CN114288041B - A personalized obturator for root canal barrier surgery and its manufacturing method and application - Google Patents

Abstract

The invention discloses a personalized obturator for root canal barrier surgery and its manufacturing method and application, which solves the technical problems of non-compact root canal filling, serious overfilling and underfilling phenomena in root canal barrier surgery in the prior art. The personalized obturator includes a handle and a pressurized filling rod; the pressurized filling rod includes a connecting portion, a neck, a working end and a first annular scale line. The manufacturing method is to obtain the DICOM data of the affected teeth and convert them into 3D data format. After determining the root length of the affected teeth on the 3D software, a personalized obturator for root canal barrier surgery is designed and printed by a 3D printer. It is used in the root canal barrier operation of pulp disease and periapical disease treatment. The present invention is located in the affected tooth during the root canal barrier operation, so that the scale line of the connecting part can accurately indicate the position that the pressurized filling should reach during the operation, and the root canal barrier operation is performed within the appropriate root length range. In this way, the reliability of the operation can be improved, the treatment time can be shortened, the filling density can be improved, overfilling and underfilling can be reduced, and the treatment effect can be improved.

Description

A personalized obturator for root canal barrier surgery and its manufacturing method and application

technical field

The invention belongs to the technical field of medical equipment, and in particular relates to a personalized obturator for root canal barrier surgery and its manufacturing method and application.

Background technique

Clinically, it is common to have teeth with thick root canals, unclosed apical foramen or flared apical foramen, and pulpitis and periapical periodontitis require endodontic treatment. Apical barrier surgery or apex induction, revascularization and other techniques are used to seal the root canal. In this type of technique, the quality of the barrier in the lower, middle and upper part of the root canal is crucial. The problems that often occur in the current barrier technology are: filling is not dense and sparse; overfilling, a large amount of material exceeds the target position; underfilling, the material fails to reach the target position. These problems range from causing postoperative reactions and microleakage to causing treatment failure or delayed healing. This series of problems is related to the filling method of the barrier technology. No matter which brand of vertical pressurizer is used in the current clinical operation, the tip diameter is fixed, the selectivity is small, and it cannot fully adapt to the shape of the root canal of this type of affected tooth. It has the disadvantages of low filling efficiency, poor control of filling quality and high technical requirements. At the same time, most of the root canal sealing medicines are injected. Whether it is calcium hydroxide or Vitapex, etc., when sealing the root canal, there is a situation that it is easy to exceed and easy to undershoot, which is similar to the problem of the root canal barrier.

Therefore, designing a personalized obturator for root canal barrier surgery and its manufacturing method and application to at least solve some of the above technical problems has become a technical problem to be solved urgently by those skilled in the art.

Contents of the invention

The technical problem to be solved by the present invention is to provide a personalized obturator for root canal barrier surgery and its manufacturing method and application, so as to solve at least part of the above technical problems.

To achieve the above object, the technical scheme adopted in the present invention is as follows:

A personalized filler for root canal barrier surgery, including a handle, and a pressurized filling rod arranged on the handle for extending into the root canal to pressurize and fill the material in the root canal; the pressurized filling rod includes a The connected connecting part, the neck connected with the connecting part, and the working end provided at the end of the neck for pressurizing and filling the filling material, the connecting part is provided with a first annular scale line, and the first annular scale line is connected The spacing between the handles is 6mm.

Further, the pressurized filling rod is cylindrical. In addition to the cylindrical shape, the pressurized filling rod can also be in the shape of an elliptical cylinder, or various shapes in which the working end matches the shape of the root canal.

Further, the connecting part is provided with a second annular scale line, a third annular scale line, and a fourth annular scale line, and the distance between the second annular scale line and the handle is 5 mm, and the distance between the third annular scale line and the handle is 5 mm. The distance between the scales is 4mm, and the distance between the fourth ring mark and the handle is 3mm.

Further, the annular scale line of the connecting part is in the shape of an annular groove.

Further, the handle, connecting part, neck and working end are integrally formed by 3D printing with resin material or metal material. Further, the handle is provided with threads for enhancing friction.

Further, the handle is provided with marking points pointing to the buccal surface of the affected tooth for guiding the position when in use.

A method for manufacturing a personalized obturator for root canal barrier surgery, comprising the following steps:

Step 1. Obtain the DICOM data of the affected teeth in the patient's oral cavity through intraoperative CBCT scanning and convert them into an editable 3D data format;

Step 2. According to the 3D data format, design a personalized obturator for root canal barrier surgery corresponding to the affected tooth on the 3D software according to the root length of the affected tooth and the position of the barrier, and do the filling on the personalized obturator for root canal barrier surgery. corresponding marks;

Step 3. Print out the designed root canal barrier with a personalized obturator through a 3D laser printer.

Further, in step 1, the 3D data format is in STL format; in step 3, the personalized plugger for root canal barrier technique is printed with resin material or metal material.

An application of a personalized obturator for root canal barrier surgery, the personalized obturator for root canal barrier surgery is used in root canal barrier surgery for pulp disease and periapical disease treatment, including apical barrier surgery and dental Myeloid revascularization. At the same time, this technology can also be applied to the internal sealing of root canals to achieve the purpose of proper sealing.

Compared with the prior art, the present invention has the following beneficial effects:

The present invention is simple in structure, scientific and reasonable in design, and convenient to use. Through the personalized obturator for root canal barrier surgery, it can accurately locate the position where the filling material in the root canal should reach. Through the corresponding marking points, the operator can pressurize in one step, and can Effectively shorten the operation time. At the same time, it can effectively solve the problems of low filling efficiency and poor filling quality control due to the fixed tip diameter, less selectivity, and inability to fully adapt to the root canal shape of the above-mentioned affected teeth like the traditional filling method. The present invention uses a personalized obturator for root canal barrier surgery filling, which can effectively reduce the technical requirements for root canal filling, reduce the phenomenon of non-compact filling, overfilling and underfilling, reduce postoperative complications, and finally improve the quality of patients. tooth retention. Simultaneously, the present invention can also improve the quality of the medicine sealed inside the root canal, and improve the success rate of treating pulp disease and periapical disease.

Description of drawings

Fig. 1 is a schematic structural view of a personalized obturator for root canal barrier surgery according to the present invention.

FIG. 2 is a photo of the clinical application scene of the root canal barrier technique for treating periapical diseased teeth in Example 1. FIG.

Fig. 3 is a schematic structural diagram of a personalized obturator for root canal barrier surgery in Example 2 of the present invention.

Among them, the names corresponding to the reference signs are:

1-working end, 2-neck, 3-joint, 4-handle, 5-the first circular scale line, 6-the second circular scale line, 7-the third circular scale line, 8-the fourth circular scale line , 9-thread, 10-marking point, 11-pressurized filling rod.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1 and 2, a personalized obturator for root canal barrier surgery provided by the present invention has a simple structure, scientific and reasonable design, and is easy to use. Through the personalized obturator for root canal barrier surgery, the root canal can be precisely positioned The location where the filling material should reach, through the corresponding marking points, the operator can pressurize in one step, which can effectively shorten the operation time. At the same time, it can effectively solve the problems of low filling efficiency and poor filling quality control due to the fixed tip diameter, less selectivity, and inability to fully adapt to the root canal shape of the above-mentioned affected teeth like the traditional filling method. The present invention uses a personalized obturator for root canal barrier surgery filling, which can effectively reduce the technical requirements for root canal filling, reduce the phenomenon of non-compact filling, overfilling and underfilling, reduce postoperative complications, and finally improve the quality of patients. tooth retention. The present invention includes a handle 4, and a pressurized filling rod 11 provided on the handle 4 for extending into the root canal to pressurize and fill the filling material in the root canal; the pressurized filling rod 11 includes a connecting part connected with the handle 4 3. The neck 2 connected to the connecting part 3, and the working end 1 provided at the end of the neck 2 for pressurizing and filling the filling material. The connecting part 3 is provided with a first ring scale line 5, and the first ring The distance between the scale mark 5 and the handle 4 is 6mm.

The present invention is used in the root canal barrier operation for the treatment of pulp disease and periapical disease. It is located in the affected tooth, so that the scale line of the connecting part can accurately indicate the position where the pressurized filling should reach during the operation. Perform root canal barrier surgery. In this way, the reliability of the operation can be improved, the treatment time can be shortened, the filling density can be improved, overfilling and underfilling can be reduced, and the treatment effect can be improved.

The connecting portion 3 of the present invention is provided with a second annular scale line 6, a third annular scale line 7, and a fourth annular scale line 8, and the distance between the second annular scale line 6 and the handle 4 is 5mm, and the third annular scale line The distance between the line 7 and the handle is 4mm, and the distance between the fourth circular scale mark 8 and the handle is 3mm. The first circular scale line, the second circular scale line, the third circular scale line, and the fourth circular scale line are designed at the connecting part, and the distances from the handle are 6mm, 5mm, 4mm, and 3mm, respectively. In this solution, you only need to place the scale line of the target position at the highest point of the corresponding affected tooth to pressurize the filling material, so that the filling material can be pressurized tightly in place. The handle 4, connecting part 3, neck 2 and working end 1 of the present invention are integrally formed by 3D printing of resin material or metal material. When such a solution is adopted, the structure of the personalized filler is simpler, the manufacturing process is simplified, the use is convenient, and the overall strength is higher.

The handle 4 of the present invention is provided with a screw thread 9 for enhancing friction. When such a scheme is adopted, the frictional force can be enhanced to simulate the feel of various clinical expansion needles. The handle 4 of the present invention is provided with a marking point 10 pointing to the buccal surface of the affected tooth for guiding in place during use. The marking point points to the buccal surface of the affected tooth to guide it in place, and the marking point is preferably a small sphere protruding from the handle 4 .

The working end of the present invention is the most important pressure surface in the root canal barrier operation. The scale line on the connecting part can position the pressure filling material to the working stop point of the affected tooth at 6mm, 5mm, 4mm, and 3mm, and accurately reach the filling position. The handle There is a marking point on the top, pointing to the buccal surface of the affected tooth, to guide it in place. At the same time, it has a thread structure to enhance friction and improve retention.

A method for manufacturing a personalized obturator for root canal barrier surgery provided by the invention comprises the following steps:

Step 1. Through intraoperative CBCT scanning, the DICOM data of the teeth in the patient's oral cavity are obtained and converted into an editable 3D data format. The 3D data format is preferably STL format.

Step 2. According to the 3D data format, design a personalized obturator for root canal barrier surgery corresponding to the affected tooth on the 3D software according to the root length of the affected tooth and the position of the barrier, and do the filling on the personalized obturator for root canal barrier surgery. corresponding markup.

Step 3. Print out the designed personalized plugger for root canal barrier using resin material through a 3D laser printer.

In the present invention, through the above-mentioned manufacturing method and precise digital modeling, the manufactured personalized filler can achieve higher bonding effect and auxiliary effect.

The present invention provides an application of a personalized plugger for root canal barrier surgery. The personalized plugger for root canal barrier surgery is used in root canal barrier surgery for pulp disease and periapical disease treatment. Precisely locate the position where the filling material should reach the affected tooth, and fill it tightly.

The invention belongs to the technical field of medical equipment, and in particular relates to a personalized obturator for root canal barrier surgery and its manufacturing method and application. It includes a working end, a neck, a connecting part, a handle, a first circular scale line, a second circular scale line, a third circular scale line, a fourth circular scale line, and marking points. The working end extends to the neck, and then extends to the connection part, wherein the connection part has corresponding marks, and the connection part is connected with the handle, and the handle is designed with threads and spherical marking points. The first ring scale line can pressurize the filling material to 6mm from the working stop of the affected tooth, the second ring scale line can pressurize the filling material to 5mm from the working stop of the affected tooth, and the third ring scale line can pressurize the filling material from the working stop of the affected tooth The stop point is 4mm, and the fourth ring scale line can pressurize the filling material to be 3mm from the working stop point. The marking point points toward the buccal surface of the tooth when applied to the tooth. Using this instrument for root canal barrier surgery can make up for the shortcomings of traditional obturators, that is, the diameter of the working end is fixed, and the selection is small, and it cannot completely match the affected teeth with large root canals with immature root tips. The present invention accurately locates the level that the filling material should reach through the personalized filling device, can shorten the operation time, improve the pressurization effect of the root canal barrier operation, reduce the technical sensitivity, improve the density of the filling material, reduce microleakage, reduce Postoperative complications, and ultimately improve the retention rate of affected teeth.

The technology of the present invention will be described in detail below with examples.

Example 1

Aiming at the problems that the existing vertical presser has fixed tip diameter, less selectivity, and cannot fully adapt to the shape of the root canal of the tooth with a thick root canal and unclosed root apex, there are also problems of low filling efficiency, poor control of filling quality, and technical problems. Due to the shortcoming of high requirements, this embodiment is optimized to solve the problems existing in the prior art.

As shown in Figures 1 and 2, this embodiment discloses a personalized obturator for root canal barrier surgery, including a working end 1, a neck 2, a connecting portion 3, and a handle 4, and the working end 1 extends toward the neck 2, The neck 2 extends to the connection part 3, the connection part 3 is connected to the handle 4, and the connection part 3 is provided with a first ring scale line 5, a second ring scale line 6, a third ring scale line 7, and a fourth ring scale line 8 , thread 9 and marking point 10 are set on the handle 4. The personalized plugger for root canal barrier surgery is integrally formed with resin material through 3D printing.

The personalized obturator for root canal barrier surgery of the present invention is used in root canal barrier surgery for the treatment of endodontics and periapical diseases. At the same time, this technology can also be applied to the internal sealing of root canals to achieve the purpose of proper sealing . It is located in the affected tooth, so that the scale line of the connecting part can accurately indicate the position where the pressure filling should reach during the operation, and the root canal barrier operation can be performed within the appropriate root length range. In this way, the reliability of the operation can be improved, the treatment time can be shortened, the filling density can be improved, overfilling and underfilling can be reduced, and the treatment effect can be improved.

The structure of the personalized obturator used in the root canal barrier technique used in the present invention is not uniquely limited. This embodiment is optimized and one of the feasible options is given: the working end, the neck, the connecting part and the handle One piece. When such a solution is adopted, the structure of the personalized filler is simpler, the manufacturing process is simplified, the use is convenient, and the overall strength is higher.

In order to improve the positioning reliability of the personalized filler in the specific use process, this embodiment optimizes and cites the following feasible options: the first circular scale line, the second circular scale line, and the third circular scale line , The fourth circular scale line is designed at the connecting part, and the distance from the handle is 6mm, 5mm, 4mm, 3mm respectively. When such a solution is adopted, it is only necessary to place the scale line of the target position at the highest point of the corresponding affected tooth, and the filling material can be pressurized tightly in place.

As shown in FIG. 2 , the structure of the handle of the present invention can be configured in various forms, and one of the feasible options is optimized here: the handle is a threaded structure. When such a scheme is adopted, the frictional force can be enhanced to simulate the feel of various clinical expansion needles.

Example 2

The content of the above-mentioned embodiment 1 discloses a personalized obturator for root canal barrier surgery, and this embodiment also discloses a method for manufacturing a personalized obturator for root canal barrier surgery, which is now specifically described:

S1: Through CBCT scanning, the DICOM data of the teeth in the patient's mouth are obtained and converted into an editable 3D data format (such as STL format).

S2: According to the 3D data format, design on the 3D software, design a personalized obturator according to the root length of the affected tooth and the position of the barrier, and make corresponding marks on the obturator. Through CBCT scanning, the DICOM data of the teeth in the patient's mouth are obtained and converted into an editable 3D data format (such as STL format).

S3: The overall model of the personalized filler is made into a finished product by 3D printing. A 3D laser printer can be used to print resin personalized fillers.

The manufacturing method disclosed above is precisely modeled in a digital way, so that the manufactured personalized filler can achieve higher fitting effect and auxiliary effect.

A personalized filler for root canal barrier surgery of the present invention includes a handle 4, and a pressurized filling rod 11 arranged on the handle 4 for extending into the root canal to pressurize and fill the filling material in the root canal; pressurized filling The rod 11 includes a connecting part 3 connected to the handle 4, a neck 2 connected to the connecting part 3, and a working end 1 provided at the end of the neck 2 for pressurizing filling material.

As shown in Figure 3, the pressurized filling rod 11 of the present invention has a columnar structure, the height of the working end 1 is 1mm, and the bottom area is the largest, and gradually decreases to 95% of the bottom area in the direction of the handle 4, and the cross-sectional area of the neck 2 is the working 95% of the area of the bottom of the end 1, extending 4mm toward the handle 4 and then connected to the connecting part 3, the 1mm height cross-sectional area of the connecting part 3 near the neck 2 gradually increases to the same area as the bottom of the working end 1, then upwards The extension is connected to the handle 4.

The first annular scale line 5, the second annular scale line 6, the third annular scale line 7, the fourth annular scale line 8 are arranged on the connecting part 3 of the present invention, and the distance between the first annular scale line 5 and the handle 4 6mm, the distance between the second ring scale line 6 and the handle 4 is 5mm, the distance between the third ring scale line 7 and the handle is 4mm, and the distance between the fourth ring scale line 8 and the handle is 3mm. The handle 4 and the pressurized filling rod 11 are integrally formed by 3D printing with resin material. The handle 4 is provided with a marking point 10 that points to the buccal surface of the affected tooth and is used to guide it in place during use. The handle 4 is provided with a screw thread 9 for enhancing friction.

A method for manufacturing a personalized obturator for root canal barrier surgery of the present invention, comprising the following steps:

Step 1. Obtain the DICOM data of the affected teeth in the patient's oral cavity through intraoperative CBCT shooting and convert them into an editable 3D data format; the 3D data format is in STL format; The device is printed with resin material.

Step 2. According to the 3D data format, design a personalized obturator for root canal barrier surgery on the 3D software according to the root length of the affected tooth, and make corresponding adjustments on the personalized obturator for root canal barrier surgery. mark;

Step 3. Print out the designed root canal barrier with a personalized obturator through a 3D laser printer.

The personalized obturator for root canal barrier surgery of the present invention is applied to root canal barrier surgery for pulp disease and periapical disease treatment, including root canal barrier surgery and pulp revascularization surgery.

It should be noted that the above embodiments are only preferred embodiments of the present invention in order to illustrate the technical scheme of the present invention, not to limit it, and certainly not to limit the patent scope of the present invention; although with reference to the foregoing embodiments The present invention has been described in detail, and those of ordinary skill in the art should understand that it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements , does not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention; If the technical problem is still consistent with the present invention, it should be included in the protection scope of the present invention; in addition, the direct or indirect application of the technical solution of the present invention in other related technical fields shall be included in the patent of the present invention in the same way. within the scope of protection.

Claims (6)

1. A manufacturing method of a personalized obturator for root canal barrier surgery, characterized in that the personalized obturator for root canal barrier surgery includes a handle (4), and is located on the handle (4) for extending into the root The inside of the tube is a pressurized filling rod (11) that is pressurized and filled with the filling material in the root canal; the pressurized filling rod (11) includes a connecting part (3) connected to the handle (4), and is connected to the connecting part (3) the neck (2), and the working end (1) at the end of the neck (2) for pressurizing and filling the filling material; the connecting part (3) is provided with a first ring-shaped scale line (5), and the second The distance between an annular scale line (5) and the handle (4) is 6 mm; The handle (4) is provided with threads (9) for enhancing friction; The handle (4) is provided with a marking point (10) pointing to the buccal surface of the affected tooth for guiding it into position during use. The manufacturing method includes the following steps: Step 1. Obtain the DICOM data of the affected teeth in the patient's oral cavity through intraoperative CBCT scanning and convert them into an editable 3D data format; Step 2. According to the 3D data format, design a personalized obturator for root canal barrier surgery corresponding to the affected tooth on the 3D software according to the root length of the affected tooth and the position of the barrier, and do the filling on the personalized obturator for root canal barrier surgery. corresponding marks; Step 3. Print out the designed root canal barrier with a personalized obturator through a 3D laser printer. 2. The manufacturing method according to claim 1, characterized in that the pressurized filling rod (11) is cylindrical or elliptical cylindrical. 3. The manufacturing method according to claim 1, characterized in that, the connecting portion (3) is provided with a second annular scale line (6), a third annular scale line (7), a fourth annular scale line (8) , and the distance between the second circular scale line (6) and the handle (4) is 5mm, the distance between the third circular scale line (7) and the handle (4) is 4mm, the fourth circular scale line (8) The distance between it and the handle (4) is 3mm. 4. The manufacturing method according to claim 1, characterized in that, the handle (4), connecting portion (3), neck (2) and working end (1) are integrally formed by 3D printing of resin material or metal material . 5. The manufacturing method according to claim 1, characterized in that, in said step 1, the 3D data format is STL format; in said step 3, the personalized plugger for root canal barrier technique adopts resin or metal Material print. 6. According to the application of a kind of personalized plugger for root canal barrier surgery according to any one of claims 1-5, it is characterized in that the personalized plugger for root canal barrier surgery is applied to endodontic diseases, apical Peripheral root canal barrier surgery.

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