CN111166521A - Measurement model and measurement method for length of in-vitro tooth root canal - Google Patents

Abstract

The invention discloses a measuring model and a measuring method for the length of an in vitro tooth root canal, which solve the technical problems of low simulation degree and teaching and practical clinical disjunction of the in vitro tooth root canal length measurement teaching in the prior art. The measuring model comprises a base model and a tooth model, an in-vitro tooth embedding groove is formed in the tooth model, a conductive gel block and a metal ring are arranged in the base model, a root tip hole of the in-vitro tooth embedding groove to be measured is located in the conductive gel block when the in-vitro tooth embedding groove is arranged in the in-vitro tooth embedding groove, one end of the metal ring is located in the conductive gel, and the other end of the metal ring is located outside the base. The measuring method adopts a root measuring instrument to measure the length of the root canal, and the root measuring instrument is respectively connected with the root canal file and the metal ring through two conducting wires. The root canal length measuring instrument is adopted to measure the root canal length of the in-vitro tooth in the measuring model arranged on the head-imitating model, so that a teaching scene is basically consistent with an actual clinical root canal length measuring scene, the simulation degree of teaching is improved, the teaching and the actual clinical are closer, and the teaching is more vivid and practical.

Description

Measurement model and measurement method for length of in-vitro tooth root canal

Technical Field

The invention belongs to the technical field of tooth root canal length measurement, and particularly relates to a measurement model and a measurement method for the length of an in vitro tooth root canal.

Background

Root canal therapy (root canal therapy) is a widely accepted effective treatment method for endodontic and periapical diseases at home and abroad. The principle of endodontics is to remove most of the infectious material in the root canal by mechanical and chemical means and to tightly seal the root canal by filling the canal to prevent the occurrence of periapical lesions or to promote healing of already occurring periapical lesions.

In the root canal treatment process, the measurement of the root canal length of an affected tooth is an indispensable procedure, and the existing tooth root canal length measurement generally uses a root canal length measuring instrument, also called an electronic root apex determinator, called a root determinator for short, and is a precise electronic instrument for measuring the working length of the root canal. Root survey appearance is through measuring tooth root canal length, helps the oral cavity doctor to accomplish root canal therapy, compares tradition through shooting X line piece and measuring method can improve the precision, makes the doctor have accurate assurance to root canal length in operation process, provides the guarantee for perfecting root canal therapy.

The root measuring instrument mainly forms a closed loop through the conductivity of the external tissues of the diseased teeth to measure in the using process, but in the medical teaching process, the isolated tooth is usually adopted to carry out root canal treatment teaching practice, but because the isolated tooth and the peripheral environment thereof are dry and non-conductive, the root measuring instrument is difficult to simulate the clinical operation process to carry out the teaching practice of the isolated root canal length measurement.

Therefore, the measurement model and the measurement method for the length of the in-vitro tooth root canal are designed, the root canal length measurement is carried out on the in-vitro tooth by adopting the root measuring instrument, so that a teaching scene is closer to an actual clinical root canal length measurement scene, the simulation degree of teaching is improved, the teaching is more vivid and practical, and the measurement model and the measurement method become technical problems to be solved urgently by technical personnel in the technical field.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the utility model provides a measurement model of separation root canal length and measurement method thereof, solves the technical problem that teaching practice is disjointed with actual clinical operation because it is difficult to use root measuring instrument to simulate clinical operation process to carry out root canal length measurement on separation tooth during teaching of the prior art, which results in low teaching simulation degree.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the utility model provides a measurement model of separation root canal length, includes the base model, and locates the tooth model on the base model, be equipped with at least one separation tooth inlay dress groove that is used for inlaying the separation tooth of awaiting measuring on the tooth model, be equipped with electrically conductive gel piece and becket in the base model, becket pointed end one end is located electrically conductive gel piece is inside, cyclic annular one end is located outside the base model, its apical pore is located electrically conductive gel piece when the separation tooth of awaiting measuring inlays the dress in the separation tooth inlay dress groove.

Further, the dental model comprises a gum model arranged on the base model, and the dental model is arranged on the gum model.

Further, the base model, the gum model and the tooth model are all made of insulating materials.

Further, the insulating material is plastic or plaster.

Further, the base model, the gum model, and the tooth model are of an integrally formed structure.

Furthermore, a plurality of integrally formed simulation teeth are arranged on the tooth model.

Further, the gum model and the tooth model simulate the alveolar bone and dentition structure of the oral cavity of a human body.

Furthermore, a conductive gel block filling cavity is formed in the position, corresponding to the in-vitro tooth embedding groove, of the base model, and the conductive gel block is filled in the conductive gel block filling cavity.

Further, the measuring model is installed in the oral cavity of the head model.

The method for measuring the length of the root canal by adopting the measurement model comprises the steps of measuring the length of the root canal by adopting a root measuring instrument, and respectively connecting the root measuring instrument with a root canal file and a metal ring through two wires.

Further, the measuring method specifically comprises the following steps:

step 1, installing the model in the oral cavity of the head-imitating model;

and 2, gradually deepening the root canal file into the root canal of the tooth in vitro until the root canal file exceeds the apical pore of the tooth in vitro and is inserted into the base model to form a conductive loop, then alarming by the root measuring instrument, retreating a little until the root canal file reaches the apical pore and just contacts with the gel, and reading the length of the root canal file entering the root canal, namely the length of the root canal.

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

the root canal length measuring instrument is simple in structure, scientific and reasonable in design and convenient to use, and the root measuring instrument is adopted to measure the length of the root canal of the isolated tooth, so that a teaching scene is basically consistent with an actual clinical root canal length measuring scene, the simulation degree of teaching is improved, the teaching and the actual clinical are closer, and the teaching is more vivid and practical.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

FIG. 2 is a schematic view of the present invention assembled in a dummy head model.

Fig. 3 is a view showing a state in measuring the length of a root canal according to the present invention.

Fig. 4 is a view showing a state where the present invention is assembled in a model block for measuring the length of a root canal.

Wherein, the names corresponding to the reference numbers are:

1-base model, 2-tooth model, 3-in-vitro tooth embedding groove, 4-conductive gel block, 5-gum model, 6-simulated tooth, 7-conductive gel block filling cavity, 8-head-imitating model, 9-root canal file, 10-metal ring, 11-root measuring instrument and 12-in-vitro tooth to be measured.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and thus, it should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; of course, mechanical connection and electrical connection are also possible; alternatively, they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in figures 1-4, the in vitro tooth root canal length measurement model provided by the invention has the advantages of simple structure, scientific and reasonable design and convenience in use, and the model is adopted to measure the root canal length of an in vitro tooth, so that a teaching scene is closer to an actual clinical root canal length measurement scene, the simulation degree of teaching is improved, the teaching is closer to the actual clinical scene, and the teaching is more vivid and practical. The tooth model comprises a base model 1 and a tooth model 2 arranged on the base model 1, wherein at least one in-vitro tooth embedding groove 3 for embedding an in-vitro tooth 12 to be measured is arranged on the tooth model 2, a conductive gel block 4 is arranged in the base model 2, and a root tip with a hole of the in-vitro tooth 12 to be measured is positioned in the conductive gel block 4 when the in-vitro tooth 12 is embedded in the in-vitro tooth embedding groove 3. Still be equipped with a plurality of integrated into one piece's simulation tooth 6 on the tooth model 2, preferably, tooth model 2 comprises a plurality of simulation tooth 6 as an organic whole even, and separation tooth inlays the dress groove 3 and just is located between the adjacent simulation tooth 6. The base model 1 is provided with a conductive gel block filling cavity 7 at a position corresponding to the in-vitro tooth embedding groove 3, and the conductive gel block 4 is filled in the conductive gel block filling cavity 7. The base model 1 is provided with a metal ring 10 at a position corresponding to the in-vitro tooth embedding groove 3, one end of the tip of the metal ring 10 is positioned in the conductive gel block 4, and the other end of the ring is positioned outside the base model 1. The test head further comprises a head simulating model 8, the head simulating model 8 is a simulated skull, and the measuring model is installed in the oral cavity of the head simulating model 8 so that students can simulate clinical patients in a laboratory.

The invention also comprises a gum model 5 arranged on the base model 1, and the tooth model 2 is arranged on the gum model 5. The base model 1, the gum model 5 and the tooth model 2 are of an integrally formed structure and are made of insulating materials. The insulating material is preferably plastic or plaster.

As shown in figures 3 and 4, the method for measuring the length of the excised root canal by using the measuring model of the length of the excised root canal provided by the invention adopts a root measuring instrument 11 to measure the length of the root canal, and the root measuring instrument is respectively connected with a root canal file 9 and a metal ring 10 through two leads. The method specifically comprises the following steps:

step 1, installing the model in the oral cavity of the head-imitating model;

and 2, gradually deepening the root canal file into the root canal of the tooth in vitro until the root canal file exceeds the apical pore of the tooth in vitro and is inserted into the base model to form a conductive loop, then alarming by the root measuring instrument, retreating a little until the root canal file reaches the apical pore and just contacts with the gel, and reading the length of the root canal file entering the root canal, namely the length of the root canal.

When teaching and carrying out root canal length measurement, root survey appearance both ends are connected root canal file and becket respectively, as shown in figure 2. The root canal file progressively deepens in the root canal, surpasss the apex hole, inserts electrically conductive gel, forms the conductive loop of "root canal file-gel-becket-root measuring instrument", and root measuring instrument reports to the police the root canal file and surpasss the apex hole, and the root canal file retreats a little, and the root canal file reachs the apex hole and contacts with gel just until the root canal file, and the root canal file reports to the police and reachs the apex hole just, and the root canal file gets into the intraductal length of root canal promptly this moment and is root canal length.

The measuring method is simple and easy to operate, convenient to teach, accurate and practical in measuring result, capable of effectively combining teaching with actual clinic, high in simulation degree and strong in practicability, and is suitable for being widely popularized and applied in the technical field.

Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, but not to limit the technical solutions, and certainly not to limit the patent scope of the present invention; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention; that is, the technical problems to be solved by the present invention, which are not substantially changed or supplemented by the spirit and the concept of the main body of the present invention, are still consistent with the present invention and shall be included in the scope of the present invention; in addition, the technical scheme of the invention is directly or indirectly applied to other related technical fields, and the technical scheme is included in the patent protection scope of the invention.

Claims (10)

1. The utility model provides a measurement model of separation root canal length, its characterized in that, includes base model (1), and locates tooth model (2) on base model (1), be equipped with at least one separation tooth inlay dress groove (3) that are used for inlaying dress to be measured separation tooth (12) on tooth model (2), be equipped with electrically conductive gel piece (4) and becket (10) in base model (2), becket (10) pointed end one end is located electrically conductive gel piece (4), cyclic annular one end is located outside base model (1), its apical pore is located when measuring separation tooth (12) inlay dress in separation tooth inlay dress groove (3) in electrically conductive gel piece (4).

2. The isolated root canal length measurement model according to claim 1, further comprising a gum model (5) provided on the base model (1), and the tooth model (2) is provided on the gum model (5).

3. The isolated root canal length measurement model according to claim 2, wherein the base model (1), the gum model (5) and the tooth model (2) are made of insulating materials.

4. The isolated root canal length measurement model of claim 3, wherein the insulating material is plastic or plaster.

5. The isolated root canal length measurement model according to claim 2, wherein the base model (1), the gum model (5) and the tooth model (2) are of an integrally formed structure.

6. The isolated root canal length measurement model according to claim 1, wherein the tooth model (2) is further provided with a plurality of integrally formed simulated teeth (6).

7. The isolated root canal length measurement model according to claim 2, wherein the gum model (5) and the tooth model (2) simulate human oral alveolar bone and dentition structures.

8. The model for measuring the length of the excised root canal according to claim 1, characterized in that the base model (1) is provided with a conductive gel block filling cavity (7) at a position corresponding to the excised dental embedding groove (3), and the conductive gel block (4) is filled in the conductive gel block filling cavity (7).

9. The model for measuring the length of root canal according to claim 1, further comprising a dummy head (8), wherein the model is installed in an oral cavity of the dummy head (8).

10. The method for measuring the length of a root canal using the measurement model according to any one of claims 1 to 9, wherein the measurement of the length of a root canal is performed using a root finder, and the root finder is connected to a root canal file and a metal ring via two wires, respectively; preferably, the measurement method specifically comprises the following steps:

step 1, installing the model in the oral cavity of the head-imitating model;

and 2, gradually deepening the root canal file into the root canal of the tooth in vitro until the root canal file exceeds the apical pore of the tooth in vitro and is inserted into the base model to form a conductive loop, then alarming by the root measuring instrument, retreating a little until the root canal file reaches the apical pore and just contacts with the gel, and reading the length of the root canal file entering the root canal, namely the length of the root canal.

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