Hollow base liquid storage type removable denture

Abstract

The utility model belongs to the technical field of dental prosthesis design, and particularly discloses a hollow base liquid storage type removable denture which comprises a base and artificial teeth arranged on the base, the base is a hollow base with a liquid storage cavity, the hollow base is provided with a plurality of overflow discharge channels communicated with the liquid storage cavity, and the diameter of the outlet end of each overflow discharge channel is 0.3-1mm; a plurality of tissue surface adsorption structures are arranged on the tissue surface part of the base plate. The removable denture disclosed by the utility model can automatically and slowly release artificial saliva, so that the dry feeling of an oral cavity is reduced; due to the design of the tissue surface adsorption structure on the tissue surface, the contact area between the base plate and the oral cavity tissue is increased, so that the adsorption force is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dental prosthesis, in particular to a hollow base plate liquid storage type removable denture. BACKGROUND

[0002] Removable denture as a common oral prosthetic body plays an important role in restoring the mastication function and appearance of patients. In terms of structure, removable denture is generally composed of a base plate and artificial teeth arranged on the base plate. The conventional base plate of removable denture is mostly of solid structure, which is connected by resin and metal materials, and is heavy, and long-term wearing can easily cause the oral tissues of patients to be pressed, causing discomfort symptoms such as mucosa pain and ulcer, and even denture stomatitis. Especially for elderly patients with poor oral conditions, the discomfort is more obvious, which can reduce the acceptance and wearing compliance of patients to the denture.

[0003] In addition, in the oral environment, the fit and humidity between the base plate and the tissue surface in the oral cavity have always been key factors affecting the stability of the denture and the oral health of patients. At the same time, when the saliva secretion in the oral cavity is insufficient or the saliva circulation in the covered area of the base plate is not smooth, the base plate and the tissue surface are prone to be in a dry state, which not only aggravates the friction damage of the mucosa, but also causes the retention of the denture to decrease due to the lack of lubrication, and the denture is loose and falls off in speaking and mastication, which seriously affects the quality of life of patients.

[0004] In view of the above problems, the existing technical solutions mainly have the following kinds:

[0005] Solution one: denture adhesive. This technical solution enhances the retention of the denture by coating adhesive on the tissue surface of the removable denture. The technical defects of this technical solution are: (1) chemical stimulation exists, causing oral inflammation; (2) the adhesive effect is poor, and repeated coating is needed; (3) the residues are difficult to clean completely; (4) the residues accelerate the aging of the base plate, shortening the service life of the removable denture.

[0006] Solution two: liquid storage groove type removable denture. This technology places artificial saliva in a liquid storage groove on the surface of the removable denture or directly adds an independent liquid storage groove outside the removable denture to relieve dry mouth. The technical defects of this technical solution are: (1) the precision of manual preparation is low, and the liquid storage groove needs to be additionally processed and installed, and the processing procedure is complex; (2) the artificial saliva does not involve the base plate tissue surface, and is mainly concentrated in the area where the liquid storage groove is located, and the distribution is uneven, and the body sensation is poor; (3) the volume is large, and the foreign body sensation is obvious. INVENTION CONTENTS

[0007] The utility model provides a hollow base plate liquid storage type removable denture, which adopts a hollow structure base plate structure, and a liquid storage cavity and a discharge channel are arranged on the base plate to realize automatic release of artificial saliva.

[0008] A hollow base plate liquid storage type removable denture, comprising a base plate and artificial teeth arranged on the base plate, wherein the base plate is a hollow base plate with a liquid storage cavity, a plurality of liquid discharge channels are arranged on the hollow base plate and communicated with the liquid storage cavity, and the outlet end of the liquid discharge channel has a diameter of 0.2-1 mm; and a plurality of tissue surface adsorption structures are arranged on the tissue surface part of the base plate.

[0009] The hollow base plate removable denture prepared by the digital method comprises a hollow base plate and artificial teeth arranged on the hollow base plate.

[0010] The removable denture can be a full denture or a partial removable denture with a large base plate.

[0011] In the utility model, the liquid storage cavity is used for storing artificial saliva; as an optional solution, the base plate is provided with a liquid injection port communicated with the liquid storage cavity and a sealing plug matched with the liquid injection port; and the injection of artificial saliva can be realized simply and quickly after the artificial saliva is completely released.

[0012] In the utility model, the outlet end of the liquid discharge channel has a diameter of 0.2-0.8 mm, so that the artificial saliva in the liquid storage cavity can be slowly discharged under the capillary action after the oral tissue naturally contacts the base plate, the waste and discomfort caused by the large discharge of artificial saliva can be avoided, and the release mode and release amount of real saliva can be more truly simulated.

[0013] In the utility model, the hollow base plate is provided with a plurality of liquid discharge channels, which slowly release the artificial saliva placed in the hollow base plate to the tissue surface and the vestibular groove, simulate the natural moist environment of the oral cavity, keep the good fit between the base plate and the tissue surface, and are beneficial to maintaining the health of the oral mucosa.

[0014] As an optional solution, the inlet end of the liquid discharge channel has a diameter of 0.2-2 mm; the liquid discharge channel has a diameter of 0.2-2 mm; and the outlet end of the liquid discharge channel has a diameter of 0.3-0.6 mm.

[0015] As an optional solution, the liquid discharge channels are arranged in an array, the array period is 2-20 mm, and the inlet end of the liquid discharge channel has a larger diameter than the outlet end. In the utility model, the inlet end of the liquid discharge channel refers to one end of the liquid discharge channel through which the liquid in the liquid storage cavity flows, i.e. one end of the liquid storage cavity, and the other end of the base plate outer wall is the outlet end of the liquid discharge channel.

[0016] As preferred, the tissue surface adsorption structure is an array distributed groove structure; the groove structure is a cylindrical groove; the diameter ranges from 1 to 5 mm; the interval between structures, i.e. the array period, is 2 to 20 mm; and the depth is 0.4 to 1 mm. As a specific preferred, the diameter of the cylindrical groove is 4 mm, the depth is 0.5 mm, and the center distance between adjacent small grooves is 5 mm.

[0017] In the utility model, the tissue surface of the hollow base is provided with an array distributed groove structure, when the oral tissue extrudes the base, the grooves increase the contact area between the base and the oral tissue, and simulate the vacuum structure formed between the octopus sucker and the soft tissue, thereby improving the adsorption force and enhancing the stability of the denture in the oral cavity. As preferred, the groove structure is arranged at the part of the base in contact with the upper or lower jaw tissue of the oral cavity.

[0018] As preferred, the outlet end of the discharge channel is arranged at the part of the base in contact with the oral tissue. This can further ensure the slow and uniform release of artificial saliva under the capillary action. At the same time, this structure can ensure the release of artificial saliva between the denture and the tissue surface, and more effectively provide the moistening effect.

[0019] As preferred, the support column is arranged in the liquid storage cavity in an array distribution. The support column serves as a support structure of the central control base, which can reduce the weight of the base while ensuring the overall strength of the base. The shape and layout of the support structure are optimized and designed, and the 3D printing technology can be used to customize the base according to the mechanical principle and the specific anatomical structure of the oral cavity of the patient, so that the base can uniformly disperse the pressure when stressed, effectively avoid deformation and breakage of the base, and improve the service life of the denture.

[0020] As preferred, the diameter of the support column ranges from 1 to 5 mm; and the array period is 10 to 50 mm.

[0021] As preferred, the support column and the base are an integral molding structure. The support column is made of the same material as the base. The existing additive manufacturing (such as 3D printing) method can be used to make it. The integral molding structure further improves the fit and comfort of the denture and the oral cavity.

[0022] As preferred, the base is a light-cured resin base.

[0023] As preferred, the base is a light-cured resin base for additive manufacturing.

[0024] In the utility model, when the removable denture is made, the oral cavity structure of the user can be scanned by the oral cavity scanning device, the personalized denture design is carried out, and the removable denture is made through 3D printing, so that the manufacturing method is simple and the fitting degree is better.

[0025] The base plate can be a maxillary base plate or a mandibular base plate, and can be made according to the needs of a user.

[0026] Compared with the prior art, the utility model has the following innovative points:

[0027] 1. Reducing weight: the design of the hollow base plate and the internal support structure significantly reduces the weight of the denture under the premise of ensuring the strength of the denture, and improves the comfort of the patient wearing.

[0028] 2. Maintaining oral moisture: the small hole structure of the discharge channel can slowly release artificial saliva by using capillary force, maintain the moisture of the oral tissue surface and the vestibular groove, reduce the dry feeling of the oral cavity, be beneficial to oral health, and at the same time improve the fit of the denture and the tissue surface, and enhance the stability of the denture.

[0029] 3. Enhancing adsorption: the array of cylindrical small grooves on the tissue surface increases the contact area of the base plate and the oral tissue, thereby improving the adsorption, making the denture more stable in the oral cavity, reducing the displacement and shaking of the denture in the chewing process, and improving the chewing efficiency of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a structure schematic view of a hollow base plate liquid storage type removable denture in the embodiment.

[0031] Figure 2 It is Figure 1 A top view of the removable denture corresponding to the upper middle teeth.

[0032] Figure 3 It is Figure 1 A bottom view of the removable denture corresponding to the lower middle teeth.

[0033] Figure 4 It is a schematic diagram of each group in the adsorption structure arrangement density test experiment.

[0034] Figure 5 It is the test result of the adsorption structure arrangement density.

[0035] Figure 6 It is a front view of the upper and lower dentures and the remaining tooth model of another hollow base plate liquid storage type removable denture in the embodiment.

[0036] Figure 7 It is Figure 6 The structure schematic view of the upper and lower dentures corresponding thereto. DETAILED DESCRIPTION

[0037] The utility model will be further described below in combination with the drawings:

[0038] Referring to Figure 1 ,Figure 2 and Figure 3 as shown. Figure 1 The upper and lower teeth corresponding removable dentures each include a base and artificial teeth arranged on the base. The base is a hollow base with a liquid storage cavity, and a plurality of discharge channels 7 are arranged on the hollow base and communicate with the liquid storage cavity. The tissue surface of the base is provided with a plurality of tissue surface adsorption structures 5.

[0039] The upper teeth corresponding removable denture includes a maxillary base 1 and maxillary artificial teeth 3 arranged on the maxillary base 1. The lower teeth corresponding removable denture includes a mandibular base 2 and mandibular artificial teeth 4 arranged on the mandibular base 2. The maxillary base 1 and the mandibular base 2 are each provided with arrayed tissue surface adsorption structures 5. In this embodiment, the tissue surface adsorption structure 5 is a cylindrical groove structure. The cylindrical groove structure is arranged on the part of the base in contact with the palate or mandible tissue, facilitating the fixation of the base and the palate or mandible tissue. The diameter of the cylindrical groove structure ranges from 1 to 5 mm; the array period is 2 to 20 mm; and the depth is 3 to 10 mm.

[0040] The maxillary base 1 and the mandibular base 2 are each provided with arrayed discharge channels 7, which communicate with the liquid storage cavity in the maxillary base 1 and the mandibular base 2 and are used to release artificial saliva therein. The maxillary base 1 and the mandibular base 2 are each provided with an artificial saliva injection port 6 for rapid injection of artificial saliva. The injection port 6 is generally provided with a corresponding sealing plug. The outlet end of the discharge channel is arranged on the part of the base in contact with the oral tissue, such as the part 8 in contact with the palate or mandible tissue, the part 9 in contact with the oral tissue connected to the upper lip or lower lip, etc. The inlet end diameter of the discharge channel is 0.2 to 2 mm, and the outlet end diameter is 0.3 to 0.6 mm. The diameter of the discharge channel is 0.2 to 2 mm, the array period is 2 to 20 mm, and the inlet end diameter of the discharge channel is greater than the outlet end diameter.

[0041] The liquid storage cavity of the maxillary base 1 and the mandibular base 2 is provided with arrayed support columns, which are integrally formed with the base and are formed at one time during processing. In this embodiment, the support column is a cylindrical structure with a diameter ranging from 1 to 5 mm and an array period of 10 to 50 mm. The base and the support column are a light-cured resin base dedicated to dentures and can be made by 3D printing.

[0042] The removable denture of this embodiment is actually made as follows:

[0043] 1. Model acquisition: First, use an oral scanner to accurately scan the patient's oral cavity to obtain a three-dimensional data model of the patient's oral cavity. The data model is transmitted to a computer-aided design (CAD) software.

[0044] 2. Denture design: In the CAD software, according to the patient's oral anatomy and repair needs, the model of the 3D printed hollow base plate removable denture is designed. The shape and thickness of the hollow base plate are determined, and the internal support structure is designed (all can use existing technology). The discharge channel with an inlet diameter of 0.6 mm and an outlet diameter of 0.4 mm is designed on the base plate, and the distribution position and number are planned (the distance between the two adjacent discharge channels or the array period is 10 mm) to ensure that the artificial saliva can be uniformly released to the tissue surface and the vestibular groove. The array distributed cylindrical grooves are designed on the tissue surface of the base plate, with a diameter of 2-4 mm, a depth of 0.5 mm, and a center distance of 5 mm. At the same time, the artificial teeth are accurately arranged on the base plate according to the designed model to simulate the morphology and occlusion relationship of the patient's natural teeth.

[0045] 3. 3D printing: The designed denture model is imported into the 3D printer, and the approved medical grade 3D printing light curing resin base plate (light curing denture base plate resin for additive manufacturing, Xunshi, China) and artificial tooth material (light curing crown bridge resin for additive manufacturing, Xunshi, China) are selected. According to the material characteristics and the requirements of the denture model, the parameters of the 3D printer are set, such as printing temperature, printing speed, layer thickness, etc. Start the 3D printer and print the hollow base plate and artificial teeth layer by layer according to the predetermined path.

[0046] 4. Post-processing: After printing, the hollow base plate and artificial teeth are post-processed. Remove the support material and excess printing material on the surface, clean and disinfect the denture. Polish and polish the surface of the denture to make it smooth and improve the comfort of wearing. Assemble the artificial teeth and the hollow base plate with light curing resin. Inject artificial saliva into the hollow base plate, seal the saliva injection port with airtight plug after completion, check whether the discharge hole can normally discharge liquid, and ensure that the functions of the denture meet the design requirements.

[0047] 5. Trial and adjustment: The finished denture is given to the patient for trial. Observe the positioning of the denture in the patient's mouth, stability and fit with the tissue surface. Check if the patient's occlusion is normal, and if necessary, make appropriate adjustments and modifications to the denture until the patient is comfortable and the denture functions normally.

[0048] Figure 1 The schematic diagram of the upper and lower denture structures of the actual processed full tooth structure.

[0049] Figure 6 The front view of the actual processed upper and lower dentures and the remaining teeth model (the outlet diameter of the discharge channel is 1 mm), in which the upper denture is a full tooth structure denture, and the lower denture is a partial tooth structure denture. The remaining teeth 602 on the model 601 correspond to the part of the teeth that the user can continue to use.Figure 7 For Figure 6 The corresponding upper and lower denture structure diagram, where the reserved gap 701 corresponds Figure 6 The position of the remaining teeth 602.

[0050] Tensile test of tissue surface adsorption structure:

[0051] Test method: through 3D printing, make block structure of length * width * height: 20*20*4mm, which is designed with group tissue surface adsorption structure, use pig skin tissue after removing grease layer to simulate oral tissue, and carry out tensile test after pressure by using universal mechanical testing machine.

[0052] Tissue surface adsorption structure arrangement density test:

[0053] See Figure 4 , wherein the A1, B1, C1 group of tissue surface adsorption structure is cylindrical, the diameter is 2mm, the depth is 0.5mm, the center distance of A1 group is 6mm, the center distance of B1 group is 5mm, and the center distance of C1 group is 4mm.

[0054] The test results are shown in Figure 5 , and the conclusions are as follows: compared with the smooth surface, the surface with cylindrical groove structure has greater separation force after contacting and pressing the soft tissue. When the arrangement density of cylindrical groove increases to a certain extent, the maximum separation force has no statistical difference, and the best center distance is 5mm.

Claims

1. A hollow base plate liquid-storing removable denture comprising a base plate and artificial teeth arranged on the base plate, characterized in that, The base is a hollow base with a liquid storage cavity, and a plurality of overflow channels are arranged on the hollow base and communicated with the liquid storage cavity, and the outlet end of the overflow channel has a diameter of 0.2-1mm; the tissue surface part of the base is provided with a plurality of tissue surface adsorption structures.

2. The liquid-storing denture of claim 1, wherein, The inlet end of the overflow channel has a diameter of 0.2-2mm; the diameter of the overflow channel is 0.2-2mm; and the outlet end of the overflow channel has a diameter of 0.3-0.6mm.

3. The liquid-storing denture of claim 1, wherein, The overflow channels are arranged in an array, the array period is 2-20mm, and the inlet end of the overflow channel has a diameter greater than the outlet end.

4. The liquid-storing denture of claim 1, wherein, The tissue surface adsorption structure is a groove structure arranged in an array, the groove structure has a diameter in the range of 1-5mm, the array period is 2-20mm, and the depth is 0.4-1mm.

5. The liquid-storing denture of claim 4, wherein, The groove structure is arranged on the part of the base in contact with the upper or lower palate tissue of the oral cavity.

6. The liquid-retentive denture of claim 1, wherein, The outlet end of the overflow channel is arranged on the part of the base in contact with the oral tissue.

7. The liquid-retentive denture of claim 1, wherein, The liquid storage cavity is provided with an array of support columns.

8. The liquid-retentive denture of claim 7, wherein, The support column has a diameter in the range of 1-5mm, and the array period is 10-50mm.

9. The liquid-storing denture of claim 7, wherein, The base and the support column are an integral structure.

10. The liquid-retentive denture of claim 1, wherein, The base is a light-cured resin base.

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