JP2019088606A - Manufacturing method of dentures - Google Patents

Abstract

To provide a manufacturing method of dentures which reduces dissatisfaction of a patient.SOLUTION: In a denture forming process for practice in the manufacturing method of dentures, dentures for practice are formed including an upper jaw denture base, an upper jaw artificial tooth part, a lower jaw denture base, and a lower jaw artificial tooth part. In an inner valve maintenance process 172, in order to make a contact area larger or to make a standard deviation of a contact pressure smaller, an upper jaw inner valve or a lower jaw inner valve is machined. In an outer valve maintenance process 173, in order to make a contact area of an upper jaw outer valve with the cheek of a human body larger or to make a standard deviation of a contact pressure smaller, the upper jaw outer valve or a lower jaw outer valve is machined. In a final denture forming process, on the basis of a denture for practice via the inner valve maintenance process 172 and the outer valve maintenance process 173, a final denture is formed.SELECTED DRAWING: Figure 14

Description

  The present invention relates to a method of manufacturing a denture.

  Heretofore, as described in Patent Document 1, there is known a therapeutic denture used for treatment prior to manufacture of a final denture that patients use daily.

Patent No. 5426957 gazette

  As in Patent Document 1, in the treatment denture, a more functional form of denture can be manufactured by sequentially adjusting. However, even with adjustments, in the final denture, patients often complain of chewing, swallowing and articulatory movements. In order to solve the patient's dissatisfaction, a proper adjustment process requires a high level of skill.

  The present invention has been made in view of these points, and an object thereof is to provide a method for producing a denture in which patient's dissatisfaction is reduced.

The method for producing a denture according to the present invention includes a practice denture forming step (14), an inner valve maintaining step (172), an outer valve maintaining step (173) and a final denture forming step (20).
In the practice denture formation process, a practice denture (30) having an upper denture base (31), an upper artificial tooth portion (32), a lower denture base (41) and a lower artificial tooth portion (42) is formed.
The maxillary denture base can be adsorbed to the maxilla (64) in the oral cavity (63) of the human body (60).
The maxillary artificial teeth are provided on the maxillary denture base and include artificial teeth.
The lower denture base can be adsorbed to the lower jaw (65) in the oral cavity of the human body.
The lower jaw artificial tooth part is provided in the lower jaw denture base, and includes an artificial tooth.

In the inner valve maintenance step, the upper inner valve is processed so as to increase the contact area between the upper inner valve (36) and the upper jaw, or to decrease the standard deviation of the contact pressure between the upper inner valve and the upper jaw. . Alternatively, the mandibular inner valve is processed so as to increase the contact area between the mandibular inner valve (46) and the mandible or to reduce the standard deviation of the contact pressure between the mandibular inner valve and the mandible.
The maxillary inner valve is a portion of the maxillary denture base where the maxillary denture base contacts the maxilla when the practice denture is put in the oral cavity.
The mandibular inner valve is a part of the mandible denture base in which the mandible denture base contacts the mandible when the practice denture is put in the oral cavity.

In the outer valve maintenance step, the upper jaw outer side (37) and the upper jaw outer side so that the contact area between the upper jaw outer valve and the human cheek becomes smaller. Process the valve. Or, the mandibular outer side such that the contact area between the mandibular outer valve (47) and the human cheek and tongue is increased, or the standard deviation of the contact pressure between the mandibular outer valve and the human cheek and tongue is decreased. Process the valve.
The maxillary outer valve is a part of the maxillary denture base where the maxillary denture base contacts the cheeks of the human body when the practice denture is put in the oral cavity.
The mandibular outer valve is a part of the mandible denture base in which the mandible denture base contacts the cheeks and tongue of the human body when the practice denture is put in the oral cavity.
In the final denture formation step, a final denture (75) is formed based on the practice denture via the inner valve maintenance step and the outer valve maintenance step.

  The inner valve holding step and the outer valve holding step improve the holding force and the supporting force between the training denture and the upper and lower jaws at rest and exercise of the human body. Since the final denture is formed on the basis of the practice dentures having improved holding power and supporting power, the holding power and the supporting power are also improved when the final denture is used. As maintenance and supportability is improved, perceptual information is input to the cerebrum of the human body and easily transmitted to the tongue muscle motor area of the cerebrum or the buccal muscle orexterior muscle motor area. Therefore, it is easy to adjust the tongue muscle or buccal muscle orexcisor muscle movement. As a result, the tongue muscle, buccal muscle or orbicularis muscle can reconstruct a neutral equilibrium relationship. Therefore, it becomes comfortable for the human body by chewing, swallowing or articulation of the human body, and the dissatisfaction of the human body is alleviated.

The schematic diagram when the last denture formed by the manufacturing method of the denture of one Example of this invention is used for a human body. The flowchart of the manufacturing method of the denture of one Example of this invention. The flowchart of the impression acquisition process of the manufacturing method of the denture of one Example of this invention. Sectional drawing for demonstrating the work model formed by the manufacturing method of the denture of one Example of this invention. The flowchart of the occlusal acquisition process of the manufacturing method of the denture of one Example of this invention. The schematic diagram for demonstrating the occlusal floor formation process of the manufacturing method of the denture of one Example of this invention. The schematic diagram for demonstrating the occlusal height setting process of the manufacturing method of the denture of one Example of this invention. The schematic diagram of the practice denture formed by the manufacturing method of the denture of one Example of this invention The schematic diagram of the upper jaw denture base of the practice denture formed by the manufacturing method of the denture of one Example of this invention. The schematic diagram of the lower jaw denture base of the practice denture formed by the manufacturing method of the denture of one Example of this invention. The schematic diagram for demonstrating the overjet and overbite of the practice denture formed by the manufacturing method of the denture of one Example of this invention. The flowchart of the practice denture trial suitable process of the manufacturing method of the denture of one Example of this invention. The flowchart of the practice dentures completion process of the manufacturing method of the dentures of one Example of this invention. The schematic diagram for demonstrating the practice dentures confirmation process of the manufacturing method of the dentures of one Example of this invention. The flowchart of the function taking-in process of the manufacturing method of the denture of one Example of this invention. The schematic diagram for demonstrating the inner side valve maintenance process of the manufacturing method of the denture of one Example of this invention. The schematic diagram of the last denture formed of the last denture completion process of the manufacturing method of the denture of one Example of this invention.

(One embodiment)
Hereinafter, a method of manufacturing a denture according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the last denture 75 as a denture which the human body 60 uses regularly is used to compensate for the tooth which the human body 60 has lost.

The human body 60 has an upper lip 61, a lower lip 62, an oral cavity 63, an upper jaw 64, a lower jaw 65, an oral vestibule 66, a denture base border 67 and a band 68.
The oral vestibule 66 is a space defined between the inner surface of the upper lip 61 or the lower lip 62, the inner surface of the cheek, and the teeth.
The denture base edge 67 is an inner surface in the oral cavity 63 located in the oral cavity vestibule 66.

  The small band 68 is a fold provided between the gum or the inner surface of the upper lip 61 or the lower lip 62 or the inner surface of the cheek. Note that the zonules 68 include upper lip zonules, lower lip zonules, buccal zonules or lingual zonules. Depending on the human body 60, a plurality of small bands 68 may be provided or may not be present in the human body 60. In the figure, in order to clarify the whereabouts of the zonule 68, the zonule 68 is exaggerated and described.

  As shown in the flowchart of FIG. 2, the method of manufacturing dentures in one embodiment includes an impression acquiring step 11, a work model forming step 12, an occlusal acquiring step 13 and a practice denture forming step 14. In addition, the method for manufacturing a denture 10 includes a trial denture fitting step 15, a practice denture completion step 16, a function taking-in step 17, and a function judging step 18. Furthermore, the method 10 of producing a denture includes a copy denture forming step 19, a final impression adjusting step 20, a final denture forming step 21, a final denture trial fitting step 22 and a final denture completion step 23.

In the impression obtaining step 11, the impression material is used to take a mold in the oral cavity 63 of the human body 60. In the impression obtaining step 11, an impression for creating the training dentures 30 and the final dentures 75 as treatment dentures convenient for the body of the human body 60, in particular, the oral cavity 63, is taken.
Therefore, as shown in the flowchart of FIG. 3, the impression acquisition process 11 includes a strain relaxation process 111, a tissue state grasping process 112, an impression material selection process 113, a molding process 114 and an impression material deformation relaxation process 115.

  In the strain relief process 111, the strain on the human body 60 is released to relax the human body 60. When a force is applied to the human body 60 due to tension or the like, the vicinity of the oral vestibule 66 may be tensed, and the form of the oral vestibule 66 may change. In this state, the practice denture 30 and the final denture 75 are affected. For this reason, when obtaining an impression of the human body 60, it is necessary to ease the tension of the human body 60 and have the human body 60 relax.

  In the tissue condition grasping step 112, how much elasticity is grasped by palpating soft tissue which is a relatively soft part of the mouth of the human body 60 and hard tissue which is a relatively hard part. Also, at this time, it is preferable to remove the human body 60 that used a defective or old denture from 24 hours before, except when eating.

  In the impression material selection step 113, an alginate impression material is selected from among a wide variety of impression materials, and molding in the oral cavity 63 of the human body 60 is performed. In addition, you may use a plaster impression material or a Eugenol impression material. An impression material that minimizes soft tissue deformation is preferred.

  In the molding step 114, the molds of the upper jaw 64 and the lower jaw 65 in the oral cavity 63 are formed while confirming the pressure applied to the impression material and the opening state of the human body 60. The posture of the human body 60 is important. It is important to check whether the human body 60 is not folded, not bent, or sitting deep in a chair or the like.

  In the impression material deformation reducing process 115, the thickness of the impression material is kept constant in order to minimize deformation of the impression material. In the present specification, “constant” includes a common sense error range. Take impressions using each tray. Also, until the impression material hardens, the impression material is held with a minimum force that does not move. Furthermore, when removing a hardened impression material, it carries out, blowing air.

  As shown in FIG. 4, in the working model forming step 12, gypsum is provided on a mold formed through the impression obtaining step 11 to form a working model 80. In the work model formation step 12, a part that is easy to deform is reinforced, and boxing is performed along the outer periphery of the impression, creating a box frame. Further, the working model 80 is formed at a predetermined mixing ratio of gypsum. In addition, in the working model formation step 12, the plaster is kneaded and arranged so that air bubbles do not enter. Furthermore, in the working model forming step 12, the environment such as temperature and humidity in the oral cavity 63 is made the same to harden the gypsum.

  The working model is a surface located at a first distance L1 which is a predetermined distance from the deepest portion A of the oral vestibule at the upper incisor equivalent portion and a second distance L2 which is a predetermined distance from the deepest portion H of the left and right wing projectile jaw The first base surface S1 of 80 is used. The working model 80 is a surface located at a third distance L3 which is a predetermined distance from the deepest portion B of the oral vestibule at the portion corresponding to the lower incisor and a fourth distance L4 which is a predetermined distance from the uppermost R of the retromolar pad. To the second base surface S2.

  The work model 80 is finished so that the fifth distance L5 which is the distance from the first base surface S1 to the second base surface S2 becomes a predetermined value. Also, the side walls of the working model 80 are finished to be vertical. In the present specification, "vertical" includes a common sense error range. The retromolar pad is a portion of the working model 80 corresponding to the ridge present behind the lowermost molar. The first distance L1 is preferably 8 mm, and the second distance L2 is preferably 25 mm. The third distance L3 is preferably 12 mm, and the fourth distance L4 is preferably 30 mm. The fifth distance L5 is preferably 60 mm.

In the occlusal acquisition step 13, a work model 80 is formed, the position of the lower jaw 65 relative to the upper jaw 64 is three-dimensionally grasped, and the spatial volume in the oral cavity 63 of the human body 60 is grasped.
As shown in the flowchart of FIG. 5, the occlusal acquisition step 13 includes an occlusal floor forming step 131, an occlusal floor trial fitting step 132, an occlusal plane confirmation step 133 and an upper and lower jaw confirmation step 134. Further, the occlusal acquisition step 13 includes an occlusal height setting step 135, a fixing step 136, a lip recording step 137, an artificial tooth selection step 138, and a removal step 139.

As shown in FIG. 6, in the occlusal floor forming step 131, an upper jaw occlusal floor 81 and a mandibular occlusal floor 82 having a base floor and a wax embankment are formed using a conditioning wax based on the working model 80.
In the occlusal floor trial step 132, the bite and the like of the maxillary occlusal floor 81 and the mandibular occlusal floor 82 are confirmed and tested. Also, in the occlusal bed trial process 132, it is confirmed whether there is no pain such as neuralgia, it is stable, or it does not immediately come off.

In the occlusal plane confirmation step 133, the occlusal plane which is a plane determined by the contact point of the incisal edge of the lower central incisor of the lower jaw and the three points of the left and right lower second molars and the distal buccal cusp .
In the upper and lower jaw confirmation step 134, the upper jaw lip support for supporting the upper lip 61 from the back side is confirmed. Further, the maxillary occlusal floor 81 and the mandibular occlusal floor 82 are attached to the human body 60, and the distance from the lower nasal point to the man at the time when the upper lip 61 and the lower lip 62 of the human body 60 are closed is confirmed. When the human body 60 is a male, this distance is adjusted to be about 70 mm. Also, when the human body 60 is a woman, this distance is adjusted to be about 68 mm.

  In the occlusal height setting step 135, the maxillary occlusal floor 81 and the mandibular occlusal floor 82 are attached to the human body 60, and when the human body 60 is lightly engaged, it is checked whether there is a gap between the upper and lower occlusal floors. In the bite height setting step 135, the wax wax of the lower and lower sides is formed into a triangle having a height of about 1 mm and the column height is formed into a triangular column of about 15 to 20 mm. Perform occlusal capture.

As shown in FIG. 7, the distance from the center of the eye 69 of the human body 60 to the connecting portion 70 of the upper lip 61 and the lower lip 62 is taken as a first Willis distance Lw1. A second Willis distance Lw2 which is a distance from the in-nose portion 71 of the human body 60 to the end portion 72 of the lower jaw 65 is set.
In the occlusal height setting step 135, an occlusal height which is a distance from the upper jaw 64 to the lower jaw 65 when the human body 60 occludes is set based on the first Willis distance Lw1 and the second Willis distance Lw2. In the occlusal height setting step 135 of this embodiment, the occlusal height is set using the Willis method so that the first Willis distance Lw1 and the second Willis distance Lw2 coincide with each other. The occlusal height may be determined using the McGee method, the Bruno method or the Buyanov method.

In the fixing step 136, a silicone-based tool material is used to fix the position so as not to shift.
In the lip recording step 137, the upper lip 61, the lower lip 62, the buccal mucosa and the lip closing line are recorded.
In the artificial tooth selection step 138, an artificial tooth is selected based on the upper central incisor.
In the taking-out step 139, the maxillary occlusal floor 81 and the mandibular occlusal floor 82 are lumped out and taken out.

In the practice denture formation step 14, a practice denture 30 as a treatment denture is formed using the adjustment wax.
As shown in FIG. 8, the training denture 30 includes an upper denture base 31, an upper artificial tooth portion 32, a lower denture base 41, and a lower artificial tooth portion 42. In the figure, in order to make the explanation easy to understand, the practice dentures 30 are described which are passed through the practice denture completion process 16 described later.
The upper denture base 31 can be attached to the upper jaw 64 and can be adsorbed to the upper jaw 64. The artificial tooth is implanted in the maxillary denture base 31, and a force at the time of occlusion can be applied to the mucous membrane in the oral cavity 63.

As shown in FIG. 9, the maxillary denture base 31 has a maxillary denture base mucous surface 35, an maxillary inner valve 36 and an maxillary outer valve 37. FIG. 9 describes the bottom view of the maxillary denture base 31 and the top view of the maxillary denture base 31 from the top of the paper surface.
The upper denture base mucous membrane surface 35 is a surface to which the mucous membrane in the oral cavity 63 adheres when the upper jaw 64 is contacted in the oral cavity 63.
The maxillary inner valve 36 is a portion of the maxillary denture base 31 that contacts the maxilla 64 of the human body 60 when the training denture 30 is placed in the oral cavity 63.
The maxillary outer valve 37 is a portion of the maxillary denture base 31 that contacts the inner surface of the cheek of the human body 60 when the training denture 30 is placed in the oral cavity 63. The maxillary inner valve 36 and the maxillary outer valve 37 support the maxillary denture base 31 and the maxilla 64.

The maxillary artificial tooth portion 32 is provided on the maxillary denture base 31 and includes an maxillary anterior teeth 33 and maxillary back teeth 34 which are artificial teeth.
The maxillary anterior teeth 33 are artificial teeth on the front side of the maxillary denture base 31 with respect to the inside of the oral cavity 63, and the maxillary back teeth 34 are artificial teeth on the back side of the maxillary denture base 31 with respect to the inside of the oral cavity 63.
The upper front teeth 33 are formed of a hard resin which is a relatively hard resin, and are formed corresponding to the shape of the teeth of the human body 60.
The maxillary back teeth 34 are formed of ceramic teeth, and are formed corresponding to the shape of the teeth of the human body 60. Porcelain teeth are artificial teeth made of porcelain, and are relatively excellent in hardness and durability.

  The lower denture base 41 can be attached to the lower jaw 65 and can be adsorbed to the lower jaw 65. Similarly to the maxillary denture base 31, the artificial teeth are implanted in the lower denture base 41, and it is possible to apply a force at the time of occlusion to the mucous membrane in the oral cavity 63.

As shown in FIG. 10, the lower denture base 41 has a lower denture base mucous surface 45, a lower mandibular valve 46 and a lower mandibular valve 47. FIG. 10 describes the top view of the lower denture base 41 and the bottom view of the lower denture base 41 from the top of the page.
The lower denture base mucous surface 45 is a surface to which the mucous membrane in the oral cavity 63 adheres when in contact with the inner surface of the oral cavity 63, similarly to the maxillary denture base mucous surface 35.
The mandibular inner valve 46 is a portion of the mandibular denture base 41 that contacts the mandible 65 of the human body 60 when the training denture 30 is placed in the oral cavity 63.
The mandibular outer valve 47 is a portion of the mandibular denture base 41 that contacts the inner surface of the cheek of the human body 60 and the tongue when the training denture 30 is placed in the oral cavity 63.

The mandibular artificial tooth portion 42 is provided on the mandibular denture base 41 and includes a mandibular anterior tooth 43 and a mandibular back tooth 44 which are artificial teeth.
The lower front teeth 43 are artificial teeth on the front side of the lower denture base 41 with respect to the inside of the oral cavity 63, and the lower back teeth 44 are artificial teeth on the back side of the lower denture base 41 with respect to the inside of the oral cavity 63.
The mandibular anterior teeth 43 are formed of a relatively hard resin, similar to the maxillary anterior teeth 33.
The lower back tooth 44 is formed of talc and a synthetic resin as described later.

  As shown in FIG. 11, the distance from the tip end portion 331 of the upper front teeth 33 to the tip end portion 431 of the lower front teeth 43 in the front-rear direction of the human body 60 is taken as an overjet Jo. The distance from the tip end portion 331 of the upper front teeth 33 to the tip end portion 431 of the lower front teeth 43 in the height direction or the vertical direction of the human body 60 is taken as an overbite Bo. The practice denture 30 is formed so that the over jet Jo is 0.8 mm or more and 1.2 mm or less. Further, the training denture 30 is formed so that the overbite Bo is 0.1 mm or more and 1.0 mm or less. In the figure, the maxillary anterior teeth 33 and the mandibular anterior teeth 43 are described in an exaggerated manner so that the overjet Jo and the overbite Bo become clear.

  As shown in the flowchart of FIG. 12, the trial dental prostheses trial process 15 has upper and lower conformity check processes 151, a midline check process 152, an occlusal condition check process 153 and a mouse volume check process 154. I do.

In the upper and lower fitting state confirmation step 151, when the training denture 30 is placed in the oral cavity 63, the matching state between the training denture 30 and the human body 60 is confirmed. The upper denture base 31 and the lower denture base 41 of the training denture 30 via the training denture trial process 15 are changed to a synthetic resin.
In the midline confirmation step 152, whether or not the upper artificial tooth center O_upp which is the center of the upper artificial tooth 32, the lower artificial tooth center O_low which is the center of the lower artificial tooth 42, and the face center of the human body 60 coincide Confirm. In the present specification, "coincidence" includes a common sense error range.

In the occlusal state confirmation step 153, the occlusal state of the upper jaw artificial teeth 32 and the lower jaw artificial teeth 42 is confirmed.
In the mouse volume confirmation step 154, it is confirmed whether the training denture 30 enters the oral cavity 63 or not.

  As shown in the flowchart of FIG. 13, the practice denture perfecting process 16 has a colored resin changing process 161, a transparent resin changing process 162, an anterior teeth changing process 163, a molar part forming process 164, and a resin hardening liquid applying process 165.

In the colored resin changing step 161, a part of the denture base is changed to a colored resin. In the colored resin changing step 161 of the present embodiment, the resin is changed to a pink resin.
In the transparent resin change process 162, the denture base of the part which does not affect aesthetically, ie, the denture base of the part which can not be seen from the outside when the human body 60 opens a mouth, is changed into transparent resin.

In the front teeth changing step 163, the upper front teeth 33 and the lower front teeth 43 are changed to artificial teeth containing relatively hard resin.
In the molar formation process 164, the lower artificial tooth 42 is formed such that the lower back tooth 44 has a flat surface 48. In addition, the lower back tooth 44 contains talc powder and synthetic resin powder such that the weight ratio of the synthetic resin powder to talc powder is 40% to 50%.

  In the resin hardening liquid application process 165, the resin hardening liquid having a thickness of 0.6 mm to 1.3 mm is spread on the lower denture base mucous surface 45. This facilitates the function taking-in step 17 of the next step. The resin curing liquid used in the resin curing liquid application process 165 contains a resin and is a liquid that can be cured by pressure. Moreover, it is preferable that the resin hardening liquid is spread about 24 hours before the human body 60 uses the practice denture 30. When the training denture 30 is used within 24 hours after the resin curing liquid is applied, the resin curing liquid may become too soft. When the training denture 30 is used after 24 hours have passed since the resin curing liquid is applied, the resin curing liquid may become too hard.

  As shown in the flowchart of FIG. 14, the function taking-in step 17 has a practice denture confirmation step 171, an inner valve maintenance step 172, an outer valve maintenance step 173 and an zonular part formation step 174. Capture features In addition, in the function taking-in step 17, it is preferable to perform the above four steps simultaneously in parallel while removing pain.

  As shown in FIG. 15, in the practice denture check process 171, when the practice denture 30 is placed in the oral cavity 63 of the human body 60, the portion pressed by the practice denture 30 is checked. In the practice denture confirmation step 171, the denture base edge length Ls, which is the length of the denture base edge 67, and the depth Ds of the oral vestibule 66 of the human body 60 are measured.

In the inner valve maintenance step 172, the mandibular inner valve 46 is processed so as to increase the contact area between the mandibular inner valve 46 and the mandible 65. Alternatively, the mandibular inner valve 46 is processed so that the standard deviation of the contact pressure between the mandibular inner valve 46 and the mandible 65 is reduced. The standard deviation of the contact pressure is calculated from the distribution of the contact pressure. In addition, it is not limited to the standard deviation of a contact pressure, You may use dispersion | distribution etc. of a contact pressure.
As shown in FIG. 16, the periphery of the lower jaw inner valve 46 can be a knife or the like to form an inner valve groove 49. In the drawing, in order to clarify the location of the inner valve groove 49, the inner valve groove 49 is described by a dot pattern, and the lower back tooth 44 is omitted.

  Next, the inner valve groove 49 and the periphery of the inner valve groove 49 are further ground and polished to clean the surface. Further, by mixing the powder and the liquid at normal temperature, an appropriate amount of immediate polymerization resin, which is a resin to be polymerized, is added to the inner valve groove 49. Before the immediate polymerization resin cures, it is mounted in the oral cavity 63. After mounting in the oral cavity 63, the immediate polymerization resin is cured while being lightly pressed toward the jaw ridge. After curing, they are taken out of the oral cavity 63 and subjected to form correction. Further, the resin hardening solution is added so as to have a thickness of about 0.2 to 0.3 mm in a range of about 2 mm from the edge of the lower denture base 41 to the lower denture base mucous surface 45. When the lower denture base 41 is put into the oral cavity 63 after the addition, the lower denture base 41 is attached so as not to be pressed by the mucous membrane.

  As a result, the mandibular inner valve 46 and the mandible 65 can easily contact. Also, the mandibular inner valve 46 is reinforced. As a result, the contact area is increased, the contact is likely to be uniform, and the standard deviation of the contact pressure is reduced. In addition, gargling of the human body 60 is prohibited until the resin hardening liquid hardens. In addition, it is preferable to confirm whether the occlusion is stable or the swallowing has been done while talking with the human body 60.

Further, in the inner valve maintenance step 172, the upper jaw inner valve 36 is processed so that the contact area between the upper jaw inner valve 36 and the upper jaw 64 of the human body 60 is increased, as in the lower jaw inner valve 46. Alternatively, the upper jaw inner valve 36 is processed so that the standard deviation of the contact pressure between the upper jaw inner valve 36 and the upper jaw 64 of the human body 60 is reduced.
At the inner valve maintenance step 172 at the maxillary inner valve 36, the maxillary inner valve 36 is first applied with a resin hardening liquid, if necessary. When the resin curing liquid is excessively applied in the inner valve maintenance step 172, the resin curing liquid may be scraped.

In the outer valve maintenance step 173, the upper jaw outer valve 37 is processed so that the contact area between the upper jaw outer valve 37 and the inner surface of the cheek of the human body 60 is increased. Alternatively, the upper jaw outer valve 37 is processed so that the standard deviation of the contact pressure between the upper jaw outer valve 37 and the inner surface of the cheek of the human body 60 is reduced.
Also, in the outer valve maintenance step 173, the mandibular outer valve 47 is processed so that the contact area between the mandibular outer valve 47 and the inner surface of the cheek of the human body 60 and the tongue is large. Alternatively, the mandibular outer valve 47 is processed so as to reduce the standard deviation of the contact pressure between the mandibular outer valve 47 and the inner surface of the cheek of the human body 60 and the tongue. In the outer valve maintenance step 173, the step is performed in the same manner as the maxillary inner valve 36 and the mandibular inner valve 46.

  Referring back to FIG. 8, in the zonule formation step 174, the zonules 50 are formed in the upper denture base 31 or the lower denture base 41 based on the number, location, and shape of the zonules 68. The small band portion 50 is formed in a shape along the small band 68. Further, the zonular portion 50 is formed based on the direction in which the zonule 68 of the human body 60 moves when the human body 60 moves the upper jaw 64 and the lower jaw 65. As a result, detachment of the training denture 30 and remaining of food are less likely to occur.

In the function determination step 18, when the practice denture 30 passed through the function take-in step 17 is used, it is confirmed whether the human body 60 is not dissatisfied with chewing, swallowing or articulation.
When the human body 60 feels dissatisfaction, the process returns to the function acquisition process 17.
When the human body 60 does not feel dissatisfaction, the process proceeds to a copy denter forming process 19.

  In the copy denture forming step 19, a copy denture which is a denture obtained by duplicating the practice denture 30 via the function taking-in step 17 is formed. Thereby, in order to confirm the information on the practice dentures 30, the practice dentures 30 can be deposited. Further, at this time, it is possible to avoid the state where nothing is attached to the human body 60. Furthermore, the practice denture 30 at this time is optimized with respect to the human body 60 by the function taking-in step 17, and the manufacture of the copy denture is simplified, and the occlusal acquisition can be easily performed.

  In the copy denture forming step 19, first, using a silicone impression material, an upper jaw mold or a lower jaw mold, an impression of one side of the practice denture 30 to be replicated is taken while minimizing deformation, 1 Form a silicone frame. At this time, although an alginate impression material may be used, it is preferable to use a silicone impression material because the shape accuracy with the training denture 30 is required.

  Second, using the silicone impression material, the impression on the other side of the practice denture 30 to be replicated is taken to form a second silicone frame corresponding to the first silicone frame. Further, when the first silicone frame and the second silicone frame are superimposed, a space corresponding to the shape of the copy denture is formed between the first silicone frame and the second silicone frame. Also, the first silicone frame and the second silicone frame have corresponding asperities and are provided with a wedge. As a result, when the first silicone frame and the second silicone frame are superimposed, positional deviation between the first silicone frame and the second silicone frame is less likely to occur.

  Third, an immediate polymerization resin is used to form a copy jaw by an erection method, which is between an artificial tooth and a denture base of the copy denture. In a state where the first silicone frame and the second silicone frame are superimposed, the immediate polymerization resin is injected into the space between the first silicone frame and the second silicone frame to cure the resin. At this time, it is preferable that the first silicone frame and the second silicone frame be fixed with non-adhesive rubber or the like so as not to float. In addition, if it fixes by an adhesive material, it will become difficult to remove a 1st silicone frame and a 2nd silicone frame. In this way, a copy denture is formed for the upper and lower jaw.

  In the final impression adjustment step 20, while using the mucous membrane adjusting material, a portion where material such as an undercut portion, which is a portion which comes in contact in the oral cavity 63 when removing it, is scraped off While making the thickness of 30 uniform, form an escape place for the final impression material. It is preferable that the mucous membrane regulator used in the final impression adjustment step 20 lasts for a long time in a bowl-like shape.

  In the final denture formation process 21, a final denture 75 is formed based on the finally adjusted training denture 30. Plaster plaster on the practice denture 30 and take a mold. The final denture 75 is formed using this mold, wax and artificial teeth. The artificial tooth is selected in color, shape and size based on the opinion of the human body 60.

In the final denture trial adaptation step 22, the final denture 75 is trialled.
As shown in FIG. 17, in the final denture completion step 23, the final denture 75 is finished such that the final denture 75 is substantially symmetrical with respect to the center of the final denture 75. The final denture 75 is completed.

[1] The inner valve maintenance step 172 and the outer valve maintenance step 173 improve the maintenance and support of the training denture 30 with the upper jaw 64 and the lower jaw 65 when the human body 60 is resting and exercising. The final denture 75 is formed on the basis of the practice denture 30 with improved maintenance and supporting power, and therefore, the maintenance and supporting power is also improved when the final denture 75 is used.

  The sense that the upper denture base mucous surface 35 and the maxillary artificial tooth 32 are in contact with each other and the sense that the lower denture base mucous surface 45 and the lower artificial tooth 42 are in contact because the maintenance ability and the supporting ability are improved. The human body 60 becomes easy to feel. This increases the sensitivity of the mucous membrane buccal and orbicularis mucous membrane tactile receptors and the intrinsic sensory receptor of the tongue muscle muscle mass. By increasing the sensitivity, perceptual information is input to the cerebrum of the human body 60 and is easily transmitted to the tongue muscle motor area or the buccal muscle orexterior muscle motor area. Therefore, it is easy to adjust the tongue muscle or buccal muscle orexcisor muscle movement. As a result, the tongue muscle, buccal muscle or orbicularis muscle can reconstruct a neutral equilibrium relationship. Therefore, the human body 60 can take in five senses, and the chewing, swallowing or articulation of the human body 60 becomes comfortable for the human body 60, and the dissatisfaction of the human body 60 is alleviated.

[2] In the zonule formation step 174, the zonule 50 is formed on the practice denture 30 based on the direction in which the zonule 68 of the human body 60 moves when the human body 60 moves the mouth. Thereby, when the final denture 75 is used, the pain is eliminated and the discomfort of the human body 60 is reduced. In addition, chronic inflammation is improved. In addition, the perception of the vaginal mucosa from tactile receptors is increased. This increased perception facilitates the input of sensory information into the cerebrum and brainstem. For this reason, it becomes easy to adjust the masticatory muscles.

[3] In the occlusal diameter setting step 135, the occlusal diameter is determined such that the first Willis distance Lw1 and the second Willis distance Lw2 coincide with each other. Thereby, the occlusal diameter is likely to be an optimal value. When the occlusal diameter becomes an optimal value, muscle groups such as masseter muscle are likely to contract isometrically. In addition, the intrinsic sensory receptor of the muscle mass of the masseter muscle can easily sense the degree of muscle tension. Perceptual information can be easily input to the cerebrum and brainstem. For this reason, isometric contraction of the masseter muscle is likely to be readjusted.

[4] Having the flat surface 48 on the lower back tooth 44 makes it independent of the occlusal surface form of the artificial tooth, enables the inherent jaw movement of the human body 60, and facilitates the jaw movement of the human body 60.
[5] In the resin hardening solution applying step 165, the resin hardening solution is spread on the lower denture base mucous surface 45. Since it is necessary to process the lower denture base 41 in many cases, the inner valve maintenance step 172 and the outer valve maintenance step 173 can be easily performed by putting a resin hardening solution in advance.

[6] The training denture 30 is formed such that the overjet Jo is 0.8 mm or more and 1.2 mm or less. Further, the training denture 30 is formed so that the overbite Bo is 0.1 mm or more and 1.0 mm or less. Thereby, the human body 60 can easily perform jaw movement.
When the overjet Jo is less than 0.8 mm or the overbite Bo is less than 0.1 mm, the appearance of the human body 60 is degraded. When the overjet Jo exceeds 1.2 mm or the overbite Bo exceeds 1.0 mm, the upper artificial teeth 32 and the lower artificial teeth 42 easily interfere with each other, and the human body 60 is likely to experience discomfort.

[7] In the practice denture perfecting step 16, the oral mucous membrane is visualized by the transparent resin changing step 162, and the pressing site and the like can be easily confirmed.
[8] The lower back tooth 44 contains talc powder and synthetic resin powder such that the weight ratio of synthetic resin powder to talc powder is 40% to 50%. As a result, the lower back tooth 44 becomes appropriate in hardness, the human body 60 becomes easy to use, and stability of the jaw position, which is the three-dimensional position of the lower jaw 65 with respect to the upper jaw 64, is established early.
[9] In the front teeth changing step 163, the upper front teeth 33 and the lower front teeth 43 are changed to artificial teeth containing relatively hard resin. This facilitates shape correction of the upper front teeth 33 and the lower front teeth 43. In addition, coloring of the upper front teeth 33 and the lower front teeth 43 is less likely to occur.

  As mentioned above, this invention is not limited to such an Example, In the range which does not deviate from the meaning of invention, it can implement with a various form.

14 ・ ・ ・ Practice denture formation process,
172 · · · · inner valve maintenance step, · · · · outer valve maintenance step,
20 ... final denture formation process,
30 ... Practice dentures (treatment dentures),
31 · · · maxillary denture base, 32 · · · maxillary artificial teeth, 36 · · · maxillary inner valve,
41 · · · Mandible denture base, · · · · · · · · · · · · · · inner mandibular valve,
60 · · · human body, 63 · · · oral cavity
64 · · · upper jaw, 65 · · · lower jaw,
75 ... final denture.

The method for producing a denture according to the present invention includes a treatment denture forming step (14), an inner valve maintaining step (172), an outer valve maintaining step (173) and a final denture forming step (20).
The therapeutic denture forming step, maxillary denture (31), maxillary artificial teeth (32), possess mandibular denture (41) and mandibular artificial teeth (42), the final denture prior preparation of (75) Treatment Form the treatment denture (30) used for
The maxillary denture base can be adsorbed to the maxilla (64) in the oral cavity (63) of the human body (60).
The maxillary artificial teeth are provided on the maxillary denture base and include artificial teeth.
The lower denture base can be adsorbed to the lower jaw (65) in the oral cavity of the human body.
The lower jaw artificial tooth part is provided in the lower jaw denture base, and includes an artificial tooth.

In the inner valve maintenance step, the upper inner valve is processed so as to increase the contact area between the upper inner valve (36) and the upper jaw, or to decrease the standard deviation of the contact pressure between the upper inner valve and the upper jaw. . Alternatively, the mandibular inner valve is processed so as to increase the contact area between the mandibular inner valve (46) and the mandible or to reduce the standard deviation of the contact pressure between the mandibular inner valve and the mandible.
The maxillary inner valve is a part of the maxillary denture base where the maxillary denture base contacts the maxilla when the therapeutic denture is put in the oral cavity.
The mandibular inner valve is a part of the mandible denture base in which the mandible denture base contacts the mandible when the treatment denture is put in the oral cavity.

In the outer valve maintenance step, the upper jaw outer side (37) and the upper jaw outer side so that the contact area between the upper jaw outer valve and the human cheek becomes smaller. Process the valve. Or, the mandibular outer side such that the contact area between the mandibular outer valve (47) and the human cheek and tongue is increased, or the standard deviation of the contact pressure between the mandibular outer valve and the human cheek and tongue is decreased. Process the valve.
The maxillary outer valve is a portion of the maxillary denture base where the maxillary denture base contacts the cheeks of the human body when the therapeutic denture is put in the oral cavity.
The mandibular outer valve is a part of the mandible denture base in which the mandible denture base contacts the cheeks and tongue of the human body when the therapeutic denture is put in the oral cavity.
In the final denture forming step, on the basis of the therapeutic denture via the inner valve maintenance step and the outer valve maintenance process, to form the final definition teeth.
In the first aspect, the lower artificial tooth is formed so that the lower back tooth (44) has a flat surface (48) in the treatment denture formation step.
In the second aspect, in the inner valve maintenance step, a groove is formed in the upper or lower mandibular valve.

Claims (8)

An upper denture base (31) capable of adsorbing to the upper jaw (64) in an oral cavity (63) of a human body (60), an upper artificial tooth portion (32) provided on the upper denture base and including artificial teeth, in the oral cavity A practice denture forming process for forming a practice denture (30) provided on a lower denture base (41) capable of adsorbing to a lower jaw (65) and the lower denture base and having a lower artificial tooth portion (42) including an artificial tooth (14) and
When the practice denture is placed in the oral cavity, the contact area between the maxillary inner valve (36), which is the site of the maxillary denture base where the maxillary denture base contacts the maxilla, and the maxilla becomes large, or The lower jaw denture base is the lower jaw when the upper jaw inner valve is processed such that the standard deviation of the contact pressure between the upper jaw inner valve and the upper jaw is reduced, or when the training denture is inserted into the oral cavity. To increase the contact area between the mandible and the mandibular inner valve (46), which is the site of the mandible denture base contacting with the mandible, or to reduce the standard deviation of the contact pressure between the mandibular inner valve and the mandible An inner valve maintenance step (172) for processing the mandibular inner valve;
When the practice denture is placed in the oral cavity, the contact area between the maxillary outer valve (37), which is the site of the maxillary denture base where the maxillary denture base contacts the cheek of the human body, and the cheek of the human body increases. Or when the maxillary lateral valve is processed such that the standard deviation of the contact pressure between the maxillary lateral valve and the cheek of the human body is reduced, or when the training denture is placed in the oral cavity, The contact area between the mandibular outer valve (47) which is the site of the mandibular denture base at which the lower denture base contacts the cheek and tongue of the human body and the cheek and tongue of the human body is increased, or the lower mandibular outer valve An outer valve maintenance step (173) for processing the mandibular outer valve so that the standard deviation of the contact pressure between the human body and the cheek and tongue of the human body is reduced;
A final denture forming step (20) of forming a final denture (75) based on the practice denture via the inner valve holding step and the outer valve holding step;
Of making a denture including: An zonule portion which forms an zonule portion (50) formed along the shape of the zonule on the upper denture base or the lower denture base based on the moving direction of the zonule (68) of the human body Further including a forming step (174),
The final denture forming step according to claim 1, wherein the final denture is formed on the basis of the practice denture via the inner valve maintaining step, the outer valve maintaining step, and the small band forming step. How to make a denture.   Before the practice denture formation process, the distance (Lw1) from the center of the eye (69) of the human body to the connection (70) between the upper lip (61) and the lower lip (62) of the human body and the human body An occlusal height for setting an occlusal height which is a distance from the upper jaw to the lower jaw when the human body bites on the basis of a distance (Lw2) from the nose (71) to the end (72) of the lower jaw The method for producing a denture according to claim 1 or 2, further comprising a setting step (135).   The method for producing a denture according to any one of claims 1 to 3, wherein the lower artificial tooth portion is formed such that the lower back tooth (44) has a flat surface (48) in the practice denture formation step.   After the practice denture formation process, before the inner valve maintenance process and the outer valve maintenance process, pressure is applied to the lower denture base mucous surface (45) which is the surface where the lower denture base contacts the mucous membrane of the human body. The method for producing a denture according to any one of claims 1 to 4, further comprising a resin curing liquid applying step (165) of spreading a resin curing liquid which can be cured by the method.   In the practice denture formation process, from the tip (331) of the maxillary anterior teeth (33) of the maxillary artificial teeth in the longitudinal direction of the human body to the tip (431) of the lower maxillary teeth (43) of the lower artificial teeth. The method for producing a denture according to any one of claims 1 to 5, wherein the practice denture is formed such that an overjet (Jo) which is a distance of 0.8 mm or more and 1.2 mm or less.   The practice dentures are formed so that the overbite (Bo), which is the distance from the tip of the upper incisor to the tip of the lower incisor in the vertical direction of the human body, is 0.1 mm or more and 1.0 mm or less. The manufacturing method of the denture according to claim 6.   The method for manufacturing a denture according to any one of claims 1 to 7, wherein a groove is formed in the upper jaw inner valve or the lower jaw inner valve in the inner valve maintenance step.

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