WO2020138123A1 - Prothèse dentaire et fixation pour la monter - Google Patents

Prothèse dentaire et fixation pour la monter Download PDF

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Publication number
WO2020138123A1
WO2020138123A1 PCT/JP2019/050717 JP2019050717W WO2020138123A1 WO 2020138123 A1 WO2020138123 A1 WO 2020138123A1 JP 2019050717 W JP2019050717 W JP 2019050717W WO 2020138123 A1 WO2020138123 A1 WO 2020138123A1
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WO
WIPO (PCT)
Prior art keywords
denture
tooth
teeth
abutment
intermediate missing
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PCT/JP2019/050717
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English (en)
Japanese (ja)
Inventor
正 河北
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正 河北
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Application filed by 正 河北 filed Critical 正 河北
Publication of WO2020138123A1 publication Critical patent/WO2020138123A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/225—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 and its attachment attachment.
  • the clasp itself may be cut due to extreme stress being applied to part of the clasp or fatigue fracture due to long-term use, and the cut end cuts into the gingiva and may cause an unexpected injury. May cause Furthermore, a part of such a clasp may be broken into fragments, which may be swallowed without noticing it, resulting in an unexpected poor physical condition due to accidental ingestion of a foreign substance.
  • the dentures disclosed in the prior art documents 1 to 3 are configured by using magnets, but the so-called play is not provided to the abutment teeth to which the magnets are attached, that is, the upper teeth and the lower teeth. Can be attached without any deviation in the occlusal direction and the direction orthogonal to this direction.
  • the occlusal force will be applied directly to the denture during occlusion.
  • the magnet mounting portion may be damaged, and a part of the magnet may be accidentally swallowed, resulting in a dangerous state.
  • the occlusal force directly acts only on the abutment tooth, and the periodontal ligament that serves as a cushion is crushed in the abutment tooth ( It will eventually cause a loss of the abutment tooth.
  • An object of the present invention is to provide a denture and its attachment attachment that can be easily attached to and detached from an abutment tooth, and that can give a denture wearer an excellent wearing feeling and a comfortable bite during eating. ..
  • the denture and its attachment according to claim 1 of the present invention are In a denture and its attachment attachment for mounting a denture for an intermediate missing tooth by using two teeth sandwiching a tooth missing part of a few remaining teeth as abutment teeth at both ends,
  • the attachment attachment is provided with a metal crown to cover each of the abutment teeth, and the abutment on the peripheral surface of the metal crown provided at a predetermined position around the metal crown with the metal crown covering the abutment teeth.
  • the denture for intermediate missing teeth has at least one denture body, a denture base to which the denture body is attached, and a ridge sliding engagement for attaching the denture for intermediate missing teeth to each abutment tooth located at both ends thereof. And a ridge for slidingly inserting a ridge protruding portion provided on the metal crown to cover each of the abutment teeth when the artificial tooth for intermediate missing tooth is attached to the abutment tooth.
  • a dynamic engaging portion and magnets respectively housed in the vicinity of both ends of the artificial tooth for intermediate missing teeth and inside the joint portion side with the two abutment teeth,
  • Each of the magnets has a shape of a bar magnet and is housed inside the denture for intermediate missing tooth, and the longitudinal direction of each magnet is substantially the same as the longitudinal direction of the entire denture for intermediate missing tooth.
  • the denture base for the intermediate missing tooth is coupled with the denture base for the intermediate missing tooth while the denture for the intermediate missing tooth is joined to the denture base for the intermediate missing tooth by engaging the ridge protruding portion with the ridge sliding engagement portion.
  • the denture for intermediate missing teeth is attached to the two abutment teeth.
  • each magnet provided in the artificial tooth for intermediate missing tooth exerts a magnetic pulling force on the ridge protruding portion of the metal crown provided near each of them.
  • the denture for intermediate missing teeth is prevented from coming off from the two abutment teeth, and the denture for intermediate missing teeth is held between the two abutment teeth by the magnetic pulling force.
  • the denture for intermediate missing teeth is pressed against the gingiva to receive the opposing occlusal force applied to the denture for intermediate missing teeth and the abutment teeth at both ends of the denture, and the denture base receives the occlusal force.
  • each of the ridge protrusions does not hit the denture main body side end of the ridge sliding engagement portion, and the two are separated with a certain space.
  • the denture While the certain space remains even in a strongly occluded state, the denture itself presses the gingiva through the denture base of the denture for intermediate missing teeth, and the periodontal membrane of the abutment tooth by the occlusal force. It is characterized by preventing it from being crushed.
  • the merit as a mucosa-bearing denture can be maximized. That is, the dentures for intermediate missing teeth can be attached to the two abutment teeth sandwiching the dentures without affecting the abutment teeth of a denture wearer whose abutment tooth periodontal membrane is damaged.
  • the denture for intermediate missing tooth according to the present invention when the denture for intermediate missing tooth according to the present invention is attached to the abutment teeth at both ends, all of the various problems described in the section of the problem to be solved by the present invention can be solved at once. .. That is, since both ends of the denture for intermediate missing teeth are slidable in parallel with each abutment tooth with some play as described above, only the vertical direction defined by this so-called play is intermediate.
  • the denture for missing teeth can also be moved. This allows the denture to be pressed by the occlusal force on the opposite side during occlusion with appropriate movement toward the gingiva, and the denture base to be pressed (beared) by being pressed against the gingiva. , It is possible to occlude without adding extra load to the alveolar periodontal ligament.
  • the denture wearer can feel comfortable wearing the denture when it occludes.
  • a problem such as the case where the denture is fixed to the abutment teeth at both ends without any play. That is, in the conventional case, if the denture is mounted higher than the abutment teeth at both ends, the occlusal force received from the teeth on the opposite side during occlusion concentrates on the both-end supporting denture, and the denture is easily damaged.
  • the joint with the damaged abutment tooth hurt the gums, in some cases, a part of the joint itself was broken into the mouth and caused accidental ingestion. According to the embodiment, such a problem does not occur.
  • a denture and its attachment according to claim 2 of the present invention are the denture and its attachment according to claim 1.
  • a predetermined space is formed between the gingiva-side end of the convex protrusion and the gingiva facing the gingiva. ..
  • a denture and its attachment attachment according to claim 3 of the present invention are the denture and its attachment attachment according to any one of claims 1 and 2. It is characterized in that the metal crown is provided with a protrusion capable of sliding in the groove instead of the protrusion protrusion.
  • the action of the denture according to the present invention for attaching the denture for intermediate missing teeth and its attachment attachment can be sufficiently exerted.
  • the denture and its attachment attachment according to claim 4 of the present invention are the denture and its attachment attachment according to any one of claims 1 to 3.
  • An implant is used instead of a natural tooth as the abutment tooth, and the metal crown is attached to the implant.
  • the denture and its attachment attachment play an extremely useful role even when it is necessary to prevent the occlusal force from being applied to the implant as an abutment tooth according to the age and occlusal force of the denture wearer.
  • a denture for intermediate missing teeth according to claim 5 of the present invention is A denture for intermediate missing teeth, which is attached to the metal crown according to any one of claims 1 to 3.
  • metal crown according to claim 6 of the present invention A metal crown which is attached to the denture for intermediate missing teeth according to any one of claims 1 to 3.
  • the present invention it is possible to provide a denture and its attachment which can easily attach and detach the denture and can give the denture wearer an excellent wearing feeling and a comfortable bite during eating.
  • FIG. 3 is a partial side view showing a partial cross-section of the denture and its attachment according to the embodiment of the present invention. It is a top view which shows the denture and its attachment shown in FIG. 1 by a partial cross section. It is a partial side view corresponding to FIG. 1 for explaining the operation of the present embodiment. It is explanatory drawing which shows an example of the attachment position of the artificial tooth and its attachment attachment which concern on this embodiment shown in FIG.1 and FIG.2. A plan view (FIG. 5A) partially showing the present embodiment shown in FIGS. 1 and 2, and a plan view (FIG.
  • the present invention relates to a mucosa-bearing denture.
  • mucosa-bearing dentures we will describe the definition and technical significance of mucosa-bearing dentures.
  • the alveolar periodontal ligament is considerably damaged with age, while the alveolar periodontal ligament is in a healthy state. Some people keep it.
  • the occlusal force acts not only on the denture but also on the abutment tooth.
  • the membrane is compressed accordingly and the periodontal ligament is further damaged. If the periodontal ligament is extremely damaged, the abutment tooth itself cannot bear the burden of attaching the denture, and the abutment tooth will eventually be lost.
  • the occlusal force is applied to the denture base of the denture (free-end denture or denture for intermediate missing teeth). It is preferable to utilize a mucosa-bearing denture (provided in the present invention) that exerts an action of receiving (bearing) this occlusal force by pressing the gingiva and pressing the denture itself to sink.
  • the above reasons will be supplemented by more objective explanations.
  • the occlusal force is extremely large, about 3 MPa to about 9 MPa (average 30 kg to 90 kg per 1 cm 2 (300 to 900 tons per 1 m 2 )). Therefore, even if a healthy periodontal ligament can bear the burden, if the periodontal disease does not cause a healthy periodontal ligament, the burden becomes excessive and pain occurs during occlusion. Further, there are many cases in which the periodontal ligament is damaged and the tooth is extracted.
  • the above-mentioned mucosa-bearing denture is a suitable selection means.
  • each component is also shown in the drawings, but the shapes and dimensions of each component in each drawing are not exactly the same. This is because all of these differences in shape and size are naturally included in the scope of the present invention, and therefore are made different for the sake of convenience of explanation. Therefore, it should be added that the difference in the shape and dimensional relationship of each constituent element in each drawing has no influence on the scope of the present invention.
  • the vertical direction is defined with the upper side being the artificial tooth (prosthesis main body) side of the denture and the lower side being the denture base side.
  • the plan view is a state viewed from the tip side of the tooth of the denture.
  • hatching is omitted as appropriate to facilitate understanding of the description.
  • the invention according to this embodiment relates to the invention of a mucosa-bearing denture.
  • the contents described at the beginning of the mode for carrying out the invention are applied.
  • FIG. 1 is a partial side view showing a partial cross-section of a denture and its attachment according to an embodiment of the present invention.
  • FIG. 2 is a plan view showing the denture shown in FIG. 1 and its attachment attachment in partial cross section.
  • FIG. 3A is a partial side view corresponding to FIG. 1 for explaining the operation of the present embodiment.
  • FIG. 1 only the left side portion of the denture is shown, but the right side has the same configuration, so the right side is omitted and the left side reference numeral is given in parentheses to the right side omitted portion. I am trying.
  • a denture and its attachment attachment 2 (hereinafter, simply referred to as “denture and its attachment 2” as appropriate) are two double-end abutment teeth sandwiching a tooth loss portion of a small number of remaining teeth.
  • 91 and 92 (90) are a denture for attaching the artificial tooth 50 for intermediate missing tooth via the attachments 60, 70, respectively, and the attachment.
  • the attachments 60, 70 are the base ends of the abutment teeth 91, 92(90) on the peripheral surface of the metal crowns 610, 710 with the metal crowns 610, 710 covering the abutment teeth 91, 92(90), respectively.
  • the projections 630 and 740 are made of a magnetic material and extend from the portion toward the tip.
  • the denture 50 for intermediate missing teeth has at least one denture main body 510 (511, 512, 513,... ), a denture base 520 to which the denture main body 510 is attached, and a denture 50 for intermediate missing teeth at both ends thereof.
  • the magnets 550 and 560 housed therein are provided inside the joint portion side between the protruding strip sliding engagement portions 530 and 540 that fit in a possible state and the two abutment teeth 91 and 92 (90) near both ends of the artificial tooth 50 for intermediate missing teeth.
  • the magnets 550 and 560 housed therein are provided.
  • the magnets 550 and 560 each have the form of a bar magnet.
  • the magnet holders 570 and 570 are provided inside the denture bodies on both ends of the denture for intermediate missing teeth, respectively. It is housed inside 580.
  • One of the magnetic poles of the magnets 550 and 560 is arranged close to the ridge protrusions 630 and 740, and the other of the magnetic poles is arranged at a position away from the ridge protrusions 630 and 740. That is, the magnets 550 and 560 are arranged so that the longitudinal direction thereof substantially coincides with the longitudinal direction of the entire intermediate defect denture.
  • the magnets 550 and 560 are made of a magnetic material so that a sufficient amount of magnetic pulling force is applied to the protrusions 630 and 740 in a direction substantially corresponding to the extending direction of the intermediate defect denture 20. It has become.
  • the magnets 550 and 560 are arranged inside the denture main body, but if some of them are arranged in the denture base or the size of the denture main body is small, It may be arranged only inside the lower denture base 120.
  • the magnets 550 and 560 are arranged so as to extend along the extending direction of the intermediate defect denture 20, the magnets 550 and 560 are arranged according to the number of denture main bodies included in the intermediate defect denture 20. It is possible to adjust the size of 550 and 560, that is, the size of the magnetic pulling force exerted on the protruding projections 630 and 740 made of a magnetic material. As a result, a sufficient amount of magnetic pulling force that makes it difficult for the dentures 20 having a large number of denture bodies to be easily detached when the dentures 20 for intermediate defect having a long length in the longitudinal direction are attached to the abutment teeth 80. It is possible to act on the protruding projections 630 and 740 that are magnetic bodies provided in the metal crown 210 of FIG.
  • the ridge protrusions 630 and 740 have a substantially circular shape in end view (plan view) as shown in FIGS. 9 and 1A, and the ridge sliding groove portions 531 and 541 are convex.
  • the convex linear protrusions 630 and 740 have a substantially circular cross-sectional shape slightly larger than the outer diameter of the circular outline in plan view.
  • the convex strip sliding engagement portions 530 and 540 formed at both ends of the artificial tooth 50 for intermediate missing tooth are formed integrally with the magnet holders 570 and 580 extending to the opposite side to the protruding side, respectively.
  • the ridge sliding engagement portions 530 and 540 and the magnet holders 570 and 580 are also made of, for example, stainless steel having excellent durability, strength, and corrosion resistance, and the magnet holders 570 and 580 are made of resin for dentures. Embedded in the denture body 510. As a result, the magnets 550 and 560 housed in the magnet holders 570 and 580 are not exposed to the outside of the artificial tooth 50 for intermediate missing teeth.
  • the present embodiment is arranged in a state of being housed inside the magnet holders 570 and 580 as described above, and the portions of the magnet holders 570 and 580 are embedded in the denture body 510 made of denture resin.
  • the magnets 550 and 560 are not exposed in the mouth of the denture wearer, and the material of the magnets 550 and 560 makes the user feel uncomfortable in taste, or the fragments of the magnets 550 and 560 are put in the mouth. It prevents people from entering.
  • the ridge protrusions 630, 740 slidably engage the ridge sliding engagement portions 530, 540, so that the artificial tooth 50 for intermediate missing tooth has two abutment teeth 91, 92 (90).
  • the denture base 520 of the denture 50 for intermediate missing teeth comes into close contact with the gingiva 800 while interposing saliva over the entire bottom surface of the denture 50, so that the denture 50 for intermediate missing teeth is provided with two abutment teeth 91, 92 ( 90).
  • the magnets 550 and 560 included in the denture 50 for intermediate missing teeth exert a magnetic pulling force on the protruding projections 630 and 740 of the metal crowns 610 and 710 provided in the vicinity of the magnets 550 and 560, respectively.
  • the 50 is prevented from coming off from the two abutment teeth 91, 92 (90).
  • the artificial tooth 50 for intermediate missing tooth is generated by a magnetic pulling force between the two abutment teeth 91, 92 (90).
  • the protruding projections of the metal crowns 610, 710 are provided. 630 and 740 are slidable within the convex strip sliding engagement portions 530 and 540 of the artificial tooth 50 for intermediate missing teeth.
  • a predetermined gap is provided between the gingiva-side denture base side end portions 530a, 540a of the convex slide sliding engagement portions 530, 540 and the gingiva 800 facing the denture base side ends 530a, 540a.
  • the spaces S3 and S4 are formed.
  • the denture tip side end portions 530b, 540b of the ridge sliding engagement portions 530, 540 serve as stoppers for sliding movement of the ridge protruding portions 630, 740, and are closed by the inner portion of the denture main body 510. It is peeled off so that food scraps of food do not get into the ridge sliding engagement portion when the user bites a tooth when eating food.
  • the denture base 520 pushes saliva D by the occlusal force during occlusion and presses the gingiva 800 to sink the denture itself, so that the ridge protrusions 630 and 740 slide in the ridge sliding engagement portion.
  • the ridge protrusions 630, 740 slide in the ridge sliding engagement portion.
  • the upper end portions of the ridge protrusions 630, 740 and the ridge slide engagement parts 530 opposing thereto are Constant spaces S5 and S6 are formed between the denture front end portions 530b and 540b of the 630.
  • the ridge protrusions 630 and 740 can leave a margin for further sliding up in the ridge sliding engagement portion, and even if the tooth is strongly bitten, the occlusal force is affixed to the abutment tooth 91. , 92 to prevent the deterioration of the periodontal ligaments 81 and 82 without crushing the periodontal ligaments 81 and 82.
  • the denture base side end portions 530a, 540a of the convex slide sliding engagement portions 530, 540 are open, and when the intermediate missing tooth denture 50 is attached to the abutment teeth 91, 92 (90), the abutment teeth The upper ends of the protrusions 630 and 740 of the protrusions 91 and 92 (90) can be inserted into the protrusion sliding groove portions.
  • the convex strip sliding engagement portions 530, 540 at both ends of the artificial tooth 50 for intermediate missing tooth are fixed to the abutment teeth.
  • the denture wearers can easily insert the ridges 630 and 740 of the ridges 91 and 92 (90) at the same time without difficulty, and the denture wearer can easily attach the denture 50 for intermediate missing teeth to the abutment teeth 91 and 92 (90). It will be possible.
  • the corner edges at the upper ends of the protruding projections 630, 740 are chamfered or tapered.
  • the lower end openings of the groove portions 531 and 541, which are formed on the denture base side end portions 530a and 540a of the ridge sliding groove portions 531 and 541 and into which the ridge protruding portions 630 and 740 enter, are chamfered as a whole. It is preferable that it has a tapered shape.
  • FIG. 4 is an explanatory diagram showing an example of the attachment positions of the denture and its attachment attachment 2 according to the present embodiment shown in FIGS. 1 and 2.
  • the denture 50 for intermediate missing tooth according to the present embodiment is attached by sliding the abutment teeth 91, 92 (90) sandwiching the denture 50 from above, and Similarly, the artificial tooth 50 for intermediate missing teeth may be slid from below and attached to the missing portion of the tooth sandwiched by the upper two teeth.
  • the magnets 550 and 560 hold the protruding projections 630 and 740 by magnetic pulling force, respectively.
  • the denture base 520 is brought into contact with the upper gingiva 800 by interposing saliva, so that the denture 50 for intermediate missing tooth can be firmly attached to the abutment tooth 90.
  • both ends of the artificial tooth 50 for intermediate missing tooth are slidable in parallel with the abutment teeth 91, 92 (90) with some play as described above.
  • the denture 50 for intermediate missing teeth can be moved only in the vertical direction defined by play. This prevents a problem that occurs when the tooth is fixed to the abutment teeth 91, 92 (90) at both ends without any play like the conventional both-end supporting denture. That is, according to the present embodiment, the occlusal force received from the teeth on the opposite side during the upper and lower occlusions is not excessively applied to the dentures for supporting both ends.
  • the denture is easily damaged, and the joint portion with the damaged abutment tooth 91, 92 (90) does not damage the gingiva 800, and a part of the joint portion itself becomes a fragment and becomes a mouthpiece. It is possible to avoid the conventional problems such as getting in and causing accidental ingestion.
  • the presence of the above-described space S allows the gingival-side lower ends of the protruding projections 630 and 740 when the abutment teeth 91 and 92 (90) are brushed with a toothbrush or the like after the intermediate missing tooth denture 50 is removed. It is possible to secure a sufficient gap between the upper surface of the gingiva and the upper surface of the gingiva. This makes it possible to easily remove the food residue of the food accumulated in this gap. As a result, these food wastes do not remain clogged in this portion, and it is possible to prevent the occurrence of tooth decay and bad breath thereafter.
  • the denture front end portions 530b and 540b of the ridge sliding engagement portions 530 and 540 are closed, the ridge sliding engagement portions 530 and 540 are not blocked by food when the food is being bitten. It is possible to prevent a part from entering.
  • the denture wearer can enjoy a comfortable fit and bite feeling of the denture 50 for intermediate missing teeth in the occlusion.
  • FIG. 5B is a plan view partially showing the first modification of the present embodiment
  • FIG. 5C is a plan view partially showing the second modification
  • FIG. It is a top view which shows a 3rd modification partially.
  • the end surface view of the ridge protruding portion is changed to a substantially circular shape to have another shape, and the sectional shape of the ridge protruding groove for engaging and sliding movement of the ridge protruding portion is changed. It has been changed according to the shape of.
  • the protruding projections 632 and 742 may have a substantially rectangular shape when viewed from the end, that is, viewed from the upper surface side of the artificial tooth.
  • the cross-sectional shape of the ridge sliding groove portions 532, 542 is a substantially rectangular shape that is slightly larger than this in accordance with the ridge protruding portions 632, 742.
  • the protrusion projections 633, 743 may have a substantially triangular shape when viewed from the end, that is, when viewed from the upper surface side of the artificial tooth.
  • the cross-sectional shape of the ridge sliding groove portions 533, 543 is a substantially triangular shape which is slightly larger than the ridge protruding portions 633, 743.
  • the shape of the protruding protrusions 634, 744 is end view, that is, a so-called mushroom shape in which the connecting portion of the base end portion is combined with the semicircular shape when viewed from the upper surface side of the artificial tooth. It may have a (generally semi-circular shape of irregular shape).
  • the cross-sectional shape of the ridge sliding groove portions 534 and 544 is a slightly larger mushroom shape (an irregular semicircular shape) which is slightly larger than the ridge protruding portions 634 and 744.
  • the corner edges at the upper ends of the protrusions are chamfered so that the denture 50 for intermediate missing teeth can be easily fitted into the abutment teeth 91, 92 (90) at both ends.
  • the lower end of each ridge sliding groove portion and the opening into which each ridge protrusion enters are chamfered as a whole or have a tapered shape.
  • FIG. 6 is a side view showing a fourth modified example of this embodiment.
  • a fourth modified example which is a further modified example, instead of the protruding projection, the length in the groove portion direction which is adapted to engage with the sliding in the vicinity of the substantially central portion of the protruding slide sliding groove portions 535, 545 is provided.
  • the metal crowns 610 and 710 are provided with projections 635 and 745 which are short and substantially circular in plan view and have a sufficient plate thickness. Even with such a structure, the effects of the denture according to the present invention for attaching the denture for intermediate missing tooth 50 and its attachment can be sufficiently exerted.
  • the shape of the protrusion is not limited to this, and may be, for example, a plan view elliptical shape. Alternatively, it may have a substantially rectangular shape, a substantially triangular shape, or the irregular semicircular shape (mushroom shape) described above. In this case, the cross-sectional shape of the convex slide groove into which the protrusion is slidably fitted may be appropriately changed according to the shape of these protrusions in plan view.
  • the corner edges at the upper ends of the protrusions are chamfered over the entire circumference so that the artificial tooth 50 for intermediate missing teeth can be easily fitted into the abutment teeth 91, 92 (90) at both ends.
  • the lower end of the convex slide groove portions 535, 545 and the opening portion into which the projection portion enters are chamfered or tapered.
  • the groove width of the groove does not have to be the same along the groove extending direction as long as the protrusion can be engaged, and even if it has an elongated elliptical shape in the vertical direction. good.
  • the opening of the denture front end is closed by the ridge sliding engagement portion, but it goes without saying that it may be directly closed by a part of the denture main body instead. ..
  • the definitions of the substantially spherical body and the substantially circular shape in the present embodiment and the respective modified examples include so-called egg-shaped and elliptical shapes.
  • the implant By attaching the metal crown according to the present invention to the above, sufficient effects can be obtained.
  • 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.
  • Denture and its attachment attachment 510 (511, 512, 513,...) Denture main body, 520 Denture base, 530, 540 Convex sliding engagement part, 530a, 540a Denture base side end part, 530b, 540b Denture Tip side end portion, 531, 541 convex strip sliding groove portion, 532, 542 convex strip sliding groove portion, 533, 543 convex strip sliding groove portion, 534, 544 convex strip sliding groove portion, 535, 545 convex strip sliding groove portion, 550,560 magnets, 570,580 magnet holders, 610,710 metal crowns, 630,740 convex projections, 632,742 convex projections, 633,743 convex projections, 634,744 convex projections, 635 , 745 protrusion, 800, 802 gingiva, S3, S4 space, D saliva

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

Abstract

La présente invention concerne une couronne métallique (610, 710) pour recouvrir une dent de butée, et une partie saillante arête (630, 740) formée à partir d'un matériau magnétique qui s'étend dans la surface périphérique de la couronne métallique (610, 710), et est pourvue d'une partie de mise en prise coulissante d'arête (530, 540) et d'un aimant (550, 560). Par la coopération de la partie saillante arête (630, 740) et de la partie mise en prise coulissante d'arête (530, 540), une prothèse dentaire manquante intermédiaire est montée sur une dent de butée (91, 92). La partie saillante arête (630, 740) peut coulisser dans la partie mise en prise coulissante d'arête (530, 540) de la prothèse dentaire manquante intermédiaire. Au moment de l'occlusion dentaire, en étant comprimée sur une gencive (800), la prothèse dentaire manquante intermédiaire reçoit une force occlusale opposée appliquée à la prothèse dentaire manquante intermédiaire et la dent de butée (91, 92) à chaque extrémité de la prothèse dentaire manquante. Dans un état où une base de prothèse dentaire (520) s'enfonce par rapport à la gencive (800), chacune des parties de projection d'arête (630, 740) ne vient pas en butée contre une partie d'extrémité sur le côté corps de la prothèse dentaire de la partie mise en prise coulissante d'arête (530, 540), et la partie saillante et la partie d'extrémité sont espacées l'une de l'autre selon un certain espace entre elles.
PCT/JP2019/050717 2018-12-25 2019-12-24 Prothèse dentaire et fixation pour la monter WO2020138123A1 (fr)

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JPH0951902A (ja) * 1995-08-11 1997-02-25 Aichi Steel Works Ltd スライド式義歯
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