Tongue side retainer manufactured by metal powder SLM (Selective Laser Melting) additive manufacturing

Abstract

The utility model relates to the technical field of lingual retainers, in particular to a lingual retainer for metal powder SLM (selective laser melting) additive manufacturing, which comprises a plurality of metal sheet bodies playing a role in fixing and an arch wire playing a role in connecting, a supporting plate component is welded at the center of the rear side of each metal sheet body, each supporting plate component is provided with an arch wire hole, and belt rings are welded at two ends of each arch wire. The belt rings are arranged at the left end and the right end of the arch wire and fixed to the left second molar and the right second molar, the overall stability of the device is improved, the supporting plate assembly is arranged on the metal sheet bodies, the gap between the metal sheet bodies can be changed according to the actual situation of a user, and the overall treatment effect is ensured; meanwhile, the net-shaped protrusions are arranged on the outer surfaces of the grooves, the contact area of the metal sheet body and the outer surfaces of the teeth is increased, the bonding capacity of the metal sheet body is improved, and the tongue of a user is prevented from being damaged by arranging the bonding silica gel lantern ring on the supporting plate body in a sleeving mode.

Description

Technical Field

[0001] This utility model relates to the field of tongue retainer technology, specifically a tongue retainer manufactured by metal powder SLM additive manufacturing. Background Technology

[0002] With the development of modern orthodontic technology, more and more patients are choosing to use retainers to maintain their orthodontic results after teeth straightening. Traditional retainers, whether removable or fixed, have certain limitations, such as low comfort and high visibility. In recent years, with the advancement of 3D printing technology, especially the application of selective laser melting (SLM) technology, customized lingual retainers have gradually become a new trend. Lingual retainers made of metal powder using SLM technology have higher precision and durability, can better adapt to the patient's oral environment, and improve retention. In addition, this type of retainer can also provide better comfort and privacy, and ensure the stable position of teeth after orthodontic treatment.

[0003] The utility model with announcement number CN211884093U discloses a lingual retainer, which includes a body and a connecting rod. There are multiple bodies, and adjacent bodies are connected by the connecting rod. The body and the connecting rod are integrally formed. After multiple bodies are connected by the connecting rod, they are arranged in an arc shape. One side of the body is in close contact with the inner side of the teeth.

[0004] The above-mentioned technical solution, with the main body and connecting rod integrally molded, facilitates overall processing and simplifies the manufacturing process. It also improves the connection strength between the connecting rod and the main body, enhancing overall integrity and effectively maintaining the dental arch shape of the teeth after correction. However, the device has poor overall fixation and cannot provide continuous and stable orthodontic retention force. Furthermore, as it is an integrally molded structure, the spacing between the metal pieces cannot be adjusted in a timely manner according to the patient's actual situation. In addition, the metal pieces have weak adhesion and are prone to falling off. Moreover, the lack of a silicone protective device can easily damage the user's tongue. Utility Model Content

[0005] The purpose of this utility model is to provide a prefabricated cabin ventilation and heat dissipation device to solve the problem of the lingual retainer with authorization announcement number CN211884093U mentioned in the background art. However, the device has poor overall fixation and cannot provide continuous and stable orthodontic retention force. Moreover, it is a one-piece molded structure and cannot adjust the spacing between the metal pieces in a timely manner according to the actual situation of the patient. At the same time, the metal pieces have weak adhesion and are prone to falling off. Furthermore, it lacks a silicone protective device, which can easily damage the user's tongue.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A tongue-side retainer manufactured by metal powder SLM additive manufacturing includes several metal sheets for fixing and an archwire for connecting. A support plate assembly is welded to the rear center of the metal sheets. The support plate assembly has an archwire hole, and the two ends of the archwire are welded with band rings.

[0008] Preferably, the metal sheet has a groove facing the tooth, the shape of the groove is adapted to the lingual surface of the corresponding orthodontic tooth, and the surface of the groove has a mesh-like protrusion.

[0009] In this invention, by creating a groove that fits the lingual surface of the user's teeth, and by setting a mesh structure protrusion on the surface of the groove, the contact area between the metal sheet and the lingual surface of the teeth is increased, thereby increasing the bonding effect between the metal sheet and the teeth. At the same time, the metal sheet fits the lingual surface of the teeth, increasing the user's wearing comfort.

[0010] Preferably, the size of the metal sheet should be less than one-third the size of the tooth, and the shape of the metal sheet should mimic the shape of the tooth being fitted.

[0011] In this invention, the preferred size of the metal sheet should be one-quarter the size of a tooth. By setting the shape of the metal sheet to the shape of a tooth, material is saved while increasing the user's wearing comfort.

[0012] Preferably, the thickness of the metal sheet is 0.5 mm to 0.9 mm.

[0013] In this invention, the preferred thickness of the metal sheet is 0.6 mm. This thickness does not affect the bonding effect and increases the user's wearing comfort.

[0014] Preferably, the tray assembly includes a tray body, a silicone collar, and a sliding cover. A bow wire hole is provided at the contact point between the tray body and the sliding cover. A through hole is provided at the upper end of the sliding cover near the edge. A screw hole is provided at the corresponding position of the through hole and the tray body. A fixing screw is provided on the through hole. The fixing screw passes through the through hole and is threadedly connected to the screw hole.

[0015] In this invention, by opening archwire holes in the tray assembly, the tray assembly is fixed to the archwire, providing a continuous and stable orthodontic retention force for teeth straightening. By using fixing screws in conjunction with perforations and screw holes, the sliding cover is quickly fixed, facilitating the adjustment of the archwire inside the archwire holes.

[0016] Preferably, the silicone collar is fitted around the pallet body, and there are protrusions at the four corners above the silicone collar, and the silicone collar is bonded and fixed to the pallet body.

[0017] In this invention, a silicone collar is provided around the main body of the tray, and four protrusions on the top of the silicone collar surround the four corners of the sliding cover, preventing the user's tongue from directly contacting the main body of the tray and the corners of the sliding cover, thus avoiding injury to the user's tongue.

[0018] Preferably, the archwire length should be determined based on the length of the marginal ridge on the lingual side of the tooth combined with the interdental length.

[0019] In this invention, a three-dimensional model of the teeth is obtained through an intraoral scanner, and the required archwire length suitable for the user is calculated, which helps to provide the user with stable orthodontic retention force.

[0020] Preferably, the inner side of the band ring is tightly fitted to the outer surface of the second molar.

[0021] In this invention, the belt ring is manufactured by metal powder SLM additive manufacturing. The inner side of the belt ring is closely attached to the outer surface of the left and right second molars, increasing the contact area between the inner side of the belt ring and the outer surface of the second molars, increasing the adhesion between the belt ring and the second molars, and at the same time, by setting the belt ring, the overall stability of the device is increased.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. This utility model increases the overall stability of the device by setting loops at both ends of the archwire and fixing it to the left and right second molars. The tray assembly set on the metal plate can change the gap between the metal plates according to the actual situation of the user to ensure the overall treatment effect. By opening grooves on the metal plate and setting mesh protrusions on the outer surface of the grooves, the contact area between the metal plate and the outer surface of the teeth is increased, and the adhesion of the metal plate is improved. By putting an adhesive silicone collar on the tray body, damage to the user's tongue is avoided.

[0024] 2. This utility model, by preferably having a metal sheet size smaller than half the size of a tooth and a metal sheet thickness of 0.5mm to 0.9mm, improves the user's wearing comfort while ensuring the bonding effect. At the same time, the device is manufactured by metal powder SLM additive manufacturing, which increases the material utilization rate and reduces the machining process, saving time and costs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention in use.

[0026] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 3 This is a top view structural diagram of the present invention;

[0028] Figure 4 This is a schematic diagram of the metal sheet and tray assembly structure of this utility model;

[0029] Figure 5 This is an exploded view of the pallet assembly of this utility model.

[0030] The meanings of the labels in the diagram are as follows:

[0031] 1. Metal sheet; 10. Tray assembly; 100. Sliding cover; 1000. Archwire hole; 1001. Through hole; 1002. Fixing screw; 1003. Screw hole; 101. Tray body; 102. Silicone collar; 11. Groove;

[0032] 2. Archwire;

[0033] 3. With rings. Detailed Implementation

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Please see Figures 1-5 This embodiment provides a technical solution:

[0036] A lingual retainer manufactured by SLM additive manufacturing of metal powder includes several metal sheets 1 for fixation and archwires 2 for connection. The metal sheets 1 have grooves 11 on the tooth-facing side. The shape of the grooves 11 is adapted to the lingual surface of the corresponding orthodontic teeth. The surface of the grooves 11 has mesh-like protrusions.

[0037] In this invention, by creating a groove 11 that fits the lingual surface of the user's teeth, and by setting a mesh structure protrusion on the surface of the groove 11, the contact area between the metal sheet 1 and the lingual surface of the orthodontic teeth is increased, thereby increasing the bonding effect between the metal sheet 1 and the teeth. At the same time, the metal sheet 1 fits the lingual surface of the teeth, increasing the user's wearing comfort.

[0038] Furthermore, the size of the metal plate 1 should be less than one-third the size of the tooth, and the shape of the metal plate 1 should mimic the shape of the tooth being fitted.

[0039] In this invention, the preferred size of the metal sheet 1 should be one-quarter the size of a tooth. By setting the shape of the metal sheet 1 to the shape of a tooth, materials are saved while increasing the user's wearing comfort.

[0040] Specifically, the thickness of the metal sheet 1 is 0.5 mm to 0.9 mm.

[0041] In this invention, the preferred thickness of the metal sheet 1 is 0.6 mm. This thickness does not affect the bonding effect and increases the user's wearing comfort.

[0042] It should be noted that a tray assembly 10 is welded to the center of the rear side of the metal sheet 1. The tray assembly 10 includes a tray body 101, a silicone collar 102, and a sliding cover 100. A bow wire hole 1000 is provided at the contact point between the tray body 101 and the sliding cover 100. A through hole 1001 is provided at the upper end of the sliding cover 100 near the edge. A screw hole 1003 is provided at the corresponding position of the through hole 1001 and the tray body 101. A fixing screw 1002 is provided on the through hole 1001. The fixing screw 1002 passes through the through hole 1001 and is threadedly connected to the screw hole 1003.

[0043] In this invention, by opening an archwire hole 1000 on the tray assembly 10, the tray assembly 10 is fixed on the archwire 2, providing a continuous and stable orthodontic retention force for teeth straightening. By using a fixing screw 1002 in conjunction with a through hole 1001 and a screw hole 1003, the sliding cover 100 is quickly fixed, making it convenient to adjust the archwire 2 inside the archwire hole 1000.

[0044] Secondly, the silicone collar 102 is fitted around the tray body 101, and there are protrusions at the four corners above the silicone collar 102. The silicone collar 102 is bonded and fixed to the tray body 101.

[0045] In this utility model, by providing a silicone collar 102 around the tray body 101, and having four protrusions on the silicone collar 102 surrounding the four corners of the sliding cover 100, the user's tongue is prevented from directly contacting the tray body 101 and the corners of the sliding cover 100, thus avoiding injury to the user's tongue.

[0046] In detail, the tray assembly 10 is provided with archwire holes 1000, and the archwire 2 has rings 3 welded to both ends. The length of the archwire 2 should be determined according to the length of the marginal ridge on the lingual side of the tooth and the length of the interdental space.

[0047] In this invention, a three-dimensional model of the teeth is obtained by an intraoral scanner, and the required archwire length 2 suitable for the user is calculated, which helps to provide the user with stable orthodontic retention force.

[0048] Finally, it should be noted that the inner side of the band 3 fits tightly against the outer surface of the second molar.

[0049] In this invention, the belt ring 3 is manufactured by metal powder SLM additive manufacturing. The inner side of the belt ring 3 is closely attached to the outer surface of the left and right second molars, increasing the contact area between the inner side of the belt ring 3 and the outer surface of the second molars, increasing the adhesion between the belt ring 3 and the second molars. At the same time, by setting the belt ring 3, the overall stability of the device is increased.

[0050] In this embodiment, a lingual retainer manufactured by SLM additive manufacturing of metal powder is used. First, an intraoral scanner is used to obtain a three-dimensional model of the teeth, the shape of the metal sheet 1 and the band 3. Based on the scan data, the metal sheet 1, the tray assembly 10 and the band 3 are printed using SLM additive manufacturing technology. According to the three-dimensional model of the user's teeth, the length of the archwire 2 is set, and the band 3 is welded and fixed to both ends of the archwire 2.

[0051] When using a lingual retainer manufactured using SLM (Surface Mount Technology) with metal powder, first clean the teeth to be fitted. Place the band 3 on the outer surface of the user's left and right second molars. Then, attach the metal plate 1 to the inner surface of the teeth to be fixed and perform a trial fitting to check if the band 3 and metal plate 1 fit the teeth. Depending on the trial fitting, slight adjustments may be needed to ensure a proper fit without causing discomfort. Finally, apply adhesive to the outer surface of the left and right second molars and place the band 3 on the teeth. Adjust the position of the band 3, apply adhesive to the inside of the tooth to be fixed, and then attach the metal sheet 1 to the corresponding position. Adjust the position of the metal sheet 1 to ensure that the metal sheet 1 is in close contact with the tooth surface. Use a light curing lamp or other tools to harden the adhesive material. Insert the archwire 2 into the archwire hole 1000, move the sliding cover 100 downward, and thread the fixing screw 1002 through the through hole 1001 and screw hole 1003. Fix the sliding cover 100 and check whether the archwire 2 is installed securely, whether the archwire 2 is straight, and whether the user has any discomfort.

[0052] When the position of the user's teeth changes and the gap between the metal plates 1 needs to be changed, unscrew the fixing screw 1002 from the screw hole 1003, open the sliding cover 100 upwards, adjust the position of the archwire 2 in the archwire hole 1000, close the sliding cover 100 downwards, and thread the fixing screw 1002 through the through hole 1001 and screw it into the screw hole 1003.

Claims

1. A tongue-side retainer manufactured by SLM additive manufacturing of metal powder, comprising a plurality of metal sheets (1) for fixing and an archwire (2) for connecting, characterized in that: A tray assembly (10) is welded to the center of the rear side of the metal sheet (1). The tray assembly (10) is provided with a bow wire hole (1000). The bow wire (2) is welded with a band ring (3) at both ends.

2. The tongue-side retainer manufactured by SLM additive manufacturing of metal powder according to claim 1, characterized in that: The metal sheet (1) has a groove (11) facing the tooth side. The shape of the groove (11) is adapted to the lingual surface of the corresponding orthodontic tooth. The surface of the groove (11) is provided with a mesh structure protrusion.

3. The tongue-side retainer manufactured by SLM additive manufacturing of metal powder according to claim 1, characterized in that: The size of the metal sheet (1) should be less than one-third the size of the tooth, and the shape of the metal sheet (1) should resemble the shape of the tooth.

4. The tongue-side retainer manufactured by SLM additive manufacturing of metal powder according to claim 1, characterized in that: The thickness of the metal sheet (1) is 0.5 mm to 0.9 mm.

5. The tongue-side retainer manufactured by SLM additive manufacturing of metal powder according to claim 1, characterized in that: The pallet assembly (10) includes a pallet body (101), a silicone collar (102), and a sliding cover (100). A bow wire hole (1000) is provided at the contact point between the pallet body (101) and the sliding cover (100). A through hole (1001) is provided at the upper end of the sliding cover (100) near the edge. A screw hole (1003) is provided at the corresponding position of the through hole (1001) and the pallet body (101). A fixing screw (1002) is provided on the through hole (1001). The fixing screw (1002) passes through the through hole (1001) and is threadedly connected to the screw hole (1003).

6. The tongue-side retainer manufactured by SLM additive manufacturing of metal powder according to claim 5, characterized in that: The silicone collar (102) is fitted around the tray body (101), and there are protrusions at the four corners above the silicone collar (102). The silicone collar (102) is bonded and fixed to the tray body (101).

7. The tongue-side retainer manufactured by SLM additive manufacturing of metal powder according to claim 1, characterized in that: The length of the archwire (2) should be determined based on the length of the marginal ridge on the lingual side of the tooth and the length of the interdental space.

8. The tongue-side retainer manufactured by SLM additive manufacturing of metal powder according to claim 1, characterized in that: The inner side of the band (3) is tightly attached to the outer surface of the second molar.

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