JP2015165850A - Standard denture base, standard denture, denture preparation kit and denture preparation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a denture base or a denture in which a denture preparation step is simplified and can be adapted to many patients.SOLUTION: A denture is prepared by using an upper jaw standard denture base 100 and a lower jaw standard denture base 200. The upper jaw standard denture base is configured such that a length of a line segment OM for connecting a point O corresponding to an upper lip frenulum equivalent to the midline of a labial denture border with a midpoint M of a line segment PQ is 0.76-1.14, when the length of the line segment PQ for connecting a point P corresponding to a left pterygoid upper jaw notch of a posterior border with a point Q corresponding to a right pterygoid upper jaw notch thereof is assumed as 1. The lower jaw standard denture base is configured such that a length of a line segment om for connecting a point o corresponding to a lower lip frenulum equivalent to the midline of the labial denture border with a midpoint m of a line segment pq is 0.74-0.94, when the length of the line segment pq for connecting a point p corresponding to a left retromolar pad of the posterior border with a point q corresponding to a right retromolar pad thereof is assumed as 1.

Description

  The present invention relates to a ready-made reference denture base and a reference denture having a predetermined shape. Moreover, it is related with the denture preparation kit comprised including these reference | standard denture bases or a reference | standard denture. Furthermore, it is related with the denture preparation method using this denture preparation kit.

Conventionally, dentures are mainly produced by the following procedure.
(1) Taking an impression in the patient's mouth using an impression material.
(2) A plaster model is produced using the impression.
(3) Put the occlusal floor on the patient and obtain the occlusion.
(4) Artificial teeth are arranged on the occlusal floor to produce wax dentures.
(5) Trial the wax denture to the patient and adjust the occlusion.
(6) A wax denture is buried in gypsum to produce a mold.
(7) Resin is poured into a mold and cured to prepare a denture.

  In this way, the dentures are manually manufactured one by one in accordance with the shape of the patient's oral cavity, requiring a lot of time, and the burden on the dental clinic, dental laboratory, and patient is great. In addition, since this method for producing a denture has a plurality of transfer steps, shape errors are likely to occur. Furthermore, the quality is likely to vary depending on the skills of the dentist and dental technician.

  Patent Document 1 discloses a method for producing a denture using a denture base mass-produced using a mold or the like. Patent Document 2 discloses a method for producing a denture using a prosthetic denture precursor in which at least one artificial tooth is arranged on a denture base member made of a photopolymerizable composition that is plastic. Although these methods can simplify some processes, it is still difficult to say that they are sufficiently simplified because it is still necessary to produce a plaster model. In addition, denture bases made based on the oral shape of edentulous jaws are difficult to mass-produce by predetermining the shape of the denture base because the alveolar crest absorption varies from patient to patient.

  Patent Document 3 discloses a method for producing a denture, which is a reference denture base that is prepared in advance and uses a reference denture base that has a recess at the crest. However, Patent Document 3 does not disclose the shape of the standard denture base. Moreover, it is necessary to arrange artificial teeth, which is complicated.

  Conventional denture preparation methods are generally prepared based on the alveolar crest line law, but as described above, this denture preparation method is problematic. Furthermore, in the present age when patients are aging, dentures produced by the above method have difficulty in obtaining a normal occlusion when the alveolar bone is remarkably retracted, causing problems such as cross bite. Therefore, in recent years, a denture preparation method based on the denture space theory has been proposed in which the denture shape is determined in accordance with the muscle pressure neutral zone where the dental arch was supposed to exist at the time of the toothed jaw. However, it takes a lot of time to learn a denture preparation method based on the denture space theory. Moreover, even if it is a denture production method based on denture space theory, the denture production method itself is as complicated as before. Therefore, there is a demand for a denture based on the denture space theory that can be produced by a simple method.

JP-A-6-63065 Japanese Patent Laid-Open No. 1993-192353 JP-A-4-218151

  An object of the present invention is to provide a ready-made denture base or denture that can be adapted to many patients. Moreover, it is in simplifying a denture preparation process and reducing preparation time of a denture.

  In order to solve the above-described problems, the present invention has been conceived in which a denture base shape is determined based on the oral shape of a toothed and edentulous person, and a denture base is produced based on the shape. And it discovered that the denture base of the predetermined shape produced by this method was applicable to many edentulous persons, and came to complete this invention.

  The present invention for solving the above problems is as described below. In the present specification, the standard denture refers to a ready-made denture base and a denture base in which at least one artificial tooth is arranged in advance on the denture base, and the standard denture refers to all teeth on the ready-made denture base. The artificial teeth in the row are pre-arranged.

[1] When the length of a line segment PQ connecting the point P corresponding to the left wing protrusion maxillary notch on the floor trailing edge and the point Q corresponding to the right wing protrusion maxillary notch is 1,
Maxillary standard denture, characterized in that the length of the line segment OM connecting the point O corresponding to the upper lip band in the middle of the labial floor edge and the midpoint M of the line segment PQ is 0.76 to 0.98 floor.

[2] The points that divide the line segment OP connecting the point O and the point P into four equal parts are the points P1, P2, and P3 from the point O side, and the points P1, P2, and P3 on the line segment OP Points where the vertical line from the crossing with the left cheek floor edge is point D1, point D2, point D3,
The points that divide the line segment OQ connecting the point O and the point Q into four equal parts are point Q1, point Q2, and point Q3 from the point O side, and are perpendicular to the points Q1, Q2, and Q3 on the line segment OQ. The points where the line intersects the right cheek floor edge are point E1, point E2, and point E3,
When the length of the line segment PQ is 1,
The lengths of the line segment P1D1 and the line segment Q1E1 are 0.11 to 0.36, respectively.
The lengths of the line segment P2D2 and the line segment Q2E2 are 0.19 to 0.45, respectively.
The lengths of the line segment P3D3 and the line segment Q3E3 are 0.16 to 0.45, respectively.
The maxillary standard denture base according to [1].

  The inventions described in the above [1] to [2] are maxillary standard denture bases having a predetermined shape. This upper standard denture base has a predetermined shape based on the denture space theory.

  [3] The maxillary reference denture base according to [1] or [2], wherein at least one artificial tooth is arranged in advance.

[4] When the length of the line segment PQ is 1,
On the vertical line to the line segment OP connecting the point S6 on the line segment OP and at a distance of 0.74 from the point O and the left cheek floor edge, 0. 0 from the point S6 to the left cheek floor edge side. A central fovea of the left first maxillary molar in a circle of radius 0.14 having a central point at a distance of 11;
On the line perpendicular to the line segment OQ connecting the point T6 on the line segment OQ and at a distance of 0.74 from the point O to the right cheek floor edge, 0. 0 from the point T6 to the right cheek floor edge side. The maxillary standard denture base according to [3], having a central fovea of the right upper first molar in a circle having a radius of 0.14 and having a central point at a distance of 11.

[5] When the length of the line segment PQ is 1,
The maxillary standard denture base according to [3], having an interdental portion between the left maxillary central incisor and the right maxillary central incisor at a distance of 0.76 to 1.14 on the lip side from the point M on the straight line OM .

[6] When the length of the line segment PQ is 1,
On the vertical line to the line segment OP connecting the point S3 on the line segment OP and at a distance of 0.30 from the point O and the left cheek floor edge, 0. 0 from the point S3 to the left cheek floor edge side. A left maxillary canine point in a circle of radius 0.12 with a center point at a distance of 25;
On the vertical line to the line segment OQ connecting the point T3 on the line segment OQ at a distance of 0.30 from the point O and the right cheek floor edge, 0. 0 from the point T3 to the right cheek floor edge side. The maxillary reference denture base according to [3], which has a right upper canine cusp within a circle having a radius of 0.12 having a center point at a distance of 25.

  The inventions described in the above [3] to [6] are maxillary standard denture bases in which at least one artificial tooth is arranged on an upper denture base of a predetermined shape. When these reference denture bases are used, since the reference dentition is arranged in advance, the arrangement time of the dentition is shortened.

  [7] A maxillary standard denture in which artificial teeth of all dentitions are arranged in advance on the maxillary standard denture base according to any one of [1] to [6].

  The invention described in [7] is an upper reference denture in which artificial teeth of all dentitions are arranged on an upper reference denture base of a predetermined shape. When this reference denture is used, since all the dentitions are arranged in advance, the arrangement of the dentitions can be omitted.

[8] When the length of the line segment pq connecting the point p corresponding to the left posterior ridge protrusion and the point q corresponding to the right posterior ridge protrusion on the floor rear edge is 1,
Mandibular reference characterized in that the length of the line segment om connecting the point o corresponding to the lower lip band in the middle of the lip side floor edge and the midpoint m of the line segment pq is 0.74 to 0.94 Denture base.

[9] The points that divide the line segment op connecting the point o and the point p into four equal parts are the points p1, p2, and p3 from the point o side, and the points p1, p2, and p3 on the line segment op. Points perpendicular to the left cheek floor edge are points d1, d2, and d3,
The points that divide the line segment oq connecting the point o and the point q into four equal parts are the point q1, the point q2, and the point q3 from the point o side, and are perpendicular to the points q1, q2, and q3 on the line segment oq. The points where the line intersects the right cheek floor edge are point e1, point e2, and point e3,
When the length of the line segment pq is 1,
The lengths of the line segment p1d1 and the line segment q1e1 are 0.11 to 0.32, respectively.
The lengths of the line segment p2d2 and the line segment q2e2 are 0.13 to 0.34, respectively.
The lengths of the line segment p3d3 and the line segment q3e3 are 0.14 to 0.33, respectively.
The mandibular reference denture base according to [8].

[10] When the length of the line segment pq is 1,
The intersections of the straight lines d1p1, d2p2, d3p3 and e1q1, e2q2, e3q3 and the lingual floor edge are point b1, point b2, point b3 and point c1, point c2, point c3, respectively.
The lengths of the line segment d1b1 and the line segment e1c1 are 0.14 to 0.40, respectively.
The lengths of the line segment d2b2 and the line segment e2c2 are 0.19 to 0.41, respectively.
The lengths of the line segment d3b3 and the line segment e3c3 are 0.21 to 0.42, respectively.
The lower denture base denture base according to [8] or [9].

  The invention described in [8] to [10] is a mandibular reference denture base having a predetermined shape. This mandibular reference denture base has a predetermined shape based on the denture space theory.

  [11] The mandibular reference denture base according to any one of [8] to [10], wherein at least one artificial tooth is arranged in advance.

[12] When the length of the line segment pq is 1,
On the vertical line to the line segment op connecting the point s6 on the line segment op and at a distance of 0.65 from the point o to the left cheek floor edge, 0. 0 from the point s6 to the left cheek floor edge side. Having a fovea of the left lower first molar in a circle of radius 0.12 having a center point at a distance of 08;
On the line perpendicular to the line segment oq connecting the point t6 on the line segment oq and at a distance of 0.65 from the point o and the right cheek floor edge, 0. 0 from the point t6 to the right cheek floor edge side. The mandibular reference denture base according to [11], having a central fovea of the right lower first molar in a circle having a radius of 0.12 having a center point at a distance of 08.

[13] When the length of the line segment pq is 1,
The mandibular standard denture base according to [11], having an interdental portion between the left lower central incisor and the right lower central incisor on the straight line om and at a distance of 0.74 to 0.94 from the point m to the lip side .

[14] When the length of the line segment pq is 1,
On the vertical line to the line segment op connecting the point s3 on the line segment op and at a distance of 0.23 from the point o and the left cheek floor edge, 0. 0 from the point s3 to the left cheek floor edge side. Having a cusp of the left lower canine in a circle of radius 0.11 with a center point at a distance of 17;
On the vertical line to the line segment oq connecting the point t3 on the line segment oq and at a distance of 0.23 from the point o and the right cheek floor edge, 0. 0 from the point t3 to the right cheek floor edge side. The mandibular standard denture base according to [11], wherein the right lower canine cusp has a cusp within a circle having a radius of 0.11 and having a center point at a distance of 17.

  The inventions described in [11] to [14] above are a mandibular reference denture base in which at least one artificial tooth is arranged on a mandibular denture base having a predetermined shape. When these reference denture bases are used, since the reference dentition is arranged in advance, the arrangement time of the dentition is shortened.

  [15] A mandibular standard denture in which artificial teeth of all dentitions are arranged in advance on the mandibular standard denture base according to any one of [8] to [14].

  The invention described in [15] is a mandibular reference denture in which artificial teeth of all dentitions are arranged on a mandibular reference denture base having a predetermined shape. When this reference denture is used, since all the dentitions are arranged in advance, the arrangement of the dentitions can be omitted.

[16] The maxillary standard denture base or maxillary standard denture according to any one of [1] to [7],
[8] to [15] The mandibular standard denture base or the mandibular standard denture according to any one of the above,
A denture preparation kit comprising:

[17] The maxillary standard denture base or the maxillary standard denture according to any one of [1] to [7] and / or
[8] to [15] The mandibular standard denture base or the mandibular standard denture according to any one of the above,
Lining materials,
A denture preparation kit comprising:

  The inventions described in [16] to [17] above are a denture preparation kit comprising a standard denture base or a standard denture of the upper jaw and / or the lower jaw. By using this denture preparation kit, one set of denture base or denture can be prepared.

[18] A plurality of maxillary standard denture bases according to any one of [1] to [6] and having different sizes, and / or
A plurality of mandibular standard denture bases according to any one of [8] to [14], which are different in size,
A denture preparation kit comprising:
[19] The maxillary standard denture base according to any one of [1] to [6], and a plurality of maxillary standard denture bases having different sizes and / or
A plurality of mandibular standard denture bases according to any one of [8] to [14], which are different in size,
Lining materials,
A denture preparation kit comprising:

  The inventions described in [18] and [19] above relate to a denture preparation kit for selecting a reference denture base that matches a patient's oral cavity size from a plurality of reference denture bases having different sizes. With the following method [20] using this denture preparation kit, a denture with a high precision can be prepared in a short time.

[20] selecting a maxillary standard denture base and / or a mandibular standard denture base that fits the patient's oral size from the denture preparation kit according to [18] or [19];
Arranging artificial teeth on the upper standard denture base and / or the lower standard denture base;
Building a lining material on the upper standard denture base and / or the lower standard denture base;
A method for producing a denture characterized by comprising:

[21] A plurality of maxillary standard dentures according to [7] and having different sizes, and / or
A plurality of mandibular standard dentures different in size, the mandibular standard dentures according to [15],
A denture preparation kit comprising:

[22] A plurality of maxillary standard dentures according to [7] and having different sizes, and / or
A plurality of mandibular standard dentures different in size, the mandibular standard dentures according to [15],
Lining materials,
A denture preparation kit comprising:

  The inventions described in the above [21] and [22] relate to a denture preparation kit for selecting a denture that matches a patient's oral shape from a plurality of reference dentures having different sizes. A denture with a high precision can be produced in a short time by the following method [23] using this denture preparation kit.

[23] A step of selecting an upper standard denture and / or a lower standard denture that matches the patient's oral size from the denture preparation kit according to [21] or [22],
Building a lining material on the upper standard denture and / or the lower standard denture;
A method for producing a denture characterized by comprising:

  Since the reference denture base of the present invention has a predetermined shape, it can be easily adapted to the oral shape of the patient simply by building up the lining material. That is, in the conventional denture production process, the denture production time can be shortened by using a ready-made denture base. Further, since the artificial teeth of the entire dentition are arranged in advance on the reference denture base of a predetermined shape, the reference denture of the present invention can be easily produced by simply building up the lining material. That is, in the conventional denture production process, the denture production time can be greatly shortened by using a ready-made denture base and arranging all the dentitions in advance. Thereby, the burden of a dentist, a dental technician, and a patient can be reduced significantly.

  The standard denture base of the present invention is not created by taking an impression of the oral shape of each individual patient as in the past, and is based on the denture space theory by statistically determining the oral shape of a toothed person. Therefore, if several kinds of standard denture bases are prepared, dentures having a high conformity rate can be produced for almost all patients. It can also be adapted to patients with difficult cases with severe alveolar absorption.

FIG. 1 is an explanatory view showing a state in which the reference denture of the present invention is mounted on a patient. FIG. 2 is a plan view showing the shape of the upper standard denture base of the present invention. FIG. 3 is a plan view showing the positions of the artificial teeth arranged on the upper standard denture base of the present invention. FIG. 4 is a plan view showing an example of the maxillary reference denture of the present invention. FIG. 5 is a plan view showing the shape of the mandibular reference denture base of the present invention. FIG. 6 is a plan view showing the positions of the artificial teeth arranged on the lower standard denture base of the present invention. FIG. 7 is a plan view showing an example of a mandibular reference denture of the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an explanatory view showing a state in which the reference denture base of the present invention is mounted on a patient. In FIG. 1, 100 is an upper standard denture base and 200 is a lower standard denture base (hereinafter, these are also simply referred to as “standard denture base”). Reference numeral 101 denotes an artificial tooth. When all the dentitions are arranged in the reference denture base, a reference denture composed of these artificial teeth and the reference denture base is completed.

  In FIG. 1, point O is a point corresponding to the upper lip band corresponding to the middle of the lip side floor edge, and point P is a point corresponding to the left wing protrusion maxillary notch of the floor rear edge. The left buccal floor edge 50 of the upper standard denture base 100 has points D1 to D3 (described later). The point o is a point corresponding to the lower lip band corresponding to the center of the lip side floor edge. The point p is a point corresponding to the left posterior bulge on the rear edge of the floor. The left buccal floor edge 52 of the mandibular reference denture base 200 has points d1 to d3 (described later). The reference denture base of the present invention is characterized in that the relative positional relationship between these points is within a predetermined range.

(Maxillary standard denture base)
FIG. 2 is a plan view showing an example of the upper standard denture base 100 of the present invention. In FIG. 2, the point O is a point corresponding to the upper lip band which is the middle of the lip side floor edge. Point P is a point corresponding to the left wing protrusion maxillary notch on the floor trailing edge, and point Q is a point corresponding to the right wing protrusion maxillary notch on the floor trailing edge. Point M is the midpoint of line segment PQ connecting points P and Q. In the standard denture base of the present invention, when the length of the line segment PQ is 1, the length of the line segment OM connecting the point O and the point M is in the range of 0.76 to 0.98. It is preferably in the range of 81 to 0.93, and more preferably in the range of 0.86 to 0.88. The upper standard denture base having this shape can be adapted to many edentulous people by building up the lining material.

  In FIG. 2, points P1 to P3 are points that divide the line segment OP into four equal parts. That is, the lengths of the line segment OP1, the line segment P1P2, the line segment P2P3, and the line segment P3P are equal. Points D <b> 1 to D <b> 3 are points where a vertical line with respect to the line segment OP from each of the points P <b> 1 to P <b> 3 intersects the left cheek floor edge 50. Points Q1 to Q3 are points that divide the line segment OQ into four equal parts. That is, the lengths of the line segment OQ1, the line segment Q1Q2, the line segment Q2Q3, and the line segment Q3Q are equal. Points E1 to E3 are points where a vertical line with respect to the line segment OQ from each of the points Q1 to Q3 intersects the right cheek floor edge 51.

  In the upper standard denture base of the present invention, when the length of the line segment PQ is 1, the lengths of the line segment P1D1 and the line segment Q1E1 are preferably in the range of 0.11 to 0.36, respectively. More preferably, it is in the range of .16 to 0.31, and particularly preferably in the range of 0.21 to 0.26. The lengths of the line segment P2D2 and the line segment Q2E2 are each preferably in the range of 0.19 to 0.45, more preferably in the range of 0.24 to 0.40, and 0.29 to A range of 0.35 is particularly preferable. Furthermore, the lengths of the line segment P3D3 and the line segment Q3E3 are each preferably in the range of 0.16 to 0.45, more preferably in the range of 0.21 to 0.40, and 0.26 to A range of 0.35 is particularly preferable. The maxillary standard denture base having this shape can be adapted to an edentulous person with a higher precision.

  In the upper standard denture base of the present invention, it is preferable that at least one artificial tooth is arranged in advance. When artificial teeth are arranged in advance, other teeth are formed so as to form a dental arch of any one of a square, a banded circle, a banded circle, and a banded V shape according to the Thompson classification standard based on the artificial teeth. By arranging the rows, the arrangement time of the artificial teeth can be shortened. The upper standard denture base of the present invention may have a recess for arranging artificial teeth.

  FIG. 3 is an explanatory diagram showing the positions of the artificial teeth arranged on the upper standard denture base of the present invention. The point S6 has a length of the line segment PQ of 1, is on the line segment OP, and is a distance of 0.74 from the point O. The point T6 has a length of the line segment PQ of 1, is on the line segment OQ, and is at a distance of 0.74 from the point O. The left upper first molar is on a line perpendicular to the line segment OP from the point S6 to the left buccal floor edge 50 and has a center point at a distance of 0.11 from the point S6 to the left buccal floor edge 50. It is preferably arranged in a circle with a radius of 0.14 so as to have its fovea, and particularly preferably within a circle with a radius of 0.08. Similarly, the right upper first molar is on a vertical line with respect to the line segment OQ from the point T6 to the right buccal floor edge 51 side and is centered at a distance of 0.11 from the point T6 to the right buccal floor edge 51 side. It is preferably arranged so as to have its fovea within a circle having a radius of 0.14 having a point, and particularly preferably within a circle having a radius of 0.08.

  The left and right maxillary central incisors have a length of the line segment PQ of 1, and the left maxillary central incisor and right maxillary central incision on the straight line OM at a distance of 0.76 to 1.14 from the point M to the lips. It is preferable that they are arranged adjacent to each other so as to have an interdental portion with the teeth, more preferably a distance of 0.86 to 1.04, and a distance of 0.91 to 0.99. Particularly preferred.

  The point S3 has a length of the line segment PQ of 1, is on the line segment OP, and is a distance of 0.30 from the point O. The point T3 has a length of the line segment PQ of 1, is on the line segment OQ, and is at a distance of 0.30 from the point O. The left maxillary canine is on a line perpendicular to the line segment OP from the point S3 to the left buccal floor edge 50, and has a radius of 0. 0 with a center point at a distance of 0.25 from the point S3 to the left buccal floor edge 50. It is preferably arranged in the 12 circles so as to have the peak, and particularly preferably in the circle having a radius of 0.07. Similarly, the right upper jaw canine has a center point at a distance of 0.25 from the point T3 to the right cheek floor edge 51 side on the vertical line with respect to the line segment OQ from the point T3 to the right cheek floor edge 51 side. It is preferably arranged in a circle having a radius of 0.12 so as to have its peak, and particularly preferably in a circle having a radius of 0.07.

(Maxillary standard denture)
The maxillary standard denture according to the present invention has artificial teeth of all dentitions arranged in advance on the maxillary standard denture base. FIG. 4 is a plan view showing an example of an upper standard denture in which all artificial teeth are arranged on the upper standard denture base of the present invention. In FIG. 4, 11 is the maxillary central incisor, and 11a is the interdental portion between the left maxillary central incisor and the right maxillary central incisor. 12 is an upper incisor, 13 is an upper canine tooth, 14 is an upper first premolar, 15 is an upper second premolar, 16 is an upper first molar, and 17 is an upper second molar. 16a is the central fovea of the mandibular first molar.

  The positions where these artificial teeth are arranged are not particularly limited, but are preferably arranged at the positions described above. These dental arches are preferably formed of any one of a square, a band circle, a band, and a band V according to the Thompson classification standard.

(Mandibular standard denture base)
FIG. 5 is a plan view showing an example of the mandibular reference denture base 200 of the present invention. In FIG. 5, the point o is a point corresponding to the lower lip band corresponding to the middle of the lip side floor edge. The point p is a point corresponding to the left posterior bulge on the floor rear edge, and the point q is a point corresponding to the right posterior ridge on the floor rear edge. Point m is the midpoint of line segment pq connecting points p and q. In the mandibular standard denture base of the present invention, when the length of the line segment pq is 1, the length of the line segment om connecting the point o and the point m is in the range of 0.76 to 0.94. It is preferably in the range of .80 to 0.90, and more preferably in the range of 0.84 to 0.86. A mandibular standard denture base having this shape can be adapted to many edentulous people by building up the lining material.

  In FIG. 5, points p1 to p3 are points that divide the line segment op into four equal parts. That is, the lengths of the line segment op1, the line segment p1p2, the line segment p2p3, and the line segment p3p are equal. Points d <b> 1 to d <b> 3 are points where a vertical line with respect to the line segment op from each of the points p <b> 1 to p <b> 3 intersects the left cheek floor edge 52. Points q1 to q3 are points that divide the line segment oq into four equal parts. That is, the lengths of the line segment oq1, the line segment q1q2, the line segment q2q3, and the line segment q3q are equal. Points e1 to e3 are points where a vertical line with respect to the line segment oq from each of the points q1 to q3 intersects the right cheek floor edge 53.

  In the mandibular standard denture base of the present invention, when the length of the line segment pq is 1, the lengths of the line segment p1d1 and the line segment q1e1 are preferably in the range of 0.11 to 0.32, respectively. More preferably, it is in the range of .15 to 0.28, and particularly preferably in the range of 0.19 to 0.24. The lengths of the line segment p2d2 and the line segment q2e2 are each preferably in the range of 0.13 to 0.34, more preferably in the range of 0.17 to 0.30, A range of 0.26 is particularly preferable. Furthermore, the lengths of the line segment p3d3 and the line segment q3e3 are each preferably in the range of 0.14 to 0.33, more preferably in the range of 0.18 to 0.29. A range of 0.25 is particularly preferable. A mandibular reference denture base having this shape can be adapted to an edentulous person with a higher precision.

  In FIG. 5, points b <b> 1 to b <b> 3 are points where a vertical line with respect to the line segment op from each of the points p <b> 1 to p <b> 3 intersects the lingual floor edge. Points c1 to c3 are points where a vertical line with respect to the line segment oq from each of the points q1 to q3 intersects the lingual floor edge.

  In the mandibular standard denture base of the present invention, when the length of the line segment pq is 1, the lengths of the line segment d1b1 and the line segment e1c1 are preferably in the range of 0.14 to 0.40, respectively. More preferably, it is in the range of 19 to 0.35, and particularly preferably in the range of 0.24 to 0.30. The lengths of the line segment d2b2 and the line segment e2c2 are each preferably in the range of 0.19 to 0.41, more preferably in the range of 0.24 to 0.36, and 0.29 to A range of 0.31 is particularly preferable. Furthermore, the lengths of the line segment d3b3 and the line segment e3c3 are each preferably in the range of 0.21 to 0.42, more preferably in the range of 0.25 to 0.38, and 0.30 to 0.30. A range of 0.34 is particularly preferable. A mandibular reference denture base having this shape can be adapted to an edentulous person with an even higher precision.

  In the lower standard denture base of the present invention, it is preferable that at least one artificial tooth is arranged in advance. When artificial teeth are arranged in advance, other teeth are formed so as to form a dental arch of any one of a square, a banded circle, a banded circle, and a banded V shape according to the Thompson classification standard based on the artificial teeth. By arranging the rows, the arrangement time of the artificial teeth can be shortened.

  FIG. 6 is an explanatory diagram showing the positions of the artificial teeth arranged on the lower standard denture base of the present invention. The point s6 has a length of the line segment pq of 1, is on the line segment op, and is a distance of 0.65 from the point o. The point t6 has a length of the line segment pq of 1, is on the line segment oq, and is at a distance of 0.65 from the point o. The left lower first molar is on the vertical line with respect to the line op from the point s6 to the left buccal floor edge 52 and has a center point at a distance of 0.08 from the point s6 to the left buccal floor edge 52. It is preferably arranged in a circle with a radius of 0.12 so as to have its fovea, and particularly preferably within a circle with a radius of 0.08. Similarly, the right lower first molar is centered at a distance of 0.08 from the point t6 to the right buccal floor edge 53 side and perpendicular to the line segment oq from the point t6 to the right buccal floor edge 53 side. It is preferably arranged so as to have its fovea within a circle having a radius of 0.12 having a point, and particularly preferably within a circle having a radius of 0.08.

  The left and right mandibular central incisors have a length of the line segment pq of 1, and the left mandibular central incisor and the right mandibular central incisor at a distance of 0.74 to 0.94 from the point m to the lip side on the straight line om. It is preferable that they are arranged adjacent to each other so as to have an interdental portion with the teeth, more preferably a distance of 0.79 to 0.89, and a distance of 0.83 to 0.85. Particularly preferred.

  The point s3 has a length of the line segment pq of 1, is on the line segment op, and is at a distance of 0.23 from the point o. The point t3 has a length of the line segment pq of 1, is on the line segment oq, and is at a distance of 0.23 from the point o. The left mandibular canine is on a line perpendicular to the line op from the point s3 to the left buccal floor edge 52, and has a radius of 0. 0 with a center point at a distance of 0.17 from the point s3 to the left buccal floor edge 52. The ellipse is preferably arranged so as to have its peak, and particularly preferably within a circle having a radius of 0.08. Similarly, the right lower canine tooth has a center point at a distance of 0.17 from the point t3 to the right buccal floor edge 53 side on the vertical line with respect to the line segment oq from the point t3 to the right buccal floor edge 53 side. It is preferable that they are arranged in a circle having a radius of 0.11 so as to have a peak, and it is particularly preferable to be in a circle having a radius of 0.08.

(Mandibular standard denture)
The mandibular reference denture according to the present invention has artificial teeth of all dentitions arranged in advance on the mandibular reference denture base. FIG. 7 is a plan view showing an example of a mandibular standard denture in which all artificial teeth are arranged on the mandibular standard denture base of the present invention. In FIG. 7, 21 is a mandibular central incisor, and 21a is an interdental portion between the left mandibular central incisor and the right mandibular central incisor. Reference numeral 22 is a mandibular incisor, 23 is a mandibular canine, 24 is a mandibular first premolar, 25 is a mandibular second premolar, 26 is a mandibular first premolar, and 27 is a mandibular second premolar. Reference numeral 26a denotes a central fovea of the lower first molar.
The positions where these artificial teeth are arranged are not particularly limited, but are preferably arranged at the positions described above. These dental arches are preferably formed of any one of a square, a band circle, a band, and a band V according to the Thompson classification standard.

(Denture preparation kit)
The denture preparation kit of the present invention is composed of the upper standard denture base or upper standard denture of the present invention and / or the lower standard denture base or lower standard denture of the present invention, and may include a lining material. When using a standard denture base, a denture is produced by building up a backing material and arranging artificial teeth so as to match the patient's oral cavity size. When using a standard denture, a denture is produced by building up a lining material to match the patient's oral shape.

(Denture preparation kit)
In the denture preparation kit of the present invention, it is preferable to prepare in advance a plurality of maxillary standard denture bases or maxillary standard dentures and mandibular standard denture bases or mandibular standard dentures of different sizes. Thereby, the adaptation rate to a patient can be raised more. The size of the upper standard denture base or upper standard denture and lower standard denture base or lower standard denture is preferably 2-10 types, more preferably 2-5 types. It is particularly preferable to prepare the types.

A method for preparing a denture using the denture preparation kit of the present invention will be described below.
First, a maxillary standard denture base or maxillary standard denture and / or a mandibular standard denture base or mandibular standard denture that match the patient's oral cavity size are selected. Selection of such a standard denture base can be determined based on measurement of oral cavity size. As a method for measuring the oral cavity size, a known method can be used, and examples thereof include measurement by visual inspection and palpation, measurement of size by trial fitting of an impression tray, and the like. When the standard denture base is selected, artificial teeth are arranged on the selected maxillary standard denture base and mandibular standard denture base, respectively, and the maxillary standard denture and the mandibular standard denture are produced. Furthermore, the upper jaw denture and the lower jaw reference denture are each fitted with a lining material and are perfectly adapted to the oral shape of the patient. Either the arrangement of the artificial teeth or the lining of the lining material may be performed first. The occlusion is then adjusted after being tried in the patient's mouth. As a result, a denture that matches the shape of the oral cavity of the patient is produced.

  Any known material for the standard denture base of the present invention can be used without any limitation. Specifically, at least from a homopolymer of methyl (meth) acrylate, ethyl (meth) acrylate, isopropyl (meth) acrylate, n-propyl (meth) acrylate, butyl (meth) acrylate or a copolymer thereof. One selected poly (meth) acrylate resin, polyolefin resin (eg, polypropylene), polyamide resin (eg, nylon 66 (registered trademark)), polyester resin (eg, polycarbonate), polyether resin ( For example, polyacetal, polysulfone), polynitrile resin (for example, polyacrylonitrile), polyvinyl resin (for example, polyvinyl acetate), cellulose resin (for example, cellulose acetate), fluorine resin (for example, polychlorofluoroethylene) Emissions), imide-based resins (e.g., an aromatic polyimide), and the like.

  The reference denture base in the present invention may contain a filler in order to improve the strength of the denture base. The filler may be an organic filler or an inorganic filler. Moreover, you may use the granular organic-inorganic composite filler obtained by adding a polymerizable monomer to an inorganic filler beforehand, making it paste-form, polymerizing, and grind | pulverizing.

  A part of the reference denture base of the present invention may be made of metal.

  The standard denture base of the present invention is molded by a known method. Examples include injection molding and compression molding.

    As the lining material, known materials can be used without any limitation. For example, the above-mentioned poly (meth) acrylate resin described as a standard denture base material, polyolefin resin, polyamide resin, polyester resin, polyether resin, polynitrile resin, polyvinyl resin, cellulose resin, Fluorine resin, imide resin, silicon resin and the like can be mentioned.

  In the present invention, a known artificial tooth made of resin or ceramic can be used as the artificial tooth. Examples of resin-made artificial teeth include the above-mentioned poly (meth) acrylate resins, polyolefin resins, polyamide resins, polyester resins, polyether resins, polynitrile resins, polyvinyl resins, cellulose resins, and fluorine resins. Examples include artificial teeth made of resin, imide resin, silicon resin and the like. As a method for fixing the artificial tooth, conventionally known methods such as fitting and bonding can be used without any limitation.

(Fit rate)
In this example, the conformity rate was evaluated based on the ratio of the number of conforming models when the standard denture base or the standard denture was lined and trial-fit to 20 types of edentulous full jaw models having different shapes.

(Array time)
In this example, the arrangement time is 100% when arranging the artificial teeth of the entire dentition when producing a custom-made denture (conventional method) in the reference example. Evaluation was based on the percentage of time required to arrange the artificial teeth.

(Occlusal adjustment time)
In this embodiment, the occlusal adjustment time is 100% for the preparation of a custom-made denture (conventional method), and it is necessary to adjust the occlusion to the standard denture base of each embodiment. The percentage of time spent was evaluated.

(Example 1-20, Comparative Example 1-4)
An upper standard denture base with the shape described in Table 1 was prepared, and the precision, arrangement time, and occlusal adjustment time were evaluated. The evaluation results are shown in Table 1. Although the left side is shown as a representative value, the right side was made with the same value as the left side.

(Example 21-40, Comparative Example 5-8)
Mandibular reference denture bases having the shapes shown in Table 2 were prepared, and the precision, arrangement time, and occlusal adjustment time were evaluated. The evaluation results are shown in Table 2. Although the left side is shown as a representative value, the right side was made with the same value as the left side.

In the table, No. 6 is the first molar, No. 1 is the central incisor, and No. 3 is the canine. In addition, in the case of the first molar (No. 6) or canine (No. 3), “0” means that the fovea of the artificial tooth (in the case of the first molar) or the peak (in the case of the canine) is defined in this application. It means that it is arranged so as to be the center in a predetermined circle. For example, “0.14” in the first molar (No. 6) means the distance from the center to the fovea in the predetermined circle defined in the present application. Other numerical values have the same meaning. For example, “0.12” in canine (No. 3) means the distance from the center in the predetermined circle defined in the present application to the peak. Other numerical values have the same meaning. In the case of the maxillary central incisor, “0.95” has an interdental portion between the left maxillary central incisor and the right maxillary central incisor at a distance of 0.95 from the point M to the lip side on the straight line OM. "1.14" and "0.76" are arranged so that there is an interdental portion between the left maxillary central incisor and the right maxillary central incisor at a distance of each described value. It means being done. In the case of the mandibular central incisor, “0.84” has an interdental portion between the left mandibular central incisor and the right mandibular central incisor at a distance of 0.84 from the point m to the lip on the straight line om. "0.94" and "0.74" are arranged so that the distance between the described values is a distance between the left lower central incisor and the right lower central incisor. It means being done.

11 ... Maxillary central incisor 11a ... Interdental portion between left maxillary central incisor and right maxillary central incisor 12 ... Maxillary incisor 13 ... Maxillary canine 14 ... Maxillary first small Molar 15 ... Maxillary second premolar 16 ... Maxillary first molar 16a ... Central fossa of maxillary first molar 17 ... Maxillary second molar 21 ... Mandibular central incisor 21a .. Interdental portion between left mandibular central incisor and right mandibular central incisor 22 ... mandibular incisor 23 ... mandibular canine 24 ... mandibular first premolar 25 ... mandibular second premolar 26 ... Mandibular first molar 26a ... Central fossa of mandibular first molar 27 ... Mandibular second molar 50, 52 ... Left cheek floor edge 51, 53 ... Right cheek side Base margin 100 ... Maxillary standard denture base 101 ... Artificial tooth 200 ... Mandibular standard denture base

Claims (23)

When the length of the line segment PQ connecting the point P corresponding to the left wing protrusion maxillary notch at the trailing edge of the floor and the point Q corresponding to the right wing protrusion maxillary notch is 1,
Maxillary standard denture, characterized in that the length of the line segment OM connecting the point O corresponding to the upper lip band in the middle of the labial floor edge and the midpoint M of the line segment PQ is 0.76 to 0.98 floor. The points that divide the line segment OP connecting the point O and the point P into four equal parts are point P1, point P2, and point P3 from the point O side, and are perpendicular to the point P1, point P2, and point P3 on the line segment OP. The points where the line intersects the left cheek floor edge are point D1, point D2, and point D3,
The points that divide the line segment OQ connecting the point O and the point Q into four equal parts are point Q1, point Q2, and point Q3 from the point O side, and are perpendicular to the points Q1, Q2, and Q3 on the line segment OQ. The points where the line intersects the right cheek floor edge are point E1, point E2, and point E3,
When the length of the line segment PQ is 1,
The lengths of the line segment P1D1 and the line segment Q1E1 are 0.11 to 0.36, respectively.
The lengths of the line segment P2D2 and the line segment Q2E2 are 0.19 to 0.45, respectively.
The lengths of the line segment P3D3 and the line segment Q3E3 are 0.16 to 0.45, respectively.
The maxillary reference denture base according to claim 1.   The maxillary standard denture base according to claim 1 or 2, wherein at least one artificial tooth is arranged in advance. When the length of the line segment PQ is 1,
On the vertical line to the line segment OP connecting the point S6 on the line segment OP and at a distance of 0.74 from the point O and the left cheek floor edge, 0. 0 from the point S6 to the left cheek floor edge side. A central fovea of the left first maxillary molar in a circle of radius 0.14 having a central point at a distance of 11;
On the line perpendicular to the line segment OQ connecting the point T6 on the line segment OQ and at a distance of 0.74 from the point O to the right cheek floor edge, 0. 0 from the point T6 to the right cheek floor edge side. 4. A maxillary standard denture base according to claim 3 having a central fovea of the right upper first molar in a circle of radius 0.14 having a center point at a distance of 11. When the length of the line segment PQ is 1,
The maxillary standard denture base according to claim 3, which has an interdental portion between the left maxillary central incisor and the right maxillary central incisor at a distance of 0.76 to 1.14 on the lip side from the point M on the straight line OM. . When the length of the line segment PQ is 1,
On the vertical line to the line segment OP connecting the point S3 on the line segment OP and at a distance of 0.30 from the point O and the left cheek floor edge, 0. 0 from the point S3 to the left cheek floor edge side. A left maxillary canine point in a circle of radius 0.12 with a center point at a distance of 25;
On the vertical line to the line segment OQ connecting the point T3 on the line segment OQ at a distance of 0.30 from the point O and the right cheek floor edge, 0. 0 from the point T3 to the right cheek floor edge side. 4. The maxillary standard denture base according to claim 3, wherein the upper maxillary canine point is within a circle having a radius of 0.12 having a center point at a distance of 25.   A maxillary standard denture in which artificial teeth of all dentitions are arranged in advance on the maxillary standard denture base according to any one of claims 1 to 6. When the length of the line segment pq connecting the point p corresponding to the left posterior ridge protrusion and the point q corresponding to the right posterior ridge protrusion of the floor rear edge is 1,
Mandibular reference characterized in that the length of the line segment om connecting the point o corresponding to the lower lip band in the middle of the lip side floor edge and the midpoint m of the line segment pq is 0.74 to 0.94 Denture base. The points that divide line segment op connecting point o and point p into four equal parts are point p1, point p2, and point p3 from point o, and are perpendicular to points p1, p2, and p3 on line segment op. The points where the line intersects the left cheek floor edge are point d1, point d2, and point d3,
The points that divide the line segment oq connecting the point o and the point q into four equal parts are the point q1, the point q2, and the point q3 from the point o side, and are perpendicular to the points q1, q2, and q3 on the line segment oq. The points where the line intersects the right cheek floor edge are point e1, point e2, and point e3,
When the length of the line segment pq is 1,
The lengths of the line segment p1d1 and the line segment q1e1 are 0.11 to 0.32, respectively.
The lengths of the line segment p2d2 and the line segment q2e2 are 0.13 to 0.34, respectively.
The lengths of the line segment p3d3 and the line segment q3e3 are 0.14 to 0.33, respectively.
The mandibular reference denture base according to claim 8. When the length of the line segment pq is 1,
The intersections of the straight lines d1p1, d2p2, d3p3 and e1q1, e2q2, e3q3 and the lingual floor edge are point b1, point b2, point b3 and point c1, point c2, point c3, respectively.
The lengths of the line segment d1b1 and the line segment e1c1 are 0.14 to 0.40, respectively.
The lengths of the line segment d2b2 and the line segment e2c2 are 0.19 to 0.41, respectively.
The lengths of the line segment d3b3 and the line segment e3c3 are 0.21 to 0.42, respectively.
The mandibular reference denture base according to claim 8 or 9.   The mandibular reference denture base according to any one of claims 8 to 10, wherein at least one artificial tooth is arranged in advance. When the length of the line segment pq is 1,
On the vertical line to the line segment op connecting the point s6 on the line segment op and at a distance of 0.65 from the point o to the left cheek floor edge, 0. 0 from the point s6 to the left cheek floor edge side. Having a fovea of the left lower first molar in a circle of radius 0.12 having a center point at a distance of 08;
On the line perpendicular to the line segment oq connecting the point t6 on the line segment oq and at a distance of 0.65 from the point o and the right cheek floor edge, 0. 0 from the point t6 to the right cheek floor edge side. 12. A mandibular reference denture base according to claim 11 having a central fovea of the right lower first molar in a circle of radius 0.12 having a center point at a distance of 08. When the length of the line segment pq is 1,
The mandibular reference denture base according to claim 11, which has an interdental portion between the left mandibular central incisor and the right mandibular central incisor on a straight line om and at a distance of 0.74 to 0.94 on the lip side from the point m. . When the length of the line segment pq is 1,
On the vertical line to the line segment op connecting the point s3 on the line segment op and at a distance of 0.23 from the point o and the left cheek floor edge, 0. 0 from the point s3 to the left cheek floor edge side. Having a cusp of the left lower canine in a circle of radius 0.11 with a center point at a distance of 17;
On the vertical line to the line segment oq connecting the point t3 on the line segment oq and at a distance of 0.23 from the point o and the right cheek floor edge, 0. 0 from the point t3 to the right cheek floor edge side. 12. The mandibular reference denture base of claim 11 having a right mandibular canine point in a circle of radius 0.11 having a center point at a distance of 17.   15. A mandibular reference denture in which artificial teeth of all dentitions are arranged in advance on the mandibular reference denture base according to any one of claims 8 to 14. Maxillary standard denture base or maxillary standard denture according to any one of claims 1 to 7,
The mandibular reference denture base or the mandibular reference denture according to any one of claims 8 to 15,
A denture preparation kit comprising: Maxillary standard denture base or maxillary standard denture according to any one of claims 1 to 7, and / or
The mandibular reference denture base or the mandibular reference denture according to any one of claims 8 to 15,
Lining materials,
A denture preparation kit comprising: The maxillary standard denture base according to any one of claims 1 to 6, wherein a plurality of maxillary standard denture bases of different sizes and / or
The mandibular standard denture base according to any one of claims 8 to 14, wherein a plurality of mandibular standard denture bases having different sizes are provided.
A denture preparation kit comprising: The maxillary standard denture base according to any one of claims 1 to 6, wherein a plurality of maxillary standard denture bases of different sizes and / or
The mandibular standard denture base according to any one of claims 8 to 14, wherein a plurality of mandibular standard denture bases having different sizes are provided.
Lining materials,
A denture preparation kit comprising: Selecting a maxillary reference denture base and / or a mandibular reference denture base that fits the size of the patient's mouth from the denture preparation kit according to claim 18 or 19,
Arranging artificial teeth on the upper standard denture base and / or the lower standard denture base;
Building a lining material on the upper standard denture base and / or the lower standard denture base;
A method for producing a denture characterized by comprising: The maxillary standard denture according to claim 7 and having a plurality of maxillary standard dentures of different sizes and / or
A plurality of mandibular reference dentures of different sizes in the mandibular reference dentures according to claim 15,
A denture preparation kit comprising: The maxillary standard denture according to claim 7 and having a plurality of maxillary standard dentures of different sizes and / or
A plurality of mandibular reference dentures of different sizes in the mandibular reference dentures according to claim 15,
Lining materials,
A denture preparation kit comprising: Selecting a maxillary reference denture and / or a mandibular reference denture that fits the size of the patient's mouth from the denture preparation kit according to claim 21 or 22;
Building a lining material on the upper standard denture and / or the lower standard denture;
A method for producing a denture characterized by comprising:

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