Dental scanning rod and dental scanning system

Abstract

The invention relates to a dental scanning rod and a dental scanning system. The scanning rod dental apparatus comprises: an attachment part (100) configured to attach a scanning rod to an implant or an implant abutment located in an oral cavity; and a scanning portion (200) comprising an elongated body extending laterally from the attachment portion (100), the elongated body comprising a length direction and a width direction, and comprising a top surface (202) comprising a plurality of identification surfaces that assist in scanning when scanning the scan bar with the scanning device, and a bottom surface (204) opposite the top surface (202); wherein the scanning portion (200) comprises at least one boss and / or recess (410, 420) protruding and / or recessed from the top surface (202), the boss and / or recess (410, 420) being shaped in the shape of a pyramid or frustopyramid and the projection of each conical surface of the pyramid or frustopyramid on the top surface (202) forming an identification surface.

Description

Technical Field

[0001] The present disclosure relates to the field of denture implantation, and in particular to a dental scanning arm for oral scanning. Background Art

[0002] In dental implants, the dentist first surgically inserts the implant (or implant abutment) into the dental arch. After the implant is placed in the dental arch, the precise position of the implant needs to be obtained to make the denture. Intraoral scanning technology and digital impressions are increasingly used to accurately obtain the position of the implant.

[0003] In order to obtain the precise position of the implant, a scanning rod fixed to the implant is required. One end of the scanning rod is provided with an attachment portion suitable for being fixed to the implant, and the other end is provided with an identification plate providing scanning features. During use, the scanning rod needs to be placed inside the patient's mouth. Since the denture needs to be precisely matched with the implant or the implant base, the structure of the scanning rod plays a vital role in accurate scanning. It is expected that the structure of the traditional scanning rod can be improved to further improve the scanning accuracy. Summary of the invention

[0004] An object of the present disclosure is to provide a dental scanbar that aims to solve one or more of the above-mentioned problems and other potential problems.

[0005] One aspect of the present disclosure provides a dental scanning rod. The dental scanning rod comprises: an attachment portion configured to attach the scanning rod to an implant or an implant base located in an oral cavity; and a scanning portion comprising an elongated body extending transversely from the attachment portion, the elongated body comprising a length direction and a width direction, and comprising a top surface and a bottom surface opposite to the top surface, the top surface comprising a plurality of identification surfaces that assist in scanning when the scanning rod is scanned by a scanning device; wherein the scanning portion comprises at least one boss and / or depression protruding and / or recessed from the top surface, the boss and / or depression being shaped into a pyramid or a truncated pyramid, and the projection of each cone surface of the pyramid or the truncated pyramid on the top surface forms the identification surface.

[0006] In some embodiments, at least one of the bosses and / or recesses is formed in the shape of a truncated pyramid, and the corresponding edge of the top surface of the boss and / or recess in the width direction is separated from at least one side edge of the scanning portion in the width direction by a first separation distance; wherein the area where the first separation distance is located is formed as at least one first chamfer connecting the corresponding edge of the top surface of the boss and / or recess and the at least one side edge of the scanning portion, and the angle formed by the first chamfer relative to the projection plane is in the range of 30° to 70°.

[0007] In some embodiments, the corresponding edges of the top surface of the protrusion and / or recess in the width direction are separated from the two side edges of the scanning portion in the width direction by the first separation distance, wherein the areas where the first separation distance is located are each formed as the first chamfered surface.

[0008] In some embodiments, at least one of the bosses and / or recesses and at least one platform area are alternately arranged along the length direction, and the at least one platform area has a different height relative to the at least one of the bosses and / or recesses.

[0009] In some embodiments, the top surface of the platform area has a polygonal contour, which has at least four sides, and the corresponding edge of the top surface of the platform area in the width direction is separated from at least one side edge of the scanning portion in the width direction by a second separation distance, and the area where the second separation distance is located is formed as at least one second bevel connecting the corresponding edge of the top surface of the platform area in the width direction and the at least one side edge of the scanning portion, and the angle of the second bevel relative to the projection plane is in the range of 30° to 70°.

[0010] In some embodiments, corresponding edges of the top surface of the platform area in the width direction are separated from two side edges of the scanning portion in the width direction by the second separation distance, wherein the areas where the second separation distance is located are each formed as the second chamfered surface.

[0011] In some embodiments, the scanning portion includes at least two bosses and / or recesses, a first boss and / or recess adjacent to the attachment portion among the at least two bosses and / or recesses has a fourth width in the width direction as its maximum width in the width direction, a second boss and / or recess away from the attachment portion among the at least two bosses and / or recesses has a fifth width in the width direction as its maximum width in the width direction, and the fourth width is smaller than the fifth width.

[0012] In some embodiments, the scanning portion has a second width in the width direction as its maximum width in the width direction, the attaching portion has a first width in the width direction as its maximum width, and the second width is greater than the first width.

[0013] In some embodiments, the scanning portion includes a first scanning area adjacent to the attachment portion and a second scanning area away from the attachment portion, wherein the first scanning area has a third width in the width direction as its maximum width in the width direction, the maximum width of the second scanning area in the width direction is the second width, and the third width is smaller than the second width.

[0014] In some embodiments, the second scanning area includes a first end adjacent to the first scanning area and a second end away from the first scanning area, and the second scanning area includes a first size reducing portion, and the width of the first size reducing portion in the width direction gradually decreases from an area adjacent to the first end toward an area adjacent to the second end.

[0015] In some embodiments, the second scanning area further includes a second size reducing portion located at the second end, and the width of the second size reducing portion in the width direction gradually decreases from an area adjacent to the first size reducing portion toward an end area adjacent to the scanning portion.

[0016] In some embodiments, the area where the second size-reduced portion is located is formed as a third chamfered surface, and an angle formed by the third chamfered surface relative to the projection plane is in a range of 30° to 70°.

[0017] In some embodiments, the second scanning area further includes a transition scanning area transitioning from the first scanning area to the second scanning area, and a width of the transition scanning area in the width direction gradually decreases from an area adjacent to the first scanning area toward an area adjacent to the second scanning area.

[0018] In some embodiments, the transition scanning area includes a platform area and at least one fourth bevel surface arranged at at least one edge of the platform area in the width direction, the top surface of the platform area is formed as a flat surface parallel to the projection plane or a bevel surface at an angle to the projection plane, and the angle of the fourth bevel surface relative to the projection plane is in the range of 30° to 70°.

[0019] In some embodiments, the attachment portion includes, on a top surface thereof, an attachment area and a surrounding area surrounding the attachment area, the attachment area includes a central hole, and the surrounding area includes at least one chamfered surface that is angled with the projection plane.

[0020] In some embodiments, at least one edge of the top surface and / or the bottom surface of the elongated body is chamfered and / or blunted.

[0021] Another aspect of the present disclosure provides a dental scanning system comprising: an oral scanner; and at least two dental scanning arms according to any one of the first aspect, wherein a first dental scanning arm and a second dental scanning arm of the at least two dental scanning arms have elongated bodies of different lengths.

[0022] In some embodiments, at least one chamfered surface disposed in the first dental scanbar and a corresponding chamfered surface disposed at a corresponding position in the second dental scanbar have different angles from each other.

[0023] According to the present disclosure, the modeling accuracy during digital scanning can be improved, and the number and / or area of ​​the identification surfaces of the scanning rod can be further increased without interfering with the scanning rod and adjacent scanning rods and / or oral tissues. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other objects, features and advantages of the embodiments of the present disclosure will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown by way of example and not limitation.

[0025] Figure 1 An overall stereoscopic schematic diagram of a dental scanning rod according to a first embodiment of the present disclosure is shown;

[0026] Figure 2 A schematic top view of a dental scanning rod according to a first embodiment of the present disclosure is shown;

[0027] Figure 3 A cross-sectional schematic diagram of a dental scanning arm according to a first embodiment of the present disclosure is shown;

[0028] Figure 4 An overall stereoscopic schematic diagram of a dental scanning rod according to a second embodiment of the present disclosure is shown;

[0029] Figure 5 A schematic top view of a dental scanning rod according to a second embodiment of the present disclosure is shown;

[0030] Figure 6 shows an overall stereoscopic schematic diagram of a dental scanning rod according to a third embodiment of the present disclosure;

[0031] Figure 7 A schematic top view of a dental scanning rod according to a third embodiment of the present disclosure is shown;

[0032] Figure 8 A schematic side view of a dental scanbar according to a third embodiment of the present disclosure is shown;

[0033] Fig. 9A schematic side view of a dental scanbar according to a fourth embodiment of the present disclosure is shown; and

[0034] Fig.10 A cross-sectional schematic diagram of a dental scan arm according to a first embodiment of the present disclosure is shown.

[0035] In the various drawings, the same or corresponding reference numerals represent the same or corresponding parts. DETAILED DESCRIPTION

[0036] Unless otherwise indicated, corresponding numbers and symbols in different figures generally refer to corresponding regions. The accompanying drawings are drawn to clearly illustrate the relevant aspects of the embodiments and are not necessarily drawn to scale. The edges of features drawn in the drawings do not necessarily represent the end of the feature range.

[0037] References to "one embodiment" or "an implementation" in the framework of this specification are intended to indicate that a particular configuration, structure, or characteristic described with respect to the embodiment is included in at least one embodiment. Therefore, phrases such as "in an embodiment," "in one embodiment," etc., which may appear in various aspects of this specification, do not necessarily refer to exactly the same embodiment. Furthermore, particular configurations, structures, or characteristics may be combined in any appropriate manner in one or more embodiments.

[0038] Figure 1-Figure 3 FIG. 2 shows a schematic diagram of a dental scanning rod 1 according to a first embodiment of the present disclosure. Figure 1-Figure 3 As shown, the dental scanning arm 1 includes an attachment portion 100 and a scanning portion 200. The attachment portion 100 and the scanning portion 200 may be formed integrally. The scanning portion 200 includes an elongated body extending transversely from the attachment portion 100. The attachment portion 100 has a longitudinal direction. Figure 3 In the cross-sectional view shown, the longitudinal direction roughly corresponds to the vertical direction. The attachment portion 100 may include a cylindrical portion 130 extending in the longitudinal direction, and the cylindrical portion 130 may be provided with a central hole 102 extending from the top surface 105 of the attachment portion 100 through the cylindrical portion 130. The central hole 102 is suitable for receiving a fastening screw, and the scanning rod 1 can be fixed to the implant (or implant base, not shown) by the fastening screw. In the illustrated embodiment, the central hole 102 includes a plurality of hole sections with different sizes. It should be understood that the illustrated embodiment is merely exemplary, and the central hole 102 can be formed into any other suitable shape. Considering that these structures are well known in the art, detailed description thereof is omitted. Emphasis will be placed on the features of the scanning rod related to improved scanning accuracy.

[0039] like Figure 1-Figure 3As shown, the scanning portion 200 is in the shape of a generally elongated body, and the scanning portion 200 may include a top surface 202 and a bottom surface 204 opposite to the top surface 202. The projection plane corresponds to the top view of the scanning rod 1. When the scanning rod 1 is fixed together with the implant, the top surface 202 is the area that can be observed or scanned. In this case, the top surface 202 of the scanning portion 200 corresponds to the projection surface. The top surface 202 includes a plurality of identification surfaces (described in detail later) that assist in scanning when the scanning rod is scanned using an oral scanning device (e.g., an oral scanner).

[0040] The attachment portion 100 may be in various shapes, as long as the attachment portion 100 is suitable for being installed with the pressure groove on the dental arch. Figure 1-Figure 3 As shown, the attachment portion 100 is roughly rectangular in shape. In other embodiments, the attachment portion 100 may also be circular, oval or other suitable shapes. The scanning portion 200 has an elongated body extending laterally from the attachment portion 100. The elongated body has a length direction and a width direction. The length of the scanning portion 200 in the length direction is significantly greater than its width. This is particularly suitable for increasing the area used for scanning by the scanning portion 200, which is suitable for applications where implants are required for a full mouth of teeth. The length of the scanning portion 200 can be designed to be several times the width of the attachment portion 100, such as more than 2 times, such as 3 times, 5 times, 8 times, etc.

[0041] In some embodiments, Figure 1-Figure 3 As shown, the scanning portion 200 includes at least one boss and / or recess 410, 420 protruding and / or recessed from the top surface 202. In the illustrated embodiment, the number of bosses 410, 420 is two, and it should be understood that the illustrated embodiment is merely exemplary, and the number of bosses 410, 420 may be one or more.

[0042] In the illustrated embodiment, the bosses 410, 420 as identification features are shown as boss shapes protruding from the top surface, and it should be understood that this is merely exemplary. In an embodiment not shown, instead of the boss, a depression recessed from the top surface can be used as an identification feature. In other embodiments not shown, a shape of a combination of a boss and a depression can be used. In the following description, the boss is used as an example of an identification feature for explanation, and it should be understood that the description of the boss is also applicable to the description of the depression.

[0043] In some embodiments, the bosses and / or recesses 410, 420 are formed in the shape of a pyramid or a truncated pyramid, and the projection of each cone surface of the pyramid or the truncated pyramid on the top surface 202 forms the identification surface. The pyramid or the truncated pyramid can construct an identification surface for scanning by utilizing the boundary between the pyramid or the truncated pyramid and the top surface, the side surface and / or the bottom surface of the scanning rod, and / or the boundary formed by the shape of the pyramid or the truncated pyramid itself and the top surface.

[0044] In the illustrated embodiment, the boss 410 is formed in the shape of a truncated quadrangular pyramid, and each boss 410 provides five identification surfaces 411, 412, 413, 414, and 415 by virtue of its own shape intersecting with the top surface 202. Similarly, the boss 420 is formed in the shape of a truncated quadrangular pyramid, and each boss 410 provides five identification surfaces 421, 422, 423, 424, and 425. In some other embodiments, the boss may also form an identification surface by virtue of the top surface 411, 421 of the boss and the edge and / or surface feature of the scanning rod (for example, the lateral side of the scanning rod or the bottom surface of the scanning rod) (see later). Figure 4-Figure 8 Other embodiments shown are described in detail).

[0045] In the illustrated embodiment, the boss can be formed as three truncated pyramids, five truncated pyramids or other number of truncated pyramids.It should be understood that the illustrated embodiment is merely exemplary.In certain embodiments, the boss can also be formed as a cylinder, a cone, a truncated cone, a pyramid.Compared with a cylinder or a cone, the shape of a pyramid is particularly advantageous because, under the same area, the number of identification faces can be greatly increased.In certain embodiments, the top surface of a cylinder, a truncated cone, a truncated pyramid is formed as a flat surface parallel to a plane.In certain embodiments, the top surface of a cylinder, a truncated cone, a truncated pyramid can be formed as a chamfered surface angled with a plane.

[0046] In some embodiments, the scanning bar can be formed into a generally rectangular shape. In this case, the scanning portion 200 and the attachment portion 100 can have the same width. In some examples, the scanning bar can be formed into a shape with varying widths. The scanning portion 200 and the attachment portion 100 can have different widths, and in particular, the maximum width of the scanning portion 200 is greater than the maximum width of the attachment portion 100. Figure 1-Figure 3 As shown, the attachment portion 100 has a first width W1 as its maximum dimension (ie, maximum width) in the width direction, and the scanning portion 200 has a second width W2 as its maximum dimension in the width direction. The second width W2 is greater than the first width W1.

[0047] By making the maximum width W2 of the scanning unit 200 greater than the maximum width W1 of the attachment unit 100, it is beneficial to increase the scanning accuracy of the scanning unit. Considering the space limitations in the oral cavity, such as the limitations of the dental arch and the tongue, the shape of the scanning unit 200 needs to be designed to avoid interfering with the dental arch or the tongue, thereby causing undue pressure on the patient. By designing the scanning rod to have a size that varies in the width direction, in particular, making the maximum width of the scanning unit 200 greater than the width of the attachment unit 100, these increased widths will increase the area of ​​the scanning unit 200 used for scanning.

[0048] The scanning portion 200 may include a first scanning area 210 adjacent to the attachment portion 100 and a second scanning area 220 away from the attachment portion 100. The first scanning area 210 and the second scanning area 220 may be designed to have different widths. In particular, the width of the scanning portion 200 in the area adjacent to the attachment portion 100 is smaller than the width of the area away from the attachment portion 100. This has the advantage of further increasing the scanning accuracy of the scanning rod and ensuring that the pressure on the user is minimized. Figure 1-Figure 3 As shown, the first scanning area 210 has a maximum width W3 (ie, the third width) in the width direction, and the maximum width of the second scanning area 220 in the width direction may correspond to the maximum width W2 (ie, the second width) of the entire scanning unit 200. The third width W3 is smaller than the second width W2.

[0049] In some embodiments, Figure 1-Figure 3 As shown, the maximum width W3 of the first scanning area 210 can be close to or equal to the maximum width W1 of the attachment part 100. Considering the limited space of the dental arch, the space in the area adjacent to the dental arch is limited. Through this arrangement, the pressure on the dental arch space can be reduced, so that the area with increased width of the scanning part is far away from the dental arch and is located near the area where the tongue surrounded by the dental arch is located. This minimizes the influence of the width change of the scanning part 200 on the extension of the scanning rod 1 in the oral cavity and the influence on other scanning rods in the oral cavity.

[0050] The shape of the second scanning area 220 is not a constant width, but a variable width, which is beneficial for improving the applicability of the scanning rod. Figure 1-Figure 3 As shown, the second scanning area 220 includes a first end adjacent to the first scanning area 210 and a second end away from the first scanning area 210. The second scanning area 220 includes a first size reduction portion 222. The width of the first size reduction portion 222 in the width direction gradually decreases from the area adjacent to the first end toward the area adjacent to the second end. Through the optimized arrangement of this shape, the scanning rod can be reduced near the area where the tongue is located. This is because although the scanning rod has benefits of being away from the dental arch, it cannot be too far away from the dental arch. If the width increase portion is too far away from the dental arch, it will increase the pressure on the tongue and make the user feel uncomfortable; in addition, if the width increase portion is too far away from the dental arch, it will interfere with other scanning rods and affect the arrangement of other scanning rods. According to the present disclosure, the above problems can be solved by the first size reduction portion 222.

[0051] In some embodiments, Figure 1-Figure 3As shown, the second scanning area 220 also includes a second size reduction portion 224 located at the second end. The width of the second size reduction portion 224 in the width direction gradually decreases from the area adjacent to the first size reduction portion 222 toward the end area adjacent to the elongated body. The two side edges 221, 223 of the first size reduction portion 222 in the width direction form an angle. The two side edges 225, 227 of the second size reduction portion 224 in the width direction form an angle. Through this arrangement, the shape of the scanning rod in the end area of ​​the scanning section 220 can be further optimized to improve the applicability of the scanning rod. In the illustrated embodiment, the width of the second size reduction portion 224 in the width direction gradually decreases from the area adjacent to the first size reduction portion 222 toward the end area adjacent to the elongated body. It should be understood that the illustrated embodiment is merely exemplary. In other embodiments (not shown), the width of the second size reduction portion 224 in the width direction gradually decreases from the area adjacent to the first size reduction portion 222 toward the end area adjacent to the elongated body.

[0052] In some embodiments, Figure 1-Figure 3 As shown, the second scanning area 220 also includes a transition scanning area 226 that transitions from the first scanning area 210 to the second scanning area 220. By setting the transition scanning area 226, a region with a varying width is provided, which is beneficial for improving the applicability of the scanning rod. The width of the transition scanning area 226 in the width direction gradually decreases from the region adjacent to the first scanning area 210 toward the region adjacent to the second scanning area 220, wherein the two side edges 228, 229 of the transition scanning area 226 in the width direction form an angle that is an acute angle.

[0053] In some embodiments, the top surface 202 of the scanning portion 200 may be a flat surface. In other embodiments, the top surface 202 of the scanning portion 200 may not be a flat surface, but a surface with a certain inclination (relative to the projection plane). Figure 1-Figure 3 In the illustrated embodiment, the entire area except bosses 410, 420 is formed as an identification surface. In other embodiments, the entire area of ​​top surface 202 except bosses 410, 420 is divided to form more identification surfaces, for example, by forming chamfers with different inclinations to divide top surface 202.

[0054] In some embodiments, Figure 1-Figure 3 As shown, in the case where the scanning unit 200 is provided with a plurality of bosses 410, 420, the plurality of bosses 410, 420 may be formed to have different sizes. This may further improve the accuracy of calculations performed on the scanned data. Figure 2As shown, the size of the boss 410 adjacent to the attachment portion 100 can be formed to be smaller than the size of the boss 420 away from the attachment portion 100, which can make the size of the identification surface of the boss 210 larger. Figure 2 As shown, the first boss 410 adjacent to the attachment portion 100 has a maximum width W4 (ie, the fourth width) in the width direction, and the second boss and / or recess 420 has a maximum width W5 (ie, the fifth width) in the width direction, and the fourth width W4 is smaller than the fifth width W5.

[0055] In some embodiments, at least one edge of the top surface 202 and / or the bottom surface 204 of the elongated body is chamfered and / or blunted. This can improve safety. In some embodiments, at least one edge of the top surface and / or the bottom surface of the attachment portion 100 is also chamfered and / or blunted. Figure 4 and Figure 5 An overall stereoscopic schematic diagram and a top view schematic diagram of a dental scanning rod according to a second embodiment of the present disclosure are respectively shown. Figure 4-Figure 5 The embodiment shown is Figure 1-Figure 3 The embodiment shown is similar, and the description of the same parts is omitted, and the focus is on describing the different parts. Figure 1-Figure 3 Compared to the embodiment shown, Figure 4-Figure 5 The illustrated embodiment adds more identification surfaces and optimizes the sizes of some of the identification surfaces, which is beneficial for further improving the accuracy of calculations performed on the scanned data.

[0056] In some embodiments, Figure 4-Figure 5 As shown, the bosses 410 and 420 may be arranged close to one side edge in the width direction of the top surface of the scanning portion 200. At this time, the edge of the top surface 202 of the scanning portion 200 (corresponding to the side edge in the width direction and / or the edge in the length direction of the corresponding part of the scanning rod) may define the identification surface together with the projection profile of the top surfaces 411 and 421 of the bosses 410 and 420 (this corresponds to the projection profile of the edges in the width direction and the length direction of the top surfaces 411 and 421 of the bosses 410 and 420 in a top view, for example), which may further increase the area of ​​the identification surface without increasing the number of identification surfaces.

[0057] In some embodiments, Figure 4-Figure 5As shown, the bosses 410, 420 are formed in the shape of a truncated pyramid. The projection of the boss 410 itself on the projection plane forms a plurality of identification surfaces 411 (also referred to as the top surface 411 of the boss 410), 412, 414, 415 with the top surface 202. In addition, the projection of the top surface 411 of the boss 410 on the projection plane is separated from a side 251 of the scanning portion 200 in the width direction by a separation distance. The area where the separation distance is located is formed as a chamfered surface 307 connecting the corresponding top surface edge of the boss 410 and the side 251. By this arrangement, the size of the chamfered surface 307 as the identification surface can be formed larger. In some embodiments, the angle formed by the chamfered surface 307 relative to the projection plane is in the range of 30° to 70°, in particular 45°, 55°, 60°, 65°, etc. In the embodiment shown in the figure, the chamfered surface 307 is formed as a single large-area chamfered surface. It should be understood that the illustrated embodiment is exemplary, and the chamfered surface 307 may be further divided into a plurality of chamfered surfaces, for example, by dividing the chamfered surface into a plurality of regions with different inclinations.

[0058] Similarly, the projection of the boss 420 itself on the projection plane forms a plurality of identification surfaces 421 (also referred to as the top surface 421 of the boss 420), 422, 424, 425 with the top surface 202. In addition, the projection of the top surface 421 of the boss 420 on the projection plane is separated from a side 223 of the scanning portion 200 in the width direction by a separation distance. The area where the separation distance is located is formed as a chamfer 305 connecting the corresponding top surface edge of the boss 420 and a side 223. By this arrangement, the size of the chamfer 305 as the identification surface can be formed larger. In some embodiments, the angle formed by the chamfer 307 relative to the projection plane is in the range of 30° to 70°, in particular 45°, 55°, 60°, 65°, etc. The angle of the chamfer 305 can be the same as or different from the angle of the chamfer 307. In the embodiment shown in the figure, the chamfer 305 is formed as a single large-area chamfer. It should be understood that the illustrated embodiment is exemplary, and the chamfered surface 305 may be further divided into a plurality of chamfered surfaces, for example, by dividing the chamfered surface into a plurality of regions with different inclinations.

[0059] In addition to further improving the structure of the bosses 410 and 420, the contour shape of the scanning unit 200 may also be further optimized. Figure 4 and Figure 5 As shown, the second size reduction portion 224 of the scanning portion 200 may also form one or more chamfered surfaces 301, 302. Figure 4 , Figure 5As shown, the two side edges 225, 227 of the second size reduction portion 224 in the width direction and the top surface of the second scanning area 220 can be formed as chamfered surfaces 301, 302 respectively. In some embodiments, the angles formed by the chamfered surfaces 301, 302 relative to the projection plane are in the range of 30° to 70°, specifically 45°, 55°, 60°, 65°, etc. The angles of the chamfered surfaces 301, 302 can be the same or different.

[0060] In some embodiments, Figure 4 and Figure 5 As shown, the transition scanning area 226 of the scanning unit 200 may also be formed with one or more chamfered surfaces 303. Figure 4 , Figure 5 As shown, the top surface 202 of the scanning portion 200 may be formed in the form of a platform. The transition scanning area 226 includes a platform area as a part of the top surface 202 and a chamfered surface 303 disposed on one side of the width direction of the platform area. Figure 4 , Figure 5 As shown, the top surface of the platform area is formed as a flat surface parallel to the projection plane. In other embodiments (not shown), the top surface of the platform area can be divided into multiple identification surfaces by forming an angle with the projection plane. In some embodiments, the angle formed by the chamfered surface 303 relative to the projection plane is in the range of 30° to 70°, in particular 45°, 55°, 60°, 65°, etc. The angle of the chamfered surface 303 can be the same as or different from that of other chamfered surfaces.

[0061] Figure 6-Figure 8 A dental scan arm according to a third embodiment of the present disclosure is respectively shown. Figure 6-Figure 7 The embodiment shown is Figure 6-Figure 8 The embodiment shown is similar, and the description of the same parts is omitted, and the focus is on describing the different parts. Figure 6-Figure 8 Compared to the embodiment shown, Figure 6-Figure 7 The illustrated embodiment adds more identification surfaces and makes the sizes of some of the identification surfaces larger, which is beneficial for further improving the accuracy of calculations performed on the scan data.

[0062] In some embodiments, Figure 6-Figure 8 As shown, the bosses 410 and 420 can be arranged near the center of the scanning portion 200. The two side edges of the top surface 202 of the scanning portion 200 can define the identification surface together with the projection contours of the top surfaces 411 and 421 of the bosses 410 and 420, which can further increase the area of ​​the identification surface without increasing the number of identification surfaces.

[0063] In some embodiments, Figure 6-Figure 8As shown, the bosses 410, 420 are formed in the shape of a truncated pyramid. The projection of the top surface 411 of the boss 410 on the projection plane is separated from the two side edges 251, 252 of the scanning portion 200 in the width direction by a separation distance. The area where the separation distance is located is formed as chamfered surfaces 307, 307 connecting the corresponding top surface edges 451, 452 of the boss 410 and the side edges 251, 252. Through this arrangement, identification surfaces can be formed on both sides of the width direction of the boss 410, and the number of identification surfaces can be further increased. In some embodiments, the angle formed by the chamfered surfaces 307, 308 relative to the projection plane is in the range of 30° to 70°, in particular 45°, 55°, 60°, 65°, etc., and the angles of the chamfered surfaces 307, 308 can be the same or different.

[0064] Similarly, the projection of the top surface 421 of the boss 420 on the projection plane is separated from a side 223, 221 of the scanning portion 200 in the width direction by a separation distance. The area where the separation distance is located is formed as chamfered surfaces 305, 306 connecting the corresponding top surface edges 456, 457 of the boss 420 and the side edges 223, 221. Through this arrangement, identification surfaces can be formed on both sides of the width direction of the boss 410, and the number of identification surfaces can be further increased. In some embodiments, the angle formed by the chamfered surfaces 305, 306 relative to the projection plane is in the range of 30° to 70°, in particular 45°, 55°, 60°, 65°, and the angles of the chamfered surfaces 305, 306 can be the same or different.

[0065] In some embodiments, a plurality of bosses 410, 420 are arranged in sequence along the length direction on the top surface 202 of the scanning unit 200, and the bosses 410, 420 and the platform area 430 are arranged alternately. The platform area 430 has a height difference relative to the bosses 410, 420. In some embodiments, the platform area 430 may have the same height as the reference plane of other parts of the top surface 202 of the scanning unit 200, or may have a different height from the reference plane of other parts of the top surface 202 of the scanning unit 200. In the illustrated embodiment, they are separated by one platform area 430. It should be understood that multiple platforms may have the same shape or different shapes through multiple platform areas with different heights (e.g., two platform areas).

[0066] In some embodiments, the top surface 431 of the platform area 430 has a polygonal profile on the projection plane, and the polygonal profile has at least four sides. For example, it can be four sides, five sides or more sides. The projection of the top surface 431 of the platform area 430 on the projection plane is separated from at least one side edge 221, 223, 228, 229 of the scanning portion 200 in the width direction by a separation distance. The area where the second separation distance is located is formed as a chamfer 303, 304, 305, 306 connecting the top surface edge of the platform area 430 and at least one side edge 221, 223, 228, 229 of the scanning portion 200. The angle formed by the chamfers 303, 304, 305, 306 relative to the projection plane is in the range of 30° to 70°, in particular 45°, 55°, 60°, 65°, etc. The angles of the chamfers 305 and 306 can be the same or different.

[0067] In the illustrated embodiment, the angle of the chamfer formed by the contour edge of the platform area 430 and the side edges 221, 223, 228, 229 of the scanning portion 200 is the same as the angle of the chamfer formed by the bosses 410, 420 and the side edges of the scanning portion 200. It should be understood that this is merely exemplary, and the angle of the chamfer formed by the contour edge of the platform area 430 and the side edges 221, 223, 228, 229 of the scanning portion 200 and the angle of the chamfer formed by the bosses 410, 420 and the side edges of the scanning portion 200 may be different.

[0068] The arrangement of the identification surfaces shown in the figure is merely exemplary. In some embodiments, the number of identification surfaces can be conveniently adjusted by adjusting the number of sides of the polygonal outline of the platform area 430. Figure 7-Figure 9 As shown, the platform area 430 is formed into a flat shape. It should be understood that the illustrated embodiment is merely exemplary, and the platform area 430 may be disposed at a certain angle relative to the projection surface.

[0069] In some embodiments, the attachment portion 100 may also be provided with one or more identification surfaces. Figure 4 , Figure 5 As shown, the attachment portion 100 may include a chamfer 506 at a position adjacent to the boss 410. In some embodiments, these chamfers 506 may be used to identify different scanning rods. For example, the chamfers 506 of different scanning rods may be set at different angles to distinguish the scanning rods from each other. The chamfers may also be set at other positions. Figure 6-Figure 8As shown, the attachment portion 100 includes an attachment area 110 and a surrounding area 120 surrounding the attachment area 110 on its top surface. The surrounding area and the attachment area can be formed in different planes, and an identification surface can be provided. In some embodiments, the surrounding area 120 may include at least one chamfered surface 501, 502, 503, 504, 505, 506, 507 that is angled with the projection plane. Two chamfered surfaces adjacent to each other may have different angles. The number of identification surfaces can be further increased by these chamfered surfaces. The angles formed by the chamfered surfaces 501, 502, 503, 504, 505, 506, 507 relative to the projection plane are in the range of 30° to 70°, in particular 45°, 55°, 60°, 65°, etc.

[0070] Fig. 9 and Fig.10 A side schematic view and a cross-sectional schematic view of a dental scanning arm according to a fourth embodiment of the present disclosure are respectively shown. Fig. 9 and Fig.10 The scanbar shown is Figure 6-Figure 8 The difference is that the cylindrical portion 130 of the attachment portion 100 is configured in a different structure. Figure 9-10 As shown, the outer shape of the cylindrical portion 130 can be further optimized to enhance the compatibility of the scanning rod with different types of implants and / or implant abutments.

[0071] According to the present disclosure, a dental scanning system is also provided. In addition to the oral scanner, the dental scanning system may also include a plurality of dental scanning rods. In some embodiments, the dental scanning rods in the plurality of dental scanning rods may be formed to have different lengths. Considering the different distances between the dental arch and the center of the oral cavity, by setting the scanning rods to different lengths, the coverage area of ​​the scanning rod in the oral cavity can be further increased while avoiding interference between the scanning rod and the organs in the oral cavity and between the scanning rods. In some embodiments, the angles of the beveled surfaces at the corresponding positions of the scanning rods of different lengths are different from each other. In this case, the angles of the beveled surfaces can be used to identify different scanning rods.

[0072] Through the teachings given in the above description and the related drawings, many modifications and other embodiments of the present disclosure given here will be recognized by those skilled in the art of the present disclosure. Therefore, it is to be understood that the embodiments of the present disclosure are not limited to the specific embodiments disclosed, and modifications and other embodiments are intended to be included in the scope of the present disclosure. In addition, although the above description and the related drawings describe the example embodiments in the context of some example combinations of parts and / or functions, it should be appreciated that different combinations of parts and / or functions can be provided by alternative embodiments without departing from the scope of the present disclosure. In this regard, for example, other combinations of parts and / or functions that are different from those clearly described above are also expected to be within the scope of the present disclosure. Although specific terms are used here, they are only used in a general and descriptive sense and are not intended to be limited.

Claims

1. A dental scanning arm (1), comprising: An attachment portion (100) configured to attach the scanning rod to an implant or an implant base located in the oral cavity; as well as A scanning portion (200) comprising an elongated body extending transversely from the attachment portion (100), the elongated body comprising a length direction and a width direction, and comprising a top surface (202) and a bottom surface (204) opposite to the top surface (202), the top surface (202) comprising a plurality of identification surfaces that assist in scanning when the scanning rod is scanned by a scanning device; The scanning portion (200) comprises at least one boss and / or recess (410, 420) protruding and / or recessed from the top surface (202), the boss and / or recess (410, 420) being formed into the shape of a pyramid or a truncated pyramid, and the projection of each cone surface of the pyramid or the truncated pyramid on the top surface (202) forms the identification surface.

2. The dental scanning rod according to claim 1, wherein at least one of the bosses and / or recesses (410, 420) is formed in the shape of a truncated pyramid, and the corresponding edges (451, 452, 456, 457) of the top surfaces (411, 421) of the bosses and / or recesses (410, 420) in the width direction are separated from at least one side edge (251, 252, 221, 223) of the scanning portion (200) in the width direction by a first separation distance; The area where the first separation distance is located is formed as at least one first chamfered surface (305, 306, 307, 308) connecting the corresponding edges (451, 452, 456, 457) of the top surface (411, 421) of the boss and / or recess (410, 420) and the at least one side edge (251, 252, 221, 223) of the scanning portion (200), and the angle formed by the first chamfered surface (305, 306, 307, 308) relative to the projection plane is in the range of 30° to 70°.

3. The dental scanning rod according to claim 2, wherein the corresponding edges (451, 452, 456, 457) of the top surfaces (411, 421) of the bosses and / or recesses (410, 420) in the width direction are respectively separated from the two side edges (251, 252, 221, 223) of the scanning portion (200) in the width direction by the first separation distance, wherein the areas where the first separation distance is located are respectively formed as the first chamfered surfaces (305, 306, 307, 308).

4. The dental scanning rod according to claim 1, wherein at least one of the bosses and / or recesses (410, 420) and at least one platform area (430) are alternately arranged along the length direction, and the at least one platform area (430) has a different height relative to at least one of the bosses and / or recesses (410, 420).

5. The dental scanning rod according to claim 4, wherein the top surface (431) of the platform area (430) has a polygonal profile, the polygonal profile has at least four sides, the corresponding edge of the top surface (431) of the platform area (430) in the width direction is separated from at least one side edge (221, 223, 228, 229) of the scanning portion (200) in the width direction by a second separation distance, the area where the second separation distance is located is formed as at least one second chamfered surface (303, 304, 305, 306) connecting the corresponding edge of the top surface (431) of the platform area (430) in the width direction and the at least one side edge (221, 223, 228, 229) of the scanning portion (200), and the angle formed by the second chamfered surface (303, 304, 305, 306) relative to the projection plane is in the range of 30° to 70°.

6. The dental scanning rod according to claim 5, wherein the corresponding edges of the top surface (431) of the platform area (430) in the width direction are separated from the two side edges (221, 223, 228, 229) of the scanning portion (200) in the width direction by the second separation distance, respectively, and the areas where the second separation distance is located are respectively formed as the second chamfered surfaces (303, 304, 305, 306).

7. The dental scanning rod according to claim 4, wherein the scanning portion (200) comprises at least two bosses and / or recesses (410, 420), a first boss and / or recess (410) of the at least two bosses and / or recesses (410, 420) adjacent to the attachment portion (100) having a fourth width (W4) in the width direction as its maximum width in the width direction, a second boss and / or recess (420) of the at least two bosses and / or recesses (410, 420) away from the attachment portion (100) having a fifth width (W5) in the width direction as its maximum width in the width direction, and the fourth width (W4) is smaller than the fifth width (W5).

8. The dental scanning rod according to any one of claims 1 to 7, wherein the scanning portion (200) has a second width (W2) in the width direction as its maximum width in the width direction, the attachment portion (100) has a first width (W1) in the width direction as its maximum width, and the second width (W2) is greater than the first width (W1).

9. The dental scanning arm according to claim 8, wherein the scanning portion (200) comprises a first scanning area (210) adjacent to the attachment portion (100) and a second scanning area (220) away from the attachment portion (100), The first scanning area (210) has a third width (W3) in the width direction as its maximum width in the width direction, the maximum width of the second scanning area (220) in the width direction is the second width (W2), and the third width (W3) is smaller than the second width (W2).

10. The dental scanning rod according to claim 9, wherein the second scanning area (220) includes a first end adjacent to the first scanning area (210) and a second end away from the first scanning area (210), and the second scanning area (220) includes a first size reduction portion (222), and the width of the first size reduction portion (222) in the width direction gradually decreases from an area adjacent to the first end toward an area adjacent to the second end.

11. The dental scanning rod according to claim 10, wherein the second scanning area (220) further includes a second size reducing portion (224) located at the second end, and the width of the second size reducing portion (224) in the width direction gradually decreases from an area adjacent to the first size reducing portion (222) toward an end area adjacent to the scanning portion (200).

12. The dental scanning arm according to claim 11, wherein the area where the second size-reducing portion (224) is located is formed as a third beveled surface (301, 302), and the angle formed by the third beveled surface (301, 302) relative to the projection plane is in the range of 30° to 70°.

13. The dental scanning rod according to claim 9, wherein the second scanning area (220) further includes a transition scanning area (226) transitioning from the first scanning area (210) to the second scanning area (220), and the width of the transition scanning area (226) in the width direction gradually decreases from an area adjacent to the first scanning area (210) toward an area adjacent to the second scanning area (220).

14. The dental scanning rod according to claim 13, wherein the transition scanning area (226) includes a platform area and at least one fourth beveled surface (303, 304) arranged at at least one edge of the platform area in the width direction, the top surface of the platform area is formed as a flat surface parallel to the projection plane or a beveled surface at an angle to the projection plane, and the angle formed by the fourth beveled surface (303, 304) relative to the projection plane is in the range of 30° to 70°.

15. A dental scan arm according to any one of claims 1-7, 9-14, wherein the attachment portion (100) includes an attachment area (110) and a surrounding area (120) surrounding the attachment area (110) on its top surface, the attachment area (110) including a central hole (102), and the surrounding area (120) including at least one chamfered surface (501, 502, 503, 504, 505, 506, 507) that is angled with the projection plane.

16. The dental scanbar according to any one of claims 1-7, 9-14, wherein at least one edge of the top surface (202) and / or the bottom surface (204) of the elongated body is chamfered and / or blunted.

17. A dental scanning system comprising: Oral scanner; At least two dental scan arms (1) according to any one of claims 1 to 16, wherein the elongated bodies of a first dental scan arm and a second dental scan arm of the at least two dental scan arms have different lengths.

18. The dental scanning system according to claim 17, wherein at least one chamfered surface disposed in the first dental scanning arm and a corresponding chamfered surface disposed at a corresponding position in the second dental scanning arm have different angles.

Images