JPH08103456A - Dental measuring needle - Google Patents

Abstract

PURPOSE: To surely, safely, quickly and easily measure the depth of the hole of a drill and the inside of a root canal, etc., in mouth implant operation and endodontics by providing a scale part recognizable visually and by an X-ray image on a needle main body consisting of a raw material having X-ray imaging property. CONSTITUTION: The needle main body 1 is formed in tapered shape converging toward a tip part or slate shape thinner than the diameter of a formed groove bone or groove hole by using the raw material provided with X-ray imaging property, for example, stainless steel or titanium, etc., fitting in the shape of the bone groove or bone hole cut by the mouth implant operation. A thin scale groove 2 recognizable visually and by the X-ray image is formed with equal interval at every prescribed size S1 on the needle main body 1 from its tip part 6, and also, a thick scale groove 3 as the scale part recognizable visually and by the X-ray image is formed in nearly center part of the needle main body 1. Also, an identification mark groove 4 as an identification part in the case that plural dental measuring needles are used simultaneously is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dental measuring needle used as a measure for measuring depth in oral implant surgery and measuring root canal length in endodontic therapy.

[0002]

2. Description of the Related Art In oral implant surgery, the following methods are used to measure the depth of cut bone grooves and bone holes.

A. Fine rod-shaped measure 1 with scale
01 is inserted into the cut bone groove or bone hole, the depth is directly read with the naked eye, and recorded in the chart (Fig. 8).
(See (a)).

B. Mark the depth of the bone cutting drill 102 in a state of being inserted into a bone groove or a bone hole, take out the bone cutting drill 102, measure it with a ruler 103 outside the oral cavity, read its length, and record it in a chart. (See FIG. 8B).

Above a. And b. In both methods, the depth is read with the naked eye and recorded in the chart, so that when reading with the naked eye, especially a. In, the reading error is likely to occur because the measure is read in the oral cavity.

The measure usually has thick graduations at intervals of 5 mm, but when reading, misreading 5 mm is 15
It sometimes happens that mm is mistaken for 20 mm and 18 mm is 13 mm.

Further, since it is usual to implant two or more oral implants at the same time, the record of the read length is erroneously heard by the assistant who records the numerical value, the recording order or the recording site is incorrect, and the recording result. Is erroneously recorded.

Then, the above a. And b. Since both methods are read with the naked eye, that fact does not remain as an objective record, and since the depth of the measuring needle actually inserted cannot be compared with the depth left behind it, It is not possible to know concretely the safe depth that will serve as a guide for further digging.

Therefore, at the time of oral implant surgery, in order to confirm the depth of the excavated hole and a safe depth which is a standard for continuing the excavation thereafter, c. A dental X-ray photograph is taken with the bone drill 102 inserted in the bone groove or bone hole to confirm the depth (FIG. 8).
(C)). That method was also adopted.

Next, in the treatment called endodontic treatment after removal of the pulp inside the tooth, it is necessary to accurately measure the length of the pulp cavity and the root canal of the portion where the pulp of the tooth was present. The following methods have been conventionally used to measure this.

D. File 104 (File) used to clean the inside of the root canal that once contained pulp
A mark attached to the filing part of a metal rod-shaped device called a measure ring 105 (Measure Rin
Relying on g), an X-ray photograph is taken with the file inserted in the root canal, and the length from the tip of the file inserted in the root canal to the site where the major ring 105 is attached is measured outside the oral cavity. The operator visually measures with a ruler (see FIG. 9A).

E. An electrical root canal length measuring method is a method of attaching an electrode to the metal part near the root canal entrance of the file with a clip and applying a weak current to measure the electric resistance value of the root canal to estimate the root canal depth. Is applied as (Fig. 9 (b))
reference).

The above d. , E. In the method, the assistant records the value read by the assistant by writing it on the chart while listening to it by the assistant, so that the fact does not remain as an objective record as in the case of the above oral implant surgery. .

[0014]

However, the above-mentioned a. Used in the above-mentioned oral implant surgery is used. ,
b. In this method, since the depth of the bone groove or bone hole is only read numerically with the naked eye, no specific record remains and the depth cannot be confirmed later, so there was suspicion in that record. I cannot confirm when. Also,
In order to measure the length of the marked measuring needle or bone cutting drill, a sterilized measuring ruler outside the oral cavity is required.
Furthermore, the thickness of the gingival soft tissue at the site where the implant is to be implanted is an important factor for controlling the prognosis of the implant. , B. With the measuring method of, the thickness cannot be read or recorded at all. Also, c. The method of confirming the depth of the bone groove and the bone hole by using the X-ray photograph requires the bone drill to be inserted into each hole, and the expensive spare bone drills are required for the number of holes. Since the surface of the bone drill has sharp irregularities,
The insertion is difficult and must be done very carefully, and because the bone drill is made of hard steel, the surgeon must position the X-ray film in the patient's mouth and allow the layman to fix the film himself. Patients may also push too hard and fracture the bone drill with lateral pressure, and even without fracture, they may bend and become useless for further use.

When removing after X-ray photography, it is difficult to extract it more than when it is inserted. Especially, a thin bone drill is easily broken at the time of extraction, and if it is damaged, removal of the broken piece is usually done. There is a great risk of not being able to do it.

Further, the measurement with a bone drill is time-consuming, which leads to frequent bleeding and anesthesia,
Sometimes there is always the risk of infection due to pollution.

Even if an X-ray photograph is taken,
The outline of the bone drill is only photographed together with the tissue on the radiographic film, and as a result, the depth of the already drilled bone hole, the depth of the bone remaining ahead to be dug, and the implant are implanted. The gingival soft tissue thickness at the site cannot be read as an objective length.

Further, in the process of forming a bone groove or a bone hole in the implant operation, it is a work of digging while checking the depth of the bone groove many times. , B. And c. However, the confirmation method takes time and the workability is poor.

On the other hand, in endodontics, in many cases, it is common to measure the lengths of two or more roots at the same time. For example, a molar usually has 2 to 4 root canals in one tooth. , The narrow entrance has 2-4 files and the major ring 105 attached to each other,
The operation is difficult.

D. Above. In the method of taking an X-ray photograph in the method of 1), the tip of the file located near the tip of the tooth root is confirmed with an X-ray photographic film, and the measure ring attached to the filing section near the file is used. Since the length is measured with a ruler outside the oral cavity, the length cannot be known only by X-ray photography, and the length cannot be confirmed later.

The length of the file inserted into the root canal is measured by pulling out the file for each root canal, measuring the length from the tip to the major ring, and recording the measured value by an assistant. Occasionally, the assistant may make a mistake in listening to the part, may make a mistake in recording the recorded part, or the operator may read the scale incorrectly.

The 1 to 3 files left in the oral cavity of the patient during the measurement may fluctuate, sometimes fall off, and the patient may accidentally swallow the esophagus or inhale into the trachea. Endodontics is a dangerous treatment, and dentists and patients are constantly under stress. As a result,
Prompt endodontic treatment is hindered, which hinders good therapeutic results.

E. This method is applied as an electrical root canal length measuring method, but it is only used as a rough guide because it is affected by the morphology and dryness of individual root canals and the inflammatory condition around the root of the tooth. ing.

In any of the above methods, the cumbersome operation of always measuring with an extraoral ruler or an ammeter is required, which requires manpower, time and attention for measurement and recording.

The present invention has been made to solve the above-mentioned problems of the prior art. The object of the present invention is to provide a scale identifiable by visual inspection and X-ray photography, and to measure depth visually. An object of the present invention is to provide a dental measuring needle that can be appropriately processed and that can record a measured value on an X-ray film for later recording.

[0026]

In order to achieve the above object, the present invention has a needle main body made of a material having an X-ray image shadow, and the needle main body is visually and visually It is characterized in that a scale portion that can be identified by an X-ray image is provided.

When a plurality of dental measuring needles are used at the same time, each dental measuring needle is visually and X-rayed.
It is also effective to provide a discriminating portion that can discriminate with a line image.

Further, the graduation portion which can be identified by the X-ray image is provided with a graduation having a predetermined size from the tip of the needle body, and the graduation in the substantially central portion of the needle body is also used as a reference for measurement at the same time. It is also possible to distinguish the shape of the scale from the other scales so that they can be used.

It is also preferable to use it as a bone hole depth measuring measure for oral implant surgery or a root canal length measuring measure for endodontic therapy.

[0030]

In the present invention constructed as described above, X
It has a needle main body made of a material having a line image shadow property, and the needle main body is provided with a graduation portion which can be visually and X-ray image identifiable. The scale of the measuring needle can be photographed on an X-ray photographic film and recorded.

When a plurality of dental measuring needles are used at the same time, each dental measuring needle is visually and X-rayed.
By providing an identification unit that allows identification by a line image, it is possible to identify the front and the back even if they are used overlapping in the X-ray irradiation direction.

Further, the graduation portion that can be visually identified and X-ray image is provided with a graduation with a predetermined dimension from the tip of the needle body, and the graduation in the substantially central portion of the needle body is the reference of measurement at the same time. As described above, by distinguishing the shape of the scale from other scales, it is possible to easily perform a comparative measurement between the target tissue visually and the scale provided on the needle body.

It can also be used as a bone hole depth measuring measure for oral implant surgery or a root canal length measuring measure for endodontics.

[0034]

【Example】

(First Embodiment) The present invention will be described below based on the illustrated embodiment. In Fig. 1 showing a dental measuring needle used for depth measurement in an oral implant surgery according to the first embodiment of the present invention, Fig. 1 (a) is an external perspective view and Fig. 1 (b) is an axial direction. FIG.

In FIG. 1 (b), 1 is a needle body made of a material having an X-ray image shadow, such as stainless steel or titanium, and the shape of the bone groove or bone hole cut during oral implant surgery. In accordance with the above, the taper shape that becomes narrower toward the distal end portion or the straight shape that is thinner than the diameter of the formed bone groove or bone hole is formed. 2 (plural) is visual and X
It is a fine graduation groove as a graduation portion that can be identified by a line image, and is provided at a predetermined dimension S1 from the tip portion 6 of the needle body at equal intervals. Reference numeral 3 denotes a thick graduation groove as a graduation portion which can be visually identified by an X-ray image. The graduation groove 3 is located substantially in the center of the needle body 1 and has a graduation shape of other thin shape so that it can be used as a measurement reference. It is distinguished from the scale 2 (plurality), and in the present embodiment, it is provided with a thickness of about twice so that the measurer can distinguish it at a glance, but other shapes, for example, thin two lines may be used. . Reference numeral 4 is an identification mark groove as an identification portion when a plurality of dental measuring needles are used at the same time. In FIG. 1 (b), three identification mark grooves are provided. Different types of dental measuring needles are provided such that one does not have the mark groove 4 and one does not have the groove 4. This identification mark groove 4 is also identifiable visually and by an X-ray image like the thin scale 2 and the thick scale 3 described above. In the present embodiment, the identification mark groove 4 is provided on the upper portion of the needle body 1, but it may be provided on the head portion 5. Reference numeral 5 denotes a head portion, which has a shape, for example, a spherical shape, which an operator can easily grasp when inserting a dental measuring needle into a cut bone groove or bone hole during oral implant surgery. There is a hole through which it can pass. Reference numeral 6 denotes a tip portion of the needle main body 1, which has a roundness so as not to interfere with the insertion.

Reference numerals 7, 8 and 9 denote colored bands provided in the thin graduation groove 2, the thick graduation groove 3 and the identification mark groove 4, which are a thin graduation colored band, a thick graduation colored band and an identification mark colored band. . Each colored band is made of a material that does not impair the X-ray image shadow of the scale grooves 2 and 3 and the identification mark groove 4, and has a sharpness visually distinguished from the color of the needle body 1. There is. 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 the color of the thin scale coloring band 7 from the color of the thick scale coloring band 8, and for example, the color of the thick scale coloring band 8 is the same for any type (thickness) of the dental measuring needle. It can also be black.

The dental measuring needle configured as described above is used as follows in oral implant surgery.

First, when implanting one oral implant or two or more oral implants at the same time, the formation of the holes is stopped during the process of digging the holes with the first thin drill, and the above-mentioned thickness is such that the holes can be smoothly inserted into the holes. An X-ray photograph is taken with the same number of dental measuring needles as the holes inserted. FIG. 2 is a cross-sectional view of the tissue in a state where the dental measuring needle 10 is inserted into the hole 11 and an X-ray photograph is taken. In FIG. 2, 1
2 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 the thumb of the patient, F is floss silk, and the X-ray film 14 and the plastic plate 15 are fixed in the oral cavity and X
An X-ray photograph is taken by the line camera 17. It is also possible to insert a plurality of dental measuring needles at a time, and in that case, when the string used for dentistry, for example, floss silk or chains, is inserted into the head portion 55 and then withdrawn. If you hold it in one hand and vibrate it with the other hand, you can safely pull out several dental measuring needles all at once, and if there is a string or chain even if it falls accidentally, it is safe and quick. Can be removed. Naturally, this method is adopted even in the case of one.

At this time, since the inside of the oral cavity is narrowly and curvedly configured, the standard dental X-ray photographic film of a predetermined standard is a normal photographing method, and the operator positions the X-ray photographic film in the oral cavity. Since the method of fixing with a finger of the patient at the time of photographing causes bending and deforms, the X-ray image of the desired root tip portion is distorted, and it is extremely difficult and unstable to measure an accurate dimension.

Therefore, in the case of oral implant surgery which requires particularly accurate hole depth measurement, the present inventor
The back surface of the X-ray film 14 is lined with a plastic plate 15 or the like having substantially the same size as the X-ray film 14 with double-sided adhesive tape or the like so that the X-ray film 14 is not distorted by being pressed and fixed with fingers.

FIG. 3 is an X-ray photograph taken.
The linear photographic film 14 ′ has a relative positional relationship between the front and rear rising positions of the hole and the residual tooth (18), the direction of the hole (19), the diameter of the hole (20), the thickness of the gingival soft tissue (2).
1), the depth of the hole dug in the bone (22), the prediction of the depth of the bone remaining at the tip of the hole (23), etc. are recorded as clear records for each of a plurality of holes so that the uncertain reading operation by the naked eye or It is recorded in a state where there is no risk of causing a recording error due to writing.
In addition, the surface 34 of the gingival soft tissue, the surface 35 of the alveolar bone, and the lower alveolar canal 37 are simultaneously imaged and recorded as important information.

The reference numerals used in the description of FIG. 3 are merely an example, and it is not necessary to measure or confirm only the portions of the reference numerals. In fact, it is necessary to examine other portions in more detail.

The depth of the hole dug in the bone (22), the depth of the bone remaining at the tip of the hole (23), and the thickness of the gingival soft tissue (2)
By comparing 1) with the thin graduation groove 2 and the thick graduation groove 3 provided on the dental measuring needle of the present invention photographed on the X-ray film, the dimensions can be clearly known.

Next, this photographed X-ray film 14 '
Based on the above-mentioned information recorded in (1), it is confirmed whether or not the hole formed by the first thin bone drill has been accurately drilled, and the operation of the next thick bone drill is carried out.

The above information of the hole formed by the thin bone drill is recorded in the photographed X-ray film 14 '.
In order to confirm this, the depth of the hole dug in the bone can be visually confirmed by reinserting the dental measuring needle of the present invention. Further, confirmation in a further digging state can be appropriately performed by using the dental measuring needle of the present invention as follows. FIG. 4A is an example of a method for visually confirming the depth of a hole dug in a bone in an oral implant surgery for a posterior tooth and FIG. 4B for an anterior tooth. In this example, unlike the conventional method, a new surgical method that does not perform incision and detachment of gingival soft tissue is used, and bone hole excavation is performed without performing any detachment. The operator inserts the dental measuring needle 10 until it reaches the bottom of the dug 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, 34 and other tissues, and the dental measuring needle 10 inserted into the hole 11 is read. It is possible to compare and measure how much is contained in the alveolar bone. 4 (a) and 4 (b), the thick scale coloring band 8 is located at a position directly visible to the naked eye from the surfaces 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 fine scale coloring bands 7 are provided at 4 mm intervals, the gingival soft tissue 34 From the surface of the hole 1
The dimension 36 up to the bottom of 1 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, that is, the thickness of the gingival soft tissue 34 has been confirmed by an X-ray film, For example, if it is 2 mm, 20-
It can be confirmed that the depth of the dug hole 11 is 2 = 18 mm.

In a normal oral implant operation involving incision and separation of the gingival soft tissue 34, the measurement reference position may be the most protruding portion 35 of the alveolar bone.

As described above, by using the dental measuring needle to which the present invention is applied, there is no risk of causing an uncertain reading operation by the naked eye or a recording error due to writing on the X-ray film. Since various information is recorded accurately, it can be read accurately by anyone at a later date,
Furthermore, all the problems such as inconvenience and danger due to the conventional method were solved at the same time.

That is, since all the information is recorded on the X-ray photograph, the accurate depth and length can be automatically read at any time just by looking at it. As a result, it is possible to eliminate the need for manual labor and time for each record, and it is possible to completely eliminate errors associated therewith, and it is also unnecessary to measure with an extraoral ruler and the risk of infection is reduced. And, unlike the bone drill, the outer shape is very smooth, easy to insert and remove, and does not break.

In addition, it is possible to reduce the pain of the patient by being safe and quick and shortening the operation time, and it is possible to obtain a better healing result, and it is possible to enhance the labor productivity as the operation work. Becomes (Second Embodiment) FIG. 5 shows a dental measuring needle 50 used as a root canal length measuring measure in endodontic therapy according to a second embodiment of the present invention. FIG. 5 (a) is an external perspective view, and FIG. 5 (b) is an enlarged cross-sectional view of the main part of the needle body 51.

In FIG. 5 (b), 51 is a needle body made of a material having an X-ray image shadow, for example, stainless steel, titanium, etc., and is adapted to the shape of the hole of the pulp pulp removed during endodontic treatment. , The taper shape that becomes thinner toward the tip of the same thickness as the file, or the straight shape that is thinner than the root canal hole diameter. Reference numerals 52 (plural) are thin graduation grooves as graduations that can be visually identified and X-ray images, and are provided at equal intervals with a predetermined dimension S2 from the tip portion 56 of the needle body. For example, in this embodiment, fine graduation grooves are provided on the surface for each length of about 3 mm. 53 is visual and X
It is a thick graduation groove as a graduation portion that can be identified by a line image, and is located in the substantially central portion of the needle main body 1, and the shape of the graduation is other thin graduations 52 (plural) so that it can be used as a reference for measurement. And in this embodiment,
The thickness is about twice as large as that which can be clearly discriminated by the measurer, but other shapes, for example, a thin double line may be used. 54 is an identification mark groove as an identification portion when a plurality of dental measuring needles are used simultaneously,
Although three pieces are provided in FIG. 5 (b), in order to perform identification, one having one identification mark groove 54, one having two identification marks, and one having two different measurement needles are different from each other. It is possible to identify it by providing it. The identification mark groove 54 is also identifiable visually and by an X-ray image like the thin scale 52 and the thick scale 53. Further, the identification mark groove 54 can be provided in the head portion 55.

Reference numeral 55 denotes a head portion, which has a shape easy for an operator to grip when inserting a dental measuring needle into a hole of a root canal removed during endodontic treatment. There is a hole through it. 56 is the tip of the needle body 51,
It is processed into a shape that does not interfere with insertion.

57, 58 and 59 are fine scale grooves 5
2, colored bands provided in the grooves of the thick scale groove 53 and the identification mark groove 54 are a thin scale colored band, a thick scale colored band, and an identification mark colored band. Each colored band is made of a material that does not impair the X-ray image shadow of the scale grooves 52, 53 and the identification mark groove 54, and has a sharpness visually distinguished from the color of the needle body 51. There is. The color may be determined according to the thickness and length of the dental measuring needle according to the international standard ISO. At present, the international standard ISO standard is applied to dental medical instruments. For example, in Reamer and File of endodontic treatment, the tip part with a diameter of 8 microns is gray, The color code has been decided, such as purple for 10 microns, white for 15 microns, yellow for 20 microns, red for 25 microns, blue for 30 microns, green for 35 microns, etc. Is also possible.

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, what kind (thickness) is the color of the thick scale coloring band 8?
The dental measuring needle for endodontic treatment can also be unified to be brown.

Dental measuring needle 50 constructed as described above
Is used in endodontics as follows.

For the same reason as pointed out in the above-mentioned measure for implants, it is exactly the same that the length is always measured by dental X-ray photography for accurate length measurement. As shown in 6, the above-mentioned dental measuring needle 5
An X-ray photograph is taken with 0 and 50 'being inserted into each root canal 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 will be omitted.

FIG. 7 is an X-ray photograph taken.
The length of each root canal 72,
73 is recorded along with the thin graduation 52 and the thick graduation 53, and is recorded as a clear record for each of a plurality of root canals without a risk of causing an uncertain reading operation by the naked eye or a recording error due to writing.

As a result, the depth and length of the root canal reached by the dental measuring needle can be compared at a glance with the total length of the root canal requiring extensive cleaning, so that the required total length of the root canal is easy. Can be estimated.

The reference numerals used in the description of FIG. 7 are merely examples, and it is not intended to measure or confirm only the reference portions, and it is necessary to examine other portions in more detail in practice.

Further, regardless of the presence or absence of X-ray photography, the length can be immediately known by reading the scale of the measuring tool at the entrance of the root canal with the naked eye of the operator, and therefore the operation of measuring the length with a measure outside the oral cavity It saves time and labor, and has an epoch-making effect on improving infection safety and speeding up treatment.

In a molar region with 2 to 4 root canals per tooth,
Since there is no bulky measuring ring, there is no need for the measuring rings to shift during the operation of preparing for X-ray photography or to be caught by each other, and there is no need for time-consuming operations. It can also be quickly inserted and removed, greatly avoiding a file-like fall into the oral cavity and accidental swallowing by the patient, or inhalation into the trachea or lungs, causing dangerous eye contact. .

That is, a string used for dentistry, such as floss silk or a chain, can be inserted into the head portion 55, and when it is pulled out, it is held in one hand and vibrated by the other hand. The dental measuring needles of a book can be safely pulled out at once, and even if it falls accidentally, it can be removed safely and quickly if there are strings or chains.

[0062]

The dental measuring needle of the present invention having the above-mentioned constitution and operation has a needle body made of a material having an X-ray image shadow property, and the needle body is visually and X
The provision of a graduation part that can be identified by a line image allows the graduation of the dental measuring needle to be photographed on an X-ray photographic film together with the tissue to be treated, and it is possible to perform uncertain reading operations with the naked eye or by writing. Various information can be accurately recorded without the risk of recording errors, and can be accurately read by anyone at a later date.

When a plurality of dental measuring needles are used at the same time, each dental measuring needle is visually and X-rayed.
By providing an identification unit that allows identification by a line image, it is possible to identify the front and the back even if they are used overlapping in the X-ray irradiation direction.

Further, the graduation portion which can be visually identified and X-ray image is provided with a predetermined dimension from the tip portion of the needle body, and the graduation in the substantially central portion of the needle body is the reference of measurement at the same time. As it can be used as well, by distinguishing the shape of the scale from other scales, it is possible to easily perform a comparative measurement of the target tissue visually and the scale provided on the needle body, and as a result, the dental measuring needle It is possible to easily estimate the depth and length of the bone hole or root canal that has reached, and the required remaining excavation dimensions and the total length of the root canal.

Further, if the operator reads the scale of the dental measuring needle of the present invention with the naked eye, the inserted length can be immediately known.
It eliminates the need to measure the length with an extraoral measure, saves labor and time, and has an epoch-making effect on improving the safety of infection and speeding up treatment.

The above effect can be maximized by using it as a depth measuring measure for oral implant surgery or a root canal length measuring measure for endodontic therapy.

[Brief description of drawings]

FIG. 1 is a view showing a dental measuring needle for oral implant surgery to which the present invention is applied.

FIG. 2 is a state of use of a dental measuring needle for oral implant surgery in X-ray photography.

FIG. 3 is a radiographic film in 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 shows X of a dental measuring needle used for endodontic treatment.
Usage status in radiography.

FIG. 7 is a radiographic film in endodontic treatment.

FIG. 8 is a measurement method in conventional oral implant surgery.

FIG. 9 shows a measurement method in conventional endodontic therapy.

[Explanation of symbols]

 1,51 Needle body 2,52 Thin scale groove (scale section) 3,53 Thick scale groove (scale section) 4,54 Identification mark groove (identification section) 5,55 Head section 6,56 Tip section 7,57 Fine scale Colored band (scale part) 8,58 Thick scale colored band (scale part) 9,59 Identification mark Colored band (identification part) 10,50 Dental measuring needle

Claims (5)

[Claims] 1. A needle main body made of a material having an X-ray image shadow property, wherein the needle main body is provided with a graduation portion which can be visually identified and by an X-ray image. A dental measuring needle. 2. When using a plurality of dental measuring needles at the same time, each of the dental measuring needles is provided with a discriminating portion capable of discriminating visually and by an X-ray image. Item 1. The dental measuring needle according to Item 1. 3. A graduation portion that can be visually identified and an X-ray image is provided with a predetermined dimension from the tip of the needle body, and the graduation in the substantially central portion of the needle body is a reference for measurement at the same time. The graduation shape is distinguished from other graduations so that the graduation can also be used as the caliber.
Or the dental measuring needle according to 2. 4. The dental measuring needle according to claim 1, which is used as a bone hole depth measuring measure for oral implant surgery. 5. The dental measuring needle according to claim 1, which is used as a root canal length measuring measure for endodontic therapy.