JP3664503B2 - Dental measuring needle - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a dental measuring needle used as a measure for measuring a depth in oral implant surgery or measuring a root canal length in endodontic therapy.
[0002]
[Prior art]
The following methods are used to measure the depth of the cut bone groove and bone hole during oral implant surgery.
[0003]
a. A method in which a thin rod-like measure 101 with a scale is inserted into the cut bone groove or bone hole, and the depth is directly read with the naked eye and recorded in the chart (see FIG. 8A).
[0004]
b. With the bone cutting drill 102 inserted into a bone groove or hole, the depth is marked, the bone cutting drill 102 is taken out, measured with a ruler 103 outside the oral cavity, and its length is read and recorded in a medical record. (See FIG. 8B).
[0005]
A. And b. Both methods employ a method of reading the depth with the naked eye and recording it in the medical chart. In this case, reading errors are likely to occur because the major is read in the oral cavity.
[0006]
A major measure usually has a thick scale at intervals of 5 mm, but sometimes it is mistaken to read 5 mm, 15 mm is 20 mm, 18 mm is 13 mm, etc.
[0007]
In addition, since it is normal to plant two or more oral implants at the same time, the recorded length is read by the assistant who records the numerical value, the recording order or the recording site is incorrect, and the recording result is incorrect. There is a danger of being recorded.
[0008]
And a. And b. Since both methods are read by the naked eye, the fact is not left as an objective record, and the depth of the actually inserted measuring needle cannot be compared with the depth left behind. It is not possible to know the safe depth that will be a guide for continuing digging.
[0009]
Therefore, in the case of oral implant surgery, in order to confirm the depth of the hole that has been dug and a safe depth that will serve as a guide for continuing to dig,
c. A dental X-ray photograph is taken with the bone drill 102 inserted into a bone groove or bone hole, and the depth is confirmed (see FIG. 8C).
This method was also adopted.
[0010]
Next, in the treatment after removing the pulp inside the tooth, which is called endodontic treatment, it is necessary to accurately measure the length of the pulp cavity and root canal of the part where the dental pulp was located, The following methods are conventionally used for the measurement.
[0011]
d. Mark attached to the filing part of a metal rod-shaped instrument called File 104 (File), which was used to clean the inside of the root canal that once contained pulp, relying on Measure Ring 105 Then, X-ray photography is performed with the file inserted into the root canal, and the surgeon measures the length from the tip of the file inserted into the root canal to the site where the major ring 105 is attached with a ruler outside the oral cavity. It is measured with the naked eye (see FIG. 9A).
[0012]
e. Electrical root canal length measurement method is a method of estimating the root canal depth by attaching a clip to the metal part near the root canal entrance of the file and passing a weak current to measure the electrical resistance value of the root canal (See FIG. 9B).
[0013]
D. E. In this method, the number read by the surgeon is recorded by writing in the medical chart while listening to the assistant, so that fact is not left as an objective record as in the case of oral implant surgery. .
[0014]
[Problems to be solved by the invention]
However, the a. , B. In this method, since the depth of the bone groove and bone hole is only read with the naked eye as a numerical value, there is no specific record and the depth cannot be confirmed at a later time. In some cases it cannot be confirmed. Further, in order to measure the length of the marked measuring needle or the bone cutting drill, a sterilization measuring instrument sterilized outside the oral cavity is required. Furthermore, the thickness of the gingival soft tissue at the site where the implant is implanted is an important factor for the management of the prognosis of the implant. , B. In this measurement method, the thickness cannot be specifically read or recorded.
C. The method of confirming the depth of the bone groove and the bone hole using the X-ray photograph requires inserting a bone drill into each hole, and an expensive spare bone drill is required by the number of holes. Since the surface of the bone drill has sharp irregularities, it is difficult to insert and must be done very carefully. Also, since the bone drill is made of hard steel, the operator can remove the X-ray film from the patient's oral cavity. When positioning the film inside and fixing the film by the patient himself, there is a risk that the amateur patient will push too hard and the bone drill will break due to lateral pressure, and even if it does not break, it will bend and be used for subsequent use Sometimes it becomes useless.
[0015]
When removing after X-ray photography, it is difficult to pull out more than at the time of insertion. Especially, a thin bone drill is easy to break at the time of pulling out, and if it breaks, the broken piece cannot be removed normally. There is a great danger.
[0016]
In addition, the measurement with a bone drill is time-consuming, and therefore there is a constant risk of infection due to increased bleeding and anesthesia, and sometimes contamination.
[0017]
Even if an X-ray photograph is taken, only the outer shape of the bone drill is photographed with the tissue on the X-ray film, and as a result, the depth of the already drilled bone hole and the point to be drilled from now on. The depth of the remaining bone and the thickness of the gingival soft tissue at the site where the implant is to be implanted cannot be read as objective lengths.
[0018]
Further, in the process of forming a bone groove and a bone hole by an implant operation, it is an operation of digging while confirming the depth many times. , B. And c. This confirmation method takes time and is poor in workability.
[0019]
On the other hand, in endodontic therapy, it is common to measure the length of two or more roots at the same time. For example, in the case of molars, there are usually 2 to 4 root canals in one tooth. Two to four files at the entrance and the major ring 105 attached thereto overlap each other and are difficult to operate.
[0020]
D. In this method, the X-ray photograph is taken and measured, and the tip of the file located near the tip of the tooth root is confirmed with an X-ray photograph film, and the measurement ring attached to the filing part at the file hand is relied on. Since the length is measured with a ruler outside the oral cavity, there is a disadvantage that the length cannot be known only by an X-ray photograph, and the length cannot be confirmed at a later date.
[0021]
Also, the length of the file inserted into the root canal is measured by pulling out the file for each root canal and reading the length from the tip to the major ring and recording the measured value with an assistant. The assistant may miss the site, may misrecord the site, or the operator may misread the scale.
[0022]
And 1 to 3 files left in the patient's oral cavity during measurement may be shaken, sometimes dropped out and accidentally swallowed into the esophagus, or inhaled into the trachea. As therapy is a dangerous treatment, dentists and patients are always stressed. As a result, smooth and rapid endodontic treatment is hindered, which hinders good treatment results.
[0023]
e. Although this method is applied as an electrical root canal length measurement method, it is affected only by the morphology of individual root canals, the dry state, and the inflammation conditions around the roots, so it is only used as a rough guide. ing.
[0024]
All of the above methods necessitate a cumbersome operation that must be measured with a ruler or ammeter outside the oral cavity, which requires manpower, time, and attention.
[0025]
  The present invention has been made to solve the above-mentioned problems of the prior art, and the object of the present invention is visually and by X-ray photography., The depth of the bone hole, and the positional relationship between the bone hole and surrounding tissues (eg maxillary sinus floor, roots of adjacent teeth, implants, gingival soft tissue, alveolar bone, inferior alveolar canal and mental hole) In addition to being able to measure and record, it has both convenience and safetyIt is to provide a dental measuring needle.
[0026]
[Means for Solving the Problems]
  In order to achieve the above object, the present invention has a needle body made of a material having an X-ray image property, and the needle bodyFrom the tip of the wholeA scale that can be identified visually and by X-ray image is provided.Has a hole for inserting a dental stringIt is characterized by.
[0027]
In the case where a plurality of dental measuring needles are used at the same time, it is also effective to provide an identification unit that can identify each dental measuring needle visually and by an X-ray image.
[0028]
Furthermore, the scale part that can be identified by the X-ray image is provided with a scale with a predetermined dimension from the tip of the needle body, and the scale at the substantially central part of the needle body can be used as a measurement reference at the same time. It is also possible to distinguish the scale shape from other scales.
[0029]
It is also suitable to use as a bone hole depth measurement measure for oral implant surgery or a root canal length measurement measure for endodontic therapy.
[0030]
[Action]
In this invention comprised as mentioned above, it has a needle | hook main body produced with the raw material with X-ray image shading property, and this needle | hook main body has a scale part which can be identified visually and by an X-ray image. Since the scale of the dental measuring needle is photographed on the X-ray photographic film together with the tissue to be treated, it can be recorded.
[0031]
Also, when using multiple dental measuring needles at the same time, each dental measuring needle is provided with an identification part that can be identified visually and by X-ray image, so that it can be used overlapping with the X-ray irradiation direction. In addition, the front and rear can be identified.
[0032]
Furthermore, the scale part that can be identified visually and by X-ray image is provided with a scale with a predetermined dimension from the tip of the needle body, and the scale at the substantially central part of the needle body is also used as a measurement reference at the same time. By distinguishing the shape of the scale from other scales so as to be possible, it is possible to easily perform a comparative measurement between the target tissue visually performed and the scale provided on the needle body.
[0033]
It can also be used as a bone hole depth measuring measure for oral implant surgery or a root canal length measuring measure for endodontic therapy.
[0034]
【Example】
(First embodiment)
Hereinafter, the present invention will be described based on illustrated embodiments. FIG. 1 shows a dental measuring needle used for depth measurement in oral implant surgery according to a first embodiment of the present invention. FIG. 1 (a) is an external perspective view, and FIG. 1 (b) is an axial direction. It is sectional drawing.
[0035]
In FIG. 1 (b), reference numeral 1 denotes a needle body made of a material having an X-ray image property, for example, stainless steel or titanium, which is adapted to the shape of the cut bone groove or bone hole at the time of oral implant surgery. It has a tapered shape that narrows toward the tip, or a straight shape that is thinner than the diameter of the formed bone groove or bone hole. Reference numeral 2 (plurality) denotes a fine scale groove as a scale part that can be identified visually and by an X-ray image, and is provided at equal intervals with a predetermined dimension S1 from the tip part 6 of the needle body. Reference numeral 3 denotes a thick graduation groove as a graduation portion that can be identified visually and by an X-ray image. The graduation groove 3 is located at a substantially central portion of the needle main body 1 so that the scale can be used as a reference for measurement. It is distinguished from the scale 2 (plurality). In this embodiment, the thickness is about twice as large as the measurer can clearly distinguish, but other shapes such as two thin lines may be used. . Reference numeral 4 denotes an identification mark groove as an identification portion when a plurality of dental measuring needles are used simultaneously. In FIG. 1B, three identification mark grooves are provided. It can be identified by providing different ones for the dental measuring needles, those having no mark groove 4, those having one, and those having two. This identification mark groove 4 can also be identified by visual observation and an X-ray image similarly to the thin scale 2 and the thick scale 3. In this embodiment, the identification mark groove 4 is provided in the upper portion of the needle body 1, but it can also be provided in the head portion 5. Reference numeral 5 denotes a head portion, which has a shape that is easy to grasp when an operator inserts a dental measuring needle into a cut bone groove or bone hole during oral implant surgery, for example, a spherical shape. There is a hole through which it can pass. Reference numeral 6 denotes a distal end portion of the needle body 1, which is rounded so as not to hinder insertion.
[0036]
7, 8 and 9 are coloring bands provided in the thin graduation groove 2, the thick graduation groove 3, and the identification mark groove 4, and are a thin graduation coloring band, a thick graduation coloring band, and an identification mark coloring band. Each colored band is made of a material that does not impair the X-ray image properties of the scale grooves 2 and 3 and the identification mark groove 4, and has a sharpness that is visually distinguished from the color of the needle body 1. Yes. The color may be determined according to the thickness and length of the dental measuring needle according to the international standard ISO. It is also possible to distinguish between the color of the thin scale coloring band 7 and the color of the thick scale coloring band 8. For example, the color of the thick scale coloring band 8 is the same for any type (thickness) dental measuring needle. It can also be black.
[0037]
The dental measuring needle configured as described above is used as follows in oral implant surgery.
[0038]
First, when implanting one or more oral implants at the same time, stop the formation of the hole in the middle of digging the hole with the first thin drill, and the above-mentioned dental thickness that can be smoothly inserted into the hole An X-ray photograph is taken with the number of measuring needles inserted as many as the number of holes. FIG. 2 is a cross-sectional view of the tissue in a state where an X-ray photograph is taken by inserting the dental measuring needle 10 into the hole 11 formed therein. In FIG. 2, 12 is alveolar bone, 13 is gingival soft tissue, 14 is an X-ray film, 15 is a plastic plate lining the X-ray film 14, 16 is a patient's thumb, and F is a floss silk. The plastic plate 15 is fixed in the oral cavity, and an X-ray photograph is taken by the X-ray camera 17.
It is also possible to insert a plurality of dental measuring needles at a time. In this case, a string used for dentistry, such as floss silk or a chain, is inserted into the head portion 55 and removed. If you hold it in one hand and vibrate it with the other hand, you can safely pull out several dental measuring needles at once, and if it falls too much, it will be safe and quick if there is a string or chain Can be removed. Of course, this method is adopted even in the case of one.
[0039]
At this time, since the inside of the oral cavity is narrow and curved, the standard dental X-ray photographic film of a predetermined standard is a normal imaging method, and the operator positions the X-ray photographic film in the oral cavity so that the patient's fingers In the method of fixing at the time of imaging, since it is bent and deformed, the desired X-ray image of the tip of the root is distorted and it is extremely difficult and unstable to measure an accurate dimension.
[0040]
Therefore, particularly in the case of oral implant surgery that requires accurate hole depth measurement, the present inventor double-sided the plastic plate 15 having the same size as the X-ray film 14 on the back surface of the X-ray film 14. The X-ray film 14 is devised so that the X-ray film 14 is not distorted by backing with a tape or the like and pressing with a finger.
[0041]
FIG. 3 is a photographed X-ray photograph. This X-ray photographic film 14 ′ has a relative positional relationship (18) between the front and rear standing positions of the holes and the remaining teeth, the direction of the holes (19), The diameter of the hole (20), the thickness of the gingival soft tissue (21), the depth of the hole dug into the bone (22), the prediction of the depth of the bone remaining at the tip of the hole (23), etc. As a clear record, it is recorded without any risk of causing an uncertain reading operation with the naked eye or a recording error due to writing. Further, the surface 34 of the gingival soft tissue, the surface 35 of the alveolar bone, and the lower alveolar tube 37 are simultaneously photographed and recorded as important information.
[0042]
The reference numerals used in the description of FIG. 3 are merely examples, and it is not necessary to measure or confirm only the part of the reference numeral. In fact, it is necessary to examine other parts in more detail.
[0043]
The depth of the hole excavated in the bone (22), the prediction of the depth of the bone remaining at the tip of the hole (23), and the thickness of the gingival soft tissue (21) were measured on the X-ray film. By comparing with the thin scale grooves 2 and the thick scale grooves 3 provided on the measuring needle, the dimensions can be clearly known.
[0044]
Next, based on the above-mentioned information recorded on the photographed X-ray film 14 ′, it is confirmed whether or not the hole formed by the first thin bone drill is accurately dug, and the next sequential thick bone drill Proceed to work.
[0045]
The above-mentioned information of the hole formed by the thin bone drill is recorded on the photographed X-ray film 14 ', and in order to confirm this, the dental measuring needle of the present invention is reinserted to visually check the hole. It is also possible to check the depth of the hole excavated in the bone. Further, the confirmation in the state of further digging can be appropriately performed by using the dental measuring needle of the present invention as follows. FIG. 4 (a) shows an example of a method for confirming the depth of a hole dug in a bone by visual inspection in an oral implant operation of the back tooth, and FIG. 4 (b). In this example, unlike the conventional method, a new technique that does not perform incision and exfoliation of gingival soft tissue is used, and bone hole excavation is performed without any exfoliation. The surgeon inserts the dental measuring needle 10 until it reaches the bottom of the excavated hole 11. Then, the thin scale coloring band 7 and the thick scale coloring band 8 provided on the dental measuring needle 10 can be read with reference to the gingival surfaces 33 and 34 and other tissues, and the dental measuring needle 10 inserted into the hole 11 is read. It is possible to comparatively measure how much is contained in the alveolar bone. In FIGS. 4 (a) and 4 (b), the thick scale colored band 8 is in a position where it can be directly confirmed by the naked eye from the surface of the gingival soft tissues 33 and 34, and by measuring the dimensions 31 and 32 in the positional relationship, For example, in FIG. 4B, when the center position of the thick scale coloring band 8 is 24 mm from the tip of the dental measuring needle 10 and the other thin scale coloring bands 7 are provided at intervals of 4 mm, the gingival soft tissue 34. The dimension 36 from the surface to the bottom of the hole 11 is 24-4 = 20 mm, and the dimension from the surface of the gingival soft tissue 34 to the most protruding portion 35 of the alveolar bone, ie, the thickness of the gingival soft tissue 34 is If it is confirmed with an X-ray film, for example, 2 mm, it can be confirmed as the depth of the hole 11 where 20-2 = 18 mm is dug.
[0046]
In a normal oral implant operation involving incision and detachment of the gingival soft tissue 34, the measurement reference position may be the most protruding portion 35 of the alveolar bone.
[0047]
As described above, by using the dental measuring needle to which the present invention is applied, various information described above without any risk of causing an uncertain reading operation by the naked eye or a recording error by writing on the X-ray film. Was recorded accurately, so that anyone could read it accurately at a later date, and all the problems such as inconvenience and danger caused by the conventional method were solved at the same time.
[0048]
That is, since all the information is recorded in the X-ray photograph, the accurate depth and length can be automatically read at any time just by looking at the information. As a result, manual labor and time for recording in the medical chart are not required, errors associated therewith can be completely eliminated, and measurement with a ruler outside the oral cavity is not required, thereby reducing the risk of infection. And unlike the bone drill, the outer shape is very smooth, it is easy to insert and remove, and it will not break.
[0049]
In addition, since the operation time can be shortened safely and promptly, the patient's pain can be reduced, and a better healing result can be obtained. As a result, labor productivity as an operation can be improved.
(Second embodiment)
FIG. 5 shows a dental measuring needle 50 used as a root canal length measurement measure in endodontic therapy according to the second embodiment of the present invention. FIG. 5A is an external perspective view, and FIG. 5B is an enlarged cross-sectional view of the main part of the needle main body 51.
[0050]
In FIG. 5 (b), reference numeral 51 denotes a needle body made of a material having an X-ray image property, such as stainless steel or titanium, and a file corresponding to the shape of the hole of the removed pulp in endodontic therapy. It has a tapered shape that narrows toward the tip of the same thickness, or a straight shape that is thinner than the root canal diameter. 52 (plurality) are thin scale grooves as scale parts that can be identified visually and by X-ray images, and are provided at equal intervals with a predetermined dimension S2 from the distal end portion 56 of the needle body. For example, in the present embodiment, fine graduation grooves are provided on the surface every length of about 3 mm. 53 is a thick graduation groove as a graduation portion that can be identified visually and by an X-ray image. It is distinguished from the scales 52 (plurality). In this embodiment, the thickness is approximately doubled so that the measurer can clearly distinguish it, but other shapes, for example, two thin lines may be used. . Reference numeral 54 denotes an identification mark groove as an identification portion when a plurality of dental measuring needles are used at the same time. In FIG. 5 (b), three identification mark grooves are provided. It is possible to distinguish by providing different dental measuring needles, one having no mark groove 54, one having one, and two having one. The identification mark groove 54 can also be identified by visual observation and an X-ray image similarly to the thin scale 52 and the thick scale 53. Further, the identification mark groove 54 can be provided in the head portion 55.
[0051]
Reference numeral 55 denotes a head portion which is shaped to be easily grasped when an operator inserts a dental measuring needle into a hole of a root canal which has been removed by an operator during endodontic treatment. Is provided. Reference numeral 56 denotes a tip portion of the needle body 51, which is processed into a shape that does not hinder insertion.
[0052]
57, 58 and 59 are colored bands provided in the thin scale groove 52, the thick scale groove 53 and the identification mark groove 54, and are a thin scale colored band, a thick scale colored band and an identification mark colored band. Each of the colored bands is made of a material that does not impair the X-ray image properties of the scale grooves 52 and 53 and the identification mark groove 54, and has a distinctness visually distinguished from the color of the needle body 51. Yes. The color may be determined according to the thickness and length of the dental measuring needle according to the international standard ISO. Currently, the international standard ISO standard is also applied to dental instruments. For example, in the case of Reamer or File for endodontic therapy, the tip with a diameter of 8 microns is gray, 10 micron is purple, 15 micron is white, 20 micron is yellow, 25 micron is red, 30 micron is blue, 35 micron is green, and so on. Is also possible.
[0053]
It is also possible to distinguish the color of the thin scale coloring band 57 from the color of the thick scale coloring band 58. For example, the color of the thick scale coloring band 8 can be any kind (thickness) of dental for endodontic treatment. The measuring needles can be unified to be brown.
[0054]
The dental measuring needle 50 configured as described above is used as follows in endodontic therapy.
[0055]
For the same reason as pointed out in the previous measure for implants, the exact length is always measured by dental X-ray photography, which is exactly the same as shown in FIG. As described above, X-ray photography is performed in a state where the dental measuring needles 50 and 50 'are inserted into the respective root canals as a measuring tool. Since the method shown in FIG. 2 described in the first embodiment can be used as the X-ray photography method, the description thereof is omitted.
[0056]
FIG. 7 is a photographed X-ray photograph. In this X-ray photographic film 64 ′, the lengths 72 and 73 of the root canals are recorded together with the thin scale 52 and the thick scale 53, and a plurality of root canals are left. Each clear record is recorded without any risk of interfering with an uncertain reading operation with the naked eye or a recording error due to writing.
[0057]
As a result, it is possible to compare at a glance the depth and length in the root canal that the dental measuring needle has reached and the total length of the root canal that requires an enlarged cleaning procedure, so that the required total length of the root canal can be easily estimated. .
[0058]
The reference numerals used in the description of FIG. 7 are merely examples, and it is not necessary to measure or confirm only the part of the reference numeral. In fact, it is necessary to examine other parts in more detail.
[0059]
Regardless of the presence or absence of X-ray photography, the length can be immediately determined by reading the scale of the measuring instrument at the root canal entrance with the naked eye of the surgeon, thus eliminating the need to measure the length with a measure outside the oral cavity. It takes less time and manpower, and has an epoch-making effect on improving the safety of infection and speeding up treatment.
[0060]
Since there is no bulky measuring ring in the molar part with 2 to 4 root canals in one tooth, the measuring ring is shifted or caught in the operation when preparing for X-ray photography. There is no need for time, and multiple dental measuring needles can be quickly inserted and removed at once, falling into the mouth like a file and accidentally swallowed by the patient, or into the trachea and lungs You can greatly avoid inhaling and meeting dangerous eyes.
[0061]
That is, a string used for dentistry, such as floss silk or a chain, can be inserted into the head portion 55. When pulling it out, it is held in one hand and vibrated with the other hand. The measuring needle can be removed safely at once, and when it falls too much, if there is a string or chain, it can be removed safely and quickly.
[0062]
【The invention's effect】
  The dental measuring needle of the present invention having the configuration and operation as described above has a needle body made of a material having an X-ray image property, and the needle bodyFrom the tip of the wholeBy providing a scale that can be identified visually and by X-ray image, it is possible to photograph the scale of the dental measuring needle on the X-ray photographic film together with the tissue to be treated, and an uncertain reading operation with the naked eye Various information can be accurately recorded without the risk of recording errors due to or writing, and can be read accurately by anyone who sees it at a later date.Therefore, the depth of the bone hole as well as the positional relationship between the bone hole and the surrounding tissue (for example, maxillary sinus floor, roots of adjacent teeth, implants, gingival soft tissue, alveolar bone, inferior alveolar canal and mental hole) It can be measured and recorded accurately. Furthermore, if a dental string is inserted into the hole and used, it can be easily pulled out, and safety can be secured even in the event of an unexpected drop.
[0063]
Also, when using multiple dental measuring needles at the same time, each dental measuring needle is provided with an identification part that can be identified visually and by X-ray image, so that it can be used overlapping with the X-ray irradiation direction. In addition, the front and rear can be identified.
[0064]
Furthermore, the scale part that can be identified visually and by X-ray image is provided with a scale with a predetermined dimension from the tip of the needle body, and the scale at the substantially central part of the needle body is also used as a measurement reference By making the scale shape distinguishable from other scales, it is possible to easily compare the target tissue visually and the scale provided on the needle body, and as a result, the bone that the dental measuring needle has reached The depth and length within the hole and root canal, as well as the remaining required drilling dimensions and the total length of the root canal can be easily estimated.
[0065]
In addition, since the inserted length can be found immediately by reading the scale of the dental measuring needle of the present invention with the naked eye of the surgeon, the operation of measuring the length with a measure outside the oral cavity can be omitted. It has a significant effect on improving the safety of infection and speeding up treatment.
[0066]
By using it as a depth measurement measure for oral implant surgery or a root canal length measurement measure for endodontic therapy, the above-mentioned effect can be utilized to the maximum.
[Brief description of the drawings]
FIG. 1 is a diagram showing a dental measuring needle for oral implant surgery to which the present invention is applied.
[Fig. 2] Fig. 2 shows the use state of a dental measuring needle for oral implant surgery in X-ray photography.
FIG. 3 is an X-ray film for oral implant surgery.
FIG. 4 is an explanatory diagram of a visual confirmation method in oral implant surgery.
FIG. 5 is a dental measuring needle used for endodontic therapy.
[Fig. 6] Fig. 6 shows a use state of an X-ray image of a dental measuring needle used for endodontic therapy.
FIG. 7 is an X-ray film for endodontic therapy.
FIG. 8 is a measurement method in conventional oral implant surgery.
FIG. 9 is a measurement method in conventional endodontic therapy.
[Explanation of symbols]
1,51 needle body
2,52 Narrow scale groove (scale part)
3,53 Thick scale groove (scale part)
4,54 Identification mark groove (identification part)
5,55 head
6,56 Tip
7, 57 Thin scale coloring band (scale part)
8,58 Thick scale coloring band (scale part)
9,59 Identification mark coloring band (identification part)
10,50 Dental measuring needle

Claims (4)

It has a needle body made of a material having X-ray image shading properties, is provided with a scale portion that can be visually and X-ray-identified from the tip of the needle body, and passes through a dental string A dental measuring needle characterized by having a hole for the purpose .   2. The identification unit according to claim 1, wherein when a plurality of dental measurement needles are used simultaneously, each dental measurement needle is provided with an identification unit that can be identified visually and by an X-ray image. Dental measuring needle.   The scale part that can be identified visually and by X-ray image is provided with a scale with a predetermined dimension from the tip of the needle body, and the scale at the substantially central part of the needle body can be used as a measurement reference at the same time. The dental measuring needle according to claim 1 or 2, wherein the scale shape is distinguished from other scales.   The dental measuring needle according to claim 1, 2 or 3, which is used as a bone hole depth measuring measure for oral implant surgery.

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