Visual inertia-preventing dental fluorosis screening colorimetric plate structure

Abstract

The invention relates to a dental fluorosis screening colorimetric plate structure capable of preventing visual inertia, which comprises a shell, an observation port is formed in the upper end surface of the shell, and a plate turning mechanism is arranged at one end of the observation port; one side surface of the shell is fixedly connected with a grip; a rotating ring is rotatably connected to the lower end of the interior of the shell, a dismounting seat is slidably connected to the interior of the rotating ring, and a rotating handle is fixedly connected to the lower end face of the dismounting seat; a plurality of mounting grooves are formed in the upper end face of the dismounting base, magnets are fixedly connected to the interiors of the mounting grooves, iron blocks are connected to the upper ends of the magnets in an attraction mode, and tooth color codes are fixedly connected to the upper ends of the iron blocks. By means of the dental fluorosis screening device, a user can conveniently conduct dental fluorosis screening operation by himself / herself, one independent tooth color code can be exposed for independent color matching comparison through one-time operation, and the situation that visual inertia contrast color difference occurs due to the fact that a large number of tooth color codes are observed at a time is effectively eradicated.

Description

Technical Field

[0001] The present invention relates to the technical field of dental fluorosis screening, and in particular to a dental fluorosis screening colorimetric plate structure that prevents visual inertia. Background Art

[0002] The dental fluorosis screening shade guide is a professional tool used to screen and diagnose dental fluorosis (a typical oral manifestation of endemic fluorosis). It mainly determines whether dental fluorosis is present and the severity of the disease by comparing tooth color and the degree of lesions.

[0003] Currently, most of the common color charts on the market are long strips with 10-20 small tooth color scales of different thicknesses fixedly attached to the outer side in sequence. However, this type of color chart structure is not convenient for users to perform fluorosis screening on their own. In addition, the multiple color numbers of this type of color chart structure are on the same visual horizontal line. When users screen on their own, they need to observe a large number of color scales for a long time, which is very likely to cause visual inertia and contrast color difference due to visual fatigue. For this reason, we proposed a fluorosis screening color chart structure that prevents visual inertia. Summary of the Invention

[0004] The present invention provides a fluorosis screening shade plate structure for preventing visual inertia, which solves the technical problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A dental fluorosis screening colorimetric plate structure for preventing visual inertia, comprising a housing, an upper end surface of the housing being provided with an observation port, and one end of the observation port being provided with a flap mechanism; A handle is fixedly connected to one side of the housing; The lower end of the inner part of the shell is rotatably connected to a rotating ring, the inner part of the rotating ring is slidably connected to a disassembly seat, and the lower end surface of the disassembly seat is fixedly connected to a turning handle; The upper end surface of the disassembly seat is provided with a plurality of mounting grooves, the interior of the mounting grooves is fixedly connected with a magnet, the upper end of the magnet is attracted and connected with an iron block, and the upper end of the iron block is fixedly connected with a tooth color standard; An annular groove is formed on the inner wall of the housing, an annular rubber plate is rotatably connected to the inner wall of the annular groove, and the inner surface of the annular rubber plate is fixedly connected to the side surface of the rotating ring; The left and right sides of the disassembly seat are both provided with disassembly and assembly mechanisms.

[0006] A further improvement of the technical solution of the present invention is that the flip mechanism includes two fixed plates 1, two rotating blocks are arranged between the two fixed plates 1, and the upper ends of the rotating blocks are fixedly connected to the cover plate.

[0007] A further improvement of the technical solution of the present invention is that: opposite surfaces of the two rotating blocks are fixedly connected with rotating rods, and the rotating rods are rotatably connected to the through holes opened on the surface of the corresponding fixed plate; One end of the rotating rod is provided with a positioning assembly.

[0008] A further improvement of the technical solution of the present invention is that: a sealing gasket is fixedly connected to one side of the cover plate, a mirror fixedly connected to the cover plate is provided inside the sealing gasket, and lamp tubes fixedly connected to the cover plate are provided on both sides of the mirror.

[0009] A further improvement of the technical solution of the present invention is that the positioning assembly includes a positioning plate, one end of the positioning plate is fixedly connected to one end of the rotating rod, and a side surface of the positioning plate is provided with multiple arc-shaped grooves evenly distributed around the circumference.

[0010] A further improvement of the technical solution of the present invention is that: a fixing plate 2 fixedly connected to the shell is provided on one side of the positioning plate, a hollow plate is fixedly connected to one side of the fixing plate 2, a pressure plate is slidably connected to the inner wall of the hollow plate, a positioning rod is fixedly connected to one side of the pressure plate, which passes through the hollow plate and is slidably connected to the passing part, and one end of the positioning rod is arc-shaped and is slidably connected to the inside of the arc-shaped groove.

[0011] A further improvement of the technical solution of the present invention is that: a spring 1 is fixedly connected to the other side of the pressure plate, and one end of the spring 1 is fixedly connected to an inner end surface of the hollow plate.

[0012] A further improvement of the technical solution of the present invention is that: the disassembly and assembly mechanism includes a square frame, and the square frame is fixedly connected to the lower end surface of the rotating ring; An L-shaped plugging plate is slidably connected to the inner wall of the square frame, and one end of the L-shaped plugging plate is fixedly connected to the disassembly seat.

[0013] A further improvement of the technical solution of the present invention is that: a positioning socket is opened on the surface of the L-shaped plugboard, a movable plate is slidably connected to the inner wall of the square frame, and a positioning plugboard is fixedly connected to one side of the movable plate and plugged into the inner wall of the positioning socket; The other side of the movable plate is fixedly connected with a pull rod, which passes through the square frame and is slidably connected to the passing portion. One end of the pull rod is fixedly connected with a pull ring, and a spring 2 is sleeved on the surface of the pull rod.

[0014] A further improvement of the technical solution of the present invention is that: limiting grooves are provided on both inner side surfaces of the square frame, and the inner wall of the limiting groove is slidably connected to a limiting slider fixedly connected to the movable plate.

[0015] The beneficial effects of the present invention are as follows: the present invention provides a fluorosis screening colorimetric plate structure that prevents visual inertia, which has the following advantages: 1. The present invention rotates the disassembly seat by turning the handle, so that the tooth color standards at the observation port are displayed alternately and individually, so that a single tooth color standard can be exposed for individual color matching and comparison in one operation, effectively eliminating the visual inertial contrast color difference caused by observing a large number of tooth color standards at one time. The mirror in the flip mechanism allows users to perform fluorosis screening by themselves. The positioning component in the flip mechanism allows the use angle of the mirror to be limited and adjusted, and the light in the flip mechanism can provide an illumination effect. 2. The present invention facilitates the subsequent removal of the disassembly seat through the disassembly and assembly mechanism, so that the multiple tooth color standards on the upper end of the disassembly seat can be maintained and processed, and the tooth color standards can be easily removed and replaced separately under the action of the iron block and the magnet.

[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the following preferred embodiments of the present invention are described in detail with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail by the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 A schematic structural diagram of a fluorosis screening shade guide structure for preventing visual inertia provided by one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of another perspective of a fluorosis screening shade guide structure for preventing visual inertia is provided; Figure 3 for Figure 2 A schematic diagram showing an enlarged structure of position A in a fluorosis screening shade guide for preventing visual inertia; Figure 4 for Figure 3 Schematic diagram of the structural decomposition of the disassembly and assembly components of a fluorosis screening shade guide structure that prevents visual inertia Figure 5 for Figure 1 A schematic diagram of the structural decomposition of a flap mechanism in a fluorosis screening shade guide structure that prevents visual inertia is provided; Figure 6 for Figure 5A schematic diagram of the local structural decomposition of a fluorosis screening shade guide structure to prevent visual inertia is provided; Figure 7 for Figure 1 A schematic diagram of the local structural decomposition of a fluorosis screening shade guide structure that prevents visual inertia is provided.

[0018] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Shell; 2. Observation port; 3. Flip mechanism; 31. Cover; 32. Sealing gasket; 33. Lamp tube; 34. Mirror; 35. Rotating block; 36. Rotating rod; 37. Fixed plate 1; 38. Positioning assembly; 381. Positioning disk; 382. Arc groove; 383. Positioning rod; 384. Hollow plate; 385. Fixed plate 2; 386. Pressing plate; 387. Spring 1; 4. Handle; 5. Disassembly seat; 51. Turning handle; 52. Mounting groove; 6. Disassembly and assembly mechanism; 61. Square frame; 62. Limiting groove; 63. L-shaped plug-in plate; 64. Positioning socket; 65. Positioning plug-in plate; 66. Moving plate; 67. Limiting slider; 68. Spring 2; 69. Pull rod; 610. Pull ring; 7. Rotating ring; 71. Annular rubber plate; 8. Tooth color mark; 9. Iron block; 10. Magnet; 11. Annular groove. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-7 The principles and features of the present invention are described, and the examples given are only for the purpose of explaining the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are in a very simplified form and are not in exact proportions, and are only used for the purpose of conveniently and clearly assisting in illustrating the embodiments of the present invention.

[0020] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] like Figure 1-7 As shown, the present invention provides a fluorosis screening colorimetric plate structure for preventing visual inertia, comprising a shell 1, an observation port 2 being provided on the upper end face of the shell 1, and a flip mechanism 3 being provided at one end of the observation port 2; a handle 4 being fixedly connected to one side face of the shell 1; a rotating ring 7 being rotatably connected to the inner lower end of the shell 1, a disassembly seat 5 being slidably connected to the inner part of the rotating ring 7, and a turning handle 51 being fixedly connected to the lower end face of the disassembly seat 5; a plurality of mounting grooves 52 being provided on the upper end face of the disassembly seat 5, a magnet 10 being fixedly connected to the inner part of the mounting groove 52, an iron block 9 being attracted and connected to the upper end of the magnet 10, and a tooth color standard 8 being fixedly connected to the upper end of the iron block 9; an annular groove 11 being provided on the inner wall of the shell 1, an annular rubber plate 71 being rotatably connected to the inner wall of the annular groove 11, and the inner surface of the annular rubber plate 71 being fixedly connected to the side face of the rotating ring 7; and a disassembly mechanism 6 being provided on both the left and right sides of the disassembly seat 5.

[0023] Specifically, the present invention allows a single tooth color standard 8 to be exposed through the observation port 2 for individual color matching and comparison, effectively eliminating the visual inertial color difference caused by observing a large number of tooth color standards 8 at once. To facilitate the user's independent fluorosis screening operation, the handle 4 allows the user to hold it with one hand, and the turning handle 51 allows the user to rotate the disassembly seat 5 with the other hand, so that the tooth color standard 8 on the upper end of the disassembly seat 5 can be alternately displayed and processed at the observation port 2. The flip mechanism 3 allows the user to observe their own teeth and compare them with the tooth color standard 8 at the observation port 2 for screening. To allow the disassembly seat 5 to rotate within the housing 1, the annular groove 11 cooperates with the annular rubber plate 71 to allow the rotating ring 7 to rotate within the housing 1, thereby allowing the disassembly seat 5 to rotate within the housing 1. To facilitate subsequent maintenance of the tooth color standard 8, the disassembly seat 5 can be disassembled through the disassembly mechanism 6, so that the tooth color standard 8 can be maintained. In order to facilitate the individual disassembly and replacement of the damaged or color-difference tooth color standard 8 , the tooth color standard 8 can be individually disassembled and replaced under the action of the iron block 9 and the magnet 10 .

[0024] In this embodiment, the flip mechanism 3 includes two fixed plates 37, two rotating blocks 35 are arranged between the two fixed plates 37, the upper ends of the rotating blocks 35 are fixedly connected to the cover plate 31, and the opposite sides of the two rotating blocks 35 are fixedly connected to rotating rods 36, and the rotating rods 36 are rotatably connected to the through holes opened on the surfaces of the corresponding fixed plates 37; a positioning assembly 38 is provided at one end of the rotating rod 36, and a sealing gasket 32 is fixedly connected to one side of the cover plate 31, and a mirror 34 fixedly connected to the cover plate 31 is provided inside the sealing gasket 32, and lamp tubes 33 fixedly connected to the cover plate 31 are provided on both sides of the mirror 34.

[0025] Specifically, to facilitate the user's observation of their teeth, a mirror 34 is provided to facilitate comparison of their teeth with the tooth color standard 8 at the observation port 2, thereby performing a fluorosis screening procedure. To facilitate the user's adjustment of the mirror 34's operating angle, a rotating block 35, a rotating rod 36, and a positioning assembly 38 cooperate to adjust the mirror 34's operating angle to a desired angle. To enhance the brightness around the mirror 34 and facilitate its use, a light tube 33 provides illumination, thereby enhancing the brightness around the mirror 34 and making it easier for the user to use the mirror 34. To seal the observation port 2, a sealing gasket 32 is provided. A battery compartment is also provided on the back of the cover 31, housing batteries to power the light tube 33. A control button is also provided on the front side of the cover 31 to turn the light tube 33 on and off.

[0026] In this embodiment, the positioning assembly 38 includes a positioning plate 381, one end of the positioning plate 381 is fixedly connected to one end of the rotating rod 36, and a plurality of arc-shaped grooves 382 are evenly distributed on the side of the positioning plate 381. A fixing plate 2 385 fixedly connected to the shell 1 is provided on one side of the positioning plate 381, and a hollow plate 384 is fixedly connected to one side of the fixing plate 2 385. A pressure plate 386 is slidably connected to the inner wall of the hollow plate 384, and a positioning rod 383 is fixedly connected to one side of the pressure plate 386, which passes through the hollow plate 384 and is slidably connected to the passing part. One end of the positioning rod 383 is arc-shaped and is slidably connected to the inside of the arc-shaped groove 382. The other side of the pressure plate 386 is fixedly connected to a spring 1 387, and one end of the spring 1 387 is fixedly connected to an inner end face of the hollow plate 384.

[0027] Specifically, when the cover 31 rotates and drives the positioning plate 381 to rotate, one end of the arc-shaped surface of the positioning rod 383 forms a sliding fit with the arc-shaped inner surface of the arc-shaped groove 382 opened on the side of the positioning plate 381 with its arc-shaped outer surface, and the positioning rod 383 can be squeezed into the inside of the hollow plate 384 under the action of the pressure plate 386, the spring 1 387 and the hollow plate 384. When the positioning plate 381 stops rotating, one end of the arc-shaped surface of the positioning rod 383 will slide into an arc-shaped groove 382 on the side of the positioning plate 381 under the action of the spring 1 387, thereby limiting the positioning plate 381, thereby limiting the cover 31, and completing the limit adjustment process of the cover 31 use angle.

[0028] In this embodiment, the disassembly and assembly mechanism 6 includes a square frame 61, which is fixedly connected to the lower end face of the rotating ring 7; the inner wall of the square frame 61 is slidably connected with an L-shaped plug plate 63, one end of the L-shaped plug plate 63 is fixedly connected to the disassembly seat 5, and a positioning socket 64 is provided on the surface of the L-shaped plug plate 63, and the inner wall of the square frame 61 is slidably connected with a movable plate 66, and one side of the movable plate 66 is fixedly connected with a positioning plug plate 65 which is plugged into the inner wall of the positioning socket 64; the other side of the movable plate 66 is fixedly connected with a pull rod 69, which passes through the square frame 61 and is slidably connected to the passing part, one end of the pull rod 69 is fixedly connected with a pull ring 610, and a spring 2 68 is provided on the surface of the pull rod 69, and limiting grooves 62 are provided on both inner side surfaces of the square frame 61, and the inner wall of the limiting groove 62 is slidably connected with a limiting slider 67 fixedly connected to the movable plate 66.

[0029] Specifically, in order to facilitate the subsequent disassembly of the disassembly seat 5, the pull rod 69 is pulled by the pull ring 610 so that the pull rod 69 drives the movable plate 66 to move, so that the movable plate 66 drives the positioning plug plate 65 to separate from the positioning socket 64 on the surface of the L-shaped plug plate 63, thereby releasing the limit of the L-shaped plug plate 63 and allowing the L-shaped plug plate 63 to be disassembled from the inside of the square frame 61, thereby completing the disassembly of the disassembly seat 5 and facilitating the maintenance of the tooth color standard 8; When it is necessary to install the disassembled disassembly seat 5, the pull ring 610 is pulled to make the pull rod 69 drive the movable plate 66 and the positioning plug plate 65 to move, and the L-shaped plug plates 63 on both sides of the disassembly seat 5 are respectively inserted into the corresponding square frames 61 to align the positioning sockets 64 with the positioning plug plates 65. Then, the pull ring 610 is released, and the positioning plug plates 65 are inserted into the positioning sockets 64 under the action of the restoring force of the pull rod 68, thereby completing the installation of the disassembly seat 5. In order to make the movable plate 66 move within the square frame 61, the movable plate 66 can be moved within the square frame 61 through the cooperation of the limiting groove 62 and the limiting slider 67, thereby improving the stability of the movable plate 66 when moving.

[0030] The specific working principle and method of use of the present invention are as follows: The present invention provides a colorimetric plate structure for screening dental fluorosis to prevent visual inertia. Figure 1-7 As shown, during use, the user rotates the cover plate 31 by cooperating with the rotating block 35 and the rotating rod 36, so that the use angle of the mirror 34 can be adjusted according to the user's needs. Under the action of the pressing plate 386, the spring 1 387 and the hollow plate 384, when the positioning plate 381 stops rotating, one end of the arcuate surface of the positioning rod 383 will slide into an arcuate groove 382 on the side of the positioning plate 381 under the action of the spring 1 387, thereby limiting the positioning plate 381 and thus limiting the cover plate 31, completing the limit adjustment process of the use angle of the mirror 34; When performing fluorosis screening, the user holds the handle 4 with one hand and rotates the disassembly seat 5 with the other hand, so that the disassembly seat 5 is limitedly rotated inside the shell 1 under the action of the rotating ring 7, the annular rubber plate 71 and the annular groove 11, so that the tooth color standard 8 on the upper end of the disassembly seat 5 is alternately displayed separately at the observation port 2. The user uses the mirror 34 to observe his own teeth and compares them with the tooth color standard 8 at the observation port 2 to perform fluorosis screening. In this way, a single tooth color standard 8 can be exposed for a single color comparison in one operation, effectively eliminating the visual inertia contrast color difference caused by observing a large number of tooth color standards 8 at one time.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A colorimetric plate structure for screening dental fluorosis to prevent visual inertia, comprising a housing (1), characterized in that: An observation port (2) is provided on the upper end surface of the shell (1), and a flap mechanism (3) is provided at one end of the observation port (2); A handle (4) is fixedly connected to one side of the housing (1); The lower end of the interior of the housing (1) is rotatably connected to a rotating ring (7), the interior of the rotating ring (7) is slidably connected to a disassembly seat (5), and the lower end surface of the disassembly seat (5) is fixedly connected to a turning handle (51); The upper end surface of the disassembly seat (5) is provided with a plurality of mounting grooves (52), the interior of the mounting grooves (52) is fixedly connected with a magnet (10), the upper end of the magnet (10) is attracted and connected with an iron block (9), and the upper end of the iron block (9) is fixedly connected with a tooth color mark (8); An annular groove (11) is formed on the inner wall of the housing (1), an annular rubber plate (71) is rotatably connected to the inner wall of the annular groove (11), and the inner surface of the annular rubber plate (71) is fixedly connected to the side surface of the rotating ring (7); Both left and right sides of the disassembly seat (5) are provided with disassembly and assembly mechanisms (6).

2. The colorimetric plate structure for screening dental fluorosis to prevent visual inertia according to claim 1, characterized in that: The flap mechanism (3) comprises two fixed plates (37), two rotating blocks (35) are provided between the two fixed plates (37), and the upper ends of the rotating blocks (35) are fixedly connected to the cover plate (31).

3. The colorimetric plate structure for screening dental fluorosis to prevent visual inertia according to claim 2, characterized in that: The opposite surfaces of the two rotating blocks (35) are fixedly connected with rotating rods (36), and the rotating rods (36) are rotatably connected to the inner through holes opened on the surface of the corresponding fixed plate (37); A positioning assembly (38) is provided at one end of the rotating rod (36).

4. The colorimetric plate structure for screening dental fluorosis to prevent visual inertia according to claim 2, characterized in that: A sealing gasket (32) is fixedly connected to one side of the cover plate (31), a mirror (34) fixedly connected to the cover plate (31) is provided inside the sealing gasket (32), and lamp tubes (33) fixedly connected to the cover plate (31) are provided on both sides of the mirror (34).

5. The color chart structure for screening dental fluorosis to prevent visual inertia according to claim 3, characterized in that: The positioning assembly (38) includes a positioning plate (381), one end of which is fixedly connected to one end of the rotating rod (36), and a side surface of the positioning plate (381) is provided with a plurality of arc-shaped grooves (382) evenly distributed around the circumference.

6. The colorimetric plate structure for screening dental fluorosis to prevent visual inertia according to claim 5, characterized in that: One side of the positioning plate (381) is provided with a second fixing plate (385) fixedly connected to the shell (1), one side of the second fixing plate (385) is fixedly connected to a hollow plate (384), the inner wall of the hollow plate (384) is slidably connected to a pressure plate (386), one side of the pressure plate (386) is fixedly connected to a positioning rod (383) that passes through the hollow plate (384) and is slidably connected to the passing portion, one end of the positioning rod (383) is arc-shaped and is slidably connected to the inside of the arc-shaped groove (382).

7. The color guide structure for screening dental fluorosis to prevent visual inertia according to claim 6, characterized in that: The other side of the pressure plate (386) is fixedly connected to a spring 1 (387), and one end of the spring 1 (387) is fixedly connected to an inner end surface of the hollow plate (384).

8. The color chart structure for screening dental fluorosis to prevent visual inertia according to claim 1, characterized in that: The disassembly and assembly mechanism (6) comprises a square frame (61), and the square frame (61) is fixedly connected to the lower end surface of the rotating ring (7); An L-shaped inserting plate (63) is slidably connected to the inner wall of the square frame (61), and one end of the L-shaped inserting plate (63) is fixedly connected to the disassembly seat (5).

9. The colorimetric plate structure for screening dental fluorosis to prevent visual inertia according to claim 8, characterized in that: A positioning socket (64) is provided on the surface of the L-shaped plug plate (63); a movable plate (66) is slidably connected to the inner wall of the square frame (61); and a positioning plug plate (65) is fixedly connected to one side of the movable plate (66) and plugged into the inner wall of the positioning socket (64); The other side of the movable plate (66) is fixedly connected to a pull rod (69), the pull rod (69) passes through the square frame (61) and is slidably connected to the passing portion, one end of the pull rod (69) is fixedly connected to a pull ring (610), and a spring 2 (68) is sleeved on the surface of the pull rod (69).

10. The color guide structure for screening dental fluorosis to prevent visual inertia according to claim 9, characterized in that: Limiting grooves (62) are provided on both inner side surfaces of the square frame (61), and the inner wall of the limiting groove (62) is slidably connected to a limiting sliding block (67) fixedly connected to the movable plate (66).

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