TWI679970B - Dental implant positioning and guiding assembly - Google Patents

Abstract

A dental implant positioning and guiding component includes: a positioning rod, a convex positioning element, a concave engaging element, a connecting element and a plurality of guiding elements. The positioning rod is used for inserting a drilled hole in an oral model of a patient. The raised positioning element is provided with a perforation corresponding to the positioning rod for covering the positioning rod. The female recessed engaging element is positionably assembled to the convex positioning element. The connecting element is fixedly connected to one side of the recessed engaging element, and has an oral contact surface that matches an oral contour of the patient, and is used for engaging the oral contour. Any one of the guiding elements is positionably assembled to the recessed engaging element, and the guiding element is provided with a gap, and a curved guiding surface is formed at the gap to guide the operator to drill a Dental implant hole.

Description

   Dental implant positioning guide assembly

The invention relates to a positioning guide assembly, in particular to a dental implant positioning guide assembly.

Dental implant surgery is a method of restoring missing teeth that supports and retains the upper half of the implant based on the lower half of the implant implanted in bone tissue. As the function, structure, and aesthetic effect of implants based on dental implant technology are very similar to natural teeth, dental implant surgery has become the preferred repair method for more and more patients with missing teeth. Before the implant is implanted, the dentist needs to drill an alveolar bone into the alveolar bone to receive the implant. Dentists need to use reaming drills from small to large to prepare the implant hole slowly. A slight deviation will lead to the failure of the implant surgery and the expected restoration effect will not be achieved. Implant holes with the wrong position, angle, and depth will harm potential danger areas such as adjacent teeth, nerves, and maxillary sinus. It will also increase bone resorption around the implant, disappearance of the gingival nipples, atrophy of the mucosa around the implant, and failed implant surgery Chance.

The traditional method of dental implant surgery is to analyze and formulate a plan through the bone relationship around the dental implant area displayed by the oral X-ray film. The dentist can only indirectly estimate the three-dimensional anatomical structure relationship through the two-dimensional image. In actual clinical surgery, All operations can only be performed by the dentist's experience, and the original plan may not be accurately implemented. Although digitalized dental implant guide technology also appears, that is, the use of a computer for morphological observation, measurement, and consideration of post-prosthesis, and other factors are comprehensively considered to generate a three-dimensional guide plate model file for full-scan 3D printing , But the design, print production cycle is long, single missing teeth and multiple missing teeth need to print a full-scan scan guide, expensive and long waiting time, etc., resulting in patients often unacceptable, used in clinical promotion There is a certain degree of difficulty. Due to the long design software training cycle and high requirements for the hardware equipment of dental medical institutions, it needs to be sent to an external processing unit for manufacturing and production, which cannot be performed directly in a dentist clinic. Therefore, during clinical use, the dentist needs to modify and adjust It is extremely inconvenient to communicate the plan with external processing units.

In addition, the mouth opening of Chinese people is generally small. The digital 3D printing guides using the full-mouth scanning described above have the problem of small operating space in the patient's mouth, especially the posterior teeth area is difficult to implant, which has increased significantly. Difficulty of dental implant surgery. According to the existing literature in the field of dental implant surgery, the ideal implant implantation position (implant hole position) is located at least 2 mm from the buccal side and 1 to 3 mm from the top of the Cemento-enamel junction (CEJ). Adjacent teeth are at least 1.5 to 2 millimeters, and the three-dimensional implant hole positions (bucco-lingual, near-distal, and apical coronal) are critical to the success and aesthetics of implant implants.

Moreover, in the prior art, the full-scan scan guide includes a guide hole for guiding the dentist, which needs to be completed during 3D printing. Therefore, different guides will be customized according to the needs of each patient. The printed guide holes cannot be replaced, so it is not possible to mass-produce universal specifications, causing inconvenience to the dentist. Also because of the custom relationship, there will be problems of excessive cost.

To sum up, the problems of the prior art are: the current implantation surgery has the problem of low implantation accuracy and it is difficult to complete the production by the dental chair quickly, and the full-scan digital 3D printing guide has a single problem. Missing teeth and missing teeth need to print full guides, unable to mass-produce common specifications, high cost, and long waiting times.

Considering that in the prior art, dental implantation has a low implantation accuracy and cannot be completed by the dental chair quickly, and a full-scan digital 3D printing guide has a single missing tooth and multiple teeth. All missing teeth need to be printed with full guides, need to be customized, cannot be manufactured in large quantities, and have high cost and long waiting times. A main object of the present invention is to provide a dental implant positioning guide assembly.

In order to solve the problems of the prior art, the present invention adopts a necessary technical means to provide a dental implant positioning guide assembly, which is used for a surgical performer to drill at least one alveolar bone in one patient's oral cavity. The dental implant hole includes a positioning rod, a convex positioning element, a concave engaging element, a connecting element and a plurality of guiding elements.

The positioning rod is used for inserting a drilled hole in an oral model of the patient. The raised positioning element is provided with a perforation corresponding to the positioning rod for covering the positioning rod. The female recessed engaging element is relocatably assembled to the convex positioning element. The connecting element is fixedly connected to one side of the concave engaging element, and has an oral contact surface that matches the oral contour of one of the patients for engaging the oral contour. Any one of the guiding elements is positionably assembled to the recessed engaging element, and each guiding element is provided with a gap, and a curved guiding surface is formed at the gap for the operator to receive the curved shape. At least one dental implant hole is drilled guided by the guide surface.

Among them, after the concave engaging element is relocatably assembled to the convex positioning element, the operator performs the fixing of the connecting element to the concave engaging element, and replaces the convex positioning element and the positioning rod with the guiding element. One of them finally puts one of the connecting element, the concave engaging element and the guiding element into the patient's oral cavity, and engages the contour of the oral cavity with the connecting element to guide the drilling of at least one dental implant hole.

Based on the above-mentioned necessary technical means, a subsidiary technical means derived from the present invention is a positioning rod in a dental implant positioning guide assembly, which has an upper half and a lower half, and the upper half is a trapezoidal cylinder. The lower half is a cylinder, the upper half is thicker than the lower half, the upper half is a trapezoidal cylinder that is thinner and thicker, and the cross section of the upper half is circular and the longitudinal section is trapezoidal.

Based on the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is a convex positioning element in a dental implant positioning guide assembly, each of which has an engaging groove on both sides.

Based on the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is to make the recessed engaging element in the dental implant positioning guide assembly, which has two engaging projections on one side of the connecting element. The two engaging projections are used to fix the engaging grooves of the convex positioning element.

Based on the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is that the two sides of the guiding element in the dental implant positioning guide assembly each have an assembling groove, and the assembling groove is used for It can be assembled to the two engaging projections of the concave engaging element by positioning.

Based on the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is that the guiding elements in the dental implant positioning and guiding assembly are four above-mentioned guiding elements, and the four above-mentioned guidings The curvature radius of the curved guide surface of the component is 2.2 mm, 2.8 mm, 3.5 mm, and 4.2 mm, respectively.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is to make the connecting element in the dental implant positioning guide assembly, which is composed of a light-curing material, and is fixed to the concave by the light-curing method. Snap element.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is to make the connecting element and the concave engaging element in the dental implant positioning guide assembly integrated with each other by using the 3D printing method. forming.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is to make the connecting element in the dental implant positioning and guiding assembly by using the hot-melt method to fix the concave engaging element.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is to make the connecting element in the dental implant positioning and guiding component be an engaging concave engaging element.

Based on the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is the positioning rod, convex positioning element, concave engaging element, connecting element and guiding element in the dental implant positioning guide assembly. All are made using 3D printing.

Based on the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is the positioning rod, convex positioning element, concave engaging element, connecting element and guiding element in the dental implant positioning guide assembly. All are made by pottery casting.

As mentioned above, the dental implant positioning and guiding assembly provided by the present invention can provide the dentist with complete pre-operative information, including bucco-lingual, near and telecentric, direction and angle, etc. Completed the design and production of the solution for dental implant guide plate. The dentist obtains the optimal implant hole position to reduce the possibility of future dental implant complications, which greatly improves the flexibility and cost-effectiveness of clinical practice. At the same time, a clear principle and specification of the implant hole positioning point was formulated to finally obtain the ideal implant hole position and implant angle, thereby reducing the surgical trauma, shortening the operation time and the clinical implant failure rate and the probability of implant complications.

The dental implant positioning guide assembly provided by the present invention has a striking positioning, easy discrimination, and more accurate positioning. The three interconnected components are very easy to insert and remove, and can flexibly adjust the position and angle. The design of the guide element conforms to the radius of the dental implant with a guiding function, and allows the dental implant to be placed from the side. Therefore, the patient's mouth does not need to be greatly opened, which can ease the patient's need to open the mouth in the prior art. Zhang is very uncomfortable. The guiding element accurately determines the implantation position (implant hole) of the implant, and also simplifies the original complex implant guide plate manufacturing process, improves work efficiency, and allows the implantation position to be fixed, fixed and fixed. Orientation improves the success rate of dental implant surgery, and also greatly saves the time for the dentist to perform the operation.

The female recessed engaging element, the convex positioning element, and the positioning rod are connected one by one in a positionable manner, and the female recessed engaging element is also in a positionable group with the guide element, and is easy to disassemble, which can be freely in the patient's mouth Remove the components. Guide elements with different curvature radii of the guide surface and the recessed engaging elements can be selectively and positionably assembled without the need to repeatedly remove the dental implant guide from the patient's mouth. It is very convenient to replace the guide element. Compared with the dental chair implant guide plate in the prior art, it is fixed. It is necessary to repeatedly remove the implant guide plate from the patient's mouth and remove the semicircular disc inside the snap ring. By changing the radius of the snap ring, the present invention can save operation time and is more convenient for dentists to operate.

100‧‧‧ Dental implant positioning guide assembly

1‧‧‧ positioning stick

11‧‧‧ first half

12‧‧‧ lower half

2‧‧‧ raised positioning element

21‧‧‧perforation

22‧‧‧ snap groove

23‧‧‧ snap link arm

3‧‧‧ recessed engaging element

31‧‧‧ Engagement bump

4, 4a‧‧‧link components

5, 5a, 5b, 5c‧‧‧‧Guide elements

51‧‧‧curved guide surface

52‧‧‧Assemble the groove

53‧‧‧Assemble the connecting arm

6‧‧‧ oral model

6a‧‧‧ Oral

61, 61a ‧ ‧ alveolar bone

611‧‧‧ drilling

62, 62a‧‧‧ Tooth

7‧‧‧ Dental Liquid Glue

C1‧‧‧ counterclockwise

C2‧‧‧ clockwise

D1, D2‧‧‧ reference distance

G‧‧‧ gap

NA, NAa ‧ ‧ ‧ missing tooth area

R‧‧‧curvature diameter

X1, X2, X3, X4,

X5, X6‧‧‧ reference axis

The first diagram is a three-dimensional schematic diagram of a dental implant positioning guide assembly provided by a preferred embodiment of the present invention; the second diagram is a positioning rod and a dental implant positioning guide assembly provided by a preferred embodiment of the present invention. Assembly diagram of the convex positioning element; the third diagram is a cross-sectional view taken along the line AA of the second diagram; the fourth diagram is the convex positioning element and guide of the dental implant positioning guide assembly provided by the preferred embodiment of the present invention Top views of the components; and Figures 5 to F are diagrams showing the state of use of the preferred embodiment of the present invention.

Please refer to the first diagram to the third diagram, wherein the first diagram is a three-dimensional schematic diagram showing a dental implant positioning guide assembly provided by the preferred embodiment of the present invention; the second diagram is a diagram provided by the preferred embodiment of the present invention Assembly diagram of the positioning rod and the raised positioning element of the dental implant positioning guide assembly; and the third figure is a sectional view taken along the line AA of the second figure. As shown in the figure, a dental implant positioning and guiding assembly 100 includes a positioning rod 1, a convex positioning element 2, a concave engaging element 3, a connecting element 4 and four guiding elements 5, 5a, 5b and 5c. In this embodiment, the positioning rod 1, the convex positioning element 2, the female recessed engaging element 3, the guide element 5, 5a, 5b, and 5c are all manufactured by 3D printing, but they are not This is limited, and can also be made by pottery casting.

The positioning rod 1 has an upper half 11 and a lower half 12. The upper half 11 is a trapezoidal cylinder, and the lower half 12 is a cylinder. The upper half 11 is generally thicker than the lower half 12. More precisely, the upper half 11 is a trapezoidal cylinder with a thin upper and lower thickness, and the cross section of the upper half 11 is a circle, and the longitudinal section is a trapezoid. The circle of the cross section is from top to bottom. Get bigger in order.

The protruding positioning element 2 is provided with a perforation 21, and the perforation 21 corresponds to the upper half 11 of the positioning rod 1, so that the protruding positioning element 2 is detachably sleeved on the positioning rod 1. In addition, the convex positioning element 2 is further provided with a plurality of engaging grooves 22 (only one of which is shown in the drawing) for connecting with the concave engaging element 3. In this embodiment, the number of the engaging grooves 22 is two, which are respectively provided on two sides of the protruding positioning element 2. Because the upper half 11 of the positioning rod 1 is a trapezoidal cylinder, the convex positioning element 2 is sleeved behind the positioning rod 1 and can be used by a surgeon (dentist) with a reference axis X1 as the axis and a reverse axis. The clock direction C1 or a clockwise direction C2 rotates, wherein the reference axis X1 extends the line connecting the circle centers of each cross section of the upper half 11, so it can pass through the center position of the upper half 11 and the center of the perforation 21 at the same time. position.

The recessed engaging element 3 is provided with two engaging projections 31 (only one of which is shown in the drawing), and can be assembled to the engaging groove 22 of the convex positioning element 2 by using the engaging projections 31. Because the engaging protrusion 31 and the engaging groove 22 are closely assembled by concave and convex, the concave concave engaging element 3 can be positionedly assembled to the convex positioning element 2, and the positional relationship between the two will not cause relative movement. Ensure positioning accuracy. The other side of the concave engaging element 3 with respect to the convex positioning element 2 is used to fix the connecting element 4. When the connecting element 4 and the convex positioning element 2 are in a fixed state, the connecting element 4 and the convex positioning element are fixed. 2 The positional relationship between the two will not cause relative movement, which can ensure the accuracy of positioning.

In this embodiment, the connecting element 4 is a photosensitive resin, but it is not limited thereto. The photosensitive resin is composed of a photosensitive prepolymer, a reactive diluent, and a photosensitizer. In general, the photosensitive resin is plastic. When it is irradiated with ultraviolet light (250nm to 380nm) at a specific wavelength, it will cause the polymerization reaction to become a solid and complete curing. In other embodiments, the connection element 4 may not use a photosensitive resin, and the recessed engagement element 3 may be fixed by a hot-melt method, or the recessed engagement element 3 may be fixed by an assembly method. More preferably, the connecting element 4 and the concave engaging element 3 are integrally formed with each other by a 3D printing method.

The difference between the guide elements 5, 5a, 5b, and 5c is the difference in the radius of curvature. The following uses guide element 5 as an example: The guide element 5 is provided with a gap G (labeled in the fourth figure), and is formed at the gap G A curved guide surface 51 is provided with an assembly groove 52 (only one of which is shown in the drawing) on both sides. The curved guide surface 51 has a curvature diameter R and a curvature radius of 2.2 mm. The radius of curvature R is half, and the radius of curvature is consistent with the radius of curvature of the drill bit of at least one dental implant. Therefore, the surgeon can abut the dental implant against the curved guide surface 51 and use the curved guide surface 51 The guide drill sets a dental implant hole, and the purpose of assembling the groove 52 is to guide the element 5 to replace the convex positioning element 2 and to be positionably assembled to the concave engaging element 3 during the actual operation of the surgery.

Similarly, the remaining guide elements 5a, 5b, and 5c each have a curvature diameter and a curved guide surface, and each side is provided with an assembly groove. It needs to be explained that the curvature radius of the guide element 5a It is 2.8 mm, the radius of curvature of the guide element 5b is 3.5 mm, and the radius of curvature of the guide element 5c is 4.2 mm. But not limited to this, the operator or manufacturer of the surgery can modify it based on the patient's statistics to see if there are other specifications that are more suitable.

Please refer to the fourth figure. The fourth figure is a top view showing the convex positioning element and the guiding element of the dental implant positioning guide assembly provided by the preferred embodiment of the present invention. As shown in the figure, the protruding positioning element 2 has a perforation 21, two engaging grooves 22, and a reference distance D1, and the guide element 5 has a notch G, a curved guide surface 51, two assembly grooves 52, and a reference distance. D2.

The reference axis X1 passes through the center position of the perforation 21 and defines a reference axis X2 and a reference axis X3 respectively passing through the centers of the two engaging grooves 22. The reference axes X1, X2, and X3 are parallel to each other, and the reference distance D1 is The distance from the reference axis X1 to the line connecting the circle centers of the two engaging grooves 22. The same applies; the reference axis X4 passes through the center of curvature of the curved guide surface 51, and defines a reference axis X5 and a reference axis X6 respectively through the centers of the two assembling grooves 52. The reference axes X4, X5, and X6 are parallel to each other , And the reference distance D2 is the distance from the reference axis X4 to the circle center line of the two assembly grooves 22. The reference distance D1 is equal to the reference distance D2. The guide elements 5a, 5b, and 5c also have a reference distance equal to the above-mentioned reference distances D1 and D2, respectively.

In addition, the protruding positioning element 2 further has an engaging connecting arm 23, and the guiding element 5 further has an assembling connecting arm 53. The engaging connecting arm 23 refers to a part where the reference axis X2 and X3 are above the line, and the assembled connecting arm 53 refers to a part where the reference axis X5 and X6 are above the line. The advantage of the engaging link arm 23 is that when the surgical performer attaches or detaches the convex positioning element 2 to the concave engaging element 3, the surgical performer's hand holds the convex positioning element 2 The position where the position is connected to the convex positioning element 2 and the concave engaging element 3 (that is, where the engaging groove 22 and the engaging projection 31 are connected) will form a force arm. The position of the convex positioning element 2 is held by a hand, and the fulcrum is the junction of the convex positioning element 2 and the concave engaging element 3. A moment is generated by the force exerted by the surgical performer, which makes the surgical performer more easily connect the convex positioning element 2 to the concave engaging element 3 or from the inside than the case without the engaging connecting arm 23. The concave engaging element 3 is disassembled. In the same way, assembling the connecting arm 53 can also make it easier for the operator to assemble the guide element 5 to the recessed engagement element 3 or disassemble the guide element 5 from the recessed engagement element 3.

Please refer to the first diagram, the fifth diagram to the fifth diagram F, and the fifth diagram to the fifth diagram F are diagrams showing the use state of the preferred embodiment of the present invention. As shown in the figure, a panoramic view of the oral cavity and a periapical film of a patient are pre-photographed, and an oral model 6 of one of the patients is made. The oral model 6 includes an alveolar bone 61 and a plurality of teeth 62 (the diagram is only One of them is marked), and has a missing tooth area NA, and a surgical performer drills a hole 611 in the missing tooth area NA in advance. In this embodiment, the missing tooth area NA system lacks one tooth 62, so only one drill hole 611 needs to be drilled. If the missing tooth area NA system lacks a plurality of teeth 62, a corresponding plurality of drill holes 611 need to be drilled. The drilling hole 611 is based on the rule of at least 2 mm from the buccal side, 1 to 3 mm from the top of the neck of the tooth (CEJ), and at least 1.5 to 2 mm from the adjacent tooth. The optimal position is determined and marked on the oral cavity model 6. The appropriate implant design position is at least 2 mm in the buccal bone, at least 1.5 to 2 mm from the adjacent tooth (3 mm from the adjacent implant). In addition, the hole size of the drill hole 611 refers to the hole size of the lower half 12 of the positioning rod 1. In this embodiment, the operator performs a drill hole 611 using a No. 8 circular drill.

Next, the surgeon inserts the lower half 12 of the positioning rod 1 into the bore 611, and checks the position and angle of the positioning rod 1 according to the patient's oral panoramic film and apical film. A cutting tool is used to open a low-concave space around the positioning rod 1 to prevent a dental fluid glue 7 from overflowing, and the positioning rod 1 is taken out, and a small amount of the dental fluid glue 7 is injected into the drilling 611, and then the positioning rod 1 1 Insert the drilled hole 611 and fix the positioning rod 1 with the dental liquid glue 7.

After the positioning rod 1 is fixed, the surgeon sets the protruding positioning element 2 on the positioning rod 1 because the protruding positioning element 2 is rotatably mounted on the positioning rod 1 (as shown in the second figure). Therefore, the operator can rotate to the most suitable angle according to the position of the missing tooth area NA to improve the convenience of the operator. For example, if the missing tooth area NA is at the incisor, the convex positioning element 2 is directly opposite If the operative area NA is at the posterior teeth, the operator can rotate the angle to an angle suitable for the operative person to drill a dental implant hole.

Next, the surgical performer can assemble the engaging projection 31 of the concave engaging element 3 to the engaging groove 22 of the convex positioning element 2 and fix the connecting element 4 to the concave engaging element. 3 is opposite the convex positioning element 2 on the other side. Since the female recessed engaging element 3 is relocatably assembled to the convex positioning element 2, there is no relative movement between the female recessed engaging element 3 and the convex positioning element 2 after assembly, and the connecting element 4 is It is fixedly connected to the recessed engagement element 3, so that there is no relative movement between the connection element 4 and the recessed engagement element 3. The connecting element 4 has an oral contact surface, which conforms to the oral contour of one of the patients. The oral contour indicates at least one of the teeth 62 (tooth profile), the alveolar bone 61, the hard jaw profile, and the gum profile. Or a combination thereof, which can be fixed to at least one of the actual teeth 62a, alveolar bone 61a, hard jaw, and gums of the patient when placed in the oral cavity 6a of one of the patients, and all of the above characteristics can improve the implantation Precision of the perforations. In addition, the oral contact surface is the side that is in contact with the patient's oral contour, so the drawing cannot be marked.

In this embodiment, the connecting element 4 is fixedly connected to the concave engaging element 3 and covers a plurality of teeth 62 and a portion of the alveolar bone 61, and then is irradiated with light of a specific wavelength to achieve a curing effect and solidify into a connection. Element 4a.

Finally, the surgeon removes the connecting element 4a, the concave engaging element 3, the convex positioning element 2 and the positioning rod 1 from the oral cavity model 6, and self-guides the elements 5, 5a, 5b, and 5c according to the needs of the patient. Pick one that can be positioned to be assembled into the recessed engaging element 3, and then put into the patient's mouth 6a to drill the implant hole, because the reference distance of the guide element and the reference distance of the convex positioning element 2 D1 (labeled in the fourth figure) is equal. Therefore, the curved guiding surface of the guiding element guides the position of the oral cavity 6a drilled by the surgical performer corresponding to the position of the positioning rod 1 inserted in the bore 611 of the oral cavity model 6. Position, to improve the accuracy of drilling dental implants. In this embodiment, the operator performs a selection of a guiding element 5b, the guiding element 5b is used to drill a molar implant hole, and the guiding element 5 is applicable to the lower incisors, the lateral incisors, and the guiding elements 5a. It is suitable for upper incisors, canines and median incisors, and the guide element 5c is suitable for molars.

Preferably, the surgeon can drill the implant hole from small to large using step-by-step drilling. If it is necessary to use the guide element 5b to drill the implant hole, the dentist will first use the guide element 5 to drill. A dental implant hole is then used to guide the newly-implanted dental implant hole to a larger size, similar to the concept of reaming. Finally, the guiding element 5b is used to drill a dental implant hole that ultimately meets the needs of the patient. Similarly, if the guide element 5a is needed, the guide element 5 needs to be used before the guide element 5a is used; if the guide element 5c is used, the guide element 5 and the guide element 5a need to be used in order. With the guide element 5b, finally, the guide element 5c is used. Step-by-step drilling can avoid direct drilling of holes with a large radius, which can cause errors due to large vibrations, and can further improve the accuracy of dental implant holes.

It should be noted that the oral cavity model 6 is made according to the oral cavity 6a. Therefore, the alveolar bone 61 of the oral cavity model 6 corresponds to one alveolar bone 61a of the actual oral cavity 6a, and the plural teeth 62 of the oral cavity model 6 correspond to the actual oral cavity. The plurality of teeth 62a of 6a, and the missing tooth area NA of the oral cavity model 6 corresponds to the missing tooth area NAa of the actual oral cavity 6a. Therefore, the connecting element 4a having an oral contact surface that conforms to the oral contour of the oral model 6 can be accurately engaged with the teeth 62a and the alveolar bone 61a in the oral cavity 6a after being placed in the oral cavity 6a of the patient without Relative movement results in inaccurate positioning.

This preferred embodiment takes a single missing tooth as an example, but it is not limited thereto. The dental implant positioning guide assembly 100 provided by the present invention can also be used for dental implant surgery with multiple missing teeth.

In summary, the dental implant positioning and guide assembly provided by the present invention is more convenient and accurate in positioning. The three components that can be positioned and assembled with each other are very convenient to insert and remove, and can flexibly adjust the position and angle. . The design of the guide element not only conforms to the radius of the implant drill, but also has a guide function, and allows the implant drill to be inserted into the set value hole from the side, so that the patient does not need to open the mouth very much, which can relieve the patient's discomfort . The guiding element accurately determines the implantation position (implant hole) of the implant, and also simplifies the original complex implant guide plate manufacturing process, improves work efficiency, and allows the implantation position to be fixed, fixed and fixed. Orientation improves the success rate of dental implant surgery, and also greatly saves the time for the dentist to perform the operation.

Compared with the digital dental implant guide plate, the present invention uses a computer to perform morphological observation and measurement of the patella with a computer, and comprehensively considers many factors such as post-repair, and determines the implant hole. Position, further generate a 3D guide plate model file for 3D printing of a full mouth scan, resulting in single missing teeth and multiple missing teeth need to print full auxiliary guides, unable to mass-produce universal specifications, high cost and waiting time It's too long.

Compared with the prior art, the structure of the guide plate retaining ring of the guide plate is a whole circle. During the operation of the dentist, the scale of the dental implant will be blocked by the guide plate retaining ring, so the dentist cannot accurately Control the depth of dental implant drilling; In the dental implant positioning and guiding assembly provided by the present invention, the guiding element is provided with a gap, and the guiding element structure is semi-circular or slightly longer at both ends, similar to a horseshoe. This type of structure not only achieves the guiding function, but also allows the surgeon (that is, the dentist) to clearly see the scale of the dental implant drill, to achieve a precise and deep effect. Another effect is that drilling can be performed without having the patient's mouth wide open, which can greatly relieve the discomfort of patients who need to open their mouth very large in the prior art.

Compared with the prior art, the guide plate also has a problem of complicated processes. Each time a dentist replaces an implant drill with a different diameter, a guide plate for a hole that matches the diameter of the implant drill is also replaced. In other words, each patient needs to make at least four guide plates, and it needs to be put in, taken out, and replaced many times during the dental implant operation. In the dental implant positioning guide assembly provided by the present invention, a plurality of guide elements with different curvature radii are positionably assembled on the recessed engagement element, and the assembly or disassembly is quite convenient, and each patient only A guide plate needs to be made (the connecting element is fixed to the recessed engaging element), and during the dental implantation procedure, the surgeon (dentist) only needs to replace the guide element, and it does not need to be placed multiple times. Removal and replacement also make it cheaper, more efficient, and simpler.

With the above detailed description of the preferred embodiments, it is hoped that the features and spirit of the present invention can be more clearly described, and the scope of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, the intention is to cover various changes and equivalent arrangements within the scope of the patents to be applied for in the present invention.

Claims (8)

A dental implant positioning guide assembly is used for a surgical performer to drill at least one dental implant hole in an alveolar bone in one patient's oral cavity, and includes: a positioning rod for inserting in a A drilled hole in an oral model of the patient has an upper half and a lower half, the upper half is a trapezoidal cylinder, the lower half is a cylinder, and the upper half is smaller than the The lower half is thick, the upper half is a trapezoidal cylinder with a thin upper and lower thickness, and the cross section of the upper half is a circle and the longitudinal section is a trapezoid; a convex positioning element is provided with a pair of corresponding positioning The perforation of the rod is used to be sleeved on the positioning rod, and each side of the protruding positioning element has an engaging groove; an inward recessed engaging element is relocatably assembled to the protruding positioning element, And has two engaging projections, and the two engaging projections are respectively fixed to the engaging grooves on both sides of the convex positioning element; a connecting element is fixedly connected to the concave engaging element One side, and has an oral contact surface that conforms to one of the patient's oral contours for engaging the oral wheel ; And a plurality of guiding elements, any one of the guiding elements is positionably assembled to the recessed engaging element, and each of the guiding elements is provided with a gap, and a gap is formed at the gap. A curved guide surface for the operator to drill the at least one dental implant hole guided by the curved guide surface, and two sides of each of the guide elements have an assembly groove, and The assembly grooves are configured to be positionably assembled to the two engaging projections of the recessed engaging element; wherein after the recessed engaging element is positionably assembled to the raised positioning element, The operator of the operation is to fix the connecting element to the concave engaging element, replace the convex positioning element and the positioning rod with one of the guiding elements, and finally the connecting element and the concave The engaging element and one of the guiding elements are put into the oral cavity of the patient, and the mouth contour is engaged by the connecting element to guide and drill the at least one dental implant hole; wherein, the two cards The convex block is located at one end of the concave engaging element opposite to the connecting element. The dental implant positioning and guiding assembly according to item 1 of the scope of the patent application, wherein the guiding elements are the four guiding elements described above, and the curved guiding surfaces of the four guiding elements are The radii of curvature are 2.2 mm, 2.8 mm, 3.5 mm and 4.2 mm. The dental implant positioning and guiding component according to item 1 of the scope of patent application, wherein the connecting element is composed of a light-curing material, and the concave engaging element is fixed by a light-curing method. The dental implant positioning and guiding component according to item 1 of the scope of patent application, wherein the connecting element and the concave engaging element are integrally formed with each other by a 3D printing method. The dental implant positioning and guiding component according to item 1 of the patent application scope, wherein the connecting element is fixedly connected to the concave engaging element by a hot-melt method. The dental implant positioning and guiding component according to item 1 of the patent application scope, wherein the connecting element is engaged with the concave engaging element. The dental implant positioning and guiding assembly according to item 1 of the scope of the patent application, wherein the positioning rod, the convex positioning element, the concave engaging element, the connecting element and the guiding elements are in a 3D row. Printed. The dental implant positioning and guiding assembly according to item 1 of the scope of patent application, wherein the positioning rod, the convex positioning element, the concave engaging element, the connecting element and the guiding elements are made of ceramic mold. Foundry.