding spot positions on both sides of the existing deciduous space maintainer is easy to bear the occlusal pressure, and it is easy to be desoldered under force during the patient's occlusal process. The new deciduous tooth space maintainer designed by this patent can be designed and manufactured in batches, without the need for technicians to operate, without solder joints, and the turning and connecting positions are far away from the occlusal force-bearing parts, and the stability and durability are greatly enhanced. the

3. This patent can be used as a gap expander. Opens lost interdental spaces using NiTi springs as attachments. the

4. Compared with the existing deciduous teeth premature loss device, the device is more beautiful, compact and comfortable. the

Disadvantages: The chairside operation takes a little longer (the doctor needs to clamp and fix it in the patient's mouth). the

Description of drawings

Fig. 1 is a schematic diagram of the structure of the utility model in use;

Fig. 2 is a top view schematic diagram of Fig. 1;

Fig. 3 is a structural schematic diagram of a double-tube space maintainer for premature loss of deciduous teeth;

Fig. 4 is a schematic diagram of the structure of a single-tube space maintainer for premature loss of deciduous teeth.

Wherein belt ring-1, casing-2, support rod-3, support surface-4, tweezers titanium spring-5.

Detailed ways

Below in conjunction with embodiment and accompanying drawing, the utility model is further described. the

A multi-purpose space maintainer for premature loss of deciduous teeth is characterized in that: it includes a belt ring 1, a sleeve 2 arranged on the belt ring and a supporting arm matched with the sleeve 2; the sleeve 2 is hollow, Its one end is connected with the belt ring 1, and the other end is open; the support arm includes a support rod 3 and a support surface 4, and one end of the support rod 3 is inserted into the sleeve 2 through the open end of the sleeve 2, and the support rod 3 slides with the sleeve 2 Connection, the other end of the support rod 3 is connected to the support surface 4, and the support surface 4 is a concave surface matched with the shape of the teeth. the

The surface of one end of the support rod 3 inserted into the casing is rough or threaded. the

A tweezers titanium spring 5 may be arranged between the support rod 3 and the casing 2 . the

The material of the belt ring 1, the casing 2 and the support arm is stainless steel. the

When using, first select the appropriate size of the belt ring, then insert the support rod of the support arm into the sleeve on the belt ring and try it on the retained abutment together, adjust the length of the support arm to make it close to the other side abutment. Use orthodontic pliers to clamp the cannula, deform it and secure the struts. After the whole is removed, apply a cementing material, and bring it back in to make it bonded and fixed.

The connection mode between the support rod and the casing is sliding connection. The sleeve wall is relatively thin and can be deformed by extrusion, and the end of the support arm near the body of the holder is an indented rough surface, which can make the deformed sleeve wall embedded with it, so that the two are relatively fixed. The connecting part of the two parts can be placed with an accessory nickel-titanium spring to compress the spring, while the two parts can still slide relative to each other, thereby increasing the distance between them. When the doctor judges that the distance is enough, the above-mentioned fixing method can be used. After removing the nickel-titanium spring, fix it with clamps. According to the specific situation of the tooth arrangement in the mouth, you can choose a single-arm or double-arm deciduous space maintainer. the

The above-mentioned device for fixing the support arm can adopt special-purpose pliers, needle holders, technician pliers, etc., and the inner diameter of the special-purpose pliers used is slightly smaller than the sleeve outer diameter.

The retainer sleeve and the support arm are matched to each other, and can be designed as a single-tube or double-tube type, and the distal connection end of the retainer support arm is designed to fit the concave surface of the teeth. the

The utility model is mainly used for gap maintenance and gap expansion after single or continuous (no more than two) deciduous posterior teeth are missing. the

Claims (4)

1. A multi-purpose space maintainer for premature loss of deciduous teeth, characterized in that: it includes a belt ring (1), a sleeve (2) arranged on the belt ring and a supporting arm matched with the sleeve (2); The sleeve (2) is hollow, one end of which is connected to the belt ring (1), and the other end is open; the support arm includes a support rod (3) and a support surface (4), and one end of the support rod (3) passes through the sleeve The open end of (2) is inserted into the sleeve (2), the support rod (3) is slidingly connected with the sleeve (2), the other end of the support rod (3) is connected with the support surface (4), and the support surface (4) is A concave surface that matches the shape of the tooth. 2. The multi-purpose space maintainer for premature loss of deciduous teeth according to claim 1, characterized in that: the surface of the support rod (3) is rough or threaded. 3. The multi-purpose space maintainer for premature loss of deciduous teeth according to claim 1, characterized in that: a titanium tweezers spring (5) is arranged between the support rod (3) and the sleeve (2). 4. The multi-purpose space maintainer for premature loss of deciduous teeth according to claim 1, characterized in that: the material of the belt ring (1), sleeve (2) and support arm is stainless steel.