JP2022133659A - Artificial tooth bed frame and artificial tooth bed - Google Patents

Abstract

To provide guided surgery without requiring other surgical guide different from an artificial tooth bed.SOLUTION: There is provided an artificial tooth bed frame 10 forming an artificial tooth bed, which comprises: a metal plate-shaped part 11 which is formed into a shape along an oral cavity of a patient; and a housing 12 which is integrated with the plate-shaped part 11 at a position corresponding to a part where an implant cavity of an oral cavity of the patient is formed, has an opening toward the implant cavity side, and holds an attachment which attaches the artificial tooth bed to the oral cavity of the patient. The housing 12 has an open hole 12a serving as a guide for forming the implant cavity.SELECTED DRAWING: Figure 3

Description

The present invention relates to a denture base frame and a denture base used in dental treatment.

Conventionally, partial dentures and overdentures (IODs: Implant Over Dentures) using implant support are known (see, for example, Patent Document 1). These are called implant dentures.

JP 2014-30499 A

Guided surgery is usually performed when performing treatment with implant dentures. Guided surgery is an implant that uses a resin mouthpiece called a surgical guide to design the implant placement position on a computer based on X-rays and CT (Computed Tomography) images obtained by imaging. Surgery. When performing treatment with implant dentures in this way, a surgical guide is required in addition to the dentures.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a denture base frame and a denture base that enable guided surgery without requiring a surgical guide separate from the denture base.

In order to achieve the above object, a denture base frame according to the present invention is a denture base frame that constitutes a denture base, comprising a metal plate-shaped part shaped to fit the patient's oral cavity and an implant cavity in the patient's oral cavity. a housing formed integrally with the plate-like portion at a location corresponding to the portion where the is formed, having an opening toward the implant cavity side and holding an attachment for mounting the denture base in the oral cavity of the patient; , and the housing has a through hole to guide the formation of the implant cavity.

The through hole of the housing formed in the denture base frame according to the present invention can be used as a guide when forming the implant cavity. Therefore, according to the denture base frame according to the present invention, guided surgery is possible without requiring a surgical guide separate from the denture base.

The plate-shaped part may be formed so as to be in contact with the patient's oral cavity at least at locations other than the housing, and to be attached to the patient's oral cavity at the location of the housing without contacting the patient's oral cavity. According to this configuration, it is possible to create a more appropriate denture base by, for example, covering the portion of the denture base frame corresponding to the portion where the implant cavity is to be formed with resin.

Moreover, the denture base according to the present invention is configured including the denture base frame according to the present invention.

The present invention allows guided surgery without the need for a surgical guide separate from the denture base.

1 is a perspective view of a denture base frame according to an embodiment of the present invention; FIG. 1 is a perspective view of a denture base according to an embodiment of the present invention; FIG. 1 is a cross-sectional view of a denture base frame according to an embodiment of the present invention; FIG. 1 is a cross-sectional view of a denture base according to an embodiment of the present invention; FIG. It is a figure for demonstrating the usage method of the denture base frame which concerns on embodiment of this invention.

Hereinafter, embodiments of a denture base frame and a denture base according to the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and overlapping descriptions are omitted. Also, the dimensional ratios in the drawings do not necessarily match those in the description.

The denture base frame 10 and the denture base 1 according to this embodiment are used in implant treatment, which is dental treatment, more specifically in implant treatment by top-down treatment. The denture base 1 according to this embodiment is used by being attached to an implant that is implanted (embedded) in a portion corresponding to a missing tooth in the patient's jawbone and gingiva. The denture base 1 is an overdenture or a partial denture. The denture base frame 10 according to this embodiment is a metal frame for the denture base 1 according to this embodiment.

FIG. 1 is a perspective view of a denture base frame 10 according to this embodiment. FIG. 2 is a perspective view of the denture base 1 according to this embodiment. FIGS. 1 and 2 show the denture base frame 10 and the denture base 1 mounted in the oral cavity 100 of the patient. FIG. 3 is a cross-sectional view of the denture base frame 10 according to this embodiment. FIG. 4 is a cross-sectional view of the denture base 1 according to this embodiment. 3 and 4 show the denture base frame 10 and the denture base 1 of the portion to be attached to the alveolar ridge 110 of the patient.

The denture base frame 10 includes a plate-like portion 11 and a housing 12 . The plate-like portion 11 is a thin plate-like member made of metal that has a shape that conforms to the patient's oral cavity 100 and that can be attached to the patient's oral cavity 100 . The plate-like portion 11 serves as a base for the teeth 20 and gums 21 of the denture base 1 formed of resin (resin) shown in FIG.

The plate-like part 11 is formed so as to cover at least the part of the patient's oral cavity 100 where the teeth 20 of the denture base 1 are to be provided with artificial teeth. The portion 11a of the plate-like portion 11 may be mesh-like or have holes so that the resin that forms the teeth 20 and gums 21 of the denture base 1 is well entwined. In addition, the plate-shaped part 11 is attached to the palate (when the denture base 1 is attached to the upper jaw) or the oral cavity floor (when the denture base 1 is attached to the lower jaw) so that the denture base 1 can be attached to the oral cavity 100 appropriately. It may have a portion 11b along the edge (if it is one). In addition, if the patient's own teeth remain, the plate-like part 11 may have a portion 11c that is attached to the patient's own teeth so that the denture base 1 can be appropriately attached to the oral cavity 100. good.

The housing 12 is a member that holds an attachment (fastener) for mounting the denture base 1 in the oral cavity 100 of the patient. The housing 12 is formed integrally with the plate-like portion 11 at a portion corresponding to the portion of the patient's oral cavity 100 where the implant cavity is formed, and has an opening toward the implant cavity side. The housing 12 has a through hole 12a that serves as a guide during formation of the implant cavity.

The attachment is for mounting the denture base 1 in the oral cavity 100 of the patient. Attachments are also provided on the abutment (implant) side in the patient's oral cavity 100 . The denture base 1 is mounted in the oral cavity 100 of the patient by connecting the attachment on the denture base 1 side and the attachment on the abutment side. The attachment is, for example, a locator attachment or a ball attachment that performs connection by fitting together, or a magnet attachment (magnet keeper) that performs connection by magnetic force. However, attachments other than those described above may be used.

For example, the housing 12 is a box-shaped or tubular member having an opening on one side, in which the attachment can be accommodated (fitted). The attachment held by the housing 12, that is, fixed to the denture base 1 is, for example, a columnar member, and is connected to the abutment-side attachment at one end face. If the attachment is cylindrical, as shown in FIGS. 1 and 3, the shape of the housing 12 is cylindrical, and the shape of the cavity inside the housing 12 is cylindrical. The shape of the inside (hollow portion, recess) of the housing 12 is adapted to the shape of the attachment 30 so that the attachment can be fitted. For example, the inner diametric length of the housing 12 may be similar to the diametric length of the attachment to hold the attachment. The attachment is fitted into the housing 12 so that the side of the attachment on the abutment side faces outward. It should be noted that the attachment is fitted into the housing 12 after the housing 12 is used as a guide as will be described later.

The inside of the housing 12 may have a depth that allows the attachment to be fitted in its entirety in the axial direction. Alternatively, the inside of the housing 12 may have a depth that allows only a portion of the attachment to be fitted in the axial direction as long as the attachment can be held securely. In addition, the housing 12 is not necessarily limited to the above shape, and may have a shape and configuration other than the above that can securely hold the attachment.

The housing 12 is integrally formed with the plate-like portion 11 so that the center axis of the implant cavity passes through the inside thereof and protrudes on the side opposite to the implant cavity. As shown in FIGS. 1 and 3, the housing 12 is normally formed in a portion 11a that covers a portion of the plate-like portion 11 on which artificial teeth are provided. In the example shown in the drawings, only one housing 12 is provided in the denture base frame 10, but the number of implant cavities formed in the patient, that is, the same number of implants as the number of implants implanted in the patient, is provided. A housing 12 is provided.

The position of the implant cavity formed in the patient, that is, the implant implantation position is determined based on the patient's X-ray or CT image. The position of the housing 12 is determined as described above depending on the determined implant cavity position. As shown in FIGS. 1 and 3, the bottom surface of the housing 12 is provided with a through hole 12a that serves as a guide during formation of the implant cavity. The through hole 12a is formed such that the central axis of the through hole 12a coincides with the central axis of the implant cavity formed in the patient. A drill used for forming an implant cavity is inserted into the through hole 12a. The size of the diameter of the through-hole 12a should match the diameter of the drill, and the drill should not move in any direction other than the axial direction when the drill is inserted. The thickness of the bottom surface of the housing 12 in which the through hole 12a is formed is such that the drill can be properly guided.

Further, when the implant treatment is performed by the two-step method, the through hole 12a of the housing 12 is formed by inserting the fixture into the implant socket with a drilling tool such as a coupling bar after the fixture is implanted in the implant cavity. It may be used as a guide for a drilling instrument when drilling a hole in the gingiva at the implant site. The through hole 12a provided in the housing 12 in this manner serves as a surgical guide.

The plate-like portion 11 is formed so as to be in contact with the oral cavity 100 of the patient at least at locations other than the housing 12 and to be attached to the patient's oral cavity 100 at the location of the housing 12 without contacting the oral cavity 100 of the patient. good too. Specifically, as shown in FIG. 3, when the denture base frame 10 is attached to the patient, there is a slight gap between the patient and the housing 12 and the portion of the plate-like portion 11 in the vicinity of the housing. may be formed to allow Other portions of the plate-like portion 11 may be formed so as to be in close contact with the oral cavity 100 of the patient. The gap is formed around at least the raised portion of the alveolar ridge 110 of the patient. As shown in FIG. 4, this portion is coated with resin to form the gingiva 21 of the denture base. This is because, in order to attach the denture base 1 to the patient's alveolar ridge 110 in close contact, it is desirable that this portion is made of resin instead of metal. The portion that does not form a gap and is in close contact with the oral cavity 100 of the patient is, for example, the portion 11b along the palate or the floor of the oral cavity and the portion 11c that is attached to the patient's own teeth.

The denture base frame 10 is made of cobalt chromium, titanium or a titanium alloy, for example. Alternatively, the denture base frame 10 may be made of metals other than those mentioned above that can be used for denture base frames. The denture base frame 10 is designed, for example, by CAD (Computer Aided Design) and produced by CAM (Computer Aided Manufacturing) for each patient. Specifically, the denture base frame 10 is produced by a milling machine or a 3D printer.

The denture base 1 includes a denture base frame 10 . To create the denture base 1, an attachment 30 is attached to the housing 12 of the denture base frame 10, as shown in FIG. The denture base frame 10 to which the attachment 30 is attached is coated with a resin that forms the teeth 20 and the gums 21 to form the denture base 1. - 特許庁The resin that forms the gingiva 21 is applied to the base of the tooth 20 and the portion that contacts the alveolar ridge 110 of the patient. The attachment of the attachment 30 and the adhesion of the resin are performed after the denture base frame 10 is guided as described above.

The design and fabrication of the resin portion of the denture base 1 may be performed by CAD and CAM, similar to the design and fabrication of the denture base frame 10 . Specifically, the design and fabrication of the resin portion of the denture base 1 may be performed in the same manner as in the past. The resin used for the denture base 1 may be the same as the conventional one.

The tooth 20 portion of the denture base 1 may be the upper portion of the housing 12 as shown in FIG. Also, by inserting resin from the outside of the through-hole 12a, the attachment 30 can be pushed toward the opening of the housing 12 and moved. This may be used to adjust the axial position of the attachment 30 . The above is the denture base frame 10 and the denture base 1 according to this embodiment.

Subsequently, implant treatment using the denture base frame 10 according to this embodiment will be described with reference to FIG. An example of two-stage implant treatment will be shown below, but the denture base frame 10 according to the present embodiment can also be used for implant treatment other than the two-stage method.

First, the position of the implant cavity formed in the patient, that is, the implant implantation position is determined based on the patient's X-rays and CT images. Subsequently, the denture base frame 10 and the denture base 1 are designed based on the positions of the implant cavities. This design is performed by CAD, for example. Subsequently, the designed denture base frame 10 is created. This creation is performed, for example, by CAM. The prepared denture base frame 10 is attached to the oral cavity 100 of the patient. Subsequently, as shown in FIG. 5( a ), a drill 300 for forming an implant cavity is inserted into the through hole 12 a of the housing 12 provided on the denture base frame 10 . Using the through hole 12a as a guide, an implant cavity is formed in the patient's gingiva and jawbone with a drill 300. As shown in FIG. As shown in FIG. 5(b), the fixture 200 is implanted in the formed implant cavity. Subsequently, as shown in FIG. 5(c), the gingiva is closed and the fixture 200 is awaited for osseointegration.

After osseointegration of the fixture 200, a hole is drilled in the gingiva where the fixture 200 was implanted. The perforation of the gingiva is performed, for example, by a perforator 400 such as a coupling bar as shown in FIG. 5(d). At this time, as shown in FIG. 5(d), the denture base frame 10 may be reattached to the patient's oral cavity 100, and the through hole 12a of the housing 12 may serve as a guide for drilling with the instrument 400. FIG. If the diameter of the tip of the instrument 400 is larger than the diameter of the through hole 12a, the instrument 400 with the handle removed is passed through the housing 12 from the inside as shown in FIG. 5(d). , the denture base frame 10 may be attached to the oral cavity 100 of the patient in that state. Alternatively, the denture base frame 10 may be reattached to the patient's oral cavity 100 with the instrument 400 passed through the through hole 12a, and the portion to be drilled by the instrument 400 may be marked. In this case, the denture base frame 10 is removed from the oral cavity 100 of the patient. Drilling may then be performed with the instrument 400 removed from the denture base frame 10 . Subsequently, an abutment 210 provided with an abutment-side attachment is attached to the fixture 200 below the hole. As a result, the abutment side is brought into a state as shown in FIG.

On the other hand, an attachment 30 is attached to the denture base frame 10 . Based on the design described above, the denture base frame 10 is coated with resin on portions corresponding to the teeth 20 and gingiva 21, and the denture base 1 shown in FIGS. 2 and 4 is produced. The denture base 1 is used by being mounted in the oral cavity 100 of the patient by connecting the attachment 30 to the attachment on the side of the abutment. The above is the implant treatment using the denture base frame 10 according to the present embodiment.

The through hole 12a of the housing 12 formed in the denture base frame 10 according to this embodiment can be used as a guide when forming an implant cavity. Therefore, according to this embodiment, guided surgery is possible without requiring a surgical guide separate from the denture base 1 . Therefore, guided surgery can be performed without the cost of preparing a separate surgical guide, and implant treatment can be performed easily and reliably.

Further, as in the above-described embodiment, the plate-like portion 11 of the denture base frame 10 contacts the oral cavity 100 of the patient at least at locations other than the housing 12, and does not contact the oral cavity 100 at the location of the housing 12. It may be formed so that it can be attached to the oral cavity 100 of the patient. According to this configuration, a more appropriate denture base 1 can be created by covering the portion of the denture base frame 10 corresponding to the portion where the implant cavity is to be formed with resin.

Further, the denture base 1 according to this embodiment may be configured including the denture base frame 10 according to this embodiment. As mentioned above, the tooth 20 portion of the denture base 1 may be the upper portion of the housing 12 as shown in FIG. That is, the position of the housing 12, that is, the position of the implant cavity may be set to a position corresponding to the tooth 20 portion of the denture base 1. With this configuration, the biting force is supported not only by the implant but also by the metal housing 12 . As a result, damage such as wear and chipping of the denture base 1 can be reduced. That is, a strong denture base 1 can be created. As a result, implant treatment can be performed with less physical and economic burden on the patient without increasing the number of implants.

DESCRIPTION OF SYMBOLS 1... Denture base, 10... Denture base frame, 11... Plate-shaped part, 12... Housing, 12a... Through hole, 30... Attachment.

Claims (3)

A denture base frame constituting a denture base,
A metal plate-shaped part having a shape that conforms to the oral cavity of the patient;
The denture base is mounted in the oral cavity of the patient, and has an opening toward the implant cavity, which is integrally formed with the plate-shaped portion at a portion corresponding to the portion of the oral cavity of the patient where the implant cavity is formed. a housing that holds an attachment for
The housing is a denture base frame having a through hole that serves as a guide during formation of the implant cavity. 2. The plate-like portion is formed so as to be in contact with the oral cavity of the patient at least at locations other than the housing, and to be attached to the patient's oral cavity at the location of the housing without contacting the patient's oral cavity. The denture base frame described in . A denture base comprising the denture base frame according to claim 1 or 2.

Images