A universal rubber dam device for milk teeth

By designing pre-drilled holes and fasteners for fixation, the rubber dam device for treating pediatric caries has been simplified, solving the problem of cumbersome drilling on the proximal surfaces of children's molars, and improving treatment efficiency and children's cooperation.

CN224403790UActive Publication Date: 2026-06-26SHANDONG UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG UNIV
Filing Date
2025-06-18
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

When treating dental caries in children, the conventional rubber dam device involves cumbersome drilling on the adjacent surfaces of the child's molars, resulting in excessive preparation time and increasing the difficulty due to the child's lack of cooperation.

Method used

A universal rubber dam device for primary molars is designed with pre-set holes that conform to the shape of two adjacent molars. It is fixed with fasteners, simplifying the drilling and installation process, increasing the seal, and incorporating a mouth support to support the oral cavity and reduce discomfort for children when opening their mouths.

Benefits of technology

It shortens the preparation time before treatment, improves treatment efficiency, reduces the chance of children being uncooperative, and enhances the ease of operation for doctors and the treatment experience for children.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a general rubber dam device for milk molars, which comprises a dam cloth, wherein the dam cloth is provided with preset holes, the positions of the preset holes are arranged according to tooth positions, and the shapes of the preset holes are arranged according to the shapes of two adjacent molars; and fasteners are arranged at the preset holes, wherein the fasteners comprise fixing lines which are fixed to the dam cloth through the gaps between the two molars.
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Description

Technical Field

[0001] This application belongs to the field of dental medical devices, specifically relating to a universal rubber dam device for deciduous molars. Background Technology

[0002] Rubber dams are commonly used isolation tools in dental treatment, often used in dental treatments such as caries and root canal treatment. They are used to isolate the affected tooth from other teeth to prevent other teeth from affecting the procedure. They also isolate the affected tooth from the oral cavity to prevent residual tooth debris, water stains, and blood stains from entering the oral cavity during treatment. A typical rubber dam device includes a dam cloth, a face bow, and a fixing clip. The dam cloth is first punched with holes corresponding to the position of the affected tooth using a pre-made punching indicator card with the tooth position. After punching the holes, the dam cloth is fitted onto the affected tooth. The fixing clip is then installed to fix the dam cloth and the tooth. Finally, the face bow is installed at the edge of the dam cloth to complete the isolation.

[0003] Tooth decay in children often occurs on the proximal surfaces of molars. Currently, the conventional rubber dam used to treat tooth decay in children is the aforementioned rubber dam. However, due to the location of the affected tooth, drilling one hole is not effective in treating the tooth decay. Usually, two holes are needed to isolate both molars. However, the process of drilling and fixing the dam is cumbersome. Therefore, the preparation time for treating tooth decay in children using conventional dam is extremely long. Since children have low tolerance, the excessive preparation time will exacerbate their lack of cooperation in treatment and increase the difficulty of treatment. Utility Model Content

[0004] To solve the above problems, this utility model proposes a universal rubber dam device for deciduous molars, including a dam cloth with preset holes. The position of the preset holes corresponds to the position of the teeth, and the shape of the preset holes corresponds to the shape of two adjacent molars.

[0005] A fastener is provided at the preset hole. The fastener includes a fixing line that passes through the gap between the two molars and is fixed to the barrier cloth.

[0006] Pre-drilling saves drilling time, and fasteners are used instead of clamps to secure the diaphragm, saving time on clamp installation and significantly shortening preparation time. This makes the treatment process faster and avoids the problem of children losing patience due to excessively long treatment times.

[0007] The preset holes achieve full coverage of the four molar regions by reversing and rotating the barrier cloth, thus solving the problem of matching the position of the preset holes with the affected teeth during use.

[0008] Furthermore, the pre-set hole is gourd-shaped. Because the posterior teeth are larger than the anterior teeth, the pre-set hole is larger at the back and smaller at the front, with a convex edge in the middle corresponding to the position of the interdental space.

[0009] Furthermore, the fastener also includes a spring clamp, which is set around the edge of the preset hole and connected to the spring clamp at the gap between the fixing line and the molar.

[0010] The elastic band is used to reduce the area of ​​the preset hole so that the edge of the preset hole fits tightly against the gum. The diaphragm itself is elastic. Because there is disease on the proximal surface of the affected tooth, there is often a large interdental space. The fixation of the fixing line further pulls the diaphragm to wrap the interdental space of the molar, increasing the seal between the affected tooth and the oral cavity.

[0011] Furthermore, a fixing block is connected to one end of the fixing line, and a fixing ring is provided on the barrier cloth, with the fixing block and fixing ring connected together.

[0012] The fixing block is spherical, and its maximum diameter is slightly larger than that of the fixing ring. Because the fixing ring is elastic, the operator applies force to pass the fixing block through the fixing ring during fixing. After the fixing block passes through the fixing ring, the fixing ring retracts and locks the fixing block in place. The rear end of the fixing block and the fixing ring abut against each other to achieve fixation.

[0013] The fixing ring is a rubber strip fixed to the diaphragm at both ends, with the rubber strip and the diaphragm surface forming an annular hole. This hole is used to block the horizontally placed fixing block after it passes through. The fixing ring is placed near the affected tooth and can be matched with the fixing block. Fixing rings are provided on both sides of the diaphragm so that when the diaphragm is reversed to match the affected tooth, the fixing rings can fix the fixing line. The rubber strip on the non-applicable side fits into the diaphragm surface with minimal space and will not cause any negative experience for the patient.

[0014] Furthermore, the edge of the barrier is connected to a face bow, the shape of which is adapted to the outer edge of the barrier, and the area of ​​the face bow is larger than the area of ​​the oral cavity.

[0015] The face bow can be detached and connected to the barrier, or it can be integrated with the barrier.

[0016] The facebow is square-shaped and is used to connect and support the dam. When the facebow and the dam are detachably connected, the facebow has multiple protruding rods on its outer side. The edge of the dam is stretched and hung on the protruding rods. Due to the elasticity, the dam is fixed. Multiple protruding rods work together to fix the dam, so that the dam is in a stretched state to facilitate operation on the affected tooth.

[0017] Furthermore, the face bow is provided with an entrance portion that extends perpendicularly into the mouth from the barrier cloth, and a mouth support is connected to one end of the entrance portion inside the mouth.

[0018] Mouth openers can support teeth, save patients' energy when the mouth is kept open for a long time, and prevent children from experiencing increased negative emotions due to discomfort from opening their mouths.

[0019] The mouth opener of the facebow only needs to be set on one side. The mouth opener is placed on the opposite side of the affected tooth. That is, if the affected tooth is on the right side, the mouth opener is used on the left side.

[0020] Furthermore, the mouth opener includes a main body with occlusal grooves on both sides, which abut against the upper and lower molars respectively, and the distance between the two occlusal grooves gradually increases with the direction of the mouth.

[0021] Based on the main body's usage state, its longitudinal section is trapezoidal or triangular in shape to better fit the natural angle of the mouth opening and closing.

[0022] Furthermore, the inlet includes a bent rod, one end of which is connected to the face arch, the middle of which is bent to enter the oral cavity, and the other end of which is connected to a mouth splinter.

[0023] Alternatively, the inlet section includes two connecting rods, which are respectively connected to an upper occlusal member and a lower occlusal member. The upper occlusal member is set to conform to the direction of the upper teeth, and the lower occlusal member is set to conform to the direction of the lower teeth. The upper occlusal member and the lower occlusal member are respectively provided with occlusal grooves, which fit with the upper and lower teeth.

[0024] Furthermore, an isolation sleeve is provided on the outer surface of the entrance. The isolation sleeve can reduce friction between the mouth and the entrance and maintain the hygiene of the entrance. After use, discarding the isolation sleeve is more conducive to subsequent disinfection and sterilization.

[0025] When the facebow and barrier are connected as a single unit, no entrance or support is provided. The fasteners are directly fixed to the affected tooth, and the facebow is supported by the patient's cheek. This setup further shortens the preparation time before treatment. However, since the patient's mouth is kept open for a long time, it increases the effort required by the patient, and the longer treatment time will reduce the patient's experience.

[0026] Furthermore, a drainage strip is provided near the preset hole of the barrier cloth, and the drainage strip extends from the preset hole towards the center of the barrier cloth; the device for grinding teeth during the grinding process is equipped with both a flushing port and a suction port. Most of the water and impurities are sucked away by the suction port, and the remaining water stains flow into the barrier cloth away from the affected tooth through the drainage strip, so as to avoid affecting the affected tooth.

[0027] Furthermore, both sides of the barrier are matte. The smooth side reflects light during teeth grinding, which can affect vision, while the matte side avoids this effect.

[0028] Furthermore, the barrier can be decorated with cartoon patterns to attract children's interest and increase their cooperation.

[0029] The beneficial effects of this utility model are as follows:

[0030] (1) This utility model saves drilling time and shortens fixing time, greatly reduces the preparation time before treatment, improves treatment efficiency, reduces the chance of children not cooperating in the later stage of treatment, and reduces the difficulty of treatment.

[0031] (2) The fastener of this utility model has a simple fixing method, is easy to operate, reduces the usage requirements, and improves the convenience of doctors to use.

[0032] (3) The present invention is equipped with a mouth support device, which can help children support the opening and closing of their mouths, so that children do not need to keep opening their mouths on their own during the treatment process, thereby improving the children's experience during treatment and having a certain calming effect. Attached Figure Description

[0033] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0034] Figure 1 This is a side perspective view of an embodiment of the present utility model;

[0035] Figure 2 This is a schematic diagram showing the usage state of an embodiment of this utility model;

[0036] Figure 3 This is a schematic diagram of the face bow structure according to an embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram of another embodiment of the face bow structure of this utility model;

[0038] Figure 5 This is an enlarged view of section A of the present invention.

[0039] In the attached drawings: 1-barrier cloth, 11-preset hole, 2-face bow, 21-protruding rod, 22-entry part, 23-mouth support, 231-biting groove, 24-upper biting part, 25-lower biting part, 3-fastener, 31-fixing line, 32-fixing block, 33-fixing ring, 34-elastic hoop. Detailed Implementation

[0040] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0041] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0042] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0043] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0045] like Figure 1-5 As shown, a universal rubber dam device for deciduous molars includes a dam cloth 1 with a preset hole 11. The position of the preset hole 11 corresponds to the position of the tooth, and the shape of the preset hole 11 corresponds to the shape of two adjacent molars.

[0046] A fastener 3 is provided at the preset hole 11. The fastener 3 includes a fixing line 31, which passes through the gap between the two molars and is fixed to the barrier cloth 1.

[0047] By pre-drilling holes, drilling time is saved. Fastener 3 is used instead of the traditional fixing clip to fix the barrier cloth 1, saving the time of installing the fastener and greatly shortening the preparation time in the early stage, making the treatment process faster and avoiding the problem of children losing patience due to excessive treatment time.

[0048] The preset hole 11 can fully cover the four areas of the molar by reversing and rotating the barrier cloth 1, thus solving the problem of matching the position of the preset hole 11 with the affected tooth when it is used.

[0049] Furthermore, the pre-set hole 11 is gourd-shaped. Because the posterior teeth are larger than the anterior teeth, the pre-set hole 11 is larger at the back and smaller at the front, with a convex edge in the middle corresponding to the position of the interdental space.

[0050] In one embodiment, the fastener 3 further includes an elastic band 34, which is arranged around the edge of the preset hole 11, and the fixing line 31 is connected to the elastic band 34 at the gap of the molar.

[0051] The elastic band 34 is used to reduce the area of ​​the preset hole 11 so that the edge of the preset hole 11 is close to the gum. The barrier cloth 1 itself is also elastic. The fixing line 31 further pulls the barrier cloth 1 to wrap the molar interdental space, increasing the seal between the affected tooth and the oral cavity.

[0052] In one embodiment, one end of the fixing line 31 is connected to a fixing block 32, and a fixing ring 33 is provided on the barrier cloth 1. The fixing block 32 passes through the gap between the molars and is connected to the fixing ring 33.

[0053] The fixing block 32 is spherical, and the maximum diameter of the fixing block 32 is slightly larger than the diameter of the fixing ring 33. Since the fixing ring 33 is elastic, when fixing, the operator applies force to make the fixing block 32 pass through the fixing ring 33. After the fixing block 32 passes through the fixing ring 33, the fixing ring 33 retracts and locks the fixing block 32. The rear end of the fixing block 32 and the fixing ring 33 abut against each other to achieve fixation.

[0054] The fixing ring 33 is a rubber strip fixed to the diaphragm 1 at both ends, which is set on the surface of the diaphragm 1. The rubber strip and the surface of the diaphragm 1 form an annular hole, which is used to block the horizontally placed fixing block 32 after it is passed through. The fixing ring 33 is set near the affected tooth and can cooperate with the fixing block 32. The diaphragm 1 has fixing rings 33 on both sides so that when the diaphragm 1 is reversed to cooperate with the affected tooth, the fixing rings 33 can fix the fixing line 31. The rubber strip on the non-applicable side is in close contact with the surface of the diaphragm 1, and occupies very little space and will not have a negative experience for the patient.

[0055] In one embodiment, the edge of the barrier 1 is detachably connected to a face bow 2, the shape of which is adapted to the outer edge of the barrier 1, and the area of ​​the face bow 2 is larger than the area of ​​the oral cavity.

[0056] The facebow 2 is square-shaped and is used to connect and support the dam 1. The facebow 2 has multiple protruding rods 21 on its outer side. After the edge of the dam 1 is stretched, it is hung on the protruding rods 21. Due to the elasticity, the dam 1 is fixed. The multiple protruding rods 21 work together to fix the dam 1, so that the dam 1 is in a stretched state to facilitate operation on the affected tooth.

[0057] In one embodiment, the face bow 2 is provided with an inlet 22, which extends perpendicularly to the barrier 1 into the mouth, and a mouth support 23 is connected to one end of the inlet 22 inside the mouth.

[0058] The mouth opener 23 can support the teeth, saving the patient's energy when the mouth is kept open for a long time, and avoiding the negative emotions aggravated by the discomfort of opening the mouth in children.

[0059] In one embodiment, such as Figure 3 As shown, the mouth opener 23 includes a main body, and occlusal grooves 231 are provided on both sides of the main body. The occlusal grooves 231 respectively abut against the upper and lower molars, and the distance between the two occlusal grooves 231 gradually increases with the direction of the oral cavity.

[0060] Based on the main body's usage state, its longitudinal section is trapezoidal or triangular in shape to better fit the natural angle of the mouth opening and closing.

[0061] Furthermore, the entrance portion 22 includes a bent rod, one end of which is connected to the face bow 2, the middle of which is bent to enter the oral cavity, and the other end of which is connected to the mouth splinter 23.

[0062] In another embodiment, such as Figure 4 As shown, the entrance portion 22 includes two connecting rods, which are respectively connected to an upper occlusal member 24 and a lower occlusal member 25. The upper occlusal member 24 is set to conform to the direction of the upper teeth, and the lower occlusal member 25 is set to conform to the direction of the lower teeth. The upper occlusal member 24 and the lower occlusal member 25 are respectively provided with occlusal grooves 231, which fit with the upper and lower incisors.

[0063] In one embodiment, an isolation sleeve is provided on the outer surface of the entrance 22. The isolation sleeve can reduce the friction between the oral cavity and the entrance 22 and maintain the hygiene of the entrance 22. After use, discarding the isolation sleeve is more conducive to subsequent disinfection and sterilization.

[0064] In one embodiment, a drainage strip is provided at a position near the preset hole 11 on the barrier 1, and the drainage strip extends from the preset hole 11 toward the center of the barrier 1; the device for grinding teeth during the grinding process is provided with both a flushing port and a suction port. Most of the water and impurities are sucked away by the suction port, and the remaining water stains flow into the barrier 1 away from the affected tooth through the drainage strip, so as to avoid affecting the affected tooth.

[0065] In one embodiment, both sides of the barrier 1 are matte surfaces. The smooth surface reflects light during the teeth grinding process, which can affect the line of sight, while the matte surface can avoid the impact on the line of sight.

[0066] In one embodiment, the barrier 1 may have cartoon patterns to attract children's interest and increase their cooperation.

[0067] Taking the affected tooth in the lower left dental region as an example, with the doctor's left hand as the left side, place the mouth opener 23 on the right side of the teeth, with the right teeth biting into the occlusal groove 231. Rotate the barrier cloth 1 to the position corresponding to the pre-set hole 11 and the dental region, and widen the pre-set hole 11 so that it fits over the affected tooth. The elastic band 34 locks the barrier cloth 1 at the edge of the pre-set hole 11 to the roots of the two affected teeth. With the direction facing outwards as the front and the direction facing inwards as the back, pull one of the fixing ropes so that the first fixing block 32 passes through the interdental space and is stretched forward around the first affected tooth. At this time, the barrier cloth 1 at the interdental space is stretched. The first fixing ring 33 is set at the position of the barrier cloth 1 in front of the affected tooth on the lingual side. After the fixing block 32 passes through the fixing ring 33, it is locked. Pull the other fixing rope. The rope allows the second fixing block 32 to pass through the interdental space and be stretched backward around the second affected tooth, intersecting with the first fixing rope. The second fixing ring 33 is located behind the second affected tooth, close to the buccal side. The second fixing block 32 and the second fixing ring 33 are fixed. The edge of the diaphragm 1 is passed through the inside of the facebow 2 and folded outward to hang on the outer protruding rod 21, so that the diaphragm 1 is spread open outside the mouth. At this time, the shape of the diaphragm 1 is a bowl shape that coincides with the cavity. Only the affected tooth is exposed, and the rest of the oral cavity structure is blocked inside the mouth by the diaphragm 1 to facilitate the doctor's operation. The doctor holds a dental instrument to grind the tooth. The instrument also has the function of flushing and absorbing water. The slight residual water stains also enter the bottom of the diaphragm 1 through the guide strip. After the operation is completed, the fixing block 32 is removed, and the facebow 2 and the diaphragm 1 are taken out.

[0068] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0069] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0070] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A universal rubber dam apparatus for milk teeth, characterized in that, The device includes a barrier cloth with preset holes, the positions of which correspond to the positions of the teeth, and the shapes of which correspond to the shapes of two adjacent molars. A fastener is provided at the preset hole, and the fastener includes a fixing line, which passes through the gap between the two molars and is fixed to the barrier cloth.

2. A universal barrier device for a deciduous molar according to claim 1, wherein, The fastener also includes an elastic band, which is arranged around the edge of the preset hole, and the fixing line is connected to the elastic band at the gap of the molar.

3. The universal rubber dam device for deciduous molars according to claim 1, characterized in that, One end of the fixing line is connected to a fixing block, and a fixing ring is provided on the barrier cloth. The fixing block and the fixing ring are connected.

4. A universal rubber dam device for deciduous molars according to claim 1, characterized in that, The edge of the barrier is connected to a face bow, the shape of which is adapted to the outer edge of the barrier, and the area of ​​the face bow is larger than the area of ​​the oral cavity.

5. A universal rubber dam device for deciduous molars according to claim 4, characterized in that, The face bow has an entrance portion that extends perpendicularly into the opening from the barrier cloth, and a mouth support is connected to one end of the entrance portion inside the opening.

6. A universal rubber dam device for deciduous molars according to claim 5, characterized in that, The mouth opener includes a main body, and occlusal grooves are provided on both sides of the main body. The occlusal grooves abut against the upper and lower molars respectively, and the distance between the occlusal grooves on both sides gradually increases as they move away from the oral cavity.

7. A universal rubber dam device for deciduous molars according to claim 6, characterized in that, The inlet includes a bent rod, one end of which is connected to the face arch, the middle of which is bent to enter the oral cavity, and the other end of which is connected to the mouth support.

8. A universal rubber dam device for deciduous molars according to claim 5, characterized in that, The inlet portion includes two connecting rods, which are respectively connected to an upper occlusal member and a lower occlusal member. The upper occlusal member is configured to conform to the direction of the upper teeth, and the lower occlusal member is configured to conform to the direction of the lower teeth. The upper occlusal member and the lower occlusal member are respectively provided with occlusal grooves, which fit with the upper and lower teeth.

9. A universal rubber dam device for deciduous molars according to claim 1, characterized in that, A drainage strip is provided at a position near the preset hole in the barrier cloth, and the drainage strip extends from the preset hole toward the center of the barrier cloth.

10. A universal rubber dam device for deciduous molars according to claim 1, characterized in that, Both sides of the barrier fabric have a matte finish.