Portable scanning rod assist device for scanning in planting opening

Abstract

The utility model relates to the technical field of intraoral scanning devices, and particularly discloses a portable scanning rod assist device for implant intraoral scanning. The portable scanning rod assist device comprises a supporting rod which is detachably installed on a scanning rod along the central axis L1 of the scanning rod; the identification part is arranged on the supporting rod along a straight line L2 perpendicular to the L1; the plurality of identification areas are arranged on the identification component in parallel to the L2; identification characters, wherein different identification characters are arranged in each identification area; a three-dimensional model for identifying the component is stored in a design database of the three-dimensional modeling software; by using the oral cavity three-dimensional scanning device, the surface complexity in the oral cavity can be increased, an intraoral scanner can carry out three-dimensional scanning positioning in the oral cavity of a patient, the scanning rod and gingiva at the alveolar ridge crest can be rapidly, efficiently and accurately scanned, and an accurate three-dimensional model of the intraoral surface of the patient is obtained; and the condition that the three-dimensional model acquired by the intraoral scanner is deformed is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of intraoral scanning devices, in particular to a portable scanning rod auxiliary device for implant intraoral scanning. Background Art

[0002] In today's dental field, more and more patients with edentulous arches are choosing implants to improve their oral health and enhance their quality of life. Implants are even called "the third set of teeth" and are highly favored by patients.

[0003] With the advancement of science and technology, the use of intraoral scanners in the field of implants has received strong support. More and more dental hospitals, clinics, and processing companies have begun to use intraoral scanning technology to convert digital impressions or digital models of implants.

[0004] However, for patients with extensive edentulousness and multiple implants, the alveolar ridge, after long-term loss and remodeling, can become highly uniform in surface morphology. For patients with multiple mandibular implants, the alveolar ridge can even be very narrow. In some cases, the alveolar ridge is resorbed to the point where the top of the alveolar ridge is aligned with the floor of the mouth or the transition of the oral mucosa. The oral mucosa consists of both movable and immovable mucosa. For patients with prolonged loss, the immovable mucosa gradually loses both height and width, leaving it with less and narrower surfaces.

[0005] However, existing intraoral scanning technologies rely on superimposing surface images. Therefore, the more complex the morphology, the easier it is to scan. If the patient's defect is too long, the immobile mucosa is too uniform, or the width and height are too small, superimposing the intraoral surface images becomes extremely difficult, and errors are likely to occur, resulting in reduced digital impression accuracy and restoration failure.

[0006] Existing intraoral scanning technology requires inserting a scanning rod into the implant access port and scanning by a technician, creating a 3D model of the patient's mouth within 3D modeling software. Scanning rods are typically cylindrical, with varying shapes at the top to match the design database within the 3D modeling software. The closer the scanned rod model matches the 3D model within the design database, the more accurate the scan of the patient's oral surface, the more precise the implant placement, and the more comfortable the implant restoration.

[0007] However, in actual operation, when the intraoral scanner is scanning, the surface morphology of the patient's mouth is highly consistent due to the patient's large tooth defects, too much missing teeth for too long, and the long-term loss and reconstruction of the alveolar ridge. This will easily lead to the scanning deformation of the scanning rod and superposition errors, and it is impossible to obtain a high-precision three-dimensional model of the patient's oral surface. Utility Model Content

[0008] In response to the above-mentioned problems in the prior art, the present invention provides a portable scanning rod auxiliary device for implant intraoral scanning, the purpose of which is to prevent the deformation of the three-dimensional model and ensure the accuracy of the acquired oral model.

[0009] In order to achieve the above-mentioned utility model purpose, the technical solution adopted by the utility model is as follows:

[0010] A portable scanning rod auxiliary device for intraoral scanning of implants is provided, comprising: a support rod detachably mounted on the scanning rod along a central axis L1 of the scanning rod; an identification component arranged on the support rod along a straight line L2 perpendicular to L1; a plurality of identification areas arranged on the identification component parallel to L2; identification characters, with different identification characters being arranged in each identification area; and a three-dimensional model of the identification component stored in a design database of three-dimensional modeling software.

[0011] Furthermore, the identification area includes at least: C1 area, C2 area and C3 area, which are arranged circumferentially on the identification component with L2 as the central axis; wherein, the plane in which L1 and L2 are located is Π1, the C2 area is arranged perpendicular to Π1, and the C1 area and C3 area are symmetrically arranged on both sides of the C2 plane with Π1 as the center of symmetry.

[0012] Furthermore, the identification component is formed by splicing a quadrangular prism and a triangular prism parallel to L2; with the scanning rod as a reference, along the direction of L1, from near to far, the cross-sectional area of the identification component gradually increases.

[0013] Furthermore, assume that Π1⊥Π2; on Π2, the projection of the quadrangular prism is a square, the projection of the triangular prism is an isosceles triangle, and one of the side surfaces of the quadrangular prism is joined with the bottom surface of the triangular prism to form an identification component; wherein, the side surface of the quadrangular prism away from the triangular prism is the C2 area; the two side surfaces of the quadrangular prism on both sides of the C2 area are respectively connected to the two side surfaces of the triangular prism and form the C1 area and the C3 area.

[0014] Furthermore, in the C1 and C3 regions, a number of steps parallel to Π2 are symmetrically arranged on the identification component; with the scanning rod as a reference, along the direction of L1, from far to near, the lengths of the steps are the same, the widths of the steps decrease, and the thicknesses increase.

[0015] Furthermore, six steps are provided, namely B1, B2, B3, B4, B5 and B6; in the width direction of the steps, the widths of the six steps are D1, D2, D3, D4, D5 and D6, respectively; among them, D1-D2=0.45mm, D2-D3=0.38mm, D3-D4=0.25mm, D4-D5=0.25mm, D5-D6=0.25mm; in the thickness direction of the steps, the widths of the six steps are H1, H2, H3, H4, H5 and H6, respectively; among them, H2-H1=0.4mm, H3-H2=0.6mm, H4-H3=0.9mm, H5-H4=1mm, H6-H5=1mm.

[0016] Furthermore, the recognition characters include: a first type of characters recessed in the surface of the recognition component and a second type of characters protruding from the surface of the recognition component.

[0017] Furthermore, the depth of the first type of characters sunken into the surface of the identification component is 1 mm, the height of the second type of characters protruding from the surface of the identification component is 1 mm, and the thickness of the font strokes of the first type of characters and the second type of characters are both 0.8 mm.

[0018] Furthermore, with the scanning rod as a reference, along the direction of L1, from near to far, the support rod is divided into: A1 segment, A2 segment, A3 segment and A4 segment; wherein, A1 segment, A2 segment and A3 segment are all cylindrical, and the radius R1 of A1 segment is less than the radius R2 of A2 segment and less than the radius R3 of A3 segment; A4 segment is a rectangular parallelepiped, arranged on A3 segment, and extends toward the identification component.

[0019] Furthermore, the auxiliary device also includes an installation gap arranged parallel to L1 and having a width of 0.1 to 0.3 mm, and the installation gap passes through the support rod.

[0020] The beneficial effects of the present invention are as follows: in the present invention, an identification component is added to the scanning rod, and by setting identification characters on the identification component, the surface complexity of the oral cavity can be increased, so that the intraoral scanner can perform three-dimensional scanning and positioning in the patient's oral cavity, and can quickly and efficiently perform accurate scanning of the scanning rod and the gums at the top of the alveolar ridge, obtain an accurate three-dimensional model of the patient's intraoral surface, and avoid deformation of the three-dimensional model obtained by the intraoral scanner. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the C1 region provided by the present invention;

[0022] Figure 2 A schematic diagram of the C2 region provided by the present invention;

[0023] Figure 3A schematic diagram of the C3 region provided by the present invention;

[0024] Figure 4 A schematic diagram of the overall structure of the auxiliary device provided by the utility model;

[0025] Figure 5 A number table of the six auxiliary devices provided by the utility model;

[0026] Among them, 1. Support rod; 2. Identification parts. DETAILED DESCRIPTION

[0027] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] Example 1

[0029] Reference Figures 1 to 3 As shown, in this embodiment, a portable scanning rod auxiliary device for intra-implantation scanning is provided, including: a support rod 1, which is detachably mounted on the scanning rod along the central axis L1 of the scanning rod; an identification component 2, which is arranged on the support rod 1 along a straight line L2 perpendicular to L1; a plurality of identification areas, which are arranged on the identification component 2 parallel to L2; identification characters, and different identification characters are arranged in each identification area; and a three-dimensional model of the identification component 2 is stored in the design database of the three-dimensional modeling software.

[0030] In the present invention, an identification component 2 is added to the scanning rod. By setting identification characters on the identification component 2, the surface complexity of the oral cavity can be increased, allowing the intraoral scanner to perform three-dimensional scanning and positioning in the patient's mouth. The scanning rod and the gums at the top of the alveolar ridge can be quickly and efficiently scanned accurately to obtain an accurate three-dimensional model of the patient's intraoral surface and avoid deformation of the three-dimensional model obtained by the intraoral scanner.

[0031] In addition, in the present invention, the three-dimensional model of the intraoral surface obtained by the intraoral scanner also includes the three-dimensional model of the identification component 2. In the three-dimensional modeling software, the three-dimensional model of the identification component 2 obtained by scanning and the three-dimensional model of the identification component 2 stored in the design database can also be compared in terms of various dimensional parameters, so as to verify the accuracy of the obtained three-dimensional model of the oral surface through this comparison.

[0032] Of course, in actual scanning work, multiple scans should be performed, and the three-dimensional model with the smallest difference should be selected as the design basis for the dental implant through comparison of size parameters.

[0033] It is worth mentioning that the scanning rods currently available on the market for implant positioning all have a through hole at the top of the scanning rod for the passage of a screw. The support rod 1 can be locked on the scanning rod by a retaining screw to complete the fixation of the auxiliary device.

[0034] It is worth mentioning that the scanning rod usually protrudes 10-15mm from the gums, the diameter of the scanning rod is generally 4mm, and the screw hole at the top of the scanning rod is cylindrical, generally with a diameter of 2.25-2.6mm.

[0035] In the present invention, with the scanning rod as a reference, the support rod 1 is divided into: A1 segment, A2 segment, A3 segment and A4 segment from near to far along the direction L1; wherein, the A1 segment, A2 segment and A3 segment are all cylindrical, and the radius R1 of the A1 segment is less than the radius R2 of the A2 segment and less than the radius R3 of the A3 segment; the A4 segment is a rectangular parallelepiped, arranged on the A3 segment, and extends toward the identification component 2.

[0036] In this embodiment, 2R1=2.1mm, and the height of the A1 segment is 4~4.3mm. The user can quickly complete the positioning and installation of the auxiliary device by inserting the A1 segment into the through-hole of the scanning rod; it is worth mentioning that some scanning rod through-holes are circumferentially provided with a wire ring, which protrudes from the inner wall surface of the through-hole and is used to clamp the thread of the retaining screw to prevent it from falling off; the A1 segment in the present utility model can pass through the wire ring.

[0037] In this embodiment, 2R2=2.5-2.8 mm, the height of segment A2 is 1.2-2.0 mm, and after the support rod 1 is inserted into the through hole, segment A2 is located above the wire ring and plays a major role in retaining the wire ring.

[0038] In this embodiment, 2R3=2.8~3.0mm, and the height of segment A3 is 0.5mm; of course, the diameter of segment A3 is designed according to the actual size of the through hole. The diameter of segment A3 is 0.1mm larger than the diameter of the through hole, which is used to limit the support rod 1 from continuing to insert into the through hole and distinguish the stop position of segment A2.

[0039] In this embodiment, the A4 segment is a rectangular parallelepiped with a length of 5 mm, a width of 2.2 mm, and a height of 3 mm. In specific installation, the length direction of the A4 segment is installed parallel to L2, the width direction of the A4 segment is installed perpendicular to L2, and the height direction of the A4 segment is installed parallel to L1; among them, one of the end faces of the A4 segment is perpendicularly arranged on the A3 segment, and the end face is 1.1 mm away from the center of the circle of the A3 segment. In the width direction, both side faces of the A4 segment are also installed at a distance of 1.1 mm from the center of the circle of the A3 segment.

[0040] Specifically, the auxiliary device also includes an installation gap with a width of 0.1 to 0.3 mm set parallel to L1. The installation gap runs through the support rod 1 for the staff to pinch and change the size of the installation gap, thereby changing the size of the support rod 1, eliminating the influence of tolerances in production and manufacturing, and ensuring that the support rod 1 can be quickly inserted into the through hole.

[0041] Example 2

[0042] In this embodiment, the identification area includes at least: C1 area, C2 area and C3 area, which are arranged circumferentially on the identification component 2 with L2 as the central axis; wherein, the plane in which L1 and L2 are located is Π1, the C2 area is arranged perpendicular to Π1, and the C1 area and the C3 area are symmetrically arranged on both sides of the C2 plane with Π1 as the center of symmetry.

[0043] Specifically, the identification component 2 is composed of a quadrangular prism and a triangular prism parallel to L2; with the scanning rod as a reference, along the direction of L1, from near to far, the cross-sectional area of the identification component 2 gradually increases.

[0044] It can be understood that in the present invention, with the gum as the reference, the cross-sectional area of the identification component 2 gradually increases from near to far, which can prevent interference between the identification component 2 and the natural teeth and ensure that the identification component 2 can be installed normally.

[0045] Specifically, assume Π1⊥Π2; on Π2, the projection of the quadrangular prism is a square, the projection of the triangular prism is an isosceles triangle, and one of the side surfaces of the quadrangular prism is joined with the bottom surface of the triangular prism to form the identification component 2; wherein, the side surface of the quadrangular prism away from the triangular prism is the C2 area; the two side surfaces of the quadrangular prism on both sides of the C2 area are respectively connected with the two side surfaces of the triangular prism to form the C1 area and the C3 area.

[0046] In the present invention, area C2 is a flat plane, while areas C1 and C3 are composed of two planes with a certain angle. During the scanning process, the user needs to hold the scanner from area C1 to area C2 to area C3, and then from area C3 to area C2 back to area C1, and repeat this cycle until the scanning is completed. In such a scanning path, the scanner can alternately pass through regular and irregular scanning areas, which can enable the data models obtained by the scanner to be quickly superimposed, reduce or even eliminate the deformation of the three-dimensional model, and ensure the improvement of scanning efficiency while also ensuring the accuracy of the obtained three-dimensional model.

[0047] It is worth mentioning that along the L2 direction, there is a 2.5mm margin on both sides of the recognized characters in the C2 area.

[0048] Example 3

[0049] Reference Figure 4As shown, in this embodiment, in the C1 and C3 areas, a number of steps parallel to Π2 are symmetrically arranged on the identification component 2; with the scanning rod as a reference, along the direction of L1, from far to near, the lengths of the steps are the same, the widths of the steps decrease, and the thicknesses increase.

[0050] Specifically, there are six steps, namely B1, B2, B3, B4, B5 and B6; in the width direction of the steps, the widths of the six steps are D1, D2, D3, D4, D5 and D6, respectively; among them, D1-D2=0.45mm, D2-D3=0.38mm, D3-D4=0.25mm, D4-D5=0.25mm, D5-D6=0.25mm; in the thickness direction of the steps, the widths of the six steps are H1, H2, H3, H4, H5 and H6, respectively; among them, H2-H1=0.4mm, H3-H2=0.6mm, H4-H3=0.9mm, H5-H4=1mm, H6-H5=1mm.

[0051] On the one hand, by setting the above-mentioned steps, the obstruction of the gums, the scanning rod and itself by the auxiliary device can be effectively reduced, which is conducive to the smooth progress of the scanning work; on the other hand, the recognition characters in the C1 area and the C3 area can be distorted to form special patterns on the recognition component 2, so that the three-dimensional data obtained by the scanner can be quickly superimposed during the scanning process, and there will be no problems of misalignment or inability to superimpose similar shapes.

[0052] Preferably, on the A4 segment, one side of the support rod 1 is covered with a rectangular parallelepiped with a width of 3.7 mm and a height of 3 mm, which is 0.75 mm wider than the A4 segment in the width direction. Below the rectangular parallelepiped is B1, and the height of B1 is 0.4 mm.

[0053] In this embodiment, the recognized characters include: first-category characters recessed in the surface of the recognition component 2 and second-category characters protruding from the surface of the recognition component 2; the depth of the first-category characters recessed in the surface of the recognition component 2 is 1 mm, and the height of the second-category characters protruding from the surface of the recognition component 2 is 1 mm. The thickness of the font strokes of the first-category characters and the second-category characters are both 0.8 mm.

[0054] Since the surface texture structures of the identification component 2 are of different shapes, the scanner can complete the scanning in one time, and the scanning effect is ideal, which can effectively reduce the patient's scanning time and improve the patient's comfort and experience.

[0055] Example 4

[0056] In this embodiment, the second type of characters are located in areas C1 and C3, and the first type of characters are located in area C2.

[0057] It is worth mentioning that depending on the number of missing teeth of the patient, the user needs to choose a different number of auxiliary devices.

[0058] Reference Figure 5 As shown, in this embodiment, taking English letters as identification characters as an example, six assistants are provided, numbered L1, L2, L3, L4, L5 and L6 respectively.

[0059] In this embodiment, three different recognition characters are respectively set in the C1 area and the C3 area, and the six recognition characters in the C2 area are composed of the three recognition characters in the C1 area and the C3 area.

[0060] In actual use, generally one auxiliary device is sufficient for two adjacent teeth. When there are multiple teeth, it is sufficient to ensure that there is an auxiliary device in each gap.

[0061] Of course, different identification characters should be printed on the aids with different numbers; scanbar aids with the same number should not appear in the same dentition to prevent scanning errors. Typically, patients have 4-8 implants in a dentition, with 4-6 being the most common. Since the aids are not needed between scanbars that are closely spaced, a set of 6 aids is sufficient for most clinical situations.

[0062] Among them, the scanned data of the patient's inner oral surface is placed in the 3D modeling software, and can be directly matched and positioned with the conventional scanning rod database. Since the auxiliary device participates in scanning and superimposed modeling, the probability of deformation of the scanning rod can be greatly reduced, so the accuracy of the entire restoration can be effectively guaranteed and the rework rate can be reduced; the auxiliary device can be adapted to most implant scanning rods, has strong versatility, and can be reused after disinfection, which can greatly reduce medical costs.

[0063] It is worth mentioning that this auxiliary device can be formed in one piece through 3D printing, and the entire surface of the auxiliary device is subjected to a 40-70 micron frosted micro-roughening treatment. The micro-roughened surface morphology can effectively prevent surface reflection, thereby improving scanning effect and efficiency.

[0064] Of course, the edges of the auxiliary device should be chamfered to prevent scratches on the patient and to reduce shielding to ensure scanning effect.

[0065] Those skilled in the art will appreciate that, although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they become aware of the underlying inventive concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Clearly, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, the present invention is intended to encompass such changes and modifications if they fall within the scope of the claims and equivalents of the present invention.

Claims

1. A portable scanning rod auxiliary device for implant intraoral scanning, characterized in that: include: A support rod (1) is detachably mounted on the scanning rod along the central axis L1 of the scanning rod; The identification component (2) is arranged on the support rod (1) along a straight line L2 perpendicular to L1; A plurality of identification areas are arranged on the identification component (2) parallel to L2; Identification characters: different identification characters are set in each identification area; Furthermore, a three-dimensional model of the identification component (2) is stored in a design database of the three-dimensional modeling software.

2. The portable scanning rod auxiliary device for intraoral scanning of implants according to claim 1 is characterized in that: The identification area at least includes: a C1 area, a C2 area, and a C3 area, which are arranged on the identification component (2) along the circumferential direction with L2 as the central axis; Among them, the plane where L1 and L2 are located is Π1, the C2 region is arranged perpendicular to Π1, and the C1 region and the C3 region are symmetrically arranged on both sides of the C2 plane with Π1 as the symmetry center.

3. The portable scanning rod auxiliary device for intraoral scanning of implants according to claim 2, characterized in that: The identification component (2) is formed by splicing a quadrangular prism and a triangular prism parallel to L2; with the scanning rod as a reference, along the direction of L1, from near to far, the cross-sectional area of the identification component (2) gradually increases.

4. The portable implant intraoral scanning scanning rod auxiliary device according to claim 3 is characterized in that Π1⊥Π2; on Π2, the projection of the quadrangular prism is a square, the projection of the triangular prism is an isosceles triangle, and one of the side surfaces of the quadrangular prism is joined to the bottom surface of the triangular prism to form an identification component (2); Among them, the side surface of the quadrangular prism away from the triangular prism is the C2 area; the two side surfaces of the quadrangular prism on both sides of the C2 area are respectively connected to the two side surfaces of the triangular prism to form the C1 area and the C3 area.

5. The portable scanning rod auxiliary device for intraoral scanning of implants according to claim 3 is characterized in that: In the C1 and C3 regions, a plurality of steps parallel to Π2 are symmetrically arranged on the identification component (2); with the scanning rod as a reference, along the direction of L1, from far to near, the lengths of the steps are all the same, the widths of the steps decrease, and the thicknesses increase.

6. The portable scanning rod auxiliary device for intraoral scanning of implants according to claim 5, characterized in that: There are six steps, namely B1, B2, B3, B4, B5 and B6; In the width direction of the steps, the widths of the six steps are D1, D2, D3, D4, D5 and D6 respectively; among which, D1-D2=0.45mm, D2-D3=0.38mm, D3-D4=0.25mm, D4-D5=0.25mm, D5-D6=0.25mm; In the thickness direction of the steps, the widths of the six steps are H1, H2, H3, H4, H5 and H6 respectively; among them, H2-H1=0.4mm, H3-H2=0.6mm, H4-H3=0.9mm, H5-H4=1mm, H6-H5=1mm.

7. The portable scanning rod auxiliary device for intraoral scanning of implants according to claim 1 is characterized in that: The identification characters include: first-type characters recessed in the surface of the identification component (2) and second-type characters protruding from the surface of the identification component (2).

8. The portable scanning rod auxiliary device for intraoral scanning of implants according to claim 7, characterized in that: The depth of the first type of characters recessed into the surface of the identification component (2) is 1 mm, the height of the second type of characters protruding from the surface of the identification component (2) is 1 mm, and the thickness of the strokes of the first type of characters and the second type of characters are both 0.8 mm.

9. The portable scanning rod auxiliary device for intraoral scanning of implants according to claim 1, characterized in that: Taking the scanning rod as the reference, along the direction of L1, from near to far, the support rod (1) is divided into: A1 segment, A2 segment, A3 segment and A4 segment; Wherein, segment A1, segment A2 and segment A3 are all cylindrical, and the radius R1 of segment A1 is less than the radius R2 of segment A2 and less than the radius R3 of segment A3; The A4 segment is a rectangular parallelepiped, is arranged on the A3 segment, and extends toward the identification component (2).

10. The portable scanning rod auxiliary device for intraoral scanning of implants according to claim 1, characterized in that: It also includes an installation gap arranged parallel to L1 and having a width of 0.1 to 0.3 mm, and the installation gap passes through the support rod (1).

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