A dental gutta-percha point trimmer

Abstract

The application discloses a gutta-percha point trimmer, which comprises a measuring scale, a cutting scale and a marking scale. The cutting scale and the marking scale are parallel and perpendicular to the measuring scale respectively; the starting point of the scale of the measuring scale is at the same level with the back surface of the cutting scale; the cutting scale is in a disc structure, and a plurality of conical holes with different sizes are distributed along the circumference of the disc; the diameter of the conical hole is larger on the front surface of the cutting scale than on the back surface of the cutting scale; a gear matched with the disc structure is arranged at the proximal end of the disc structure, and a blade is arranged below the disc structure; two circular holes with different diameters are arranged on the T-shaped part of the marking scale, the length between the two circular holes is the same as the length between two conical holes on the diagonal line of the disc structure of the cutting scale; and a slidable rectangular blade is arranged above the T-shaped part. The gutta-percha point trimmer can effectively and safely cut the tip of the gutta-percha point and accurately determine the working length of the gutta-percha point.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of oral medical treatment, and particularly relates to an intraoral gutta-percha point trimmer. BACKGROUND

[0002] Each tooth has a number of canals inside, which we call root canals. The root canal includes the apical foramen at the end of the root canal and the root canal orifice at the opening of the upper segment of the root canal, and the nerve of the tooth runs inside. If the nerve of the tooth is inflamed, root canal treatment is needed. Root canal treatment, also known as endodontic treatment, is a surgical procedure to treat pulp necrosis and root infection. Root canal treatment includes root canal enlargement, root canal preparation, root canal disinfection, root canal filling and other steps. When filling the root canal, gutta-percha points are needed. Perfect root canal treatment requires that the filled gutta-percha points are just in the position of the apical foramen, which is called correct filling; if the gutta-percha points exceed the apical foramen, it is called overfilling; if the gutta-percha points do not reach the apical foramen, it is called underfilling. Overfilling and underfilling are both unsuccessful root canal treatments. When overfilling, the gutta-percha points exist outside the apical foramen for a long time, which can cause long-term inflammation outside the apical foramen and cause the patient to have long-term tooth discomfort, and in severe cases, the affected tooth may need to be extracted.

[0003] Because the shape of the root canal is irregular and the size of the apical foramen is different, the gutta-percha points need to be properly trimmed in actual application. In particular, the current standard of gutta-percha points is not enough, and for some teeth with damaged apical foramen and missing apical barrier, proper trimming of the gutta-percha points is necessary to meet the specific root canal filling requirements. When trimming the gutta-percha points, we not only need to ensure that there is an apical barrier to prevent the gutta-percha points from exceeding the apical foramen due to excessive force during the filling process, but also need to ensure that the working length of the gutta-percha points remains unchanged to prevent underfilling.

[0004] The basic structure of the gutta-percha point trimmer on the market is similar, and the main body is a level with multiple round holes. These round holes have different diameters and are used to insert different types of gutta-percha points to trim the tips of the gutta-percha points. This type of gutta-percha point trimmer can only trim the tips of the gutta-percha points, but there is a risk of poor retention of the gutta-percha points. After trimming the tips of the gutta-percha points, the working length of the gutta-percha points needs to be re-determined, which requires the doctor to constantly use a measuring scale to determine the length, and there is a certain error in the operation, which may affect the accuracy of the gutta-percha points and thus affect the overall effect of the root canal treatment. More importantly, constantly measuring the length of the gutta-percha points with a measuring scale increases the risk of contamination of the gutta-percha points, which in turn negatively affects the health of the patient.

[0005] In summary, the existing gutta-percha point trimmer has a single function and cannot meet the needs of actual work, and there is a potential health risk. SUMMARY

[0006] The present application aims at the above problems, and designs a safe and reliable dental gel point trimmer. The dental gel point trimmer can intercept the tip of the dental gel point and determine the working length of the dental gel point at the same time, greatly improving the work efficiency of dentists and reducing the treatment time of patients.

[0007] According to one aspect of the present application, a dental gel point trimmer is provided, which comprises a measuring scale, a tip-intercepting scale and a marking scale.

[0008] The measuring scale is a vertical structure, and the lower end thereof is connected to a fixed base perpendicularly.

[0009] The tip-intercepting scale is a disc structure, and is arranged horizontally on the fixed base.

[0010] The starting point of the scale of the measuring scale is at the same level with the back of the tip-intercepting scale.

[0011] The upper end of the measuring scale is connected to the marking scale perpendicularly.

[0012] The marking scale and the tip-intercepting scale are located at the same side of the measuring scale and are parallel to each other.

[0013] On the disc structure, a plurality of tapered circular holes of different sizes are distributed along the circumference of the disc, and the diameter of the tapered circular hole is larger on the front surface of the tip-intercepting scale than on the back surface of the tip-intercepting scale.

[0014] A plurality of grooves are arranged on the edge of the disc structure, and the grooves correspond to the tapered circular holes one by one.

[0015] A gear wheel matched with the grooves is arranged on the proximal end of the disc structure.

[0016] The gear wheel is connected to the fixed base, and a blade is arranged between the disc structure and the fixed base.

[0017] The marking scale is a horizontal T-shaped scale, which comprises a horizontal part and a T-shaped part, and the horizontal part is perpendicular to the T-shaped part.

[0018] The horizontal part is connected to the measuring scale perpendicularly and is parallel to the fixed base.

[0019] Two circular holes with different diameters are arranged on the T-shaped part, and the length between the two circular holes is the same as the length between two tapered circular holes on the diagonal line of the disc structure of the tip-intercepting scale.

[0020] A slidable rectangular blade is arranged above the T-shaped part.

[0021] According to one specific embodiment of the present application, a scale is arranged on the measuring scale, and the scale ranges from 0 to 40 mm.

[0022] According to another specific embodiment of the present application, the fixed base and the cutting tip are rotatably connected by riveting.

[0023] According to another specific embodiment of the present application, the measuring scale is hollow in the middle to accommodate the part connected to the marking scale.

[0024] According to another specific embodiment of the present application, the marking scale and the measuring scale are connected by a screw, a nut and a rectangular elastic metal sheet.

[0025] The rectangular metal sheet is nested on the periphery of the measuring scale, the screw passes through the rectangular metal sheet and the hollow structure of the measuring scale and is connected to the horizontal part of the marking scale, and the nut is located outside the rectangular metal sheet and is screwed with the screw.

[0026] According to another specific embodiment of the present application, there are 12 different sizes of conical circular holes distributed along the circumference of the disc structure, and the diameter of the same conical circular hole on the front surface of the cutting tip is larger than that on the back surface of the cutting tip.

[0027] According to another specific embodiment of the present application, the diameters of the conical circular holes on the back surface of the cutting tip are 0.3mm, 0.35mm, 0.40mm, 0.45mm, 0.50mm, 0.55mm, 0.60mm, 0.65mm, 0.70mm, 0.80mm, 0.90mm and 1.00mm, respectively.

[0028] According to another specific embodiment of the present application, the gear and the blade are rotatably connected to the fixed base by riveting.

[0029] According to another specific embodiment of the present application, two parallel grooves are provided on the T-shaped part for fixing the rectangular blade.

[0030] The gum tip trimmer of the present application can simultaneously cut the tip of the gum tip and determine the working length of the gum tip. The gum tip trimmer is easy to operate, the gum tip is fixed stably and not easy to slip, and the working length is more accurate. In actual application, the gum tip does not need to be taken out and manually determined on the scale, which reduces the risk of pollution and eliminates safety hazards. The gum tip trimmer can be repeatedly sterilized and used, which not only ensures safety and sterility during root canal treatment, but also further reduces the use cost. BRIEF DESCRIPTION OF DRAWINGS

[0031] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments thereof as taken in conjunction with the accompanying drawings:

[0032] Figure 1 Fig. 1 shows a structural schematic diagram of one embodiment of the measuring scale of the dental gutta-percha point trimmer provided by the present application;

[0033] Figure 2 Fig. 2 shows a top view of one embodiment of the cutting scale of the dental gutta-percha point trimmer provided by the present application;

[0034] Figure 3 Fig. 3 shows a bottom view of one embodiment of the cutting scale of the dental gutta-percha point trimmer provided by the present application;

[0035] Figure 4 Fig. 4 shows a top view of one embodiment of the marking scale of the dental gutta-percha point trimmer provided by the present application;

[0036] Figure 5 Fig. 5 shows a bottom view of one embodiment of the marking scale of the dental gutta-percha point trimmer provided by the present application;

[0037] Figure 6 Fig. 6 shows a structural schematic diagram of one embodiment of the dental gutta-percha point trimmer provided by the present application;

[0038] Figure 7 Fig. 7 shows a bottom view of one embodiment of the dental gutta-percha point trimmer provided by the present application;

[0039] Figure 8 Fig. 8 shows a left view of one embodiment of the dental gutta-percha point trimmer provided by the present application.

[0040] The same or similar reference numerals in the drawings represent the same or similar components. DETAILED DESCRIPTION

[0041] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplicity, the elements and settings of the particular examples below are described in some instances by reference to specific terminology. In order to clarify this disclosure, in the detailed description it is described that certain embodiments of the application include, but are not limited to, those described herein. This disclosure also covers all combinations of those embodiments and examples. It will be appreciated that those skilled in the art will be able to devise numerous structures which, although not explicitly described herein, embody the principles of the application and are included within its spirit and scope.

[0042] The present application provides a dental gutta-percha point trimmer, characterized in that the dental gutta-percha point trimmer comprises a measuring scale 1, a cutting scale 2 and a marking scale 3.

[0043] The measuring ruler 1 is a vertical structure, and its lower end is connected to the fixed base 5 vertically. In order to increase the firmness, the measuring ruler 1 and the fixed base 5 can be integrally formed.

[0044] The measuring ruler 1 is provided with a scale 4, and the scale range is 0-40 mm. The above scale range can basically meet the length requirement of the gutta-percha point required by all root canal filling treatments. The scale starting point of the measuring ruler 1 is at the same level with the back surface of the cutting tip ruler 2, so as to accurately measure the length of the gutta-percha point during the cutting tip process.

[0045] The upper end of the measuring ruler 1 is connected to the marking ruler 3 vertically, the marking ruler 3 and the cutting tip ruler 2 are located on the same side of the measuring ruler 1, and the two are parallel.

[0046] The cutting tip ruler 2 is a disc structure, and is horizontally arranged on the fixed base 5. The cutting tip ruler 2 is connected to the fixed base 5 by riveting with a metal rivet 7. After connection, the disc structure of the cutting tip ruler 2 can rotate 360° around the metal rivet 7.

[0047] On the disc structure, a plurality of conical round holes 8 of different sizes are distributed along the circumference direction of the disc. The diameter of the conical round hole 8 is larger on the front surface of the cutting tip ruler 2 than on the back surface of the cutting tip ruler 2, so that the upper and lower are a conical round hole 8. Preferably, on the disc structure, 12 conical round holes 8 of different sizes are distributed along the circumference direction of the disc structure. More preferably, the conical round holes 8 are uniformly distributed on the disc structure. In the process of cutting the tip of the gutta-percha point, the tip of the gutta-percha point needs to be inserted into the conical round hole 8. In order to facilitate the gutta-percha point to enter the conical round hole 8, the diameter of the same conical round hole 8 on the front surface of the cutting tip ruler 2 is larger than the diameter on the back surface of the cutting tip ruler 2.

[0048] Further, the diameters of the conical round holes 8 on the back surface of the cutting tip ruler are 0.3 mm, 0.35 mm, 0.40 mm, 0.45 mm, 0.50 mm, 0.55 mm, 0.60 mm, 0.65 mm, 0.70 mm, 0.80 mm, 0.90 mm and 1.00 mm respectively. The above-mentioned conical round holes 8 correspond to the model 10 of the gutta-percha point respectively, and are named by multiplying the diameter by 100, which are 30, 35, 40, 45, 50, 55, 60, 65, 70, 80, 90 and 100 respectively. In order to facilitate operation, the above-mentioned model 10 of the gutta-percha point can be marked beside the corresponding conical round hole 8.

[0049] A plurality of grooves 9 are arranged on the edge of the disc structure, and the grooves 9 correspond to the conical round holes 8 one by one. A gear 11 matched with the grooves 9 is arranged on the proximal end of the disc structure.

[0050] The gear 11 is also connected to the fixed base 5 by riveting. After connection, the gear 11 can rotate 360° around the rivet. Since the teeth of the gear 11 are embedded in the groove 9, the purpose of braking the disc structure by rotating the gear 11 can be achieved, and the cutting tip ruler 2 can be controlled by rotating the gear 11.

[0051] A blade 12 is arranged between the disc structure and the fixed base 5. Preferably, the blade 12 is rotatably connected to the fixed base 5 by riveting. Preferably, the blade 12 is fixed to the fixed base 5 by using the same rivet structure 7 as the disc structure. The blade 12 can rotate to achieve the purpose of cutting the dental gel tip. Preferably, the thickness of the blade 12 is in the range of 0.1mm-0.2mm, for example, 0.1mm, 0.15mm or 0.2mm. More preferably, in order to facilitate cutting, the blade 12 has a blade edge on both sides. The blade 12 is tightly attached to the back of the disc structure, and forms an angle of 25° with the horizontal plane of the back of the disc structure. After a large number of research and experiments, it is found that under this angle, the blade 12 can cut off the dental gel tip more quickly and completely.

[0052] In order to improve safety and operational convenience, the blade 12 is divided into two parts, a blade edge 14 and a blade handle 13. During operation, the blade handle 13 can be held by hand to control the cutting of the dental gel tip by the blade edge 14. Preferably, the blade edge 14 of the blade 12 only exists between the rivet and the conical hole. This design not only avoids cutting the operator by the excess blade edge 14, improving safety, but also reduces the difficulty and cost of producing the blade edge 14 due to the reduction of the blade edge part.

[0053] The marking ruler 3 is a horizontal T-shaped ruler, including a horizontal part 15 and a T-shaped part 16. The horizontal part 15 and the T-shaped part 16 are arranged perpendicularly, forming a T shape. The horizontal part 15 is connected perpendicularly to the measuring ruler 1 and is parallel to the fixed base 5.

[0054] The middle of the measuring ruler 1 is a hollow structure 6 for accommodating the part connected to the marking ruler 3, i.e. the horizontal part 15 thereof. The marking ruler 3 and the measuring ruler 1 are connected by a screw 20, a nut 21 and a rectangular elastic metal sheet 22. Specifically, the rectangular metal sheet 22 is nested on the periphery of the measuring ruler 1, the screw 20 passes through the rectangular metal sheet 22 and the hollow structure 6 of the measuring ruler 1 to connect with the horizontal part 15 of the marking ruler 3; the nut 21 is located outside the rectangular metal sheet 22 and is screwed with the screw 20. Preferably, the distal end of the screw 20 is provided with a bolt 23 for limiting the nut 21.

[0055] Two circular holes 17 with different diameters are arranged on the T-shaped part 16. The length between the two circular holes 17 is the same as the length between the two tapered circular holes 8 on the diagonal of the disc structure of the measuring scale 1. The two circular holes 17 have fixed sizes, one of which can accommodate a 0.04 dimension gutta-percha, and the other can accommodate a 0.06 dimension gutta-percha.

[0056] A slidable rectangular blade 18 is arranged above the T-shaped part 16. The rectangular blade 18 is used to mark the working length of the gutta-percha point. Preferably, two parallel grooves 19 are arranged on the T-shaped part 16 for fixing the rectangular blade 18. Preferably, in order to facilitate cutting, the rectangular blade 18 has blades on both sides. The blade part of the rectangular blade 18 is in close contact with the horizontal surface of the T-shaped part 16 and forms an angle of 25° with the horizontal surface. After a large number of researches and tests, it is found that under this angle, the rectangular blade 18 can more quickly and accurately determine the working length of the gutta-percha point.

[0057] The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0058] The gutta-percha point trimmer of the present application includes a measuring scale 1, a marking scale 3 and a cutting scale 2, wherein the cutting scale 2 is riveted to the fixed base 5.

[0059] In clinical practice, when performing root canal filling, the oral surgeon needs to achieve accurate filling (the tip of the gutta-percha point is just located at the root hole, forming a root block). For example, during the root canal treatment, the oral surgeon finds that the root canal with a larger root hole has a working length (i.e. total length) of 18 mm. The doctor enlarges the root canal to 0.04 taper X2 type (the type of machine used for enlargement, corresponding to the use of a 0.04 taper 30 type gutta-percha point), but the conventional 0.04 taper 30 type gutta-percha point cannot form a root block at the root hole, which cannot meet the requirements of root canal filling, so the gutta-percha point trimmer is needed.

[0060] First, the selected gutta-percha point is initially trimmed. First, fix the marker 3 to the position of the 18mm scale on the measuring scale 1 (the top of the marker 3 is flush with the 18mm scale), and align the 0.04 taper hole 17 on the marker 3 with the 35 taper hole 8 on the notch scale 2. Then, insert the 30 gutta-percha point into the 0.04 taper hole 17. Finally, after the tip of the gutta-percha point enters the 35 taper hole 8, rotate the bottom blade 12 of the notch scale 2 to quickly cut off the gutta-percha point beyond the taper hole 8, so that the cut surface of the gutta-percha point is flat and will not be crushed; at the same time, push the rectangular blade 18 on the marker 3 to leave a mark on the gutta-percha point on the marker 3. At this time, the trimmed gutta-percha point is a 35 gutta-percha point, and the marked position is exactly the working length of 18mm.

[0061] Second, take out the trimmed gutta-percha point and try to fill it into the root canal. Observe whether the mark made is directly opposite the working length mark on the tooth. If the mark exceeds the working length mark on the tooth, it means that the apical stop cannot be formed at the root tip hole, and the operation in the first step needs to be repeated. Rotate the notch scale 2 to align the 0.04 taper hole 17 with the 40 taper hole 8 on the notch scale 2. Trim the gutta-percha point to 40. Since the length of the gutta-percha point has changed, the rectangular blade 18 needs to be used again to make a mark on the top to determine that the working length of the gutta-percha point remains unchanged.

[0062] In this way, until the gutta-percha point forms an apical stop at the root tip under the premise that the working length remains unchanged, the purpose of proper filling of the root canal can be achieved.

[0063] Because the tips of gutta-percha points on the market are mostly irregular, the present application can also be used to trim the gutta-percha points for teeth with undamaged root tip holes. For example, for a tooth with a root canal working length of 17mm and a root canal enlarged to a 0.04 taper 30 gutta-percha point, first fix the marker 3 to the position of the 17mm scale on the measuring scale 1, and align the 0.04 taper hole 17 on the marker 3 with the 30 taper hole 8 on the notch scale 2. Then, insert the 30 gutta-percha point into the 0.04 taper hole 17 on the marker 3, and after the tip of the gutta-percha point enters the 30 taper hole 8, rotate the bottom blade 12 of the notch scale 2 to cut off the gutta-percha point beyond the taper hole 8; at the same time, push the rectangular blade 18 on the marker 3 to leave a mark on the gutta-percha point on the marker 3. At this time, the trimmed gutta-percha point is a standard 30 gutta-percha point, and the working length has been marked. When placed into the tooth for trial filling, it will be filled exactly.

[0064] The dental gel point trimmer is used, and each rotation of the gear 11 ensures that the gear of the gear 11 is just engaged with the gear of the cutting point ruler, so that the two round holes 17 on the marking ruler 3 are coincided with the two conical round holes 8 in the 12 o'clock and 6 o'clock directions of the cutting point ruler 2 respectively, so that the dental gel point is trimmed under the premise of vertical fixation, the trimmed dental gel point is more accurate, and the mark on the dental gel point is determined at the same time. The dental gel point trimmer avoids the process of taking the dental gel point off and marking the dental gel point on the separate measuring ruler 1, reduces human error, simplifies the operation process, and reduces the risk of dental gel point pollution.

[0065] The dental gel point trimmer provided by the application can simultaneously cut the tip of the dental gel point and determine the length of the dental gel point, has simple operation, high trimming precision, safety and reliability, sharp blades, can ensure that the cross section of the trimmed dental gel point is flat, the finished product treatment is good, and can be made of stainless steel, titanium alloy and the like, can be used multiple times after disinfection, has low cost, and is easy to promote and use on a large scale.

[0066] Although the example embodiments and their advantages have been described in detail, it should be understood that various changes, substitutions and modifications can be made to the embodiments without departing from the spirit and scope of the application as defined in the appended claims. For other examples, those of ordinary skill in the art should readily understand that the order of the process steps can be changed while remaining within the scope of the application.

[0067] In addition, the application range of the application is not limited to the specific embodiments of the processes, mechanisms, manufacturing, material composition, means, methods and steps described in the specification. From the disclosure of the application, those of ordinary skill in the art will readily understand that for the processes, mechanisms, manufacturing, material composition, means, methods or steps that already exist or will be developed in the future, which perform substantially the same function or obtain substantially the same result as the corresponding embodiments described in the application, they can be applied according to the application. Therefore, the appended claims of the application are intended to include these processes, mechanisms, manufacturing, material composition, means, methods or steps.

Claims

1. A gutta-percha point trimmer, characterized in that, The gutta-percha point trimmer includes: a measuring ruler, a truncated point ruler, and a marking ruler; The measuring ruler has a vertical structure, and its lower end is vertically connected to the fixed base. The truncated ruler has a disc structure and is horizontally mounted on the fixed base; The starting point of the scale of the measuring ruler is at the same level as the back of the truncated ruler; The upper end of the measuring ruler is perpendicularly connected to the marking ruler; The marking ruler and the truncated ruler are located on the same side of the measuring ruler, and they are parallel to each other; On the disc structure, a plurality of conical holes of different sizes are distributed along the circumference of the disc structure, and the diameter of the conical holes is larger on the front side of the truncated ruler than on the back side of the truncated ruler. Multiple grooves are provided on the edge of the disc structure, and each groove corresponds to a conical hole. A gear that matches the groove is provided at the near end of the disk structure; The gear is connected to the fixed base; a blade is provided between the disc structure and the fixed base; the cutting edge of the blade is in close contact with the back of the disc structure and forms a 25° angle with the back of the disc structure. The marking ruler is a horizontal T-shaped ruler, including a horizontal part and a T-shaped part; the horizontal part and the T-shaped part are perpendicular; the horizontal part is vertically connected to the measuring ruler and parallel to the fixed base; Two circular holes of different diameters are provided on the T-shaped part, and the length between the two circular holes is the same as the length between the two conical circular holes on the diagonal of the disc structure of the truncated ruler. A sliding rectangular blade is provided above the T-shaped part; the cutting edge of the rectangular blade is in close contact with the upper surface of the T-shaped part and forms a 25° angle with the upper surface. The engagement of the gear with the groove is configured such that when the gear rotates and meshes with a groove, it can drive the disk structure to rotate and make the two circular holes on the T-shaped part precisely aligned with the two conical circular holes on the truncated ruler at the 12 o'clock and 6 o'clock positions, respectively. The truncated tip ruler is rotatably connected to the fixed base by riveting; On the disc structure, 12 conical holes of different sizes are distributed along the circumference of the disc structure. The diameter of the same conical hole on the front side of the truncated ruler is 0.3 mm larger than its diameter on the back side of the truncated ruler.

2. The gutta-percha point trimmer as described in claim 1, characterized in that, The measuring ruler is equipped with a scale, with a scale range of 0-40mm.

3. The gutta-percha point trimmer as described in claim 1, characterized in that, The measuring ruler has a hollow structure in the middle to accommodate the part that connects to the marking ruler.

4. The gutta-percha point trimmer as described in claim 3, characterized in that, The marking ruler and the measuring ruler are connected by a screw, a nut and a rectangular elastic metal sheet; The rectangular elastic metal sheet is nested around the periphery of the measuring ruler. The screw passes through the rectangular elastic metal sheet and through the hollow structure of the measuring ruler to connect with the horizontal part of the marking ruler. The nut is located on the outside of the rectangular elastic metal sheet and is screwed into the screw.

5. The gutta-percha point trimmer as described in claim 1, characterized in that, The diameters of the conical holes on the back of the truncated ruler are 0.3mm, 0.35mm, 0.40mm, 0.45mm, 0.50mm, 0.55mm, 0.60mm, 0.65mm, 0.70mm, 0.80mm, 0.90mm and 1.00mm respectively.

6. The gutta-percha point trimmer as described in claim 1, characterized in that, The gear and blade are rotatably connected to the fixed base by riveting.

7. The gutta-percha point trimmer as described in claim 1, characterized in that, The T-shaped portion has two parallel grooves for fixing the rectangular blade.

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