KR101872448B1 - method for manufacturing denture and system thereof - Google Patents

method for manufacturing denture and system thereof Download PDF

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Publication number
KR101872448B1
KR101872448B1 KR1020170098996A KR20170098996A KR101872448B1 KR 101872448 B1 KR101872448 B1 KR 101872448B1 KR 1020170098996 A KR1020170098996 A KR 1020170098996A KR 20170098996 A KR20170098996 A KR 20170098996A KR 101872448 B1 KR101872448 B1 KR 101872448B1
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South Korea
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virtual
gingival
reinforcing
denture
image
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KR1020170098996A
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Korean (ko)
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김진철
김진백
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주식회사 디오
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/08—Artificial teeth; Making same
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/34—Making or working of models, e.g. preliminary castings, trial dentures; Dowel pins [4]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
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  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Dental Preparations (AREA)

Abstract

In order to improve precision and durability, the present invention includes a first step in which a scanning image of a gingival opacity corresponding to a target toothache is obtained; Wherein the virtual gum base and the virtual artificial tooth corresponding to a predetermined occlusion height are set such that an inner surface of the virtual gum base is set to coincide with an outer surface of a gingival image body included in the scanning image, A second step of setting an overlapping area between the outer surfaces of the substrate; And a virtual gum base on which a reinforcing portion is three-dimensionally designed and manufactured on the basis of an inner / outer surface profile of the overlapping region and the overlapping region is erased to form a reinforcing groove portion on the inner surface, and a virtual three- And a third step of fabricating the denture by bonding the reinforcing part to the reinforced cementing groove part.

Description

METHODS FOR MANUFACTURING DENTAL &

The present invention relates to a denture manufacturing method and a denture manufacturing system, and more particularly, to a denture manufacturing method and a manufacturing system with improved precision and durability.

In general, a denture is also referred to as a denture, which means an artificial implant that replaces a defective natural tooth and artificially restores the external shape and function.

In detail, when the natural tooth is left in a state of being lost, the facial shape is deformed due to the dental arch distortion of the adjacent tooth and the opposed tooth of the missing tooth, and the chewing function is deteriorated and the inconvenience to daily life is increased. Further, when the loss state of the natural teeth is maintained for a long period of time, the alveolar bone surrounding the missing teeth is absorbed into the body, which makes it difficult to install the artificial periodontal tissue.

The denture is provided to restore the masticatory function and prevent deformation of the periodontal tissue. The denture may be divided into partial / complete dentures according to the number of missing teeth, and may be classified into fixed type and removable type according to the fixing method. . At this time, the partial denture is installed using residual tissues such as peripheral teeth, alveolar bone and gums between the adjacent teeth in a partial edentulous region of the maxilla or mandible, and the complete denture is provided with the gingiva in the entire edentulous region of the maxilla or mandible It can be installed completely enclosed.

Herein, the denture includes an artificial tooth part which is fixed to cover a gingival sulcus and an artificial tooth part which replaces a missing tooth, and can be manufactured individually corresponding to different teeth arrangement, shape and occlusion height for each subject.

On the other hand, a conventional denture is manufactured by the following process. First, a tray or a wax, which is harmless to the human body, is filled in the tray selected to fit the tooth shape along the alveolar bone. Then, a tray filled with the resin or wax is installed inside the patient's mouth to make an impression, and a model for the artificial gum is formed based on the obtained impression.

At this time, paraffin is adhered to the upper surface of the model, that is, the part corresponding to the tooth missing part, to a predetermined thickness, and is installed inside the oral cavity of the patient. The thickness of the paraffin is adjusted according to the patient's sensitivity The height of the artificial abdomen is set.

Then, when the first model is manufactured corresponding to the model and the height of the artificial abdomen of the artificial gum, the artificial gum can be finely adjusted to a height at which the artificial gum can be comforted when re-installed inside the oral cavity of the patient. The denture is manufactured based on the car model.

However, in the conventional denture manufacturing method, the measurement and adjustment of the inside of the patient's mouth is performed on the side of a practitioner such as a dentist, but the direct preparation of the denture is performed on the side of the manufacturer such as a stroke. Thus, the workpieces produced at each step are repeatedly crossed to the operator side and the manufacturer side.

In order to determine whether the denture or the denture was manufactured appropriately in the oral cavity, the patient was repeatedly visited to the practitioner's side and adjusted by installing it directly in the oral cavity. Therefore, it takes a long time to manufacture the denture, and the inconvenience caused by frequent visits of the patient to the practitioner is increased.

Furthermore, the denture should be made substantially thin so as to minimize the foreign body sensation when the denture is installed inside the oral cavity. In this case, durability of the denture deteriorates.

Therefore, in some cases, a metal reinforcing member is formed inside the dent in an insert mold.

In detail, in the conventional dentures, a model is manufactured by obtaining the impression of the target tooth and the mold production material is pressed on the outer surface of the model to mold the reinforcing member mold. At this time, since the metal mold manufacturing material is made of a metal material, the discomfort due to the foreign body is increased when the soft tissue is directly contacted with the gum tissue. Therefore, wax can be applied to the outer surface of the mold at a predetermined thickness in order to provide a space so that the mold-making material does not directly touch the outer surface of the mold. When the mold for the reinforcement member is manufactured, a reinforcing member is manufactured and insert molded on the basis of the mold, so that a final denture can be manufactured.

However, as described above, the process of manufacturing the reinforcing member is complicated, and it is difficult to form the reinforcing member substantially at the inner side of the denture so that the manufacturing time is long and the manufacturing cost is increased . Further, since the denture and the reinforcing member are made of different materials, adhesiveness between the denture and the reinforcing member is low, so that gaps or cracks are formed between the joints of the reinforcing member and the denture due to repetitive pressing force there was.

Korea Patent No. 10-0403834

In order to solve the above-mentioned problems, the present invention provides a method of manufacturing a denture with improved precision and durability and a manufacturing system.

According to an aspect of the present invention, there is provided an image processing method comprising: a first step of obtaining a scanning image of a gingival opacity corresponding to a target dental impairment; Wherein the virtual gum base and the virtual artificial tooth corresponding to a predetermined occlusion height are set such that an inner surface of the virtual gum base is set to coincide with an outer surface of a gingival image body included in the scanning image, A second step of setting an overlapping area between the outer surfaces of the substrate; And a virtual gum base on which a reinforcing portion is three-dimensionally designed and manufactured on the basis of an inner / outer surface profile of the overlapping region and the overlapping region is erased to form a reinforcing groove portion on the inner surface, and a virtual three- And a third step of fabricating the denture by bonding the reinforcing part to the reinforced cementing groove part.

Here, in the first step, the scanning image is obtained by pulling and pushing soft tissue inside the oral cavity such that the entire outer surface of the gingival opposed upper body is exposed by a pulling device in which the scanning image is elastically deformed corresponding to the arcuate profile of the gingival opposed body, In the second step, it is preferable that the occlusion height is calculated by adjusting the thickness of the occlusal alignment base disposed between the target mouth jaw and the mating occlusal side occluded with the occlusal aligning base according to the grip sensitivity.

The method of claim 1, further comprising, in the first step, obtaining a confrontation scanning image of the opposing object corresponding to the opposing dental appliance, wherein, in the second step, the gingival bag image and the opposing object included in the opposing scanning image An image is arranged corresponding to the occlusion height and the virtual artificial teeth are fictitiously arranged in an occlusal space between the virtual gum base and the mating object image, and the virtual gum base is protruded from the outer surface of the virtual gum base, Wherein the engaging protrusions are arranged in an overlapping arrangement, and in the third step, the virtual prosthesis is provided with an engaging groove for engaging with an outer surface of the engaging protrusion.

In addition, in the third step, the inner surface of the reinforcing portion corresponds to the outer surface profile of the gingival saddle, and the inner surface of the reinforcing trough is designed to correspond to the outer surface profile of the reinforcing portion, wherein the reinforcing portion, A plurality of rubbing portions may be set in the reinforcing portion so that the resin adhesive that is applied between the first and second substrates and is provided with a fixing force is cured through.

In addition, it is preferable that, in the third step, the engaging protrusions and the engaging recesses, which are engaged with each other, are further provided on the opposed side portions of the reinforcing portion and the reinforcing recess portion.

According to another aspect of the present invention, there is provided an imaging apparatus comprising: an imaging device that acquires a scanning image of a gingival opacity corresponding to a target dental evacuation state in a state where a traction device for pushing and pulling a soft tissue is installed inside the oral cavity; Wherein a virtual gingival base is virtually disposed on a gingival image body image included in the scanning image and a virtual artificial tooth is virtually arranged corresponding to a predetermined bite height on the virtual gingival base, Wherein the virtual gum base and the virtual artificial tooth having the reinforcing groove formed on the inner surface of the reinforcing portion are erected on the basis of the inner and outer surface profile of the overlapping region set to a predetermined thickness between the outer surface of the virtual gum base and the outer surface of the base, A planner for three-dimensionally designing the denture base; And a manufacturing apparatus for manufacturing the designed reinforcement portion and the denture base.

Through the above-mentioned solution, the denture manufacturing method and the manufacturing system according to the present invention provide the following effects.

First, based on the scanning image obtained for the inside of the mouth, the overall designing / manufacturing process of the reinforcing part reinforced with the supporting strength against the impact or chewing pressure is carried out at the same time. Therefore, A high-quality denture with improved durability can be designed and manufactured.

Second, since the design information of the reinforced portion and the reinforced portion of the reinforcing portion are obtained at a time from the shape information of the overlapping region based on the image of the gingival body and the virtual gum base, the design / manufacturing convenience is improved, The coupling accuracy between the reinforcing portion and the reinforcing fitting groove portion can be remarkably improved.

Third, the reinforcement is assembled in a simple manner that it is coupled to the inside of the reinforcing recess, and the inner surface of the combined reinforcement and the inner surface of the denture are formed into a substantially continuous profile, based on the outer profile of the gingival saddle It is possible to significantly reduce the sense of foreign body or discomfort when installed inside the oral cavity.

Fourth, since the reinforcing portion is made of high strength synthetic resin material, even if the denture is made thin and lightweight, it can be prevented from breakage due to impact and chewing pressure, and the reinforcing portion, the artificial gum portion, The durability of the denture can be further improved since the adhesive strength between the same material is increased.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a flow diagram illustrating a method of manufacturing a denture according to one embodiment of the present invention.
2 is a block diagram of a denture manufacturing system in accordance with an embodiment of the present invention.
FIG. 3 is an exemplary view showing a use state of a dental traction apparatus in a denture manufacturing method according to an embodiment of the present invention; FIG.
4A and 4B are views illustrating a process of setting an overlap area in a method of manufacturing a denture according to an embodiment of the present invention.
5 is a view illustrating a process of setting a reinforcing portion and a reinforcing groove portion in a method of manufacturing a denture according to an embodiment of the present invention.
6 is an exploded perspective view of a denture made in accordance with an embodiment of the present invention.
FIG. 7 is a cross-sectional view illustrating a state where a denture is manufactured according to an embodiment of the present invention. FIG.
8 is a cross-sectional view illustrating a state where a denture is manufactured according to a modification of the embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, a method and apparatus for manufacturing a denture according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a flowchart illustrating a method of manufacturing a denture according to an embodiment of the present invention, and FIG. 2 is a block diagram illustrating a denture manufacturing system according to an embodiment of the present invention. FIG. 3 is an exemplary view showing a use state of a dental traction apparatus in a denture manufacturing method according to an embodiment of the present invention. FIGS. 4A and 4B are views showing a method of manufacturing a denture according to an embodiment of the present invention, FIG. 2 is a diagram illustrating a process of setting a region. 5 is a view illustrating a process in which a reinforcing portion and a reinforcing groove are formed in a method of manufacturing a denture according to an embodiment of the present invention. FIG. 6 is an exploded perspective view of a denture disassembly process according to an embodiment of the present invention. It is a perspective view. 7 is a cross-sectional view illustrating a state where a denture is manufactured according to an embodiment of the present invention, and FIG. 8 is a cross-sectional view illustrating a state where a denture manufactured according to a modification of the embodiment of the present invention is installed. to be.

As shown in FIGS. 1 to 8, the denture manufacturing method according to the present invention comprises the following steps. Hereinafter, the method of manufacturing the denture according to the present invention is described as an example of the manufacturing process of the complete denture in which the one of the maxillary and mandibular incisors is edentulous. However, even if the at least one side is partial edentulous or the upper and lower dentition is both edentulous, The denture manufacturing method according to the present invention can be applied.

At this time, the denture manufacturing method according to the present invention includes: acquiring a scanning image (s10) serving as a basis of design information; virtual placement of a virtual gum base and a virtual artificial tooth and setting an overlapping area (s20) And designing and manufacturing the denture (s30) based on the three-dimensional information of the base and the virtual artificial tooth.

The denture manufacturing method is performed by the denture manufacturing system 100 including the imaging device 10, the planing unit 20 and the manufacturing apparatus 30 so that a denture optimized for a subject who needs a denture .

In detail, in the method of manufacturing a denture according to the present invention, a scanning image of a gingival bag body corresponding to a target toothache is obtained (s10). In this case, the target dental impairment refers to dental caries in which the denture is installed in place of teeth missing in the maxillary or mandibular internal organs of a subject, and the gingival over-body 1 includes a gingiva surrounding the alveolar bone, Organization.

At this time, the scanning image 6b is acquired while the imaging device 10 is moved along the dental arch line of the gingival opposed upper body 1 while the subject is open, and the surface shape of the gingival opposed upper body 1 Information. That is, the present invention can design and manufacture the denture 200 based on the scanning image 6b for the gingival overt body 1 in which the deformation of the soft tissue by the external element is substantially eliminated. As the degree of fit between the inner surface of the denture 200 and the outer surface of the gingival sagittal body 1 is remarkably improved, the denture 200 is provided on the inner surface of the mouth when the denture 200 is installed, The pressure applied can be minimized.

Of course, the scanning image may be acquired by acquiring the impression of the subject's mouth and scanning the outer surface of the model based on the scanned image.

Here, the imaging device 10 is preferably provided with an oral scanner for continuously photographing the outer surface of the gingival over body 1 while being moved along the arched dental arch profile of the target dental arch. A traction device (not shown) for pushing the intraoral oral soft tissue such as the tongue 2, the lips 3 and the ball mucous membrane so as to expose the entire outer surface of the gingival opacity 1 when the scanning image 6b is acquired 60) is preferably used.

At this time, the pulling device 60 is inserted between the soft tissue and the gingival opposed upper body 1 adjacent to at least one side of the inner and outer side of the gingival opposed upper body 1, and the soft tissue is inserted from the gingival opposed upper body 1 And is placed inside the oral cavity to be spaced apart. The outer side of the upper half of the gum body 1 corresponds to the labial and buccal side of the oral cavity and the inner side of the upper body 1 corresponds to the lingual side desirable.

In detail, the pulling device 60 includes a pulling base portion 61 formed with a receiving space for accommodating the gingival opposed upper body 1 and elastically deformed corresponding to the dental arch profile of the gingival opposed upper body 1, And a grip portion 62 provided on one side of the base portion 61. At this time, the pulling device applied to the mandibular side is provided with the pulling base portion 61 so as to entirely cover the inner and outer side portions of the gingival sagittal body 1, so that the tongue 2 and the lips 3, Can be pushed simultaneously. Alternatively, the pulling device applied to the maxillary side may be configured such that the pulling base portion 61 surrounds the outer side of the gingival over-body 1, so that the lips 3 and the ball mucosa are pulled and pressed, The outer surface shape of the palate connected to the medial side of the palate can be clearly scanned.

When the grip portion 62 is pushed in the gripped state, the conscious / unconscious flow of the soft tissue is restrained by the pulling base portion 61 as the pulling force is applied to the soft tissue adjacent to the gingival opposed upper body 1 . As a result, the imaging device 10 is prevented from deviating from the preferable scanning path, so that the scanning operation can be performed stably and the distortion of the obtained scanning image 6b can be minimized.

Since the entire outer surface of the gum base body 1 is exposed while the soft tissue is separated from the inner and outer portions of the gum base body 1 by the pulling device 60, The clarity and precision can be significantly improved. Accordingly, as the accuracy of the denture 200 designed and manufactured on the basis of the scanning image 6b is improved, the sense of foreign body and inconvenience can be further minimized when the denture 200 is installed inside the oral cavity.

At this time, the imaging apparatus 10 may further include a CT imaging device to acquire a CT image of the target premature ejaculation to correct dental distortion of the scanning image 6b obtained through the oral scanner.

On the other hand, the virtual gum base and the virtual artificial tooth, which are set so that the inner surface is configured to match the outer surface of the gingival image body included in the scanning image, are virtually arranged. An overlap area is set between the outer surface of the gingival bag image and the outer surface of the virtual gum base (s20). At this time, the process in which the scanning image 6b is loaded and the virtual gum base 210m and the virtual artificial tooth 220m are virtually disposed on the scanning image 6b and the overlap area e is set, (20). ≪ / RTI >

In detail, the virtual gum base 210m is three-dimensional shape information corresponding to the artificial gum 210 installed in the target tooth cavity, and the virtual artificial teeth 220m are formed in the artificial gum portion 220m instead of the missing tooth. Dimensional shape information corresponding to the artificial abutment 220 disposed on the outer surface side of the artificial abdomen 210. The three-dimensional shape information of the virtual gum base 210m and the virtual artificial teeth 220m is stored in the digital library and is loaded into the planning unit 20 so that the gum base And is disposed virtually on the outer surface side of the body image 1m.

At this time, the virtual gum base 210m and the virtual artificial teeth 220m are stored as standardized three-dimensional shape information, respectively. The virtual gum base 210m and the virtual artificial tooth 220m are loaded into the planning unit 20, Can be adjusted according to the set occlusal height (VD). Alternatively, the three-dimensional shape information of the virtual gum base 210m and the virtual artificial teeth 220m classified into a plurality of categories according to a predetermined selection item is stored in the digital library, and one virtual gum base optimized for the subject, Virtual artificial teeth may be extracted and loaded. At this time, the selection item can be designated by calculating a standardized average value for the dental arch line, the occlusal height, and the tooth arrangement position by sex and age. In this case, the shape information having a high matching degree with the oral cavity of the subject can be quickly extracted The ease of design can be significantly improved since the image calibration process can be shortened.

Here, the virtual gum base 210m is provided as solid-type three-dimensional region information having a size exceeding the volume of the upper side of the gingival image body 1m so as to surround the outer surface of the gingival image body 1m, Is set so as to correspond to the outer surface profile 1n of the gingival image body 1m. Therefore, the coupling groove 211 formed on the inner surface of the artificial gum 210 designed on the basis of the virtual gum base 210m can be precisely set so as to be substantially coincident with the gum base body 1 .

One side of the overlapping region e corresponds to the inner surface of the virtual gum base 210m, that is, the outer surface profile 1n of the gingival image body 1m and the outer surface profile 1n of the virtual gum base 210m Dimensional three-dimensional region information which is projected so as to have a thickness of < RTI ID = 0.0 >

For example, the overlapping area e corresponds to a boundary area surface that equally divides the gingival bag image 1m and the three-dimensional outer profile 210n, 1n of the virtual gum base 210m at regular intervals Can be set as a solid area between the outer surface e1 and the inner surface corresponding to the outer surface profile 1n of the gingival bag image 1m. Alternatively, the outer surface of the overlapping region e may be set as a boundary region surface spaced at a predetermined interval from the outer surface profile 1n of the gingival image body 1m to the outer surface side of the virtual gum base 210m . The outer surface of the overlapping region e may be set as a boundary region spaced from the outer surface profile 210n of the virtual gum base 210m to the outer surface side of the gingival opposed body 1m at predetermined intervals .

The outer edge e2 of the overlapping region e may be spaced apart from the inner edge of the inner surface of the virtual gum base 210m so as to be larger than the inner surface area of the virtual gum base 210m It can be set to a small area.

That is, according to the present invention, the artificial gum 210 and the reinforcing part 240 to be described later can be designed simultaneously based on the shape information of the gum base body image 1m and the virtual gum base 210m, Can be significantly improved. Further, since the design information of the reinforcing coupling groove 217, in which the reinforcing portion 240 and the reinforcing portion 240 are closely fused, is calculated on the basis of one overlapping region (e) shape information, the assembly reliability is further improved .

In addition, the virtual artificial teeth 220m may individually extract the three-dimensional shape information corresponding to each tooth, and may be individually disposed on the outer surface side of the virtual gum base 210m, or a plurality of teeth may be arranged in one set And may be simultaneously disposed in the virtual gum base 210m. Further, the virtual artificial teeth 220m may be stored in the digital library in a state corresponding to the standardized dental arch line, and the arrangement interval and the arrangement position may be virtually adjusted according to the dental arch of the target dental arch.

On the other hand, based on the inner / outer surface profile of the overlapping region, the reinforcing portion is three-dimensionally designed and manufactured, the overlapping region is erased to set the reinforcing groove portion on the inner surface, and the virtual gum base Dimensional design and manufacture. At this time, the reinforcing portion is coupled to the reinforced fitting groove portion to manufacture the denture (s30).

In the following description, it is preferable that the reinforcing portion, the reinforcing coupling groove, and the coupling protrusion, which are described as 240m, 217m and 212m, are three-dimensional shape information designed based on the scanning image 6b. It is preferable that the reinforcing portion, the reinforcing coupling groove and the engaging protrusion, which are denoted by reference numerals 240, 217, and 212, are actually manufactured on the basis of the above three-dimensional shape information.

In detail, the three-dimensional design of the virtual gum base 210m and the virtual artificial tooth 220m in which the reinforcing portion 240m, the reinforcing coupling groove portion 217m are set is performed in the planning portion 20, The manufacture of the reinforcement 240 and the denture base 230 based on the three-dimensional design information is performed through the manufacturing apparatus 30. [ Here, the denture base 230 may be understood as a state in which the artificial gum 210 and the artificial abdomen 220 are engaged. That is, according to the present invention, the denture 200 having improved support strength against impact and pressure can be manufactured as the reinforcing portion 240 is coupled and fixed to the inner surface of the through-hole gum 210.

The inner surface of the reinforcing portion 240m corresponds to the outer surface profile 1n of the gingival image body 1m and the inner surface of the reinforcing coupling groove portion 217m corresponds to the outer surface profile of the reinforcing portion 240m. It is desirable to design. Since the outer surface profile of the reinforcing portion 240m corresponds to the outer surface profile of the overlapping region e, the reinforcing portion 240m and the reinforcing portion 240m are formed on the basis of the three- The design information of the reinforced compounding groove 217m can be obtained at the same time.

That is, the inner surface of the reinforcing portion 240m corresponds to the outer surface of the image of the gum base body 1, and the outer surface of the reinforcing portion 240m and the inner surface of the reinforcing fitting groove portion 217m share the overlapping region e), it is possible to significantly improve the mutual coupling degree. When the manufactured reinforcing portion 240 is inserted into the reinforcing coupling groove 217, a gap between the mutually facing surfaces is not substantially generated, and the inner surface of the reinforcing portion 240 is formed in the fitting groove portion 211, And can be closely installed inside the oral cavity.

At this time, it is preferable that the reinforcing portion 240 is coated with a resin adhesive (r) between the reinforcing fitting groove 217 and the reinforcing fitting groove 217.

The artificial gum 210 may be made of a synthetic resin material applicable to the inside of the oral cavity and the reinforcing part 240 may be made of a synthetic resin material having a higher strength than a synthetic resin material used for manufacturing the artificial gum 210 . For example, the reinforcing portion 240 may be made of an engineering plastic material such as polyether-ether-ketone (PEEK), poly-ether-ketones-ketones (PEKK)

Accordingly, even if the artificial gingiva 210 is made as thin as possible so that the foreign body feeling is minimized when the denture 200 is installed inside the oral cavity, the reinforcing part 240 is fixed on the inner surface side, It is possible to prevent the breakage by the breakage.

Moreover, since the strength of the high strength synthetic resin material is superior to that of a general synthetic resin material, the strength of the high strength synthetic resin material is less than that of a metal material, so that the discomfort of the subject can be minimized. In addition, the synthetic resin material can be precisely machined in accordance with information designed through injection molding using a mold as well as three-dimensional printing, so that the precision of forming between the reinforced portion 240 and the reinforced fitting groove 217 to be manufactured is remarkably improved .

When the reinforcement 240 is made of the same material as the artificial gum 210, the reinforcement 240 and the artificial gum 210 may be made of a synthetic resin material having the same strength. However, when the reinforcement 240 is made of the same material as the artificial gum 210, And the supporting strength against pressure is lowered. In addition, when the artificial gum 210 is made of the same material as the reinforcing part 240, the support strength is improved but the foreign body feeling is increased and the manufacturing cost is increased. Therefore, the reinforcing portion 240 and the artificial gum 210 are made of a synthetic resin material substantially corresponding to the resin adhesive r, so that the bonding strength between the same type of material is remarkably improved, The supporting strength of the denture 200 can be remarkably improved.

Of course, the reinforcing portion 240 may be made of a metal material such as titanium or the like, and may be made of various materials that are harmless to the human body and applicable to the interior of the oral cavity, while reinforcing the strength of the denture 200 It is possible.

Therefore, according to the present invention, as the denture 200 is designed and manufactured based on the scanning image 6b obtained by directly scanning the inside of the mouth, the degree of compatibility with the target denture can be remarkably improved. At this time, the reinforcing part 240, which can reinforce the durability of the denture 200 at the same time with the design of the artificial gum body 210, and the reinforced fitting groove part 217 The artificial gum 210 is made as thin as possible and can be prevented from being damaged by impact or pressure.

On the other hand, the height of the virtual artificial tooth 220m may be adjusted corresponding to the occlusion height VD optimized for the subject. At this time, the occlusion height (VD) can be calculated by adjusting the thickness of the occlusal alignment base disposed between the object jaw and the mating occlusal side occluded with the occlusal aligning base according to the grip sensitivity.

In detail, the occlusal alignment base is provided in the occlusal space formed between the upper and lower mandibles of the subject, and the thickness of the occlusal alignment base is adjusted corresponding to the occlusal height VD optimized for the subject while being pressed or cut according to the dental sensitivity. Such authoring sensitivity can be judged by direct expression of the subject, and can be judged by measuring electrical and chemical signals of the jaw joint and jaw muscles in some cases.

Since the occlusion height VD calculated as a value optimized for the subject is taken into consideration during the designing process of the denture 200, the height of the artificial abdomen 220, which can minimize the inconvenience of occlusion with the contradictory teeth, Lt; / RTI >

On the other hand, a confrontation scanning image for the opposing object corresponding to the opposing teeth may be obtained while acquiring the scanning image 6b. At this time, the opposing scanning image may further include a step of aligning the opposing object image 4m and the gingival bag image 1m so as to correspond to the occlusion height VD.

In detail, when the contra dentative tooth is a tooth contour, the contour scanning image includes three-dimensional shape information of the contour tooth and the gingo surrounding the lower edge of the contour tooth. The virtual artificial teeth 220m are arranged in an occlusion space between the virtual gum base 210m and the mating object image 4m arranged in alignment with the occlusion height VD.

Alternatively, when the contra dentition is edentulous, the contraband scanning image may be acquired including only the three-dimensional shape information of the contralateral dentition gingiva. The virtual teeth 220m are arranged on the virtual gum base 210m and the opposing object side (VD) in such a manner that the gingival obverse body image 1m and the opposing dentition gum images are aligned with the occlusion height VD, In the occlusion space between the virtual denture base and the virtual denture base. Here, the virtual denture base is preferably understood as a virtual gum base and a virtual artificial tooth which are arranged on the side of the mating object. That is, when the upper and lower jaws are all edentulous, the gap between the gums of the upper and lower jaws is calculated as the occlusion height (VD), and the dentures of the upper and lower males may be simultaneously designed and manufactured.

Further, the occlusal scanning image for the upper and lower jaws occluded in a state in which the occlusion alignment base is installed such that the gingival bag image 1m and the mating object image 4m are aligned and arranged according to the occlusion height VD is acquired .

That is, a common portion of each of the gingival image (1m) and the opposing object image (4m) is recognized as a matching point in the occlusal scanning image in the maxillary and mandibular images spaced apart by the thickness of the occlusion alignment base. The gingival obverse image 1m and the opposed object image 4m can be precisely aligned corresponding to the occlusion height VD as they are aligned with respect to the matching point.

When the virtual artificial tooth 220m is virtually arranged on the outer side of the virtual gum base 210m according to the occlusion height VD in step S20, the virtual artificial tooth 220m protrudes from the outer surface of the virtual gum base 210m, A plurality of engaging projections 212m are arranged in a superposed manner along the teeth 220m. The virtual artificial tooth 220m may be formed with an engaging groove which is formed with the outer surface of the engaging protrusion 212m.

In detail, the engaging protrusion 212m is set to a size that is accommodated inside the outer surface profile of the virtual artificial tooth 220m, with reference to the center point of each end surface of the virtual artificial tooth 220m. The virtual gum base 210m and the end of the engaging protrusion 212m are integrally connected to each other to obtain three-dimensional design information of the artificial gum 210.

In addition, the virtual protruding tooth 212m can be fixedly engaged with the engaging groove as the solid space of the engaging protrusion 212m is erased and the inner surface of the virtual protruding tooth 220m is set as the engaging groove. At this time, the opening side of the coupling groove may be set to a shape corresponding to an outer surface profile to which the engaging protrusion 212m and the outer surface of the virtual gum base 210m are connected.

That is, the artificial abdomen 220 is made of a zirconia or ceramic material having strength and color similar to natural teeth, and the artificial gum 210 is lightweight but minimizes the foreign body feeling and pressure feeling when the artificial abdomen 220 is installed on the gum base body 1. [ And is made of a synthetic resin material. As the engaging protrusion 212 protruding upward from the artificial gum 210 is inserted into the engaging recess 221 formed inside the artificial abutment 220 and fixed by an adhesive agent, A denture base 230 having a similar outer shape can be manufactured.

Further, the artificial teeth 220 may be individually manufactured and fixed to the artificial gingiva 210. As a result, the entire replacement period of the dentures 200 can be prolonged, and the maintenance performance can be remarkably improved because individual artificial teeth can be individually replaced and repaired easily.

Here, the artificial gum 210 may be further formed with a locking protrusion 213 which can support the lower end side outer surface of the artificial tooth 220. Since the artificial abdomen 220 is inserted into the engaging and supporting groove 216 formed on the inner surface between the engaging protrusion 212 and the engaging protrusion 213, the fixing force is improved, Similar aesthetics can be provided.

In addition, the upper surface of the artificial abutment 220 can minimize the burden on the jaw joints or gums during occlusion or chewing as the chewing surface portion 222 is formed based on the chewing surface shape of the cheek tooth.

When the reinforcement 240 is designed to be three-dimensionally designed, the reinforcing portion 240 is formed between the reinforcement 240 and the reinforcing coupling groove 217 so that the resin adhesive r, which provides a fixing force, It is preferable that a plurality of treads 241 are set.

Here, the ridge 241 may be formed to penetrate in the thickness direction of the reinforcing portion 240, or may be formed as a groove on the outer surface side of the reinforcing portion 240. The resin adhesive r is applied to the outer surface of the reinforcing portion 240 or the inner surface of the reinforcing coupling groove 217. The reinforcing portion 240 is inserted into the reinforcing coupling groove 217, And is pushed toward the inside of the tread 241 while being pressed. At this time, as the contact area of the resin adhesive r is increased by the tread 241, the reinforcing portion 240 can be more firmly fixed to the reinforcing coupling groove 217. In addition, as the resin adhesive r is filled in the gaps that may occur between the reinforcing portion 240 and the reinforcing coupling groove 217, the reinforcing portion 240 can be prevented from swinging and separating as it is hardened .

When the ridge 241 is formed in the thickness direction of the reinforcing portion 240, the resin adhesive r is moved to the inner surface side of the reinforcing portion 240 through the ridge 241 . When the denture 200 is installed on the gum base body 1 before the resin adhesive r is fully cured, the denture 200 is generated between the inner surface of the reinforcing portion 240 and the outer surface of the gum base body 1 May be corrected by the resin adhesive (r). Therefore, since the denture 200 is installed more precisely on the gingival sagittal body 1, the sense of foreign body and discomfort during occlusion or chewing can be significantly reduced.

When the reinforcing portion 240 is three-dimensionally designed, the engaging protrusions 217a and the engaging groove portions 242 which are engaged with each other at the opposed side portions of the reinforcing portion 240 and the reinforcing fitting groove portion 217 are further set . That is, when the reinforcing portion 240 is inserted into the reinforcing coupling groove 217, the locking protrusion 217a is engaged with the locking groove 242, The state of being inserted into the reinforced cogging groove 217 can be restrained. Therefore, the reinforcing portion 240 can be prevented from being detached from the reinforcing coupling groove 217 while the resin adhesive (r) is cured. Even if there is no separate jig means for fixing the state where the reinforcing portion 240 is coupled to the reinforcing coupling groove 217, the inner surface of the reinforcing portion 240 and the coupling groove 211 may have a continuous profile And the combined state can be maintained.

Furthermore, the reinforcing coupling groove 217 may be formed with an extension protrusion inserted into the ridge 241. The reinforcing part 240 may be inserted into the reinforcing coupling groove 217 as the extension protrusion is inserted into the tread 241.

Accordingly, the present invention can be applied to the overall design / manufacture of the reinforcement 240 coupled to the inner surface of the denture base 230 and the dentile base 230 based on the scanning image 6b obtained for the interior of the oral cavity. The process proceeds simultaneously. Thus, a high-precision denture 200 that is precisely matched to the target malocclusion can be designed and manufactured.

Design information of the reinforcing coupling groove 217 in which the reinforcing portion 240 and the reinforcing portion 240 are formed is determined by the design information of the gingival image body 1m included in the scanning image 6b, Is obtained at a time from the shape information of the overlapping area (e) which is set based on the base 210m. Thus, the design and manufacturing convenience of the denture 200 is improved, and the coupling accuracy of the reinforcing portion 240 and the reinforcing coupling groove 217 can be remarkably improved.

At this time, the reinforcing portion 240 is made of high strength synthetic resin material, so that even if the denture 200 is made thin and lightweight, breakage due to impact and pressure can be prevented. Since the reinforcement 240, the artificial gum 210 and the resin adhesive r for fixing the reinforcement 240 are substantially made of a synthetic resin material, the bonding strength between the isotropic materials is increased and the durability of the denture 200 is remarkably improved Can be improved.

When the reinforcing portion 240 is formed in the reinforcing coupling groove 217, the inner surface of the reinforcing portion 240 and the inner surface of the denture 200 are formed in a substantially continuous profile, Since the external surface profile of the mouthpiece 1 is set on the basis of the external profile of the mouthpiece 1, the feeling of foreign body or discomfort can be significantly reduced.

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And such modifications are within the scope of the present invention.

200: Denture 210: artificial gingiva
217: reinforced fitting groove portion 220: artificial abutment
230: Denture base 240:
6b: Scanning image e: overlap area

Claims (6)

A first step of obtaining a scanning image of a gingival opponent corresponding to a target toothache;
Wherein the virtual gum base and the virtual artificial tooth corresponding to a predetermined occlusion height are set such that an inner surface of the virtual gum base is set to coincide with an outer surface of a gingival image body included in the scanning image, A second step of setting an overlapping area between the outer surfaces of the substrate; And
Dimensional design and manufacture of the denture base on the basis of the inner and outer surface profile of the overlapping area and the virtual gum base on which the overlapping area is erased and the reinforcing joint part is set on the inner surface, And a third step in which the reinforcing portion is joined to the reinforced cementing groove to produce a denture. The method according to claim 1,
In the first step, the scanning image is obtained by pulling and pushing the soft tissue inside the oral cavity such that the entire outer surface of the gingival opposed body is exposed by a pulling device that is elastically deformed corresponding to the arcuate profile of the gingival opposed body,
Wherein, in the second step, the occlusion height is calculated by adjusting the thickness of the occlusal alignment base disposed between the object jaw and the mating occlusal side occluded with the target occlusal joint according to the grip sensitivity. 3. The method of claim 2,
Wherein in the first step, a confrontation scanning image of the opposing object corresponding to the opposing dental appliance is obtained,
In the second step, the gingival bag image and the opposing object image included in the opposing scanning image are aligned corresponding to the occlusion height, and the virtual artificial tooth is placed in the occlusal space between the virtual gum base and the opposing object image Further comprising a plurality of engaging protrusions projecting from an outer surface of the virtual gum base and arranged along the virtual artificial teeth,
Wherein, in the third step, the virtual artificial tooth is provided with an engaging groove which is formed with an outer surface of the engaging projection. The method according to claim 1,
In the third step, the inner surface of the reinforcing portion corresponds to the outer surface profile of the gingival saddle, and the inner surface of the reinforcing trough is designed to correspond to the outer surface profile of the reinforcing portion,
Wherein a plurality of treads are set in the reinforcing portion so that the resin adhesive applied between the reinforcing portion and the reinforcing fitting groove portion is through-cured. The method according to claim 1,
Wherein the engaging protrusions and the engaging recessed portions are further secured to the opposite side surfaces of the reinforcing portion and the reinforcing recessed portion in the third step. An imaging device for acquiring a scanning image of a gingival opacity corresponding to a target toothache while a traction device for pulling the soft tissue is installed inside the oral cavity;
Wherein a virtual gingival base is virtually disposed on a gingival image body image included in the scanning image and a virtual artificial tooth is virtually arranged corresponding to a predetermined bite height on the virtual gingival base, Wherein the virtual gum base and the virtual artificial tooth having the reinforcing groove formed on the inner surface of the reinforcing portion are erected on the basis of the inner and outer surface profile of the overlapping region set to a predetermined thickness between the outer surface of the virtual gum base and the outer surface of the base, A planner for three-dimensionally designing the denture base; And
And a manufacturing apparatus for manufacturing the designed reinforcement portion and the denture base.
KR1020170098996A 2017-08-04 2017-08-04 method for manufacturing denture and system thereof KR101872448B1 (en)

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