JP2011161027A - Dental treatment apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To freely and easily set an arrangement position of a treatment apparatus with respect to a treatment apparatus body part and to make the structure easy to handle, simple, and inexpensive. <P>SOLUTION: A dental treatment apparatus constituted so that various treatment instruments are freely attachable and detachable via joint hoses includes: various treatment instruments; various joint hoses which incorporate a supply circuit for supplying only a operation medium necessary in association with the treatment instruments, have connection terminals for connecting the treatment instrument at one ends, and have connection terminals connected to a treatment apparatus body part 7 at the other ends; an operation medium supply setting means 6 for selectively setting supply of various operation media with respect to the treatment instruments arranged at arbitrary positions and supplying only operation media necessary for operating the treatment instruments; an operation media supply control unit 20; a supply circuit for supplying the various operation media in association with any of the various treatment instruments; and a reading means 8 for reading the operation media supply setting means 6. Only the working media necessary for the treatment instruments arranged at arbitrary positions are selected and supplied. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a dental treatment apparatus in which various treatment instruments that operate using electricity, water, air or the like as a medium are detachably attached to a treatment apparatus body via a joint hose.

  Conventional dental treatment instruments include handpieces, micromotors, and ultrasonic scalers. One end of the flexible joint hose is detachably connected to these treatment instruments via a connection terminal, and the other end is detachably connected to the treatment apparatus main body via the connection terminal. In addition, this treatment instrument is always hooked on the instrument hanger of the treatment apparatus main body, and when used, the operator selects the type and picks it up from the instrument hanger and is supplied from the treatment apparatus main body side. The treatment is performed while operating with a working medium such as electricity, water, air, or the like.

  However, it is desirable that the treatment device is equipped with as many kinds of treatment devices as possible in the main body of the treatment device and can be treated while freely selecting these treatment devices. Many joint hoses are led out from a wide area on the main body side, and there is a problem that the joint hoses are entangled and obstruct medical care. For this reason, a device that has been developed so that a minimally necessary treatment instrument necessary for treatment can be detachably attached to the treatment device main body via a joint hose has been developed. . As this conventional dental treatment apparatus, for example, techniques disclosed in Patent Documents 1, 2, and 3 are known.

  The invention of Patent Document 1 supplies a specific working medium to a treatment apparatus main body, for example, supplies only a power source as the working medium, or a working medium supplied to supply a plurality of types such as a power source, water, and air. A dedicated energizing connection terminal is provided for each type, and a treatment device that supports this dedicated energizing connection terminal can be detachably connected via a multi-joint hose. A terminal for determining the type of therapeutic device to be used is included, so that the type of therapeutic device can be automatically determined and the necessary working medium corresponding to the type can be automatically supplied. It is characterized by having.

  The invention of Patent Document 2 is for a dental apparatus having a structure in which the connector group on the treatment apparatus main body side and the connector group on the treatment instrument side are structurally the same and can be coupled to each other by an easily removable coupling means. It has been proposed as a control device. More specifically, this device has a treatment device main body and a supply conduit for a working medium such as electric current and water, and a treatment instrument is connected to each supply conduit via a connector. The connected therapeutic device is detachably hooked on the plurality of buttocks on the therapeutic device main body side, and the working medium can be supplied from the therapeutic device main body to the therapeutic device in a state where the connecting elements of the corresponding connecting devices are connected to each other. In the control device to be in a state, the connection device on the treatment device main body side is disposed at a position where the treatment device main body side can be easily approached from the outside of the treatment device body, and the connection device group on the treatment device body side and the connection device group on the treatment device side are each structural. In consideration of the working medium of all the treatment instruments, the connection means on the treatment apparatus side can be connected to the connection equipment on the treatment apparatus main body side in any combination. The connecting elements for the individual working media in the connection are arranged at the planned locations. In addition, when connecting the treatment instrument connector to one of the connection devices on the treatment apparatus main body side, to provide an electronic circuit for evaluating a signal for switching on the control mechanism for the working medium associated with the connection device. A mechanically cooperating coding means is included in the connector.

  The invention of Patent Document 3 has been previously invented by the inventor of the present application. The present invention relates to a dental treatment apparatus body in which various treatment instruments that operate using electricity, water, and air as a medium are detachable from the treatment apparatus body via a multi-joint hose, and are necessary for the type of treatment instrument. Various multi-joint hoses that have a connection terminal that connects to the treatment instrument at one end and a connection terminal that connects to the treatment device main body at the other end have a built-in supply circuit that supplies only the working medium. A non-contact type sensor unit composed of a light reflection type sensor or a light transmission type sensor capable of detecting the type of the treatment instrument is provided at a connection part between the terminal and the connection terminal on the treatment apparatus main body side. On the other hand, the treatment apparatus main body is provided with a liquid crystal display screen and a panel switch, and is configured to be able to set the environment such as the placement position of the treatment instrument and the selection and supply of the working medium by operating the panel switch. In addition, when a therapeutic device other than a predetermined type is connected, a warning display and / or a warning sound for warning that a connection is detected by detecting that there is a connection error is provided.

  That is, in each of the conventional examples, the type of the treatment instrument connected to the treatment apparatus main body is automatically detected on the treatment apparatus main body, and the working medium necessary for the treatment instrument is automatically supplied. It is configured or is automatically detected, and when a treatment instrument other than a predetermined type is connected, a misconnection is detected and a warning display and / or a warning sound are notified.

  However, according to the invention of Patent Document 1, the joint portion and the multi-joint hose in which the multi-joint joint portion realizes the multi-joint are integrally treated, and each treatment that is detachably attached to the multi-joint hose itself. Since it is necessary to provide various electric wirings and air and water pipes so that they can be used in common with the instruments, there is a problem that the multi-joint hose becomes thick and heavy and difficult to treat.

  In the invention of Patent Document 2, the connection device group on the treatment apparatus main body side and the connection device group on the treatment device side are structurally the same and can be connected to each other by a connection means that can be easily removed. Although the coding means for identifying the device is illustrated, there is a problem that the joint portion must be enlarged by the connection terminal of the coding means.

  The invention of Patent Document 3 incorporates a supply circuit that supplies only a necessary working medium corresponding to the type of treatment instrument, has a connection terminal that connects to the treatment instrument at one end, and the treatment apparatus main body at the other end. Various multi-joint hoses having connection terminals to be connected are exemplified, and as the connection terminals to be connected to the treatment apparatus main body side, each of the identification members is described by taking a light reflection type sensor and a light transmission type sensor as an example. There is a problem in that the connection portion must be enlarged by providing the identification member in the portion.

  In any case, the multi-joint hose connected to the treatment instrument needs to always sterilize the inside of the conduit in order for bacteria to propagate in the moisture in the conduit. Therefore, for sterilization, drain the water in the conduit before use, or perform chemical cleaning, or wipe off the cutting powder and body fluid adhering to the outer surface of the hose with anhydrous alcohol or autoclave (high pressure steam sterilization). Etc. are generally performed.

  In addition, when the sterilization process is performed in this manner, the electrical contact deteriorates, so that an apparatus that automatically recognizes the type of the treatment instrument may cause malfunction. Furthermore, the hose becomes unusable after about 250 sterilization treatments, so it needs to be replaced with a new one. For this reason, it is desirable to make the multi-joint hose disposable by sterilization, but in order to make it disposable, the hose must be inexpensive. In this regard, the multi-joint hose used in the conventional treatment instrument has a problem that it is expensive and difficult to dispose because a means for automatically recognizing the type of treatment instrument is built in.

  Incidentally, in the treatment apparatus currently handled by the applicant, the arrangement of the treatment instrument with respect to the treatment apparatus main body is set in advance on the substrate, and the surgeon cannot arbitrarily rearrange the treatment instrument at the treatment site. Is. In addition, although the technology of Patent Document 3 has become a right, even if it is an improved product related to a patent, the user's willingness to purchase has declined due to the economic depression that is said to occur once in 100 years, which originated from the Lehman shock since last year. This is a situation where the cost of the identification member is not acceptable. Therefore, an improvement has been desired in which the placement of therapeutic instruments can be rearranged by a further inexpensive and simple method.

JP 2001-178754 A Japanese Patent Publication No. 3-34345 Japanese Patent No. 4037650

  The problem to be solved is to provide a dental treatment apparatus that can freely set the position of the treatment instrument with respect to the treatment apparatus main body at a low cost with a simple configuration in view of the conventional problems.

  In a dental treatment apparatus in which various treatment instruments that operate using electricity, water, air, etc. as a medium are detachably attached to a treatment apparatus main body composed of a doctor table and an instrument hanger via a joint hose, , Various types having a supply circuit for supplying only a necessary working medium corresponding to the treatment instrument, a connection terminal for connecting the treatment instrument at one end, and a connection terminal for connecting to the treatment apparatus main body at the other end A working hose supply setting means for selectively setting supply of various working media to the treatment instrument arranged at an arbitrary position and supplying only a working medium necessary for the operation of the treatment instrument; A working medium supply control unit; a supply circuit capable of supplying various working media corresponding to any of the various therapeutic instruments; and a reading unit for reading the working medium supply setting means. Includes, and is characterized in that the selecting supply only working medium required for treatment instrument which is arranged at an arbitrary position by recognizing by the reading means to the working medium supply setting means.

  In addition, the working medium supply setting means is configured as a locking type or a card type, or provided at a connection terminal that connects the treatment instrument and the joint hose, and the reading means for reading this is a contact type sensor or a light reflection type. It is a non-contact type consisting of a type sensor or a light transmission type sensor, and is provided on the front surface of the treatment apparatus body or in the vicinity of the treatment apparatus body. Further, the working medium supply setting means is configured integrally with the treatment apparatus main body, and the setting can be switched by a dial type.

  The dental treatment apparatus according to the present invention is provided with working medium supply setting means, and by providing reading means for reading the working medium supply setting means, the arrangement position of various treatment instruments can be arbitrarily set with respect to the main body of the treatment apparatus. Therefore, the treatment instrument can be installed at a position desired by the operator without opening a cover that is usually provided so as to cover the upper surface of the doctor table, so that the burden on the operator is reduced. In addition, since the working medium supply setting means can supply only the necessary working medium corresponding to the type of the therapeutic instrument, the joint hose connecting the therapeutic instrument supplies only the necessary working medium corresponding to the type of the therapeutic instrument. Only the supply circuit to be built needs to be incorporated, and a simple and inexpensive configuration can be achieved.

  Since the reading means for reading the working medium supply setting means is provided on the treatment apparatus main body, on the front surface thereof, or in the vicinity thereof, it can be visually confirmed that the working medium supply setting means and the instrument hose are paired. Can be prevented. Furthermore, the working medium supply setting means can be configured as a lockable or card type that can be inserted and removed, or can be integrated with the reading means to be a dial type switching system. In addition, since the working medium supply setting means can be prevented from being connected by connecting the treatment instrument and the joint hose to each other, it is easy to install the treatment instrument at an arbitrary position. Furthermore, a contact type sensor or a non-contact type sensor composed of a light reflection type sensor or a light transmission type sensor is provided on the reading means for detecting the type of the treatment instrument placed on the front surface of the treatment apparatus or on the front surface thereof or in the vicinity thereof. Therefore, there is an advantage that it is possible to determine whether the connection is correct or not by the detection signals transmitted from these sensors.

FIG. 4 is a perspective view in which reading means is provided in the vicinity of an instrument hanger. FIG. 5 is a perspective view showing a connection between a treatment instrument and a joint hose. (A) and (b) are perspective views of a dial type (non-contact type) working medium supply setting means, (c) is a view showing the back side, and (d) is a side view. (A) is a side view of the key type (locking type) of the working medium supply setting means, (b) is a side view with the means attached to the main body of the treatment apparatus, (c) is the front view, and (d) (e ) Is a perspective view of the same. (A) is the side view which attached the dial type (cylinder lock type) contact type sensor of the working medium supply setting means to the treatment apparatus main-body part, (b) (c) is a figure which shows the perspective view. It is a figure of the example which provided the reading means in the front surface of the instrument hanger. It is a figure of the example which provided the reading means in the doctor table front surface. It is a figure of the example which provided the reading means in the vicinity of the doctor table. FIG. 4 is a diagram showing a working medium supply circuit.

  The working medium supply setting means is a locking type or a card type for the purpose of making it possible to freely and easily set the arrangement position of the treatment instrument with respect to the treatment apparatus main body, and to make it easy to handle, simple and inexpensive. This was realized at a low cost by providing it integrally with the main body of the treatment apparatus and the reading means of the working medium supply setting means.

  The embodiment of the present invention is a dental treatment in which various treatment instruments that operate using electricity, water, air or the like as a medium are detachably attached to a treatment apparatus main body composed of a doctor table and an instrument hanger via a joint hose. In the apparatus, as shown in FIG. 1, various treatment instruments 3 as shown in FIG. 2 are hooked on an instrument holding portion 2 provided on the front surface of the instrument hanger 1, and the treatment instrument 3 and the joint hose 4 and between the joint hose 4 and the treatment apparatus main body are connected via a connection terminal 5, respectively. Each connection terminal 5 can be supplied with only a necessary working medium such as electricity, water, air, etc. for operating the treatment instrument 3 corresponding to the type of the treatment instrument 3 connected from the treatment apparatus main body side. A minimum supply circuit (not shown) is incorporated. Further, the connecting terminal 5 is provided with an identification means 9 to be described later for identifying the type of the treatment instrument 3.

  On the other hand, as shown in FIG. 1, the instrument hanger 1 is provided with a working medium supply setting means 6, and in order to recognize this working medium supply setting means 6, the type of the treatment instrument 3 as shown in FIG. Correspondingly, there is provided a dial-type non-contact type sensor comprising an identification means 9 that rotates and switches the knob 11 of the selection means 10, and a reading means 8 for reading the identification means 9 is provided on the instrument hanger 1 side. Yes.

  The identification means 9 for recognizing this working medium supply setting means 6 is a non-contact sensor lock type (key type) working medium supply setting provided with identification means 9 corresponding to the type of treatment instrument 3 as shown in FIG. The means 6 is prepared for each of the various treatment instruments 3, and the type of the treatment instrument is read by the reading means 8 provided on the treatment apparatus body 7 side simply by inserting it into the treatment apparatus body 7 side, and the working medium is supplied. It can be set. Further, as shown in FIG. 5, a cylinder type contact sensor of a dial type that switches by rotating the knob 11 of the selection means 10 may be used. Further, the non-contact sensor lock type (key type) working medium supply setting means 6 provided with the identification means 9 corresponding to the type of the treatment instrument 3 may be a card type (not shown). In the card type, the type of the therapeutic instrument is written on the card, and the type of the therapeutic instrument can be read by the reading means provided on the therapeutic apparatus main body 7 side simply by inserting it into the therapeutic apparatus main body 7 side. This is a known technique.

  Note that the identification means 9 of the working medium supply setting means 6 in FIG. 4 is an example of a light reflection type sensor, and has identification means 9 formed by one or a plurality of through holes or recesses. The positions and number of the through holes and the recesses are unique depending on the type of treatment instrument. In this light reflection type sensor, light irradiated from a light reflection detection device, which is a reading means 8 provided on the treatment device main body 7 side, is reflected in a concave portion, and light is received through a through hole and is not reflected. This is a known technique that can identify the type of the treatment instrument 3 based on the position and number of reflected light sensed by the head side.

  On the other hand, in the case of a light transmission type sensor, one or more through holes or recesses are formed in the identification means 9, and these through holes and recesses are inherently different in position and number depending on the type of the treatment instrument 3. . In this light transmission type sensor, the light irradiated from the light transmission detection device, which is the reading means 8 provided on the treatment device main body 7 side, is blocked by the concave portion, and is received by the light passing through the through hole and not reflected. This is a known technique that can identify the type of treatment instrument based on the position and number of transmitted light sensed by the head side.

  Further, as the above identification method, as in FIG. 5, by rotating the knob 11 of the selection means 10, the unevenness of the identification means can be identified by identifying the working medium necessary for various treatment instruments by signal reading with a micro switch (not shown). Is possible.

  The working medium supply setting means 6 may be integrated with the treatment apparatus main body 7. The reading means 8 for reading the working medium supply setting means 6 is the treatment apparatus main body 7 as shown in FIG. It may be provided on the front surface of the instrument hanger 1 or may be provided in the vicinity of the instrument hanger 1 as shown in FIG. Further, as shown in FIG. 7, it may be provided on the front surface of the doctor table 12 which is the main body of the treatment apparatus, or as shown in FIG.

  Alternatively, the light reflection type sensor may be identified by a magnetic sensor using a Hall element on the reading means 9 side and a magnet provided on the working medium supply setting means 6 side. Moreover, you may identify by providing a barcode identification means in a connection terminal using barcode readers, such as a laser scan and a camera scan. This bar code identification means can be effectively used as an example of the non-contact type identification means 9 on the circumference of the connection terminal 5 connecting the treatment instrument 3 and the joint hose 4 shown in FIG.

  With the above configuration, the dental treatment apparatus according to the present invention does not need to operate the environment setting such as the placement position of the treatment instrument and the selection and supply of the working medium with the panel switch on the liquid crystal screen unlike the conventional example. Is easy.

  Next, using the working medium supply circuit diagram shown in FIG. 9, the working medium supply setting means 6A to 6E set arbitrary positions at which the various treatment instruments 21 to 25 are disposed on the treatment device main body 7 side. A specific example of a circuit that supplies only the necessary working medium corresponding to the types of the treatment instruments 21 to 25 connected to the treatment apparatus main body 7 by the working medium supply setting means 6 will be described. For convenience of explanation, the treatment device has one syringe, two air turbine handpieces, one micromotor handpiece, and one ultrasonic scaler connected to the treatment device main body 7 via the joint hose 4. Shall.

Example 1: When the syringe 21 is attached to the treatment device main body 7 “When the key type (FIG. 4) working medium supply setting means 6A is used”
In this case, as an example, in the instrument hanger 1 of the treatment apparatus main body 7, various treatment instruments 21 to 25 are arranged at positions A, B, C, D, E from the chair side (left side in FIG. 1). Shall. In this state, by inserting the working medium supply setting means 6A (in the case of the key type in FIG. 4) necessary for the operation of the syringe into the reading means 8A corresponding to the placement position A of the instrument hanger 1, the “positioning position A The syringe 21 is placed and set in the location of “”, and thereby the working medium supply setting circuit 26 (chip air supply circuit ON, water supply circuit ON, heating operation power supply circuit ON, optical lamp ( Lighting) operating power supply circuit ON) is set, and a working medium necessary for operating the syringe 21 is supplied. Similarly, the other various treatment devices 22 to 25 can be easily set and necessary for various treatment devices 22 to 25 by inserting the working medium supply setting means 6B to 6E corresponding to the various treatment devices 22 to 25. A working medium can be selected and supplied.

Example 2: When the syringe 21 is attached to the main body of the treatment device “When the dial type (FIGS. 3 and 5) working medium supply setting means 6A is used”
In this case, as an example, in the instrument hanger 1 of the treatment apparatus main body 7, various treatment instruments 21 to 25 are arranged at positions A, B, C, D, E from the chair side (left side in FIG. 1). The working medium supply setting means 6A to 6E for identifying the working medium of the various treatment instruments 21 to 25 corresponding to the front surfaces of the instrument holding portions 2 of the instrument hanger 1 are already read means 8A to 8E. They are installed integrally with each other. In this state, the syringe 21 is mounted at the arrangement position A, and the knob 11 of the selection means 10 (FIGS. 3 and 5) of the working medium supply setting means 6A at the arrangement position A is rotated. Thereby, the syringe 21 is arranged and set at the location of the arrangement position A, and the working medium supply circuit 26 (chip air supply circuit ON, water supply circuit ON, heating operation power supply circuit ON, necessary for operating the syringe 21, An optical lamp (lighting) operating power supply circuit ON) is set, and a working medium necessary for operating the syringe 21 is supplied. Similarly, the other various treatment devices 22 to 25 can be easily operated by rotating the knob 11 of the selection means 10 of the working medium supply setting means 6B to 6E corresponding to the various treatment devices 22 to 25. 25 configuration settings and required working media can be selected and supplied.

Example 3: When the syringe 21 is attached to the main body of the treatment device “When the working medium supply setting means 6A is provided at the connection terminal 5 between the treatment instrument 3 and the joint hose 4”
In this case, as an example, in the instrument hanger 1 of the treatment apparatus main body 7, various treatment instruments 21 to 25 are arranged at positions A, B, C, D, E from the chair side (left side in FIG. 1). Shall. In this state, each of the working medium supply setting means 6A to 6E provided with the identification means 9 corresponding to the light reflection type sensor on the circumference of the connection terminal 5 which is a connection portion between the treatment instrument 3 and the joint hose 4 shown in FIG. Prepare for each treatment device.

  Further, each of the reading means 8A to 8B is provided in the instrument holding part 2 for holding the connection terminal 5 of the treatment instrument 3. The syringe 21 (therapeutic instrument 3) is held on the circumference of the syringe 21 (therapeutic instrument 3) by holding the syringe 21 (therapeutic instrument 3) in the instrument holder 2 where the reading means 8A for the arrangement position A is installed. The means 9 is read by the reading means 8A, and the syringe 21 is arranged and set at the location of “arrangement position A”. Further, the working medium supply circuit 26 (chip air supply circuit ON, water supply circuit ON, A heating operation power supply circuit ON and an optical lamp (lighting) operation power supply circuit ON) are set, and a working medium necessary for operating the syringe 21 is supplied. Similarly, the other treatment devices 21 to 25 use the various treatment devices 21 to 25 provided with the identification means 9 so that the arrangement and setting of the various treatment devices 21 to 25 corresponding to the various treatment devices 21 to 25 are necessary. Only the working medium can be supplied.

Application example: Application to the maintenance of a therapeutic instrument This example is a working medium supply in which an identification means 9 corresponding to a light-reflective sensor is provided on the circumference of a connection terminal 5 which is a connection part between a therapeutic instrument 3 and a joint hose 4 By using the setting means 6 and causing the identification means 9 to recognize the number of times the therapeutic instrument 3 is used, it is possible to notify the operator of the maintenance time.

  As described above, the dental treatment apparatus according to the present embodiment is not configured to automatically recognize the type of the treatment instrument unlike the conventional treatment apparatus. Therefore, the malfunction due to the poor electrical contact of the electric circuit is eliminated, and the joint hose is used for the treatment instrument. Since a supply circuit that supplies only the minimum required working medium corresponding to the type is built in, it can be provided at a low price with a simple configuration that is small, light and easy to use. This also allows the joint hose to be disposable.

  Furthermore, in the conventional dental treatment apparatus, the treatment apparatus main body cover that covers the upper surface of the treatment apparatus main body is opened to set the treatment instrument. In the present invention, the working medium supply setting is performed without opening the main body cover. Since the means can be identified by the reading means, the treatment instrument can be set in correspondence with the working medium supply setting means, and erroneous connection is eliminated. In addition, the treatment instrument can be freely selected and set at a convenient position simply by replacing the working medium supply setting means, so that the treatment instrument can be placed at a position where it can be easily treated by the operator and the burden on the operator is reduced. Is done. In addition, it is possible to reduce the annoyance of setting various treatment instruments by operating panel switches on a liquid crystal screen.

1 Instrument hanger
2 Instrument holder
3 Treatment device
4 Joint hose
5 Connection terminal
6 Working medium supply setting means
7 Treatment device body
8 Reading means
9 Identification means
10 Selection method
11 Knob
12 Doctor table
20 Working medium supply controller
21 syringe
22, 24 Turbine
23 Micromotor
25 Scaler
26 Working medium supply setting circuit

Claims (7)

In a dental treatment device in which various treatment instruments that operate using electricity, water, air, etc. as a medium are detachably attached to a treatment device main body composed of a doctor table and an instrument hanger via a joint hose,
Various therapeutic instruments,
Various types having a built-in supply circuit for supplying only a necessary working medium corresponding to the treatment instrument, a connection terminal for connecting the treatment instrument at one end, and a connection terminal for connecting to the treatment apparatus main body at the other end A joint hose,
A working medium supply setting means for selectively setting the supply of various working media to the therapeutic instrument arranged at an arbitrary position and supplying only the working medium necessary for the operation of the therapeutic instrument;
A working medium supply control unit;
A supply circuit capable of supplying various working media corresponding to any of the various treatment instruments;
Reading means for reading the working medium supply setting means,
Recognizing the working medium supply setting means by the reading means, only a necessary working medium is selectively supplied to a treatment instrument arranged at an arbitrary position.   2. The dental treatment apparatus according to claim 1, wherein the working medium supply setting means is a locking type or a card type that can be inserted into and removed from the reading means.   The dental treatment apparatus according to claim 1, wherein the working medium supply setting means is a dial type in which the reading means is configured integrally with a treatment apparatus main body.   The dental treatment apparatus according to claim 1, 2 or 3, wherein the reading means for reading the working medium supply setting means is provided on the front surface or in the vicinity of the doctor table.   5. The dental treatment apparatus according to claim 1, wherein the reading means for reading the working medium supply setting means is provided on the front surface of the instrument hanger or in the vicinity thereof.   2. The dental treatment apparatus according to claim 1, wherein the working medium supply setting means is provided at a connection terminal for connecting a treatment instrument and a joint hose.   The dental treatment apparatus according to claim 1, wherein the reading unit includes a non-contact type sensor or a contact type sensor.

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