A digital 3D implant guide

Abstract

The present invention provides a digital 3D implant guide, comprising: a dental membrane: the dental membrane is made one-to-one according to oral data information of a patient; a hole position: the dental membrane comprises a hole position, the hole position is the position where the patient needs to implant a tooth, and the hole position is drilled on the dental membrane by a drill bit of a numerically controlled machine tool; a tooth fixing block assembly, the tooth fixing block assembly comprises a tooth fixing block, the tooth fixing block is pre-placed in the hole position, and the tooth fixing block is fixedly connected to the dental mold; the outside of the dental membrane comprises a dental diaphragm, so that the tooth fixing block is fixed on the dental diaphragm.

Description

Technical Field

[0001] The invention relates to the technical field of planting guide plate manufacturing, and in particular to a digital 3D planting guide plate. Background Art

[0002] When a dentist performs a dental implant surgery, he or she needs to make precise holes in the area where the implant is to be placed. Traditional dental implant drilling methods cannot accurately locate the holes and are based solely on the dentist's experience, resulting in insufficient drilling accuracy and stability, and posing surgical risks.

[0003] In order to overcome the defects of traditional dental implant drilling, implant guides are used in related fields to achieve precise positioning and stable drilling. At present, most implant guides are printed using 3D printing technology, and guide holes are provided on the implant guides. After the patient wears the implant guides, the center of the implant part can be determined to achieve precise and stable drilling. However, for implant guides printed using 3D printing technology, the printing layer height has a greater impact on the accuracy of the guides. In order to meet the accuracy requirements of the guides, the printing layer height needs to be reduced, but at the same time the printing time will increase exponentially. This patent provides a fast and accurate method for making implant guides. Summary of the invention

[0004] The purpose of the present invention is to provide a digital 3D implant guide to solve the problem that the traditional implant guide in the related art cannot achieve both efficiency and precision.

[0005] The present invention provides a digital 3D implant guide, comprising:

[0006] Dental film: the dental film is made one-to-one according to the patient's oral data information;

[0007] Hole position: The dental membrane includes a hole position, which is the position where the patient needs to implant a tooth. The hole position is drilled on the dental membrane by a drill bit of a CNC machine tool;

[0008] A tooth fixing block assembly, the tooth fixing block assembly comprises a tooth fixing block, the tooth fixing block is pre-placed in the hole, and the tooth fixing block is fixedly connected to the tooth mold;

[0009] The dental membrane includes a dental film outside, so that the tooth fixing block is fixed on the dental film.

[0010] Furthermore, the dental membrane is made into a one-to-one dental mold of the patient using 3D printing technology.

[0011] Furthermore, the relative position of the tooth fixing block on the dental model is:

[0012] Drill bit blade length L = planned bone drilling depth C + gum height B + tooth fixing block height A.

[0013] Furthermore, the required drilling depth C' on the dental model is:

[0014] The length of the root fixing pin L' = the required drilling depth C' on the dental model + the gum height B + the tooth fixing block height A.

[0015] Furthermore, the tooth fixing block assembly comprises a tooth root fixing pin, a tooth fixing block and a tooth fixing pin, and the tooth fixing block is fixed on the dental mold via the tooth root fixing pin and the tooth fixing pin.

[0016] Furthermore, the root fixing nail includes a root column, a platform portion, and a fixed cylinder. The platform portion is fixedly arranged at one end of the root column, and the platform portion and the root column form a "T"-shaped structure. The fixed cylinder is fixedly arranged at the platform portion, and the shape of the fixed cylinder is circular.

[0017] Furthermore, the two side surfaces of the tooth fixing block are vertical planes, a hollow circular through hole is provided in the middle of the tooth fixing block, the outer diameter of the fixed cylinder is smaller than the inner diameter of the circular through hole, the tooth fixing block can be sleeved on the outer side of the fixed cylinder through the circular through hole, and the platform portion limits the tooth fixing block so that the tooth fixing block is located above the platform portion.

[0018] Furthermore, the fixing cylinder includes a threaded hole, which is arranged in the middle of the fixing cylinder, and the threaded hole is provided with an internal thread, and the tooth fixing nail is provided with an external thread, and the two cooperate with each other to fix the tooth fixing block to the fixing cylinder, and then fix the tooth fixing block to the root fixing nail.

[0019] Furthermore, the tooth fixing nail is composed of a top plate and a threaded column, the threaded column is fixed below the top plate, and the threaded column is threadedly connected to the threaded hole.

[0020] Furthermore, the root post, the platform portion, the fixing cylinder, the tooth fixing block, the top plate and the threaded post are all made of titanium-containing alloy.

[0021] Compared with the related art, the present invention has the following beneficial effects:

[0022] The present invention provides a digital 3D implant guide, which creatively uses a numerical control machine tool to drill holes in a patient's dental mold, and uses a tooth fixing block assembly to fix the tooth fixing block to the dental mold, and then uses a laminating machine to laminarize the dental mold, so that the tooth fixing block is fixed on the dental film, and finally a 3D implant guide with a tooth fixing block is obtained. The digital 3D implant guide provided by the present invention can realize the production of a high-precision, digital implant guide. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A pre-installed view of a digital 3D implant guide according to the present invention;

[0024] Figure 2A pre-installed view of the placement of a root fixation pin in a digital 3D implant guide according to the present invention;

[0025] Figure 3 This is an exploded view of a tooth fixing block assembly of a digital 3D implant guide described in the present invention.

[0026] Numbers in the figure:

[0027] Y, dental model; 1, root fixing pin; 2, root column; 3, platform part; 4, fixing cylinder; 5, tooth fixing block; 6, tooth fixing pin; 7, top plate; 8, threaded column; 9, rotation auxiliary groove; 10, circular through hole; 11, threaded hole; 12, clamping strip. DETAILED DESCRIPTION

[0028] Hereinafter, the present invention will be further described based on preferred embodiments with reference to the accompanying drawings.

[0029] In addition, various components on the drawings are enlarged (thickened) or reduced (thinned) for ease of understanding, but this practice is not intended to limit the protection scope of the present invention.

[0030] Words importing the singular also include the plural and vice versa.

[0031] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, in order to distinguish different units, the words "first", "second" and the like are used in this specification, but these are not limited by the order of manufacture, nor can they be understood as indicating or implying relative importance, and their names may be different in the detailed description of the invention and the claims.

[0032] The words in this specification are used to illustrate the embodiments of the present invention, but are not intended to limit the present invention. It should also be noted that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the above-mentioned specific meanings in the present invention can be specifically understood.

[0033] The present invention provides a digital 3D implant guide, comprising:

[0034] Dental film: the dental film is made one-to-one according to the patient's oral data information;

[0035] Hole position: The dental membrane includes a hole position, which is the position where the patient needs to implant a tooth. The hole position is drilled on the dental membrane by a drill bit of a CNC machine tool;

[0036] A tooth fixing block assembly, the tooth fixing block assembly comprises a tooth fixing block, the tooth fixing block is pre-placed in the hole, and the tooth fixing block is fixedly connected to the tooth mold;

[0037] The dental membrane includes a dental film outside, so that the tooth fixing block is fixed on the dental film.

[0038] The following is a brief description of a digital 3D implant guide in combination with a digital 3D implant guide method, including the following steps:

[0039] A: Obtain the patient's oral data information, and make a one-to-one dental model Y of the patient based on the acquired patient's oral data information;

[0040] B: Based on the acquired oral data information of the patient, obtain the information on the dental implant required on the dental model Y;

[0041] C: Send the dental model Y made in step A to a CNC machine tool to perform drilling processing on the part of the patient where the dental implant is required;

[0042] D: Place the dental model Y after the drilling process in step C into the hole, and fix the dental model Y with the dental fixing block 5;

[0043] E: placing the dental mold Y with the tooth fixing block 5 fixed thereto in step D on a laminating machine, placing a dental film on the laminating machine, and laminating the dental mold Y so that the tooth fixing block 5 is fixed on the dental film;

[0044] F: Remove the dental film covering the dental model Y obtained in step E to make a 3D implant guide.

[0045] In step D, the tooth root fixing block assembly includes a root fixing nail 1, a tooth fixing block 5, and a tooth fixing nail 6. The root fixing nail 1 includes a root column 2, a platform portion 3, and a fixed cylinder 4. The platform portion 3 is fixedly arranged at the top end of the root column 2, and the platform portion 3 and the root column 2 are in a "T" shape. The fixed cylinder 4 is fixedly arranged at the top of the platform portion 3, and the shape of the fixed cylinder 4 is circular.

[0046] Furthermore, a hollow circular through hole 10 is provided in the middle of the tooth fixing block 5, and the outer diameter of the fixing cylinder 4 is smaller than the inner diameter of the circular through hole 10. The tooth fixing block 5 can be sleeved on the outer side of the fixing cylinder 4 through the circular through hole 10, and the platform part 3 limits the tooth fixing block 5 so that the tooth fixing block 5 is located on the platform part 3.

[0047] Furthermore, the fixing cylinder 4 includes a threaded hole 11, which is arranged in the middle of the fixing cylinder 4, and the threaded hole 11 is provided with an internal thread, and the tooth fixing nail 6 is provided with an external thread, and the two cooperate with each other to fix the tooth fixing block 5 with the fixing cylinder 4, and then fix the tooth fixing block 5 with the tooth root fixing nail 1. The function of the tooth root fixing nail 1 and the tooth fixing nail 6 is to fix the tooth fixing block 5 on the dental mold Y, and ensure that the tooth fixing block 5 is fixedly connected with the dental mold Y.

[0048] In step D, the assembled tooth fixing block assembly is placed in the dental mold Y after the drilling process is completed. Specifically, the root post 2 is inserted into the dental mold Y after the drilling process is completed, and then the tooth fixing block 5 is also fixedly connected to the dental mold Y through the root fixing pin 1. Then, after step E, the dental membrane pressed on the dental mold Y is wrapped around the outside of the dental mold Y. At this time, the tooth fixing block 5 is also wrapped in the dental membrane. Then, step F is performed to remove the dental membrane covering the dental mold Y, and a 3D implant guide with a tooth fixing block 5 is obtained.

[0049] The digital 3D implant guide provided by the present invention is described in further detail below.

[0050] It should be noted that the present invention does not limit the method of making the patient's dental model Y in step A. In this embodiment, the patient's dental model Y in step A is made in the following manner:

[0051] The patient's oral cavity is scanned to obtain the patient's oral data information, and based on the obtained patient's oral data information, a one-to-one dental mold Y of the patient is made using 3D printing technology.

[0052] In other embodiments, the patient's dental model Y may be made one-to-one using plaster.

[0053] Specifically, in this embodiment, step A specifically includes:

[0054] A1: Use an intraoral scanner to obtain a 3D digital image of the patient's intraoral soft tissue, and use an oral CBCT device to obtain a 3D oral image of the patient's intraoral hard tissue;

[0055] A2: The three-dimensional digital image data of the patient's intraoral soft tissue obtained by the intraoral scanner and the three-dimensional oral image data of the patient's intraoral hard tissue obtained by the oral CBCT device are imported into the 3D implant guide design device for data overlap to establish an intraoral three-dimensional model, and a one-to-one dental mold Y of the patient is made using 3D printing technology based on the intraoral three-dimensional model.

[0056] Preferably, the soft tissue represents the structural data of gums, and the hard tissue represents the structural data of jaw bones.

[0057] The 3D implant guide design device is a software that can simulate the implantation of implants on the three-dimensional model of the patient's mouth within the software, thus completing the planning of the surgical plan and completing virtual dental implants.

[0058] Furthermore, step B specifically includes:

[0059] B1: Implant planning based on the intraoral 3D model;

[0060] That is, in step B1, implant planning is performed on the site where dental implants are required, and the implant surgery plan is planned so as to proceed to the next step.

[0061] B2: According to the implantation plan, further obtain the implantation information, and then convert the information of the holes to be drilled on the dental model Y.

[0062] Preferably, the implantation information of the implant in step B2 includes: implantation quantity, implantation position, implantation direction, and implantation depth.

[0063] Preferably, the drilling information in step B2 includes: the number of holes drilled, the drilling positions, the drilling directions, and the drilling depths.

[0064] Furthermore, step B2 specifically includes the following steps:

[0065] B21: Determine the direction and position of the tooth fixing block 5 on the dental model Y: According to the implantation plan, first determine the implantation information of the implant in the dental model Y, that is, determine the planned drilling depth C of the implant in the bone in the dental model Y, and determine the relative position information of the tooth fixing block 5 on the dental model Y through the following relationship;

[0066] Drill blade length L = planned bone drilling depth C + gum height B + tooth fixing block 5 height A;

[0067] Specifically, the drill bit blade length L and the height A of the tooth fixing block 5 are both fixed values. According to the implantation plan, the planned drilling depth C in the bone is also a fixed value, so the gum height B can be calculated, that is, the relative position information of the tooth fixing block 5 on the dental model Y is determined, that is, the height position of the tooth fixing block 5 from the dental model Y, and the axial position of the tooth fixing block 5 is consistent with the axial position of the implant.

[0068] Preferably, the relative position information of the tooth fixing block 5 in the patient's dental model Y includes: the number of the tooth fixing blocks 5 , the position of the tooth fixing blocks 5 , the direction of the tooth fixing blocks 5 , and the depth of the tooth fixing blocks 5 .

[0069] B22: Calculate the required drilling depth C' on the dental model Y: Determine the relative position information of the dental fixing block 5 on the dental model Y according to step B21, and determine the required drilling depth C' on the dental model Y by the following relationship;

[0070] The length L' of the tooth root fixing pin 1 = the required drilling depth C' on the dental model Y + the gum height B + the height A of the tooth fixing block 5;

[0071] Specifically, since the length L' of the tooth root fixing pin 1 and the height A of the tooth fixing block 5 are both fixed values, the gum height B can be obtained by step B21, so the drilling depth reserved for the tooth root fixing pin 1 can be calculated, that is, the drilling depth C' required on the dental mold Y can be calculated so that the tooth root fixing pin 1 can be inserted into the dental mold Y, thereby fixing the position of the tooth fixing block 5 relative to the dental mold Y.

[0072] In step C, the required drilling depth C' on the dental model Y is obtained and then converted into a code recognized by the CNC machine tool, and then input into the CNC machine tool, and the dental model Y is sent to the CNC machine tool to perform drilling processing on the part where the patient needs dental implants.

[0073] Among them, the factors that affect the drilling accuracy are: 1. The assembly accuracy when the dental mold Y is fixed to the CNC machine tool; 2. The accuracy of the CNC machine tool drilling process itself.

[0074] Then after step E, the dental membrane pressed on the dental mold Y is wrapped around the outside of the dental mold Y. At this time, the tooth fixing block 5 is also wrapped in the dental membrane. Then step F is performed to remove the dental membrane covering the dental mold Y, and a 3D implant guide with a tooth fixing block 5 is obtained.

[0075] The tooth fixing block assembly provided by the present invention is described in further detail below.

[0076] The two side surfaces of the tooth fixing block 5 are vertical planes. A circular through hole 10 is opened on the top of the tooth fixing block 5. The fixing cylinder 4 is located inside the circular through hole 10. Both end surfaces of the tooth fixing block 5 are provided with a plurality of clamping strips 12.

[0077] Furthermore, a tooth fixing nail 6 is installed above the tooth fixing block 5. The tooth fixing nail 6 consists of a top plate 7 and a threaded column 8. The threaded column 8 is fixed below the top plate 7, and the threaded column 8 is threadedly connected to the threaded hole 11. The root column 2, the platform part 3, the fixing cylinder 4, the tooth fixing block 5, the top plate 7 and the threaded column 8 are all made of titanium alloy. A rotation auxiliary groove 9 is provided on the upper surface of the top plate 7. The shape of the rotation auxiliary groove 9 is a straight line. The setting of the rotation auxiliary groove 9 makes it easier to fix the teeth on the root fixing nail 1, and the fixation is tighter, which can prevent the implant from loosening or even falling off during use.

[0078] The specific implementation methods of the present invention are described in detail above. For those skilled in the art, the present invention may be modified and improved in a number of ways without departing from the principles of the present invention. These modifications and improvements also fall within the scope of protection of the claims of the present invention.

Claims

1. A digital 3D implant guide, characterized by: include: Dental model: The dental model is made one-to-one according to the patient's oral data information; Hole position: The dental model includes a hole position, which is the position where the patient needs to implant the tooth. The hole position is drilled on the dental model by a drill bit of a CNC machine tool; A tooth fixing block assembly, the tooth fixing block assembly comprises a tooth fixing block, the tooth fixing block is pre-placed in the hole, and the tooth fixing block is fixedly connected to the tooth mold; The dental mold includes a dental mold sheet outside, so that the tooth fixing block is fixed on the dental mold sheet; The tooth fixing block assembly comprises a tooth root fixing nail, a tooth fixing block and a tooth fixing nail, and the tooth fixing block is fixed on the tooth mold through the tooth root fixing nail and the tooth fixing nail; The required drilling depth C' on the dental model is: The length of the root fixing pin L'=the required drilling depth C' on the dental model + the gum height B + the tooth fixing block height A.

2. A digital 3D implant guide according to claim 1, characterized in that: The dental model is made one-to-one for the patient by using 3D printing technology.

3. The digital 3D implant guide according to claim 1, characterized in that: The relative position of the tooth fixing block on the dental model is: The length of the drill bit blade L = the planned drilling depth C in the bone + the gum height B + the tooth fixing block height A.

4. The digital 3D implant guide according to claim 1, characterized in that: The root fixing nail includes a root column, a platform portion, and a fixed cylinder. The platform portion is fixedly arranged at one end of the root column, and the platform portion and the root column are in a "T" shape. The fixed cylinder is fixedly arranged at the platform portion, and the shape of the fixed cylinder is circular.

5. The digital 3D implant guide according to claim 4, characterized in that: The two side surfaces of the tooth fixing block are vertical planes, and a hollow circular through hole is provided in the middle of the tooth fixing block. The outer diameter of the fixed cylinder is smaller than the inner diameter of the circular through hole. The tooth fixing block can be sleeved on the outer side of the fixed cylinder through the circular through hole, and the platform portion limits the tooth fixing block so that the tooth fixing block is located above the platform portion.

6. The digital 3D implant guide according to claim 5, characterized in that: The fixing cylinder includes a threaded hole, which is arranged in the middle of the fixing cylinder and has an internal thread. The tooth fixing nail has an external thread. The two cooperate with each other to fix the tooth fixing block to the fixing cylinder, and then fix the tooth fixing block to the root fixing nail.

7. The digital 3D implant guide according to claim 6, characterized in that: The tooth fixing nail consists of a top plate and a threaded column, the threaded column is fixed below the top plate, and the threaded column is threadedly connected to the threaded hole.

8. The digital 3D implant guide according to claim 7, characterized in that: The materials of the root post, the platform part, the fixing cylinder, the tooth fixing block, the top plate and the threaded post are all titanium-containing alloy.

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