WO2024019347A2 - Dental prosthesis - Google Patents

Abstract

The present invention provides a structure in which an elastic member is inserted between a dental prosthesis and the gum in order to compensate for alveolar bone loss resulting from the passage of a long period of time. An improved structure can be applied to both a dental prosthesis and dentures.

Description

dental prosthesis

The present invention relates to dental prosthesis. More specifically, the present invention relates to a dental prosthesis that can effectively compensate for the loss of gum bone of extracted teeth.

In general, humans have a total of 32 teeth, including 16 teeth in the upper jaw and 16 teeth in the lower jaw. The deciduous teeth created in infancy are replaced with permanent teeth as the child grows, and people use the permanent teeth for oral activities throughout their lives. Perform. If one or more teeth are damaged due to oral diseases such as tooth decay after the creation of permanent teeth, a dental prosthesis to replace the missing teeth is worn to supplement smooth masticatory function.

Missing tooth replacement dental prosthesis is a device that restores function by replacing missing teeth with artificial teeth (dentures) for large parenchymal defects of teeth, or decline in oral function or abnormal shape due to tooth loss. Dentures, partial dentures, removable dentures You can use dental protectors.

As an example of such a missing tooth replacement dental prosthesis, Republic of Korea Patent Publication No. 10-2015-0029117 (published on March 18, 2015) includes a coupling portion in which a groove is formed into which the gum is inserted, and at least one arranged along the upper side of the coupling portion. Disclosed is a removable denture including a denture body having a denture and an elastic member embedded along the bottom of the coupling portion so that the coupling portion elastically couples to the gum.

In Patent No. 10-1890884 (registered on August 16, 2018), the applicant, as shown in FIG. 6, has a screw-like insert in the through hole 21' formed from the upper surface to the center of the denture 20'. It discloses that the height of the dental prosthesis 1' is adjusted to correspond to the state of the user's gums by inserting the fastening tool 13'.

However, when teeth are treated or corrected using dental prostheses or dentures, the gum bone at the extraction site is absorbed and disappears by approximately 1 mm per year. Five years after tooth extraction, prosthetics or dentures become loose, causing problems such as dislodgement or misalignment. In this case, the lower surface of the denture at the tooth extraction area is filled or the prosthesis or denture is replaced with a new one.

The purpose of the present invention is to provide a dental prosthesis and dentures that can make up for the loss of gum bone in the natural gums remaining in spaces where teeth are missing.

In order to achieve the above-mentioned object, the present invention provides a dental prosthesis that is placed on the gums, and the dental prosthesis includes: a central denture that is mounted on the gums to cover the space where the teeth are missing; and at least one peripheral denture covering the teeth surrounding the missing tooth; Includes, the central denture includes a fastening hole formed to a predetermined height near the center of the surface where the central denture is in contact with the gums, and a bolt inserted and coupled to the fastening hole, and the dental prosthesis is between the lower surface of the bolt and the gums. A dental prosthesis is provided that further includes an elastic member having a predetermined height to tightly fill the gap between the central denture and the gums caused by loss of the gum bone.

A screw thread is formed in the fastening hole, and a screw thread of a shape complementary to the screw thread may be formed in the bolt.

In addition, the present invention is a denture including an artificial denture and an artificial gum supporting the artificial denture, wherein the denture is attached to the artificial gum covering the space of the missing tooth at a predetermined height near the center of the surface in contact with the gum of the missing tooth. It includes a fastening hole formed up to and a bolt inserted and coupled to the fastening hole, and further includes an elastic member having a predetermined height between the lower surface of the bolt and the gum to reduce the gap between the artificial gum and the gum caused by loss of gum bone. Dentures are provided to fill any gaps.

The artificial denture of the above denture is made of two artificial denture rows separated from each other, and artificial gums made of soft material are formed to support each denture row, so that the denture may be a partial denture.

Alternatively, the denture may be a full denture.

In a dental prosthesis or denture, the lower end of the bolt may penetrate the elastic member and point toward or contact the gum.

According to the present invention, even if there is loss of the gum bone, the procedure can be performed quickly and easily using an elastic member without the need to replace or repair a dental prosthesis or denture. Even when multiple procedures are required over a long period of time, the elastic member can be used. Since it is sufficient to exchange, it is economical and simple.

1 is a diagram showing an example of a dental prosthesis according to an embodiment of the present invention;

Figure 2 is a view showing the dental prosthesis of Figure 1 being mounted on the gum via an elastic pad;

Figure 3 is a diagram showing an example of a dental prosthesis according to another embodiment of the present invention;

Figure 4 is a diagram showing an example of a partial denture according to an embodiment of the present invention;

Figure 5 is a diagram showing an example of a full denture according to an embodiment of the present invention; and

Figure 6 is a diagram showing an example of a dental prosthesis of the prior art.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

<Tooth prosthesis>

In the present invention, “dental prosthesis” refers to an artificial prosthesis including dentures manufactured for tooth extraction, defects or treatment, etc., that can be combined with and separated from natural teeth or gums. Therefore, prosthetics used for implants or bridges that are permanently or semi-permanently bonded to teeth or gums are excluded.

In the present invention, body parts such as “teeth” or “gum” shall refer to natural teeth or natural gums if there is no modifier such as “artificial” or “synthetic.”

Figure 1 shows an example of a dental prosthesis 1 according to an embodiment of the present invention. The dental prosthesis (1) is placed on the gum (A). The dental prosthesis 1 is manufactured to have a natural shape according to the shape of the tooth. The appearance of the dental prosthesis 1 consists of, for example, a frame 100 having the appearance of three teeth arranged in succession. The inside of the frame 100 is largely divided into three spaces with elastic connectors 17 made of an elastic material so that they can be adjusted according to the user's dental structure.

Assuming that the central tooth is not extracted or missing among the row of teeth consisting of three teeth, the teeth on the left and right serve as supports to support the central artificial tooth.

Therefore, the denture 10 in the center of the dental prosthesis 1 is an artificial tooth that covers the space caused by a missing tooth, and the denture 30 on the left and the denture 32 on the right are the teeth existing on the left and right of the missing tooth. It is manufactured to cover. These teeth are pre-cut so that they can be naturally inserted into the left and right dentures 30 and 32 and can function like an abutment of a bridge. A metal surface 100a, such as stainless steel or titanium alloy, may be formed integrally with the upper surface of the frame 100 covering the central denture 10.

According to the present invention, a threaded fastening hole 12 is formed from near the center of the lower surface of the central denture 10, where the central denture 10 is in contact with the gums, to a predetermined height. Then, a long bolt 50 in the shape of a circular column with a thread complementary to the fastening hole 12 is screwed into the fastening hole 12. Since the height at which the central denture 10 is located varies depending on the height at which the fastening hole 12 and the bolt 50 are finally combined, the fastening hole 12 or the bolt 50 is installed in consideration of the shape of the user's gums and the state of teeth. After determining the size or specifications, the size and height of the left and right dentures 30 and 32 can also be determined. For example, if the gums of the patient's missing central tooth are convex, a short screw is used.

The present invention is characterized in that the gap between the central denture (10) and the gum (A) is tightly filled by interposing an elastic member (20) with a predetermined height between the lower surface of the bolt (50) and the gum (A). . The elastic member 20 is made of a material that can bend and bend to a certain degree, such as silicone, rubber, or fiber, which is not at all harmful to the human body.

The elastic member 20 may not be used when the dental prosthesis 1 is implanted in a patient for the first time. However, it is effectively used when it is necessary to replace a dental prosthesis as the gum bone at the extraction site is absorbed and lost by approximately 1 mm per year.

In this case, the dental prosthesis (1) is separated from the patient's teeth, and then the elastic member (20) is placed on the gum (A) area of the extracted tooth. The size and height of the elastic member 20 may be determined based on a photograph of the patient's teeth. Next, the dental prosthesis 1 is joined to the tooth row as shown in FIG. 2. The head portion 52, which is the lower surface of the bolt 50, serves to pressurize the elastic member 20 and secure it to the gums.

In this way, even if there is loss of the gum bone, the dental prosthesis 1 can be quickly and easily performed using the elastic member without the need to replace or repair it. In addition, even when multiple treatments are required over a long period of time, it is sufficient to replace the elastic member 20, making it inexpensive and convenient.

The elastic member 20 may be brought into close contact with the lower surface of the central denture 10 so as to contact the head portion 52 of the bolt 50 without previously being mounted on the gum A, and then the dental prosthesis 1 may be combined. .

Although the fastening hole 12 and the bolt 50 are described as having threads as an example, it is also possible to manufacture them without threads as shown in FIG. 3 and join the two members by forcibly press-fitting them.

<Partial dentures>

“Dentures” correspond to dental prosthesis in a broad sense, but are different in that artificial gums are formed to support the dentures, and in this respect, they will be explained in a separate example.

Figure 4 is a perspective view of a partial denture 200 using an elastic member 20 to compensate for the loss of gum bone according to the present invention. The partial denture 200 includes, for example, four denture rows 202 on the left, three denture rows 204 on the right, and a metal connector 206 connecting the two denture rows 202 and 204. It consists of

An artificial gum (B) made of a soft material is formed at the lower part of each denture row (202, 204), and the lower surface of the artificial gum (B) is in contact with the gum (A). A fastening hole 212 with threads is formed to a predetermined height near the center of the lower surface where the artificial gums (B) contact the gums (A), and a long circular column shape with threads complementary to the fastening holes 212 is formed. The bolt 250 is screwed into the fastening hole 212.

Similar to the previous embodiment, the present invention provides an elastic member (20) with a predetermined height between the lower surface of the bolt (250) and the gum (A) to close the gap between the artificial gum (B) and the gum (A). It is characterized by filling without.

The elastic member 20 may not be used when the patient wears the partial denture 200 for the first time. However, it is effectively used when it is necessary to replace a dental prosthesis as the gum bone in the area where the tooth is extracted is absorbed and lost by approximately 1 mm per year.

In this case, the partial denture 200 is separated from the patient's teeth, and then the elastic member 20 is placed on the area of the gums (A) that are in contact with the artificial gums (B). Next, the partial denture 200 is combined according to the tooth row. The head portion, which is the lower surface of the bolt 250, serves to pressurize the elastic member 20 and secure it to the gums.

A plurality of fastening holes 212 may be formed in the artificial gum B to couple the artificial gum B with a plurality of bolts 250, and the plurality of bolts 250 may press the elastic member 20.

In addition, when the missing portion of the gum bone is multiple, a combination of fastening hole-bolt-elastic member may be used for each corresponding artificial gum (B). The elastic member 20 does not need to cover all parts of the gums (A), and if necessary, its size may be determined to cover only the parts where gum bones are missing.

<Full dentures>

Figure 5 is a perspective view of a full denture 300 using an elastic member 20 to compensate for the loss of gum bone according to the present invention. The full denture 300 consists of an artificial denture that replaces all teeth, and an artificial gum (B) of a continuous shape made of soft material that supports the artificial denture.

A fastening hole 212 with threads is formed from near the center of the lower surface of the artificial gums (B) in contact with the gums (A), not shown, to a predetermined height, and a circular column with threads of a shape complementary to the fastening holes 212 is formed. A long bolt 250 is screwed into the fastening hole 212.

Similar to the previous embodiment, the present invention provides an elastic member (20) with a predetermined height between the lower surface of the bolt (250) and the gum (A) to close the gap between the artificial gum (B) and the gum (A). It is characterized by filling without.

In Figure 5, bolts 250 are combined with the artificial gums (B) supporting the left and right and upper and lower four molar denture rows where gum bone loss occurs most often, and an elastic member to be seated on the corresponding gum area (not shown). 20) is shown. Of course, even in the full denture 300, the number and installation location of the bolts 250 can be appropriately changed depending on the condition of the patient's gums.

Although the preferred embodiment of the present invention has been described above, various changes and modifications can be made to the present invention. For example, it was explained that the bottom of the bolt supports the elastic member, but the bottom of the bolt may penetrate the elastic member and point toward the gum or come into contact with the gum.

It is obvious that the scope of rights of the present invention extends to the same or equivalent area as the claims described below.

Claims (6)

1. A dental prosthesis that rests on the gums, wherein the dental prosthesis:

   A central denture that is fitted over the gums to cover spaces where teeth are missing; and

   at least one peripheral denture that covers the teeth surrounding the missing tooth; Includes,

   The central denture includes a fastening hole formed to a predetermined height near the center of the surface of the central denture in contact with the gums, and a bolt that is inserted and coupled to the fastening hole,

   The dental prosthesis further includes an elastic member having a predetermined height between the lower surface of the bolt and the gum to tightly fill the gap between the central denture and the gum caused by loss of gum bone.
2. According to clause 1,

   A dental prosthesis wherein a screw thread is formed in the fastening hole, and a screw thread of a shape complementary to the screw thread is formed in the bolt.
3. A denture comprising an artificial denture and artificial gums supporting the artificial denture,

   The denture includes an artificial gum that covers the space of the missing tooth, a fastening hole formed to a predetermined height near the center of the surface in contact with the gum of the missing tooth, and a bolt that is inserted and coupled to the fastening hole, and the lower surface of the bolt and the gum. A denture that further includes an elastic member with a predetermined height between the gums to tightly fill the gap between the artificial gums and the gums caused by loss of gum bones.
4. The denture according to claim 3, wherein the artificial denture consists of two artificial denture rows separated from each other, and artificial gums made of soft material are formed to support each denture row, so that the denture is a partial denture.
5. According to clause 1,

   The lower end of the bolt penetrates the elastic member and is directed toward or in contact with the gums.
6. According to clause 3,

   A denture where the lower end of the bolt penetrates the elastic member and faces or touches the gums.

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