WO2020175295A1 - Prothèses dentaires et fixation de montage pour celles-ci - Google Patents

Prothèses dentaires et fixation de montage pour celles-ci Download PDF

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Publication number
WO2020175295A1
WO2020175295A1 PCT/JP2020/006652 JP2020006652W WO2020175295A1 WO 2020175295 A1 WO2020175295 A1 WO 2020175295A1 JP 2020006652 W JP2020006652 W JP 2020006652W WO 2020175295 A1 WO2020175295 A1 WO 2020175295A1
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WO
WIPO (PCT)
Prior art keywords
denture
free end
abutment tooth
attachment
free
Prior art date
Application number
PCT/JP2020/006652
Other languages
English (en)
Japanese (ja)
Inventor
正 河北
Original Assignee
正 河北
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2019034870A external-priority patent/JP6598275B1/ja
Priority claimed from JP2019194764A external-priority patent/JP6777801B1/ja
Application filed by 正 河北 filed Critical 正 河北
Publication of WO2020175295A1 publication Critical patent/WO2020175295A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/225—Fastening prostheses in the mouth
    • A61C13/235—Magnetic fastening
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/225—Fastening prostheses in the mouth
    • A61C13/265—Sliding or snap attachments

Definitions

  • the present invention relates to a denture of a type in which one end of a free-end denture is removably attached to one abutment tooth, and an attachment thereof.
  • An attachment attachment made of a magnetic material is provided on the abutment tooth of the book, and a magnet that exerts a pulling force on the magnetic material is provided on the proximal end side.
  • a detachable removable denture is conventionally known (for example, see Patent Document 1).
  • the magnet unit is provided on the surface of the denture adjacent to the abutment tooth,!
  • the _ type keeper and the magnet unit are pressed against each other for latch engagement, or the free end denture is pulled from the abutment tooth to release the latch engagement so that the free end denture can be detached from the abutment tooth. Has become.
  • Patent Document 1 column 4, lines 20 to 40, as a specific configuration, "another specific example of the present invention regarding partial dentures is shown in FIG. 5.
  • the par 25 is located on the surface of the metal crown 30 and the magnet unit 35 is attached to the removable denture.
  • the keeper 25 is a hemispherical recess 4 2 and a hemisphere. It has a keeper surface 4 3 that protrudes to the outside and an occlusal stopper _ 4 5.
  • the magnet unit 3 5 includes a magnet 3 6 and a pole end 4 8 that protrudes upward in a hemispherical shape. ⁇ 2020/175 295 2 (:171? 2020/006652
  • both embodiments of the invention are made of similar materials.
  • the magnet assembly of another specific example shown in FIG. 5 the corresponding hemispherical surface is formed as shown in FIG. 5, and the occlusal force ⁇ shown in FIG.
  • the magnet unit can be moved to rotate about the hinge axes 1 to 1 by a small angle until it contacts the pole end 48 of the and prevents further movement.
  • By having such an arrangement it is possible to prevent annoying phenomena such as hitting and bouncing from occurring while the occlusal force is acting.
  • the occlusal force is no longer applied, the entire denture returns to the position shown in Fig. 5. It is described as ".
  • Patent Document 1 US Pat. No. 4,508,507
  • Patent Document 1 introduced as a conventional technique in an innumerable number of times after denture mounting.
  • the added denture will be added to the denture, the abutment to which it is attached, and its connecting portion.
  • the size of the abutment to which the denture is mounted and the size of the denture itself are almost constant.
  • the width is generally 80!!! to 90!!!, so if the configuration disclosed in the above-mentioned prior art is applied to this premolar, the conventional art
  • the diameter of the curved part of the keeper 25 is ⁇ .
  • the vertical dimension in the figure of a member equivalent to the pole member 50, which is arranged on the opposite side of the pole member 50 through the pole member 50 and the magnet 36 and has a hemispherical pole end at the end About 0. Becomes
  • each constituent element of the connection part of the denture described in the prior art which is the prior art has a very small size and has any strength. Even if a material such as metal or resin is used, it is clear that even if a little force is applied, the component parts are separated from each other or the component parts themselves are damaged and become disjointed.
  • the occlusal force is a complex orthogonal coordinate system. It works as a vector with a strong resultant force while constantly changing its size and direction. Considering the mandibular crushing motion that causes the chewing motion when chewing food in this way, the occlusal motion after wearing a denture is also a very complicated movement, as in the case of occlusal motion with natural teeth. Can understand.
  • Patent Document 1 discloses a very large occlusal force that acts on a free-end denture or an abutment tooth in a complicated three-dimensional direction rather than merely acting in the vertical direction during occlusion. It turns out that it is obviously impossible to take charge of the composition. As a result, the components that attach the free-end denture to the abutment tooth may become disjointed or shattered as the normal occlusion is repeated several times after the denture is attached to the abutment tooth. Will end up.
  • An object of the present invention is to provide a denture which is easy to put on and take off, and which can be continuously used for a long period of time while giving a wearer having an excellent wearing feeling and a comfortable bite during eating.
  • the protruding portion of the metal crown has a substantially spherical body made of a magnetic material, and a fixing portion forming a connecting portion between the substantially spherical body and the metal crown,
  • the fixing portion includes an embedded fixing portion arranged in the metal crown, and a connecting fixing portion in which one end of the embedded fixing portion is coupled to the embedded fixing portion and is exposed from a surface of the metal crown and connected to the substantially spherical body.
  • the thickness of the connecting and fixing portion is smaller than the outer diameter of the substantially spherical body, and the central axis direction of the connecting and fixing portion has the free end denture attached to the abutment tooth, Extending from a lateral outer peripheral surface of the metal crown toward one end side of the free end denture facing the metal crown,
  • An accommodating recess that can be accommodated is formed, and the inside of the free end denture is located near the accommodating recess and closer to the other end of the free end denture than the accommodating recess. And a magnet provided on the
  • the substantially spherical body When viewed in a state where the free-end denture is attached to the abutment tooth, the substantially spherical body is formed in the accommodation recess while the outer peripheral surface of the substantially spherical body is engaged with the inner peripheral surface of the accommodation recess.
  • the free end denture can be attached to the abutment tooth with the bottom of the denture base of the free end denture in contact with the surface of the gingiva,
  • the recessed part provided at one end of the free-end denture is matched with the occlusal force acting on the free-end denture during occlusion. While the other end is a free end as a fulcrum, the free end denture itself moves within a range where the occlusal force acts, and the free end denture at the time of the occlusion is aligned with the direction in which the occlusal force acts.
  • the bottom part of the denture base is pressed against the gingiva through the denture base, and a compressive repulsive force from the gingiva causes a mechanical reaction in the protruding portion and the accommodating recess portion that exceeds the allowable range of strength. It is possible to occlude while absorbing the occlusal force without
  • At least a part of the outer peripheral surface of the projecting portion corresponds to the inner peripheral surface of the accommodating recessed portion according to the change in the direction in which the occlusal force acts.
  • the free contact denture is generated based on the fact that the relative contact state of each other is constantly changed while directly contacting at least a part of the occlusal force, and the action direction of the occlusal force changes not only in the vertical direction but also in the front-back direction and the left-right direction Even if a bending moment as well as a torsion moment is generated, the repulsive force from the gingiva that occurs when the denture base of the free-end denture is pressed against the gingiva, and the outer peripheral surface of the protrusion and the accommodation recess It is characterized by having a structure in which these moments are not directly applied to the abutment tooth through the engaging force generated at the direct contact portion with the inner peripheral surface.
  • the free end denture according to the present invention can be attached to the abutment tooth and continued to be used for a long period of time without generating force.
  • the denture and its attachment according to claim 2 of the present invention are the denture and its attachment according to claim 1,
  • the protruding portion of the metal crown is connected to the other end of the connection fixing portion such that the extension line of the central axis of the connection fixing portion passes through the center of the substantially spherical body or the vicinity thereof. There is.
  • the denture and its attachment according to claim 3 of the present invention are the denture and its attachment according to claim 1 or 2, wherein the occlusal force is three-dimensional with respect to the free end denture during occlusion. It is characterized in that the attachment state of the free end denture with respect to the abutment tooth can be maintained even when it acts in the original direction.
  • a denture and its attachment according to claim 4 of the present invention are the denture and its attachment according to any one of claims 1 to 3.
  • At least a part of the curved outer peripheral surface of the substantially spherical body provided in the protruding portion at the time of occlusion is the inner peripheral surface in the recessed portion. It is characterized by being in surface contact with.
  • a denture and its attachment according to claim 5 of the present invention are the denture and its attachment according to any one of claims 1 to 3.
  • the outer peripheral surface of the curved portion of the substantially spherical body and a part of the inner peripheral surface inside the recessed portion of the free end denture make a line contact during occlusion. It is characterized by doing.
  • a denture and its attachment according to claim 6 of the present invention are the denture and its attachment according to any one of claims 1 to 3.
  • the denture and its attachment attachment according to claim 7 of the present invention are the denture and its attachment attachment according to any one of claims 1 to 6.
  • the denture and its attachment according to claim 8 of the present invention are the denture and its attachment according to any one of claims 1 to 7.
  • an implant is used to form the abutment tooth together with the metal crown.
  • the denture and its attachment attachment according to claim 9 of the present invention are the denture and its attachment attachment according to any one of claims 1 to 8.
  • the internal stress exceeding the fracture yield point of the magnetic material forming the abutment tooth is caused by an excessive occlusal force acting on the denture and its attachment attachment that cannot occur in the actual wearing condition or use condition of the denture.
  • the fixing portion plays a role as a fatigue rupture starting portion in which the fixing portion is broken and the protruding portion is divided into two.
  • the metal crown according to claim 10 of the present invention can be used only for the denture according to any one of claims 1 to 8 and the attachment thereof. It is the metal crown described in.
  • the free end denture according to claim 11 of the present invention can be used only for the denture according to any one of claims 1 to 8 and its attachment. It is a free-end denture as described in any one. Effect of the invention
  • Fig. 1 is a side view showing a partial cross-section of the structure of a denture and its attachment according to a first embodiment of the present invention.
  • FIG. 2 is a partial cross-sectional plan view of the artificial tooth and its attachment attachment shown in FIG. 1.
  • FIG. 3 is a partially enlarged view of the denture and its attachment shown in FIG.
  • FIG. 4 is a side view corresponding to FIG. 1 for explaining the operation of the denture and its attachment according to the first embodiment.
  • FIG. 5 is a partial enlarged view of a denture and its attachment according to a modification of the first embodiment.
  • FIG. 6 is an explanatory view showing an example of the attachment positions of the artificial tooth and its attachment attachment according to the first embodiment and its modification shown in FIGS. 1 to 4.
  • FIG. 7 is a side view showing the structure of a denture and its attachment according to a second embodiment of the present invention in a partial cross section.
  • FIG. 8 A partial enlarged view of the artificial tooth and its attachment shown in FIG. 7.
  • FIG. 9 is a plan view showing the denture shown in FIG. 7 and its attachment attachment in a partial cross section.
  • FIG. 10 is various explanatory views showing the engagement state of the denture and its attachment attachment common to the first embodiment and its modification of the present invention and the second embodiment.
  • FIG. 11 is a continuation of FIG. 10 and various explanatory views showing the engagement state of the denture and its attachment attachment common to the first embodiment and its modification of the present invention, and the second embodiment.
  • FIG. 12 is various explanatory views showing the engagement state of the artificial tooth and its attachment attachment common to the first embodiment and its modification of the present invention and the second embodiment following FIG. 11. ⁇ 2020/175 295 10 ⁇ (:171? 2020 /006652
  • the present invention relates to a free end denture with one end having a periodontal ligament and a mounting attachment thereof as described above.
  • the structure of the tooth tissue as a precondition for attaching the free end denture according to the present invention will be described.
  • tissue of the tooth it is embedded inside the gingiva of the upper and lower jaws.
  • the root portion of the tooth of the tooth is covered with a hard cementum on its surface, and the very hard fibrous connective tissue called periodontal ligament is used for the upper jaw. And the bones around the roots of the lower jaw.
  • the abutment tooth itself particularly the periodontal ligament that firmly bonds the root to the jawbone by totally connecting the root and the bone around it, has not been damaged as much as possible and has become a social problem in recent years. Since the inventor has conceived a structure of a free-end denture that prevents the occurrence of accidental ingestion, a specific configuration thereof will be described below.
  • each constituent element is also shown in the drawings, but regarding the shape and dimensions of each constituent element in each drawing Do not exactly match each other. This ⁇ 2020/175 295 1 1 ⁇ (:171? 2020/006652
  • the vertical direction is defined with reference to the direction in which the upper side is the denture main body side (artificial tooth side) of the denture, and the lower side is the denture base side.
  • the plan view is a state viewed from the tip side of the tooth of the denture.
  • the parts to be hatched in the drawings are appropriately omitted to facilitate understanding of the explanation.
  • FIG. 1 is a side view showing a partial cross section of the structure of a denture and its attachment according to a first embodiment of the present invention.
  • FIG. 2 is a plan view showing a partial cross-section of the artificial tooth and its attachment shown in FIG.
  • FIG. 3 is a partially enlarged view of the denture and its attachment attachment shown in FIG.
  • FIG. 4 is a side view corresponding to FIG. 1 for explaining the operation of the artificial tooth and its attachment according to the first embodiment.
  • the reference numerals of the engaging portions of the denture and the abutment tooth are shown in detail in FIG.
  • a gap is drawn between the substantially spherical body of the protrusion provided on the metal crown and the engaging recess provided on the recessed engaging portion of the denture. This is shown for convenience of explanation.In reality, when a sufficient magnetic bowing force I of a magnet acts on a substantially spherical body made of a magnetic material, they will be explained in detail later.
  • the predetermined areas are engaged with each other in any of surface contact, line contact, and point contact.
  • the denture and its attachment attachment 1 (hereinafter, simply referred to as “denture and its attachment 1”) according to the first embodiment of the present invention are free end dentures attached to one abutment tooth 80. Consists of 10 and its mounting attachment 20.
  • the attachment attachment 20 is a metal attached to one abutment tooth 80. ⁇ 2020/175 295 12 boxes (:171? 2020 /006652
  • It has a metal mesh 200 and a protrusion 300 made of a magnetic material which is provided at a fixed position around the metal mesh 200, and at least the _ part of the peripheral surface is curved.
  • the metal crown 200 is a crown made of a metal that is used to treat the crown portion when it is damaged by caries or the like and to cover the crown.
  • the projecting portion 300 has a substantially spherical body 310 made of a magnetic material and a fixing portion 320 which forms a connecting portion between the substantially spherical body 310 and the metal crown.
  • the fixed part 320 is connected to the embedded fixed part 3 21 arranged in the metal crown, and one end of the fixed part 3 21 is connected to the embedded fixed part 3 21 so that it is exposed from the surface of the metal crown 2 0 0 and has a substantially spherical shape. It consists of the connection fixed part 3 2 2 connected to 0.
  • the connecting and fixing part 32 2 forms a connecting part between the substantially spherical body 3 10 and the embedded fixing part 3 21 and has a form of a part in contact with the surface of the metal crown 200.
  • the present invention has various forms, such as a part that slightly protrudes from the surface or a cylindrical part having a predetermined length.
  • connection fixing part 3 22 is smaller than the outer diameter of the substantially spherical body 3 10 and the free end denture 10 is fixed to the abutment tooth in the direction of the central axis of the connection fixing part 3 22.
  • the metal crown When viewed in a state of being attached to the metal crown, the metal crown extends from the lateral outer peripheral surface toward one end side facing the metal crown 200 of the free end denture.
  • the projecting portion 300 is made of a magnetic material as described above, and is made of, for example, a stainless steel or gold alloy, a platinum alloy, or the like, which is excellent in strength, durability and corrosion resistance.
  • the protruding portion 300 has the embedded fixing portion 321, which is attached to a part of the circumferential surface of the metal crown 200 by fusion with the third alloy when the metal crown 200 is formed and is gripped by the metal. , Or brazed, and the protruding portion 300 is projected from the peripheral surface of the metal crown 200 in the mounting direction of the free end denture 10.
  • the protruding portion 300 of the metal crown 200 is connected so that the extension line of the central axis of the connection fixing portion passes through the center of the substantially spherical body or the vicinity thereof. It is connected to the other end of the fixed portion 3 2 2.
  • the occlusal force is prevented as much as possible, and the occlusal force is distributed over the entire metal crown and is evenly transmitted to the root 8 2 and the periodontal ligament 8 3 via the crown 8 1.
  • the protrusion 300 of the metal crown 200 does not necessarily have to be such that the extension line of the central axis of the connecting and fixing portion 32 2 passes through the center of the substantially spherical body 3 10 or its vicinity. Need not be configured to do so. That is, even without such a configuration, the occlusal force applied to the free end denture 10 is transmitted to the entire metal crown, and this transmitted force is dispersed throughout the metal crown, so that the metal crown 2 0 0 It is within the scope of the present invention as long as it has a configuration capable of being almost uniformly transmitted to the tooth root 82 and the periodontal ligament 8 3 via.
  • the substantially spherical body 3 10 of the protruding portion 300 has a lower recessed portion 3 at the lower end portion on the base end side thereof, that is, a connecting portion with the connection fixing portion 3 2 2.
  • the tip of the lower end portion 1 3 5 extending from the lower end of the recessed engaging portion 1 3 0, which will be described later, is located in this lower recess portion 3 23. Is designed to come in and engage.
  • a magnet 140 which will be described later, applies a magnetic pulling force to the protruding portion 300 made of a magnetic material so that the free end denture 10 does not separate from the abutment tooth 80. Further, in the state shown in FIG. 3, the free end denture 10 is separated from the abutment tooth 80 by the tip 1 3 6 of the lower end portion 1 3 5 being caught in the lower recess 3 2 3 of the protruding portion 300. It helps to prevent it.
  • the free-end denture 10 is composed of at least one denture main body 1 1 0 (1 1 1, 1 1 2,
  • a denture base 1 20 that supports the denture body 1 1 0, a recessed engagement portion 1 3 0 located at the end adjacent to the abutment tooth 8 0, and a magnet holder 1 5 0 It has a magnet 140 which is housed in the denture main body 110 and is embedded in the denture base 120 and provided on the side of the joint with the free-end denture 10.
  • the magnet 140 is composed of two denture main bodies as shown in Fig. 1. ⁇ 2020/175 295 14 ⁇ (:171? 2020 /006652
  • the magnet 140 is arranged inside the denture main body, but if a part of it is arranged in the denture base or the size of the denture main body is small, It may be arranged only inside the denture base 120 below the denture body.
  • the magnets 140 are arranged so as to extend in alignment with the extending direction of the free end denture 10, the number of denture main bodies included in the free end denture 10
  • the size of the magnet 140 that is, the magnitude of the magnetic pulling force exerted on the substantially spherical body 310 made of a magnetic material can be adjusted in accordance with the above.
  • a sufficient amount of magnetic pulling force that makes it easy to remove the denture with a large number of dentures and with a long length in the longitudinal direction attached to the abutment tooth 80 is provided. It can be applied to the protrusion 300 which is a magnetic body provided on the metal crown 200 of the abutment tooth 80.
  • the recessed engaging portion 130 is formed integrally with the magnet holder 150.
  • the recessed engaging portion 1300 and the magnet holder 150 are made of, for example, stainless steel, which has excellent durability, strength, and corrosion resistance, and the magnet holder 150 is a denture made of denture resin. It is embedded in the main body 110 and the denture base 120.
  • the recessed engaging portion 130 and the magnet holder 150 do not necessarily have to be integrally formed, and they may be separately formed and tightly coupled to each other.
  • the magnet 140 is not exposed in the mouth of the denture wearer, and the material of the magnet 140 makes the user feel a sense of discomfort. It prevents debris from the magnet 140 from getting into your mouth.
  • the recessed engagement portion 130 has a protruding portion 300 fitted on the surface side facing the abutment tooth 80 when the free end denture 10 is attached to the abutment tooth 80. It has an engaging recessed portion 1 3 1. Further, the free end denture 1 0 was attached to the abutment 8 0 at the lower end 1 3 5 (lower end of FIGS. 1 and 3) on the denture base side of the recessed engaging portion 1 30. ⁇ 2020/175 295 15 ⁇ (:171? 2020/006652
  • the size of the engaging recessed portion 1 31 is such that they do not interfere with each other when they are inserted into the engaging recessed portion 1 3 1 to engage the protruding portion 300.
  • the protruding portion 300 is attracted by the magnet 140 provided in the free end denture 10 or the lower side thereof depending on the case. It is pressed against the engaging recessed portion 1 3 1 by the engaging force between the recessed portion 3 2 3 and the tip end 1 3 6 of the lower end portion 1 3 5.
  • the protruding portion 300 has the substantially spherical body 310, the recessed engaging portion
  • the 1300 is designed to move like a so-called universal joint with the protruding part 300 fitted in the engaging recess 1131 as a fulcrum. Specifically, the recessed engagement portion 130 that accommodates the protruding portion 300 in the fitted state moves within a predetermined center angle range with the center of the protruding portion 300 as the center of rotation. The extension direction of the free end denture 10 can be changed within a predetermined extension angle range with respect to the central axis of the abutment tooth 80.
  • the substantially spherical body 3 0 of 0 and the engaging recessed portion 1 3 1 are brought into contact with each other by face-to-face contact, line contact, or point contact with each other due to the magnetic pulling force of the magnet 1 40. I am supposed to keep it. This will be described in detail later.
  • the denture base 120 of the free end denture 10 intervenes saliva over its entire bottom surface. However, they are arranged so as to face the upper surface of the gingiva 85 which is in contact with each other with a constant space 3 1.
  • the upper end portion of 3 is closed by a part of the denture main body 110.
  • the bottom surface of the denture base 120 of the free end denture 10 is completely adhered to the upper surface of the gingiva 85 through the saliva layer in the mouth (see the part indicated by the dot in Fig. 1). , The free end denture 10 can be firmly attached to the abutment tooth 80 while maintaining a predetermined play.
  • the thickness of the saliva layer 0 shown by dots in FIGS. 1 and 3 is exaggeratedly drawn to facilitate understanding of the operation of the present invention.
  • the protruding portion 300 is fitted into the recessed engaging portion 130 and the protruding portion 300 At least a part (a considerable part in this embodiment) of the curved portion stays in the recessed engagement portion 130 due to the magnetic pulling force, and the relative position and relative position of the free end denture 10 with respect to the abutment tooth 80.
  • the angle can be changed within a predetermined range.
  • the free-end denture 10 is on the side opposite to the abutment 80 of the denture base 120 when the occlusal force acts on the denture main body 110 during occlusion (see Fig. 4).
  • the end (the right end in Fig. 4) of the base plate is designed to move around the protrusion 300 fitted into the recessed engaging part 1300 until it is pressed against the gum 85 and does not move. ..
  • the denture and its attachment attachment 1 have the above-described configurations, the following operational effects can be exhibited. Specifically, as shown in Fig. 4, at the time of occlusion, the end of the free end denture 10 opposite to the abutment tooth 80 is pressed against the gingiva 85 and pressed, and the free end denture 1 The end on the abutment tooth side of ⁇ can act a part of the occlusal force only in the axial direction of the abutment tooth 80 (change from the state shown in Fig. 1 to the state shown in Fig. 4 and in Fig. 4). (See bite 1).
  • Patent Document 1 in consideration of the embodied dimensions of each of the constituent elements, in reality, the mechanical strength that cannot be applied as a human denture is It just has a small size. In other words, it can be said that there is a fatal drawback that it requires structural fragility that cannot be used in actual dentistry.
  • the protruding portion 300 of the metal crown 200 and the engaging recessed portion 131 of the recessed engaging portion 1300 are provided. It can be understood that it is an essential requirement to have a connection structure of the denture and the attachment attachment thereof as in the present invention having a specific configuration.
  • the free end denture 10 has a shape in which the extending direction of the free end denture 10 maintains the same state as before occlusal even when occluded with respect to the central axis of the abutment tooth 80.
  • the generation of an unfavorable moment generated in the denture, that is, a moment that tilts the abutment tooth 80 with respect to the central axis line before the occlusion is suppressed.
  • the occlusal force before attaching the free end denture 10 to the abutment tooth 80 is the same as the degree of force exerted (the magnitude of the acting force and its action direction). It is possible to maintain the degree of force application (magnitude of acting force and its acting direction). As a result, the periodontal membrane 8 3 can be kept in a healthy state, the abutment tooth 80 can be long-lived without being damaged, and the free end denture 10 attached to the abutment tooth 80 can be used for a long period of time. it can.
  • the force exerted on the protruding portion 300 caused by the inclination of the free end denture 10 at the time of occlusion acts in the axial direction of the abutment tooth 80 as in the case of normal occlusion without a denture. Can be made.
  • This action suppresses the action of pulling the protrusion 300 toward the free end denture 1 0, that is, in the lateral direction intersecting the axial direction of the abutment tooth 80.
  • the free end denture 10 is supported by forming a space 31 between the gingiva 8 5 where the recessed engagement portion 130 and the denture base 120 of the free denture 10 contact. It is possible to easily and comfortably attach/detach the loose end denture 10 to/from the abutment 8 0 without the recessed engaging portion 1 30 being pressed against the gingiva 8 5 when being attached to or removed from the denture 80. You can
  • the size of the opening of the engaging recessed portion 1 3 1 is such that it does not interfere when the protrusion 3 0 0 is engaged to engage the protruding portion 300, and the attraction of the magnet 1 4 0
  • the dimensional tolerance between the opening of the engaging recessed portion 1 3 1 and the protruding portion 300 is strictly controlled. Without having to ⁇ 2020/175 295 19 ⁇ (:171? 2020/006652
  • the cost of the free end denture 10 can be reduced, and at the same time, the free end denture 10 can be easily attached/detached to/from the abutment tooth 80.
  • the tip 1 3 6 of the lower end portion 1 3 5 is formed in this recessed portion 2 2 2.
  • the extending direction of the free end denture 10 can be reasonably changed within the predetermined angle range with respect to the central axis of the abutment tooth 80. As a result, it is not necessary to apply an unreasonable force to the connecting portion between the abutment tooth 80 and the free end denture 10 during occlusion. Similarly, a denture wearer can be provided with a comfortable wearing feeling, and the abutment tooth 80 can be made to last longer without applying excessive stress to the abutment tooth 80.
  • the periodontal membrane 8 3 is kept in a healthy state, the abutment tooth 80 is made to last long without being damaged, and the free end denture 10 attached to the abutment tooth 80 is maintained for a long period of time. You can continue to use it.
  • the protruding portion 300 has the shape of a substantially spherical body 3 1 0, when the free end denture 10 is attached to or detached from the abutment tooth 80, the substantially spherical body 3 1 0 Using the curved surface of 0, it is possible to attach and detach smoothly without receiving resistance. Further, when pressing or pulling the free-end denture 10 against the abutment 80 with the attachment/detachment of the denture, it is possible to provide some degree of freedom in the pressing direction and the pulling direction. Easy to put on and take off. As a result, in particular, a denture wearer who cannot dexterously move his/her fingertips can easily attach/detach the abutment tooth 80 of the free end denture 10 by one person.
  • the free end denture 10 is unlikely to come off from the abutment 80 in normal use, and it is very easy to attach/detach the free end denture 10 by pinching it with fingers. ing.
  • the space 31 is formed between the gingiva 8 5 where the lower end portion 135 and the denture base 120 of the free-end denture 10 come into contact, so that the free-end denture After removing 1 0, there is a wider gap between the protruding portion 300 of the metal crown 2 00 and the gingiva 8 5 facing it.
  • a gap By creating such a gap, when the abutment tooth 80 is brushed with a toothbrush after removing the loose end denture 10, a sufficient gap is provided between the protruding portion 300 and the upper surface of the gum 85. Can be secured. As a result, it is possible to easily remove the food residue of the food accumulated in this gap, the food residue does not remain blocked, and it is possible to prevent the subsequent occurrence of tooth decay and bad breath.
  • the end (the upper end in FIGS. 1 and 3) opposite to the lower end 1 3 5 of the engaging recessed portion 1 3 1 is closed by a part of the denture main body 1 1 0. By doing so, it is possible to reliably prevent food from getting stuck in the engaging recessed portion 1 3 1 while the food is being bitten.
  • the groove width of the engaging recessed portion 1 3 1 is dimensioned so as not to interfere when the protrusion 3 0 0 is inserted to engage with the protruding portion 3 0 0, and is projected only by the attraction force of the magnet 1 4 0. Part 3 0 ⁇ 2020/175 295 22 ⁇ (: 171? 2020/006652
  • the magnetic force of the magnet 140 is set to be relatively strong, it is necessary to firmly connect the free end denture 10 to the abutment tooth 80 even if only the attractive force of the magnetic force is exerted. You can
  • connection fixing portion 3 22 is smaller than the outer diameter of the substantially spherical body 3 10 and the free end denture 10 is abutment in the direction of the central axis of the connection fixing portion 3 22.
  • the tooth 80 When attached to the tooth 80, it extends from the lateral outer peripheral surface of the metal crown 200 toward the end side of the free end denture 10 facing the metal crown 200.
  • the free end denture according to the present invention can be provided for a long period of time without causing mechanical stress exceeding the allowable range for strength in the protruding portion 300 and the engaging recessed portion 1 31. It is possible to continue to use by attaching the to the abutment tooth.
  • the connecting and fixing portion 3 2 2 plays a role as a fatigue fracture starting portion where the connecting and fixing portion 3 2 2 2 is broken and the protruding portion 300 is divided into two.
  • Fig. 5 is a partially enlarged view of a denture and a mounting attachment thereof according to a modification of the first embodiment.
  • the shape of the lower end portion 1 35 of the first embodiment is changed to the lower end portion 1 37 of a simpler configuration.
  • the lower portion of the protruding portion 300 of the first embodiment is formed between the substantially spherical body 3 10 and the connection fixing portion 3 22.
  • the tip 1 3 9 of the lower end 1 3 7 does not enter the lower recess 3 2 3.
  • the free end denture 10 can be used as the abutment tooth 80 even with the shape of this modification. Can be firmly attached. That is, as in the above-described first embodiment, the lower end portion 1 3 is formed in the lower concave portion formed in the connecting portion of the connecting and fixing portion 3 2 2 of the protruding portion 3 0 0 and the substantially spherical body 3 1 0. It is not necessary to engage the tips 1 3 6 of 5 and use this engaging force as an auxiliary force in addition to the attraction force of the magnet 1 4 0. As a result, a complicated structure for preventing the protruding portion 300 from separating from the engaging recessed portion 1 31 can be omitted. That is, the shape of the lower end 1 3 5 ⁇ 2020/175 295 24 ⁇ (: 171? 2020/006652
  • the magnet 140 since the magnet 140 has the special arrangement form as described above in the free end denture, the degree of freedom in designing the magnet 140 is increased, and even such a modification is possible. It turns out that it can be easily realized.
  • FIG. 6 is an explanatory view showing an example of the attachment positions of the artificial tooth and its attachment attachment 1 according to the first embodiment of the present invention shown in FIGS.
  • the free end denture 10 according to the first embodiment is attached to the abutment tooth 80 at the missing back teeth on both sides of the lower tooth. It may be attached to the missing part of the upper teeth.
  • the free end denture 10 is opposite to the side where it is connected to the abutment tooth 80, and is a free end that is difficult to see from the outside even if the mouth is wide open.
  • a fixing tool may be provided, and the free end denture 10 may be more firmly attached by engaging with the remaining teeth on the free end side.
  • FIG. 7 is a side view showing a partial cross-section of the structure of the denture and its attachment according to the second embodiment of the present invention.
  • FIG. 8 is a side view showing the structure of the denture and its attachment shown in FIG. 7 in a partially cutaway view.
  • FIG. 9 is a plan view showing the denture shown in FIG. 8 and its attachment attachment in a partial cross section.
  • the maximum outer diameter of the substantially spherical body 410 of the protruding portion 400 is larger than that of the substantially spherical body insertion side opening 162 of the engaging recessed portion 161. It is slightly larger than the width 1 6 2 3 .
  • the shape of the connecting fixing portion 3222 of the protruding portion 300 is also different from that of the first embodiment, and has a columnar shape, and the periphery thereof is exposed to the outside.
  • the width 1 6 1 3 (see FIG. 9) of the abutment side opening of the engagement recess portion 1 6 1 abutment 8 0 by the pushing force and pulling force by the finger of denture wearers In order to be able to attach/detach the loose end denture 1 0, in addition to the magnetic pulling force that the magnet 1 40 exerts on the protrusion 4 0 0 when the free end denture 1 0 is attached, the engaging recess 1 It is dimensioned so as to prevent the protruding portion 400 from coming off from the recessed portion 161, due to the engaging force exerted by the opening portion of 61 on the protruding portion 400.
  • the width 1 6 1 3 of the abutment tooth side opening of the engaging recessed portion 1 61 of the recessed engaging portion 1 6 0 is the most of the protruding portion 4 0 0.
  • the wide part, that is, the diameter of the substantially spherical body 4 10 in Fig. 8 is slightly narrower than the diameter 4 103, and the width 1 61 in the recess is the maximum outer diameter of the substantially spherical body 4 10. It is slightly wider than 4 103.
  • Free end dentures 10 will no longer come off easily from 0, and even relatively hard foods can be chewed and eaten firmly while still tasting sufficiently and easy to digest.
  • the magnet 140 can be downsized, which is suitable for the case where the number of denture main bodies is as small as one or two and the size of the denture itself is small.
  • the tip shown in Fig. 5 has a hook shape. ⁇ 2020/175 295 26 ⁇ (:171? 2020 /006652
  • FIG. 10 is various explanatory views showing the engagement state of the denture and its attachment attachment, which are common to the first embodiment of the present invention, the modified example thereof, and the second embodiment.
  • FIG. 11 is a continuation of FIG. 10 and various explanatory views showing the engagement state of the denture and its attachment attachment common to the first embodiment and its modification of the present invention and the second embodiment. is there.
  • FIG. 12 is a continuation of FIG. 11 and various explanatory views showing the engagement state of the denture and its attachment attachment common to the first embodiment of the present invention and its modification, and the second embodiment. Is.
  • Figs. 10 to 12 the substantially spherical body of the protruding portion provided in the metal crown, the fixing portion including the connecting fixing portion and the embedded fixing portion for fixing the protruding portion to the metal crown, and the recessed engagement of the denture Regarding the size and shape of the engaging recesses provided in the parts and the mutual contact relationship between the respective constituent elements, in order to facilitate understanding of the present invention, different dimensional relationships and mutual contact relationships from the actual Are drawn respectively.
  • the arrows of the trajectories shown in Figs. 10 to 13 indicate the directions of the orthogonal coordinate system in each of them, and in the X direction, assuming that the free end denture is attached to the abutment tooth on the inferior condyle side. Is the forward direction, which is perpendicular to the longitudinal direction of the installed free denture, and the ⁇ 2020/175 295 27 ⁇ (:171? 2020 /006652
  • the longitudinal direction of the installed free denture 10 is the upper direction of the free denture 10 installed on the mandibular abutment 80 (only a part is shown in FIGS. 10 to 13), that is, And the direction of the upper teeth on the upper jaw, which is vertically upper.
  • the substantially spherical body 310 is recessed in the substantially spherical body 310 in the actual movable range of the denture like the operation of a universal joint in which the free end denture on the right side in the figure responds to occlusion.
  • the free end denture 1 0 is configured to move while sliding on each other while maintaining surface contact with the inner peripheral surface of the engaging recessed portion 1 3 1 of 1 3 0.
  • the occlusal force acting on the free end denture 10 is dispersed in the entire metal crown, and the abutment tooth is pressed down evenly through the metal crown 200.
  • connection fixing portion 3 2 2 in the fixing portion 3 20 is slightly smaller than that in FIGS. 1 to 9.
  • the shape is not particularly limited as long as it does not interfere with the normal slight movement of the free end denture 10 during occlusion. It goes without saying that there is no problem even if the same form is used.
  • Fig. 10 (13 _ 1) the outer peripheral surface of the curved portion of the substantially spherical body 310 and a part of the inner peripheral surface inside the recessed portion of the free end denture 10 (actually a considerable portion)
  • Fig. 10 (Saiichi 2) the curved surface of the substantially spherical body 3 10 and the engaging recessed portion 1 3 1
  • the inner surface shows point contact.
  • Fig. 10 (10-3) and Fig. 10 (13-4) the reverse of the explanation of Fig. 10 (Taiichi 1) and Fig. 10 (Taiichi 2) is shown. It is drawn in the drawing.
  • Such a portion where the curved surface of the substantially spherical body 310 and the inner peripheral surface of the engaging recessed portion 1 31 are in line contact with each other has a occlusal state in a state in which the free end denture 10 is occluded. Accordingly, depending on what kind of three-dimensional occlusal force acts, it gradually changes between the curved surface of the substantially spherical body 310 and the inner peripheral surface of the engaging recess 1131.
  • Fig. 11 ( ⁇ -1) and Fig. 11 ( ⁇ -2) the free end denture 10 is attached to the abutment tooth 80 as described above, and the state before occlusion is shown.
  • the tip of the curved surface of the substantially spherical body 310 (the part on the right side in the figure) is located on the inner peripheral surface of the engaging recess 1 3 1 due to the magnetic pulling force of the magnet 140. There is a point contact at the innermost position.
  • Fig. 11 ( ⁇ _3) and Fig. 11 ( ⁇ _4) after mounting the free end denture 10 on the abutment tooth 80, the upper and lower abutment teeth 80 and the free end tooth The denture 10 is occluded and the denture base 120 of the free end denture 10 is pressed against the gingiva. This can be seen from the fact that the recessed engaging portion 130 moves in the downward direction (one side in the axial direction) as shown in Fig. 11 ( ⁇ _3).
  • the denture 10 moves from the state shown in Fig. 11 ( ⁇ -6) in the ten directions of the X-axis, and It can be understood that the dentures are shifted in one direction in parallel with the gingiva and the food is crushed to mash the food.
  • the food biting by shifting is mashed in the opposite direction to the previous state.
  • the denture 10 moves toward the ten directions of the X axis and crushes food while crushing food while shifting the denture parallel to the gingiva so as to face the ten directions of the toe axis. It can be understood.
  • FIG. 12 (_ 1) and Fig. 12 (_ 2) show a substantially hemispherical shape (a so-called mushroom type) instead of the substantially spherical body 3 10 provided in the protrusion 300.
  • FIG. 8 is an explanatory diagram showing an engagement state of the recessed engaging portion 1 30 of the free end denture 1 0 with the engaging recessed portion 1 3 1 when the hemispherical body 3 50 is used.
  • the curved portion formed on at least a part of the above-mentioned substantially hemispherical body 350 and the curved surface of the inner surface of the engaging recessed portion 1 31 are as described above.
  • the free end denture 10 is actually used as the abutment tooth.
  • one end of the abutment tooth 80 is projected as described above. It is connected to the part 300 as a universal joint, and the other end of the denture base 120 of the free end denture 10 is pressed as the free end to the gingiva 8 5 and moves continuously within the range of deviation.
  • the extremely large hemispherical recess at the tip of the rod-like member provided relatively above the denture to be attached at the time of occlusion is extremely large as described above. Since the occlusal force acts, the part in which the occlusal force locally acts at the time of occlusal acts in a direction away from the abutment tooth due to the food grinding operation as described above.
  • a tensile force acts on a relatively upper portion of the metal crown 200 of the abutment tooth 80, and a moment is applied in a direction in which the abutment tooth itself falls, and the root of the abutment tooth 80 is rooted.
  • a part of the membrane 8 3 (the fiber tissue of the periodontal membrane 8 3 covering the root of the root of the periodontal membrane 8 3 on the free end denture side is crushed and the fibrous tissue of the periodontal membrane 8 3 in the opposite direction is stretched That is, since the free-end denture described in Patent Document 1 is attached, the periodontal membrane 8 3 is damaged and the abutment tooth itself swings, and if this is left unattended, the abutment tooth 8 3 The worst result is that the root of 0 8 2 is dropped out.
  • the engaging recessed portion 1 3 1 of the free end denture 1 0 is engaged with the protrusion 3 0 0 protruding from the substantially central portion of the side surface of the metal crown 2 0 0.
  • the occlusal force of the metal crown is applied through the substantially spherical body 3 10 of the protruding portion 300 and the connection fixing portion 3 2 2 while making it possible to respond to the complicated movement peculiar to the free end denture during occlusion. It is possible to disperse the occlusal force over the whole, and to act part of the occlusal force almost vertically by moving the abutment tooth 80 downward from above toward the root through the entire metal crown.
  • the wearer of the free-end denture 10 can be used in daily life. Can also enjoy a great deal of merits. This point will be described in detail below.
  • the holding force of the denture on the abutment tooth becomes small, which causes an extremely inconvenient problem in daily life unrelated to the occlusion.
  • a denture is worn around the front teeth, when sneezing, the body suddenly moves around the mouth and the force from the lungs to the outside of the mouth through the mouth is increased. Frequent breathing may cause the denture itself to come off and fall out of the mouth.
  • the free end denture is attached around the anterior tooth of the epicondyle, such a risk becomes high.
  • the rod-shaped magnet that acts on the protrusion of the denture which is the magnetic body of the abutment tooth, exerts a magnetic pulling force is aligned with the extending direction of the denture. It is arranged so as to extend.
  • magnets are arranged inside the free-end denture along the extending direction of the denture base.
  • the size of the magnet that is, the magnitude of the magnetic pulling force exerted on the substantially spherical body made of the magnetic material can be adjusted according to the number of denture main bodies included in the denture.
  • a sufficient amount of magnetic pulling force is applied to the abutment tooth when a free-end denture with a large number of denture bodies and a long length in the longitudinal direction is easily attached to the abutment tooth. It is possible to act on the protruding portion which is a magnetic body provided in the. ⁇ 2020/175 295 34 ⁇ (:171? 2020 /006652
  • the magnet may be in the form of a permanent magnet as a so-called bar magnet and arranged in the above-described special structure.
  • the magnet itself may be an elongated square pole bar magnet, or a dentate shape. Magnet, slender columnar shape or slender columnar shape with polygonal end view ⁇ 2020/175 295 35 ⁇ (:171? 2020 /006652
  • the present invention can be applied with its sufficient action and effect, and it is clear that it belongs to the scope of the present invention.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Prosthetics (AREA)

Abstract

L'invention concerne des prothèses dentaires adaptées à un porteur de prothèse dentaire qui procurent une sensation de mastication confortable pendant les repas ; et une fixation de montage pour les prothèses dentaires.　La fixation de montage (20) comprend une couronne métallique (200) qui se fixe à une butée, et une partie en saillie (300) qui comprend un matériau magnétique et qui est disposée sur la périphérie de la couronne métallique (200). Une prothèse dentaire comprend une partie de mise en prise évidée (130) qui comprend une prothèse dentaire à extrémité libre (10) et qui est positionnée sur un côté d'extrémité adjacent à une butée (80), et un aimant (140) qui est placé sur un côté de charnière relié à la prothèse dentaire à extrémité libre. La prothèse dentaire à extrémité libre est en contact avec la butée en raison de la mise en prise de la partie saillante avec la partie de mise en prise évidée, et une force de traction magnétique qui agit sur la partie saillante de l'aimant empêche la prothèse dentaire à extrémité libre de se séparer de la butée. La partie saillante se loge dans la partie de mise en prise évidée et au moins une partie d'une section incurvée de la partie de mise en prise est retenue à l'intérieur de la partie de mise en prise évidée par une force magnétique, la position relative et l'angle relatif de la prothèse dentaire à extrémité libre pouvant changer par rapport à la butée selon une plage prescrite.
PCT/JP2020/006652 2019-02-27 2020-02-19 Prothèses dentaires et fixation de montage pour celles-ci WO2020175295A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2019-034870 2019-02-27
JP2019034870A JP6598275B1 (ja) 2019-02-27 2019-02-27 義歯とその取付けアタッチメント
JP2019-194764 2019-10-25
JP2019194764A JP6777801B1 (ja) 2019-10-25 2019-10-25 遊離端義歯とその取付けアタッチメント

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113262064A (zh) * 2021-05-18 2021-08-17 深圳市金悠然科技有限公司 一种具有半球型磁铁的组合义齿及其制备方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4362509A (en) * 1980-11-20 1982-12-07 Sulc Josef M Dental attachment structure
JPS612210U (ja) * 1984-06-11 1986-01-08 株式会社 モルテン 部分床義歯のダルボ・アタツチメント構造
JP3054058U (ja) * 1998-05-14 1998-11-17 曾 憲 榮 固定具付義歯
JP2001170081A (ja) * 1999-12-20 2001-06-26 Gc Corp 有床義歯用アタッチメント
JP2003135490A (ja) * 2001-11-08 2003-05-13 Masaharu Araki 歯冠補綴具、有床義歯固定具及びそれを備えた有床義歯、並びに歯冠補綴具の製造方法
JP2004097591A (ja) * 2002-09-11 2004-04-02 Hitachi Metals Ltd 義歯用磁性アタッチメント
JP2011092273A (ja) * 2009-10-27 2011-05-12 O Plan Laboratory Co Ltd 部分義歯

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4362509A (en) * 1980-11-20 1982-12-07 Sulc Josef M Dental attachment structure
JPS612210U (ja) * 1984-06-11 1986-01-08 株式会社 モルテン 部分床義歯のダルボ・アタツチメント構造
JP3054058U (ja) * 1998-05-14 1998-11-17 曾 憲 榮 固定具付義歯
JP2001170081A (ja) * 1999-12-20 2001-06-26 Gc Corp 有床義歯用アタッチメント
JP2003135490A (ja) * 2001-11-08 2003-05-13 Masaharu Araki 歯冠補綴具、有床義歯固定具及びそれを備えた有床義歯、並びに歯冠補綴具の製造方法
JP2004097591A (ja) * 2002-09-11 2004-04-02 Hitachi Metals Ltd 義歯用磁性アタッチメント
JP2011092273A (ja) * 2009-10-27 2011-05-12 O Plan Laboratory Co Ltd 部分義歯

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113262064A (zh) * 2021-05-18 2021-08-17 深圳市金悠然科技有限公司 一种具有半球型磁铁的组合义齿及其制备方法

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