Retention device for gothic arch in natural dentition and method for manufacturing the device

Abstract

The application discloses a Gothic arch retaining device for natural dentition and a manufacturing method of the device. The device comprises: a maxillary retaining splint comprising an inner side and an outer side formed around the maxillary natural dentition, the maxillary retaining splint further comprising a plurality of retaining connecting parts extended from the inner side and located in the same horizontal plane; a mandibular retaining splint comprising an inner side and an outer side formed around the mandibular natural dentition, the mandibular retaining splint further comprising a plurality of retaining connecting parts extended from the inner side and located in the same horizontal plane; a maxillary Gothic arch having a plurality of retaining pins for connecting with the plurality of retaining connecting parts of the maxillary retaining splint to determine the position of the maxillary Gothic arch; and a mandibular Gothic arch having a plurality of retaining pins for connecting with the plurality of retaining connecting parts of the mandibular retaining splint to determine the position of the mandibular Gothic arch. The Gothic arch can be installed, fixed and used on the natural dentition.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oral medical devices, in particular to a retention device for a Gothic arch on natural dentition and a manufacturing method thereof. BACKGROUND

[0002] At present, a finished Gothic arch can be used to complete the centric relation record of full denture repair for edentulous patients, and the installation of the Gothic arch on the bite plate has been streamlined.

[0003] However, the finished Gothic arch is difficult to apply to natural dentition, and the limitations of its application bring many inconveniences. Some people use self-curing resin to make a simple Gothic arch and fill the interproximal space of natural teeth with model resin to fix it, but the Gothic arch component made in this way is rough, and the retention force and stability are insufficient, so a more precise Gothic arch is needed for recording. SUMMARY

[0004] The main purpose of the present application is to provide a retention device for a Gothic arch on natural dentition and a manufacturing method thereof, to solve the technical problem that the existing Gothic arch cannot be applied to natural dentition.

[0005] According to an embodiment of the present application, a retention device for a Gothic arch on natural dentition is provided, which comprises: a maxillary retention clamping plate, the maxillary retention clamping plate comprising an inner side and an outer side formed around the maxillary natural dentition, the maxillary retention clamping plate further comprising a plurality of retention connecting parts extending from the inner side thereof and located on the same horizontal plane; a mandibular retention clamping plate, the mandibular retention clamping plate comprising an inner side and an outer side formed around the mandibular natural dentition, the mandibular retention clamping plate further comprising a plurality of retention connecting parts extending from the inner side thereof and located on the same horizontal plane; a maxillary Gothic arch having a plurality of retention pins for connecting with the plurality of retention connecting parts of the maxillary retention clamping plate to determine the position of the maxillary Gothic arch; and a mandibular Gothic arch having a plurality of retention pins for connecting with the plurality of retention connecting parts of the mandibular retention clamping plate to determine the position of the mandibular Gothic arch.

[0006] The inner side of the maxillary retention clamping plate covers the palatal side of the maxillary natural dentition, the outer side of the maxillary retention clamping plate covers the labial side of the maxillary natural dentition, and the inner side and the outer side of the maxillary retention clamping plate are connected at the distal proximal surface of the terminal tooth of the dental arch; the inner side of the mandibular retention clamping plate covers the lingual side of the mandibular natural dentition, the outer side of the mandibular retention clamping plate covers the labial side of the mandibular natural dentition, and the inner side and the outer side of the mandibular retention clamping plate are connected at the distal proximal surface of the terminal tooth of the dental arch.

[0007] The maxillary retention splint comprises three retention connections: a first retention connection extends medially at the position corresponding to the central incisor of the maxillary dentition; and a second and a third retention connection extend medially at the middle third position of the bilateral first molars of the maxillary dentition. Similarly, the mandibular retention splint comprises three retention connections: a first retention connection extends medially at the position corresponding to the central incisor of the mandibular dentition; and a second and a third retention connection extend medially at the middle third position of the bilateral first molars of the mandibular dentition.

[0008] The maxillary Gothic arch includes a tracing plate, a positioning plate, and a positioning screw; wherein the positioning screw fixes the positioning plate to the tracing plate; the mandibular Gothic arch includes a retaining plate and a tracing needle spirally connected to the retaining plate; wherein the tracing plate is parallel to the retaining plate, and the tracing needle is in contact with the tracing plate.

[0009] Each retention connection portion of the maxillary retention splint is provided with a gourd-shaped hole for connection with the retention pin of the maxillary Gothic arch; each retention connection portion of the mandibular retention splint is provided with a gourd-shaped hole for connection with the retention pin of the mandibular Gothic arch.

[0010] According to an embodiment of the present invention, a retention device for a Gothic arch in a natural dentition is also provided, comprising: a maxillary retention splint, the maxillary retention splint including an inner and outer side formed around the maxillary natural dentition, the maxillary retention splint further including a plurality of retention connectors extending from its inner side and located on the same horizontal plane; and a mandibular retention splint, the mandibular retention splint including an inner and outer side formed around the mandibular natural dentition, the mandibular retention splint further including a plurality of retention connectors extending from its inner side and located on the same horizontal plane; wherein the position of the maxillary Gothic arch connected to its plurality of retention connectors is determined according to the position of the maxillary retention splint, and the position of the mandibular Gothic arch connected to its plurality of retention connectors is determined according to the position of the mandibular retention splint.

[0011] The maxillary retention splint has its inner side covering the palatal side of the maxillary natural dentition and its outer side covering the labial / buccal side of the maxillary natural dentition. The inner and outer sides of the maxillary retention splint are connected at the distal proximal surfaces of the distal teeth of the dental arch. The mandibular retention splint has its inner side covering the lingual side of the mandibular natural dentition and its outer side covering the labial / buccal side of the mandibular natural dentition. The inner and outer sides of the mandibular retention splint are connected at the distal proximal surfaces of the distal teeth of the dental arch.

[0012] The maxillary Gothic arch includes a tracing plate, a positioning plate, and a positioning screw; wherein the positioning screw fixes the positioning plate to the tracing plate; the mandibular Gothic arch includes a retaining plate and a tracing needle spirally connected to the retaining plate; wherein the tracing plate is parallel to the retaining plate, and the tracing needle is in contact with the tracing plate.

[0013] According to an embodiment of the present invention, a method for fabricating a Gothic arch tracing device for natural dentition is also provided, comprising: acquiring a digital model of the maxillary dentition and a digital model of the mandibular dentition of a patient; generating a digital model of a maxillary retention splint based on the maxillary dentition digital model, the maxillary retention splint including an inner and outer side formed around the maxillary natural dentition, the maxillary retention splint further including a plurality of retention connections extending from its inner side and located on the same horizontal plane; generating a digital model of a mandibular retention splint based on the mandibular dentition digital model, the mandibular retention splint including an inner and outer side formed around the mandibular natural dentition, the mandibular retention splint... The plate also includes multiple retention connections extending from its inner side and located on the same horizontal plane; a digital model of the maxillary Gothic arch is generated based on the digital model of the maxillary retention splint, wherein the maxillary Gothic arch is connected to the multiple retention connections of the maxillary retention splint; a digital model of the mandibular Gothic arch is generated based on the digital model of the mandibular retention splint, wherein the mandibular Gothic arch is connected to the multiple retention connections of the mandibular retention splint; 3D printing is performed based on the digital models of the maxillary retention splint, the mandibular retention splint, the maxillary Gothic arch, and the mandibular Gothic arch.

[0014] The maxillary Gothic arch includes a tracing plate, a positioning plate, and a positioning screw; wherein the positioning screw fixes the positioning plate to the tracing plate; the mandibular Gothic arch includes a retaining plate and a tracing needle spirally connected to the retaining plate; wherein the tracing plate is parallel to the retaining plate, and the tracing needle is in contact with the tracing plate.

[0015] According to the technical solution of the present invention, by generating a matching personalized retention splint and Gothic arch based on the patient's natural dentition morphology, a Gothic arch can be installed or fixed on the natural dentition, providing a new way to accurately record the jaw position relationship for restorative treatments such as occlusal reconstruction of the natural dentition. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the maxillary retention splint / mandibular retention splint on the occlusal surface according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the fixation splint and jaw Gothic arch in the coronal plane according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the maxillary Gothic arch according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the maxillary Gothic arch according to an embodiment of the present invention;

[0021] Figure 5 This is a flowchart of a manufacturing method according to an embodiment of the present invention. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0023] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] In view of the problem that existing Gothic bows cannot be directly installed and fixed on natural dentition, thus making it impossible to use Gothic bows on natural dentition, this application proposes a retention device for Gothic bows, which can generate a retention splint according to the shape of natural dentition and retain the Gothic bow on the retention splint.

[0025] Reference Figure 1 and Figure 2 According to an embodiment of the present invention, the retention device includes a maxillary retention splint 10 and a mandibular retention splint 20. The maxillary / mandibular retention splints cover the labial / buccal and lingual / palatal sides of the entire dentition. The splints are open-windowed on the occlusal surface to avoid interference with the cusps and occlusal surfaces. Therefore, the retention splint components can achieve good retention on the dental arch.

[0026] In this embodiment, the maxillary retention splint 10 includes an inner splint 12 and an outer splint 14 formed around the maxillary natural dentition 50. Specifically, the inner splint 12 covers the palatal side of the maxillary natural dentition, and the outer splint 14 covers the labial and buccal sides of the maxillary natural dentition. The lower edges of the inner / outer splints of the maxillary retention splint 10 are 1-2 mm away from the cusps of each natural tooth, ensuring complete window opening on the occlusal surface of the dentition; the upper edges of the inner / outer splints are substantially flush with the gingival margin of the natural teeth. Furthermore, the inner splint 12 and the outer splint 14 are connected as one piece on the distal proximal surface of the distal teeth of the dental arch. The thickness of the maxillary retention splint 10 is approximately 2 mm.

[0027] As shown in the figure, the maxillary retention splint 10 also includes multiple retention connectors 16 extending from the inner splint 12 towards the center and located on the same horizontal plane. The retention connectors 16 are used to connect with the maxillary Gothic arch 30, thereby fixing the position of the maxillary Gothic arch. A gourd-shaped hole is provided in the center of the retention connector 16 for retaining the Gothic arch. The retention connectors 16 can also be called retention wings or horizontal wings, and are evenly spaced on the inner splint. Figure 1 As shown, three horizontal wings are installed on the inner splints corresponding to the middle 1 / 3 positions of the maxillary central incisor and bilateral first molars, respectively. The dimensions of the horizontal wings can be 8mm*10mm and the thickness can be 2mm. Figure 1 The image shows three square-shaped retaining connections. Of course, in other embodiments, four or other numbers, or other shapes such as circles, may be provided for retaining connections. This application does not impose any restrictions on this.

[0028] Similar to the maxillary retention splint 10, the mandibular retention splint 20 also includes an inner splint 22 and an outer splint 24 formed around the mandibular natural dentition 60, as well as multiple retention connections 26. For details, please refer to the above description of the maxillary retention splint 10, which will not be repeated here.

[0029] In the embodiments of this application, after the maxillary retention splint 10 and the mandibular retention splint 20 are installed in the patient's oral cavity, the maxillary Gothic arch 30 can be retained according to the maxillary retention splint 10, and the mandibular Gothic arch 40 can be retained according to the mandibular retention splint 20.

[0030] Reference Figure 3The maxillary Gothic arch 30 mainly includes: a marking plate 31, a positioning plate 32, and a positioning screw 33. The marking plate 31 is irregularly shaped, protruding outwards in four directions. Retention pins 34 are respectively provided at the front, left, and right protruding ends of the marking plate 31, and a threaded hole 35 is provided at the rear protruding end. The retention pins 34 are adapted to the retention connection parts 16. The positioning plate 32 has a slot 36 and a positioning hole 37. The positioning screw 33 passes through the slot 36 and connects to the threaded hole 35. By engaging the multiple retention pins 34 with the multiple retention connection parts 16 of the maxillary retention splint 10, the position of the maxillary Gothic arch 30 is determined in the patient's oral cavity.

[0031] Reference Figure 4 The mandibular Gothic arch 40 mainly includes a retainer plate 41 and a tracing needle 42. The retainer plate 41 is generally T-shaped, with retention pins 43 at its front, left, and right ends, which are adapted to the retention connection parts 26. A threaded hole 44 is provided in the middle of the retainer plate 41. The tip of the tracing needle 42 can be a 3mm conical tip, and the height of each thread turn below it can be 1mm. The tracing needle 42 is installed in the threaded hole 44, and its height can be adjusted by rotating it. Multiple retention pins 43 are engaged with multiple retention connections 26 of the mandibular retention splint 20, thus determining the position of the mandibular Gothic arch 40 in the patient's oral cavity.

[0032] According to the embodiments of this application, a retention splint and a Gothic arch are fabricated through digital design and 3D printing. A maxillary Gothic arch 30 and a mandibular Gothic arch 40 are installed in the patient's oral cavity. A tracing needle 42 is installed in a threaded hole 44. The tip of the tracing needle 42 abuts against or contacts the tracing plate 31 when the patient's mouth is naturally closed, ensuring that the distance between the maxilla and mandible is equal to a predetermined vertical distance. The height of the tracing needle can be easily adjusted by rotating it. After determining the height of the tracing needle 42, tracing is performed, recording the patient's mandibular protrusion and lateral movement trajectory on the tracing plate 31. The installation position of the positioning piece 32 is adjusted through the slot 36 of the positioning piece 32, aligning the positioning hole 37 of the positioning piece 32 with the centric relationship point of the movement trajectory. The tracing needle 42 is inserted into the positioning hole 37 by the patient's biting, and occlusal recording silicone rubber is injected into the interdental space to obtain an accurate centric jaw relationship.

[0033] Figure 5 This is a flowchart of a manufacturing method according to an embodiment of this application. The method is used to manufacture a retention device or marking device for a Gothic arch in a natural dentition, wherein the retention device may include a maxillary retention splint and a mandibular retention splint, and the marking device may include a maxillary retention splint, a mandibular retention splint, a maxillary Gothic arch, and a mandibular Gothic arch. Figure 5 As shown, the manufacturing method includes the following steps:

[0034] Step S502: Obtain the digital model of the patient's maxillary dentition and mandibular dentition;

[0035] Step S504: Generate a digital model of a maxillary retention splint based on the digital model of the maxillary dentition. The maxillary retention splint includes an inner and outer side formed around the maxillary natural dentition, and the maxillary retention splint also includes multiple retention connectors extending from its inner side and located on the same horizontal plane. Generate a digital model of a mandibular retention splint based on the digital model of the mandibular dentition. The mandibular retention splint includes an inner and outer side formed around the mandibular natural dentition, and the mandibular retention splint also includes multiple retention connectors extending from its inner side and located on the same horizontal plane.

[0036] Step S506: Generate a digital model of the maxillary Gothic arch based on the digital model of the maxillary retention splint, wherein the maxillary Gothic arch is connected to a plurality of retention connections of the maxillary retention splint; Generate a digital model of the mandibular Gothic arch based on the digital model of the mandibular retention splint, wherein the mandibular Gothic arch is connected to a plurality of retention connections of the mandibular retention splint.

[0037] In some embodiments of this application, the maxillary Gothic arch mainly includes: a tracing plate, a positioning plate, and a positioning screw; wherein the positioning screw fixes the positioning plate to the tracing plate; the mandibular Gothic arch mainly includes: a retaining plate and a tracing needle spirally connected to the retaining plate; wherein the tracing plate is parallel to the retaining plate, and the tracing needle is in contact with the tracing plate.

[0038] exist Figure 5 In addition to this, the following steps may also be included:

[0039] Step S508: 3D printing is performed based on the digital models of the maxillary retention splint, the mandibular retention splint, the maxillary Gothic arch, and the mandibular Gothic arch.

[0040] Step S510: Place the maxillary retention splint and mandibular retention splint into the patient's mouth respectively, and correctly install the maxillary retention splint and mandibular retention splint. Check the distance that the patient's occlusal reconstruction needs to be raised, and adjust the height of the tracing needle.

[0041] Step S512: Install the maxillary Gothic arch and mandibular Gothic arch respectively. Connect the maxillary Gothic arch to the maxillary retention splint and the mandibular Gothic arch to the mandibular retention splint. Check again whether the vertical distance of the tracing needle is appropriate. If necessary, readjust the height of the tracing needle.

[0042] Step S514: Record the patient's mandibular protrusion and lateral movement trajectory using a recording plate to identify the midline relationship point and fix the recording needle with a positioning plate.

[0043] Step S516: Inject occlusal recording silicone rubber into the gaps between the upper and lower dentitions to obtain an accurate centric occlusal relationship.

[0044] The operational steps of the method of the present invention correspond to the structural features of the device, and can be referred to each other, so they will not be described in detail hereafter.

[0045] According to the above-mentioned technical solution of this application, a suitable personalized retention splint and Gothic arch are automatically designed and matched based on the patient's dentition morphology, solving the problem that existing pre-made Gothic arches cannot be directly fixed to the natural dentition. This provides a new way to accurately record jaw position relationships for restorative treatments such as occlusal reconstruction of the natural dentition. The retention splint and Gothic arch of this application are manufactured using 3D printing technology, which is convenient to use, highly efficient, and low in cost, eliminating the potential infection risk caused by different patients sharing pre-made Gothic arches.

[0046] Although this disclosure has been described in detail with reference to specific embodiments thereof, those skilled in the art will understand that various changes and modifications may be made therein without departing from the spirit and scope of the embodiments. Therefore, this application is intended to cover modifications and variations thereof, and any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application shall be included within the scope of the claims of this application and their equivalents.

[0047] Furthermore, features disclosed in the foregoing description, claims, or drawings, expressed in their specific form or according to the manner of performing the disclosed function or the method or process for obtaining the disclosed result, may, as appropriate, be used alone or in any combination of these features to implement this application in their different forms. Specifically, one or more features of any embodiment described in this application may be combined with one or more features of any other embodiment described in this application.

[0048] Protection may also be sought for any feature disclosed in any one or more publications cited in or combined by reference in this application.

Claims

1. A retention device for a Gothic arch in a natural dentition, characterized in that, include: The maxillary retention splint includes an inner and outer side formed around the maxillary natural dentition, and the maxillary retention splint also includes a plurality of retention connections extending from its inner side and located on the same horizontal plane. A mandibular retention splint, the mandibular retention splint comprising an inner and outer side formed around the mandibular natural dentition, the mandibular retention splint further comprising a plurality of retention connections extending from its inner side and located on the same horizontal plane; A maxillary Gothic bow having multiple retention pins for connecting with multiple retention connections of a maxillary retention splint to determine the position of the maxillary Gothic bow; A mandibular Gothic bow having multiple retention pins for connecting with multiple retention connections of a mandibular retention splint to determine the position of the mandibular Gothic bow.

2. The apparatus according to claim 1, characterized in that, The inner side of the maxillary retention splint covers the palatal side of the maxillary natural dentition, and the outer side of the maxillary retention splint covers the labial and buccal side of the maxillary natural dentition. The inner and outer sides of the maxillary retention splint are connected at the distal proximal surfaces of the teeth at the end of the dental arch. The medial side of the mandibular retention splint covers the lingual side of the mandibular natural dentition, and the lateral side of the mandibular retention splint covers the labial and buccal side of the mandibular natural dentition. The medial and lateral sides of the mandibular retention splint are connected at the distal proximal surfaces of the distal teeth of the dental arch.

3. The apparatus according to claim 1 or 2, characterized in that, The maxillary retention splint includes three retention connections, wherein the first retention connection extends medially at the position of the central incisor corresponding to the maxillary natural dentition, and the second and third retention connections extend medially at the middle 1 / 3 position of the bilateral first molars corresponding to the maxillary natural dentition. The mandibular retention splint includes three retention connections, wherein the first retention connection extends medially at the position of the central incisor of the corresponding mandibular natural dentition, and the second and third retention connections extend medially at the middle 1 / 3 position of the bilateral first molars of the corresponding mandibular natural dentition.

4. The apparatus according to claim 1, characterized in that, The maxillary Gothic bow includes: a tracing plate, a positioning plate, and a positioning screw; wherein the positioning screw fixes the positioning plate to the tracing plate. The mandibular Gothic bow includes: a clasp and a tracing needle spirally connected to the clasp; The tracing plate is parallel to the card plate, and the tracing needle is in contact with the tracing plate.

5. The apparatus according to claim 1, characterized in that, Each retention connection part of the maxillary retention splint is provided with a gourd-shaped hole for connection with the retention pin of the maxillary Gothic arch; Each retention connection part of the mandibular retention splint is provided with a gourd-shaped hole for connection with the retention pin of the mandibular Gothic arch.

6. A retention device for a Gothic arch in a natural dentition, characterized in that, include: The maxillary retention splint includes an inner and outer side formed around the maxillary natural dentition, and the maxillary retention splint also includes a plurality of retention connections extending from its inner side and located on the same horizontal plane. A mandibular retention splint, the mandibular retention splint comprising an inner and outer side formed around the mandibular natural dentition, the mandibular retention splint further comprising a plurality of retention connections extending from its inner side and located on the same horizontal plane; Specifically, the position of the maxillary Gothic arch connected to its multiple retention joints is determined based on the position of the maxillary retention splint, and the position of the mandibular Gothic arch connected to its multiple retention joints is determined based on the position of the mandibular retention splint.

7. The apparatus according to claim 6, characterized in that, The inner side of the maxillary retention splint covers the palatal side of the maxillary natural dentition, and the outer side of the maxillary retention splint covers the labial and buccal side of the maxillary natural dentition. The inner and outer sides of the maxillary retention splint are connected at the distal proximal surfaces of the teeth at the end of the dental arch. The medial side of the mandibular retention splint covers the lingual side of the mandibular natural dentition, and the lateral side of the mandibular retention splint covers the labial and buccal side of the mandibular natural dentition. The medial and lateral sides of the mandibular retention splint are connected at the distal proximal surfaces of the distal teeth of the dental arch.

8. The apparatus according to claim 6, characterized in that, The maxillary Gothic bow includes: a tracing plate, a positioning plate, and a positioning screw; wherein the positioning screw fixes the positioning plate to the tracing plate. The mandibular Gothic bow includes: a clasp and a tracing needle spirally connected to the clasp; The tracing plate is parallel to the card plate, and the tracing needle is in contact with the tracing plate.

9. A method for manufacturing a Gothic arch retention device for natural dentition, characterized in that, include: Obtain digital models of the patient's maxillary and mandibular dentition; A digital model of a maxillary retention splint is generated based on the digital model of the maxillary dentition. The maxillary retention splint includes an inner and outer side formed around the maxillary natural dentition. The maxillary retention splint also includes multiple retention connectors extending from its inner side and located on the same horizontal plane. A digital model of a mandibular retention splint is generated based on the digital model of the mandibular dentition. The mandibular retention splint includes an inner and outer side formed around the mandibular natural dentition. The mandibular retention splint also includes multiple retention connectors extending from its inner side and located on the same horizontal plane. A digital model of a maxillary Gothic arch is generated based on the digital model of the maxillary retention splint, wherein the maxillary Gothic arch is connected to multiple retention connections of the maxillary retention splint; a digital model of a mandibular Gothic arch is generated based on the digital model of the mandibular retention splint, wherein the mandibular Gothic arch is connected to multiple retention connections of the mandibular retention splint. 3D printing was performed based on the digital models of the maxillary retention splint, the mandibular retention splint, the maxillary Gothic arch, and the mandibular Gothic arch.

10. The method according to claim 9, characterized in that, The maxillary Gothic bow includes: a tracing plate, a positioning plate, and a positioning screw; wherein the positioning screw fixes the positioning plate to the tracing plate. The mandibular Gothic bow includes: a clasp and a tracing needle spirally connected to the clasp; The tracing plate is parallel to the card plate, and the tracing needle is in contact with the tracing plate.

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