WO2016039332A1 - 技工用重合装置 - Google Patents
技工用重合装置 Download PDFInfo
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- WO2016039332A1 WO2016039332A1 PCT/JP2015/075452 JP2015075452W WO2016039332A1 WO 2016039332 A1 WO2016039332 A1 WO 2016039332A1 JP 2015075452 W JP2015075452 W JP 2015075452W WO 2016039332 A1 WO2016039332 A1 WO 2016039332A1
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- WIPO (PCT)
- Prior art keywords
- polymerization
- lid
- opening
- light source
- light
- Prior art date
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/003—Apparatus for curing resins by radiation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
- A61C1/0007—Control devices or systems
- A61C1/0015—Electrical systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0006—Production methods
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/12—Tools for fastening artificial teeth; Holders, clamps, or stands for artificial teeth
Definitions
- the present invention relates to a technical polymerization apparatus for curing a photocurable material used in the field of dentistry, particularly in the field of dental technicians, and a method for controlling the technical polymerization apparatus.
- a photocurable material sometimes referred to as “polymerized material”.
- a shape is formed before being cured, and then the shape is determined by irradiating with light and then curing.
- the apparatus which irradiates light in order to harden the said photocurable material is a polymerization apparatus.
- the temporary polymerization apparatus is a polymerization apparatus that performs partial curing to avoid deformation during operation of the stacked portions when the materials are stacked.
- a manufacturer holds a dental prosthesis in the middle of preparation and irradiates light to a necessary site. Thereby, partial polymerization can be easily performed in a short time (for example, Patent Documents 1 and 2).
- This polymerization apparatus is an apparatus for polymerizing the whole as a finish after laminating all the materials.
- a pre-polymerization dental prosthesis produced in a chamber is installed and a closed space is formed by closing a door (lid), etc., and then the entire dental prosthesis is irradiated with light.
- a dental prosthesis before polymerization is installed on a rotary table, and polymerization may be performed by irradiating light while rotating (for example, Patent Document 3).
- Patent Document 4 discloses a polymerization apparatus in which a temporary polymerization apparatus is detachably disposed next to the polymerization apparatus for convenience.
- the polymerization apparatus described in Patent Document 4 includes both, but the main polymerization apparatus and the temporary polymerization apparatus are arranged separately adjacent to each other, and are not greatly different from being provided individually.
- problems such as space being taken by arranging two superposition
- the two types of polymerization apparatuses have different external shapes, light irradiation ranges, and light intensities, it has not been possible to simply combine them.
- an object of the present invention is to provide a technical polymerization apparatus capable of carrying out one of both the prepolymerization and the main polymerization with an apparatus. Moreover, the control method of such a polymerization apparatus for technical purposes is provided.
- the present invention relates to a technical polymerization apparatus for curing a photocurable material used for a dental prosthesis, which includes a plurality of light sources having at least two optical axes and a light source covering and forming a polymerization space inside the light source. And a lid that switches between the formation of the opening communicating with the inside and outside of the polymerization space and the closing of the opening, a sensor that detects the formation of the opening by the lid and the closing of the opening, and a signal received from the sensor to form the opening.
- the present invention also relates to a technical polymerization apparatus for curing a photocurable material used for a dental prosthesis, which comprises a plurality of light sources having at least two optical axis directions, a light source covering the polymerization space inside the light source.
- the light source in two or more directions different in the direction of the optical axis is turned on, and in the posture in which the opening is formed, the posture in which the opening is closed
- the light source can be lit with high energy and lit with low energy, and when the switch arranged outside the space surrounded by the lid is pressed, the control means is operated by the lid. It may be determined that the light source should be turned on with low energy in the posture in which the opening is formed, and that the light source should be turned on with high energy in the posture in which the opening is closed by the lid.
- the light irradiation for temporary polymerization and the light irradiation for main polymerization are performed in one This can be done in the device. Therefore, the light source can be shared between the pre-polymerization and the main polymerization. Further, since it is not necessary to prepare the temporary polymerization apparatus and the main polymerization apparatus separately, space saving can be achieved.
- FIG. 1A is an external perspective view of the technical polymerization apparatus 10 in a posture in which the opening is closed
- FIG. 1B is an external perspective view of the technical polymerization apparatus 10 in a posture in which the opening is formed.
- FIG. 2A is a side view of the technical polymerization apparatus 10 in a posture in which the opening is closed
- FIG. 2B is a side view of the technical polymerization apparatus 10 in a posture in which the opening is formed.
- 1 is an exploded perspective view of a technical polymerization apparatus 10.
- FIG. It is sectional drawing of the superposition
- FIG. 6A is a diagram illustrating the operation panel 22, and FIG. 6B is a diagram illustrating the operation panel 22 '. It is sectional drawing explaining the scene which performs temporary superposition
- FIG. 15A is a cross-sectional view illustrating another example of the technical polymerization apparatus 30, and FIG. 15B is a cross-sectional view illustrating still another example of the technical polymerization apparatus 30 '.
- FIG. 15A is a cross-sectional view illustrating another example of the technical polymerization apparatus 30, and
- FIG. 15B is a cross-sectional view illustrating still another example of the technical polymerization apparatus 30 '.
- FIG. 1 is an external perspective view of the technical polymerization apparatus 10 according to the first embodiment
- FIG. 1A is a posture in which the lid 25 is closed and the opening that communicates the inside and the outside is closed
- 2 is a side view of the technical polymerization apparatus 10
- FIG. 2 (a) is the same posture as FIG. 1 (a)
- FIG. 2 (b) is the same posture as FIG. 1 (b).
- FIG. 3 is an exploded perspective view of the technical polymerization apparatus 10 and shows the lid 25 separately.
- 4 is a cross-sectional view of the technical polymerization apparatus 10 cut in the vertical direction along the line indicated by IV-IV in FIG. Accordingly, FIG.
- FIG. 4 shows a cross section of the technical polymerization apparatus 10 in a posture in which the lid 25 is closed and the opening for communicating inside and outside is closed.
- FIG. 5 shows a posture in which an opening for opening and closing the lid 25 is formed from the same viewpoint as that in FIG.
- FIGS. 4 and 5 at least a part of a surface to be a cut surface is hatched. However, there are some surfaces that are not hatched for easy viewing.
- the technical polymerization apparatus 10 includes a main body 11 and a lid 25.
- the main body 11 is a member on which main members of the technical polymerization apparatus 10 are arranged, and the lid 25 is arranged so as to cover a part of the main body 11 from above, and is polymerized in a space surrounded by the main body 11 and the lid 25. Is done.
- the main body 11 includes a base body 12, a turntable 13, a light source member 14, and control means 19.
- the configuration of the technical polymerization apparatus 10 will be described.
- the technical polymerization apparatus 10 is provided with other known devices (for example, a power source, an electric circuit, an electric wiring, etc.) for functioning as the apparatus.
- the base 12 is a member constituting the outer shell of the main body 11, and most of the members constituting the technical polymerization apparatus 10 are arranged inside and outside the base 12. Therefore, the base body 12 is formed in a hollow box shape, and the constituent members can be arranged inside and outside the base body 12.
- the base 12 is provided with an operation panel disposing portion 12a, a polymerization space forming portion 12b, and a lid holding portion 12c from one end side to the other end side on the upper surface side.
- the operation panel arrangement unit 12a is a part where the operation panel 22 of the control means 19 is arranged. Since the operation panel 22 is provided to the user, it is preferable that the operation panel arrangement portion 12a is arranged on the user side (front side, left side of FIG. 2A).
- the polymerization space forming portion 12b is a portion where a space for polymerization (polymerization space) is formed thereon, and in this embodiment, the turntable 13 is disposed.
- the dental prosthesis 1 to be polymerized is placed on the turntable 13 and irradiated with light (see FIG. 8).
- the lid holding portion 12c has a shaft that rotates the lid 25 when the lid 25 is held on the main body 11 and the lid 25 is opened and closed to form an opening that communicates the inside and outside of the lid 25 and to close the opening. It is. Therefore, in this embodiment, the lid holding portion 12 c has a bearing 12 d that receives the rotation shaft 26 provided on the lid 25.
- the means for enabling opening and closing of the lid 25 is not limited to this, and other known means can be used. This includes, for example, a hinge.
- the turntable 13 is a member provided below a polymerization space (a temporary polymerization range and a main polymerization range) described later, and is rotated by a motor 13a, a rotary shaft 13b that can be rotated by the motor 13a, and a rotary shaft 13b.
- This is a member having a table-like mounting table 13c.
- the dental prosthesis 1 is placed directly on the turntable 13, especially during the main polymerization, or the dental prosthesis 1 is placed via the height adjusting means 2 which is a means for adjusting the height position. (See FIG. 8).
- an adjusting means for example, a block or plate-like member having a predetermined thickness, or a mechanism capable of moving the mounting table 13c itself up and down may be provided.
- the mechanism for moving the mounting table 13c up and down is not particularly limited, a form in which the rotary shaft 13b for rotating the mounting table 13c can be moved up and down is mentioned.
- the arrangement of the turntable 13 on the base 12 is performed as follows, for example. That is, the motor 13 a of the turntable 13 is included inside the base 12, and the mounting base 13 c appears exposed from the superposition space forming part 12 b of the base 12. Thereby, the dental prosthesis 1 disposed here can be rotated during the main polymerization, and further uniform curing (polymerization) is possible.
- the light source member 14 is a device that emits light for polymerizing and curing the resin used in the dental prosthesis.
- the light source member 14 includes a substrate 15 and a plurality of light sources 16, 17, and 18 disposed on the substrate 15.
- the substrate 15 is a plate-like member erected from between the polymerization space forming part 12 b and the lid holding part 12 c in the base 12.
- the substrate 15 of this embodiment is a form in which three pieces 15a, 15b, 15c are connected in order, and adjacent pieces are refracted and arranged.
- the piece 15 a arranged closest to the base 12 is erected upward from the base 12, and the piece 15 b extends from the tip, and further the piece 15 c extends from the tip.
- the pieces 15a, 15b, and 15c are refracted so as to cover the polymerization space forming portion 12b of the base 12 from above.
- the degree of refraction of the piece is determined by the direction in which the optical axes of the light sources 16, 17, and 18 arranged here should face. This direction will be described later when the light source is described.
- the plurality of pieces are formed by being refracted, but in addition, for example, the substrate is similarly configured to cover the overlapping space forming portion 12b from above by bending in a circular arc shape. Also good.
- polymerization space formation part 12b may be covered can apply a well-known form, for example, is also disclosed by patent document 3.
- the light sources 16, 17, and 18 are disposed on the pieces 15a, 15b, and 15c of the substrate 15, respectively, and the light sources 16, 17, and 18 are positioned so that light can be emitted to the overlapping space forming portion 12b side. It has been. Therefore, the light source 16, the light source 17, and the light source 18 are arranged so that their optical axes are different between the light source 16, the light source 17, and the light source 18. That is, the technical polymerization apparatus 10 is provided with a plurality of light sources having different irradiation directions (optical axes) (the optical axis directions are at least two directions).
- the “optical axis” means a direction with the highest luminance in the luminance distribution of light emitted from the light source. More details are as follows.
- the light source does not need to be one for each piece 15a, 15b, 15c, and a plurality of light sources may be arranged.
- the light source 16 arranged on the piece 15a has its optical axis directed substantially horizontally toward the polymerization space forming portion 12b (the main polymerization region of the polymerization space, VIIIa in FIG. 8).
- the angle formed by the optical axis with respect to the horizontal is preferably in the range of ⁇ 10 °.
- the sign of the angle formed is positive when the optical axis is directed downward, and negative when the optical axis is directed upward. More preferably, the angle formed by the light source 16 is less than 0 °. Thereby, it becomes easy to irradiate light to the undercut portion of the dental prosthesis having a complicated shape.
- the light source 17 disposed on the piece 15b is directed toward the polymerization space forming portion 12b (the main polymerization region of the polymerization space, VIIIa in FIG. 8) with the optical axis directed obliquely downward.
- the angle formed by the optical axis with respect to the horizontal is 45 ° ⁇ 15 °.
- the light source 18 arranged on the piece 15c is directed toward the polymerization space forming part 12b (the main polymerization region (VIIIa in FIG. 8) and the temporary polymerization region (VIIa in FIG. 7)) in the polymerization space with the optical axis facing downward. It has been.
- the angle formed by the optical axis with respect to the horizontal is 75 ° ⁇ 15 °. More preferably, it is 60 ° or more and less than 90 °.
- the angle is 75 ° ⁇ 15 °. More preferably, it is 60 ° or more and less than 90 °.
- the light emitted from the light source includes a wavelength necessary for polymerizing and curing the polymer material used for the dental prosthesis.
- the wavelength range in which such a photocurable material is cured is 300 nm or more and 520 nm or less, near ultraviolet, purple, blue, or white light is preferable.
- a typical example of the polymerized material is a resin material using camphorquinone as a photopolymerizable material.
- the wavelength of light for initiating polymerization of this material is about 470 nm.
- the light source that emits near ultraviolet rays has a peak wavelength in the range of 315 nm or more and less than 380 nm.
- the light source that emits purple light is 380 nm or more and less than 430 nm, and the light that emits blue light is 430 nm or more. It means having a peak wavelength in the range of less than 520 nm.
- the arrangement mode of the near ultraviolet, purple, blue, and white light sources is not particularly limited, and any one type may be used, or two or more types of light sources may be included.
- different types of light sources may be arranged on the pieces 15 a, 15 b, 15 c of the substrate 15.
- a purple light source and a blue light source can be arranged on one piece 15a, 15b, 15c.
- the number of the same kind of light sources to be arranged is not particularly limited, and may be one or plural.
- the kind and number of light sources arranged for each piece 15a, 15b, 15c of the substrate 15 may be changed, or all may be the same.
- the light sources 16, 17, and 18 may be any type of light source such as a xenon lamp or an LED, but it is preferable to use an LED from the viewpoints of wavelength characteristics of emitted light, light source lifetime, power consumption, and the like.
- the control means 19 is means for controlling each member provided in the technical polymerization apparatus 10 to exert a predetermined function.
- the control means 19 includes a control plate 20, a lid detection sensor 21, and an operation panel 22. Yes.
- the control plate 20 is means for receiving and calculating signals transmitted from the lid detection sensor 21 and the operation panel 22 and transmitting the results to the turntable 13, the light source member 14, and the operation panel 22 for control. Accordingly, the control plate 20 is electrically connected to the turntable 13, the light source member 14, the lid detection sensor 21, and the operation panel 22. The specific control performed will be described later.
- the control plate 20 is disposed inside the base 12 of the main body 11.
- the control board 20 can be configured by an electronic circuit, and includes, for example, a central operator (CPU) that actually performs calculation, a ROM that stores programs, a RAM that is used to store work areas and results, and the like. It has an interface for connection. Known hardware can be used as such hardware.
- CPU central operator
- ROM read-only memory
- RAM random access memory
- the lid detection sensor 21 is a sensor that detects the posture of the lid 25 and obtains information for determining the formation of the opening that connects the inside and the outside of the lid 25 and the closing of the opening. That is, the attitude of the lid 25 is detected and the information is transmitted to the control plate 20, and it is determined whether the control plate 20 has an opening communicating with the inside or outside of the lid or is closed, and based on the result.
- the light sources 16, 17, and 18 and the turntable 13 are controlled by selecting the light source to be turned on and calculating the turn-on time, and calculating whether the turntable 13 can be rotated.
- the sensor used here is not particularly limited, and examples thereof include a microswitch and a sensor that detects a position or rotation.
- the operation panel 22 is a means for the user to input his / her wishes, and operation switches and various displays are arranged.
- the operation panel 22 is an operation panel disposed outside the polymerization space surrounded by the lid 25.
- FIG. 6A shows an example of the operation panel 22.
- the operation panel 22 includes a main polymerization lighting time setting switch 22a, a temporary polymerization lighting start switch 22b, and a stop switch 22c.
- the main polymerization lighting time setting switch 22a in this embodiment, the setting of 0.5 minutes, 1 minute, 3 minutes, and 5 minutes from the left in FIG. 6A and the light source for the main polymerization can be turned on. .
- the light source for temporary polymerization is turned on in a predetermined time by pressing this switch.
- the operation panel 22 is provided with a remaining time display portion 22d for displaying the remaining time of light source lighting, and the remaining time of light source lighting is displayed by a bar graph.
- the input time and lighting start instruction are transmitted as information to the control board 20, and the control board 20 calculates the light source to be turned on and the lighting time so that the light sources 16, 17, 18 and the turntable 13 are turned on. Control.
- the operation panel 22 'of the other example can set the lighting time of the light source more finely. That is, the operation panel 22 'has a time setting switch 22'a for setting the lighting time in units of one second, and the set time is displayed on the time display unit 22'b. A start switch 22'c for starting lighting and a stop switch 22'd for stopping lighting are arranged.
- the lid 25 is a member that forms a polymerization space covering the dental prosthesis containing the material to be polymerized therein.
- the lid 25 is formed in a box shape in which one surface is an opening through the inside and outside. Then, by arranging the opening so as to cover the upper surface of the main body 11, a space surrounded by the lid 25 and the main body 11 is formed. At this time, as can be seen from FIG. 4, the inside of the lid 25 is included so as to cover the mounting table 13 c of the turntable 13 and the light source member 14. The edge of the opening is formed substantially the same as the shape of the upper surface of the main body 11. Thereby, leakage of light emitted from the light sources 16, 17, 18 can be suppressed.
- the lid 25 is provided with a rotating shaft 26 extending in a horizontal direction at one end of the opening at the end on the opening.
- the rotation shaft 26 is inserted into the bearing 12 d of the lid holding portion 12 c provided on the base 12, so that the lid 25 can rotate around the rotation shaft 26. Accordingly, as can be seen from the comparison between FIG. 1A and FIG. 1B, the comparison between FIG. 2A and FIG. 2B, and the comparison between FIG. 4 and FIG. While being held by the main body 11, it is possible to form an opening communicating with the inside and outside of the lid 25 and close the opening by rotating the end opposite to the rotation shaft 26 in the vertical direction.
- the posture when the opening is formed by closing the lid 25 and the opening is closed, the posture can be maintained when an arbitrary posture or the lid 25 is in a predetermined posture (for example, a posture for temporary polymerization).
- a mechanism may be provided. Thereby, it is not necessary to hold the lid 25 with a predetermined hand, and the convenience for the user is improved.
- Specific means for that purpose are not particularly limited, and examples thereof include a torque hinge and a spring hinge. Note that the opening formed by the lid 25 may be maintained at an arbitrary size. Also at this time, a torque hinge or a spring hinge can be used.
- the size of the opening formed by the lid 25 is preferably 100 mm or more in both length and width. Accordingly, it is possible to secure a size in which the user can easily put his / her hand in and out of the opening while holding the dental technical product in his / her hand.
- the lid 25 is provided with a light transmitting portion 27 that is a portion that transmits light to the wall 25a opposite to the end portion where the rotation shaft 26 is disposed.
- the wall 25a is a wall that is disposed so as to face the user of the technical polymerization apparatus 10 among the walls forming the lid 25. Thereby, the user can visually recognize the inside of the lid 25 through the light transmission part 27.
- the light transmitting portion 27 is configured by fitting a light transmitting plate into an opening provided in the wall 25a.
- the translucent plate is not particularly limited as long as it is transparent so that the inside of the lid 25 can be visually recognized. However, the light having a peak wavelength of the light sources 16, 17, and 18 is transmitted by 20% or less.
- the light is dimmed so that the light is transmitted at a rate (shields light of 80% or more).
- a black filter that attenuates light over all wavelengths or an orange filter that is complementary to the light sources 16, 17, and 18 can be used.
- it may be a magic mirror that transmits light having a peak wavelength of the light sources 16, 17, and 18 with a transmittance of 20% or less and reflects at least a part of the remaining 80%. Accordingly, even when the inside of the lid 25 is visually recognized through the light transmitting portion 27, glare caused by the light sources 16, 17, and 18 can be reduced, and the dental prosthesis can be easily seen. Even if the light transmitting portion 27 is in the closed position of the lid 25 (FIG. 4, the position in which the opening is closed) or in the open position of the lid 25 (FIG. 5, the position in which the opening is formed) It is preferable that the polymer is disposed at a position where a portion where polymerization is performed can be visually recognized.
- the inner surface of the lid 25 is a surface having a high reflectance in a portion other than the light transmission portion 27.
- the form of reflection is not particularly limited, and may be a regular reflection surface or a diffuse reflection surface.
- the lid 25 by rotating one end of the lid 25 up and down around the horizontal pivot shaft 26, the lid 25 opens and closes to form an opening that communicates the inside and the outside, and the opening is closed. showed that.
- gaps are formed on the left and right sides as well as on the front side (see Ib in FIG. 1B), and it is possible to work by inserting a hand from here, thereby improving workability.
- the present invention is not limited to this, and it is possible to form an opening that opens and closes and connects the inside and outside of the lid and closes the opening by providing the lid with a sliding door that can be opened or closed in the left-right direction. Good.
- a limit for opening the door to the maximum can be limited to an opening degree for temporary polymerization, or a mechanism for restricting (locking) the opening and closing of the door at the position for temporary polymerization can be provided.
- the user can automatically obtain the opening degree of the door necessary at the time of temporary polymerization, and the convenience is improved.
- FIG. 7 shows a diagram for explanation.
- Preliminary polymerization is a process of irradiating a part of a polymerized material arranged and arranged in the process of producing a dental prosthesis to polymerize the part. Therefore, in the preliminary polymerization, it is necessary to irradiate only the necessary part of the dental prosthesis and to irradiate the light while holding the dental prosthesis in the hand in order to finely adjust the position where the light is applied. is there. In such a case, the user can use the temporary polymerization mode of the technical polymerization apparatus 10.
- the temporary polymerization mode is automatically activated by setting the lid 25 to an open posture (post-polymerization mode posture) as shown in FIG. 7 and a posture in which an opening communicating the inside and outside of the lid 25 is formed.
- the control means 19 sets as follows when the lid 25 is in the temporary polymerization mode.
- the lid detection sensor 21 provided in the control means 19 detects the posture of the lid 25 and transmits a signal to the control plate 20.
- the control board 20 performs an operation and determines that this should be the pre-polymerization mode.
- the control plate 20 controls the mounting table 13c of the rotating table 13 so that the mounting table 13c does not rotate by restricting the rotation of the mounting table 13c. Further, the control plate 20 restricts the light source member 14 so that at least one of the light sources whose light axis intersects the superposition space forming portion 12b can be turned on, and the others cannot be turned on. That is, the light source is turned on in a part of the plurality of light sources (two or more directions) having different optical axis directions (the number of directions is smaller than that in the case where the lid is closed). ) To regulate. In this embodiment, for example, only the light source 18 can be turned on, and the other light sources 16 and 17 are restricted so that they cannot be turned on.
- the control plate 20 sets a time for lighting the light source 18 and counts down (counts up) the lighting time.
- the light source to be lit is preferably a light source at a position where it cannot be directly viewed in the posture in which the opening is formed by the lid 25. Thereby, safety can be improved.
- the user places the dental prosthesis 1 to be polymerized in the temporary polymerization region VIIa. Since this process is temporary polymerization, the dental prosthesis 1 is held by a user's hand directly or via a holder. In this state, the user presses the temporary polymerization lighting start switch 22b (see FIG. 6A) of the operation panel 22. As a result, only the light source 18 is turned on, and the dental prosthesis 1 is irradiated with light as shown in FIG. 7 at VIIb, and the light sources 16 and 17 remain off. At this time, as shown by VIIc in FIG. 7, the user can proceed with temporary polymerization while viewing the dental prosthesis 1 through the light transmitting portion 27 and confirming the actual light irradiation position.
- the light source 18 is turned off when a predetermined time elapses.
- the light source 18 since the light source 18 is used in the case of temporary superposition
- the light source 18 may be turned on brightly or darkly by adjusting energy for lighting. When polymerizing efficiently in a short time, it is lit with high energy.
- the light source 18 is configured to be lit for a predetermined time. However, in order to increase the degree of freedom of the temporary polymerization time, the light source 18 is lit when the switch is pressed, and the switch is released. You may comprise so that the light source 18 may turn off. In this case, in order to improve the operability of the switch, a rod-like or plate-like shape is formed on the inner side surrounded by the polymerization space forming portion 12b of the lid 25 and the base body 12 when the lid 25 is closed, which is a portion close to the temporary polymerization region VIIa.
- the switch 18, a sensor for detecting the insertion of the dental prosthesis 1 in a non-contact manner, or the rotary table 13 itself also serves as the switch, and the light source 18 may be turned on by pressing the mounting table 13 c. it can.
- an operation panel having a function related to temporary polymerization is disposed inside the cover 25 and the polymerization space forming portion 12b of the base body 12 when the cover 25 is closed. May be.
- a means serving as a mark may be provided.
- laser light can be emitted along the optical axis of the light source 18 or a mark can be given to the light transmitting portion 27.
- the dental prosthesis 1 is disposed in the temporary polymerization region VIIa and then the temporary polymerization lighting start switch 22b (see FIG. 6A) of the operation panel 22 is pressed.
- the dental prosthesis 1 may be disposed in the temporary polymerization region VIIa after the temporary polymerization lighting start switch 22b of the operation panel 22 is pressed.
- the time from when the temporary polymerization lighting start switch 22b is pressed to when the light source 18 is turned on is delayed, for example, by about 2 seconds, or the brightness at which the light source 18 is turned on is suppressed for 2 seconds (weak lighting). ) Can be controlled.
- region VIIa is taken.
- the lighting of the light source 18 when a plurality of light sources having different wavelengths are installed as the light source 18 (for example, blue and purple), it is possible to select only one of them depending on the used polymerization material. It may be possible (for example, only blue and purple only). Accordingly, unnecessary lighting of the light source can be prevented and waste can be eliminated. Or you may be comprised so that the kind of LED to light up can be switched so that it can match
- the lid 25 It may be controlled to turn off all the light sources by closing the lid 25 from the temporary polymerization posture (the posture in which the opening is formed by the lid 25), or may be controlled to keep the light source 18 on. Good. In the case where the lighting of the light source is maintained, the temporary polymerization operation can be resumed promptly when the lid 25 is opened again. Alternatively, the lid 25 can be closed and the light source can be turned off after a predetermined time has elapsed. It should be noted that the operation panel setting time (timer) can be reset by closing the lid 25.
- FIG. 8 shows a diagram for explanation.
- the main polymerization is an operation for finishing the placement of all the materials and irradiating the entire polymerized material with light to polymerize it. Therefore, in this polymerization, it is necessary to irradiate the entire dental prosthesis with light as much as possible and complete the polymerization over a certain period of time. In such a case, the user can use the main polymerization mode of the technical polymerization apparatus 10.
- the main polymerization mode is automatically activated by setting the lid 25 in a closed posture (main polymerization mode posture) so that the opening communicating with the inside and outside of the lid 25 is closed.
- the controller 19 sets as follows.
- the lid detection sensor 21 provided in the control unit 19 detects the attitude of the lid 25 and transmits a signal to the control plate 20.
- the control board 20 performs an operation and determines that this should be the main polymerization mode. By this determination, the control plate 20 enables the mounting table 13c of the rotating table 13 to rotate, and controls the mounting table 13c to rotate.
- control plate 20 enables all light sources to be lit with respect to the light source member 14. Thereby, the area
- the user arranges the dental prosthesis 1 to be polymerized in advance in the superposition region VIIIa. Since this process is a main polymerization, the dental prosthesis 1 is placed on the mounting table 13 c directly or via the height adjusting means 2. In this manner, the user presses the main polymerization lighting start switch 22a (see FIG. 6A) of the operation panel 22 in a posture in which the dental prosthesis 1 is placed on the mounting table 13c. Thereby, the light sources 16, 17, and 18 are turned on, and light is irradiated to the dental prosthesis 1 from a plurality of directions as indicated by the arrow VIIIb. At that time, the mounting table 13c is rotating. Therefore, it is possible to irradiate light without unevenness, and polymerization without unevenness is possible.
- the user can proceed with the main polymerization while viewing the dental prosthesis 1 through the light transmitting portion 27 and confirming the actual light irradiation position. Then, the light sources 16, 17, and 18 are turned off when the time set by the superposition lighting start switch 22a elapses.
- the light sources 16, 17, and 18 When a plurality of light sources having different wavelengths are installed as the light sources 16, 17, and 18 when the light sources 16, 17, and 18 are turned on (for example, blue and purple), only one of them depends on the polymerization material used. It may be possible to select to illuminate (e.g., only blue and violet only). Accordingly, unnecessary lighting of the light source can be prevented and waste can be eliminated.
- the light source may be turned on brightly or darkly by adjusting energy for lighting. When polymerizing efficiently in a short time, it is lit with high energy.
- FIG. 9 shows the flow of the control method S10 for the technical polymerization apparatus according to one example
- FIG. 10 shows the flow of the control method S20 for the technical polymerization apparatus according to another example.
- the control method S10 for the technical polymerization apparatus includes steps S11 to S19 as shown in FIG. Each process is as follows.
- Process S11 is a process in which the lid is closed and is in a standby state (lid closing / standby process).
- Step S12 is a step of determining whether or not the lid is open in the state of step S11 (lid open determination step). That is, it is determined whether or not the lid has been opened by the user. If the lid is not open, No is selected, and the process S11 is continuously maintained. On the other hand, if the lid is open, the process proceeds to step S13.
- Step S13 is a standby state process (lid open / standby process) with the lid open.
- Step S14 is a step of determining whether or not the temporary polymerization is started in the state of step S13 (preliminary polymerization start determination step), and determines whether or not the user has instructed the start of temporary polymerization. If there is an instruction to start temporary polymerization, Yes is selected, and temporary polymerization is started in step S19 (preliminary polymerization process). And it ends when the prepolymerization ends. On the other hand, when there is no temporary polymerization start command, No is selected and the process proceeds to step S15.
- the temporary polymerization start command is issued by the user pressing the temporary polymerization lighting start switch 22b of the operation panel 22, or by pressing the switch when the switch is disposed inside the cover 25. be able to.
- Step S15 is a step of determining whether the lid is closed (a lid closing determination step). In this process, it is assumed that the user sets a polymer object (dental prosthesis) and closes the lid. If the lid is not closed, No is selected and the process returns to step S14. On the other hand, if the lid is closed, Yes is selected, and the process proceeds to step S16 and waits with the lid closed (lid closing / waiting process).
- Step S17 is a step of determining whether or not the main polymerization is started in the state of step S16 (main polymerization start determination step), and determines whether or not the user has instructed the start of the main polymerization.
- step S18 main polymerization process
- step S16 main polymerization process
- the technical polymerization apparatus control method S20 includes steps S21 to S30 as shown in FIG. Each process is as follows.
- Process S21 is a process in which the lid is closed and is in a standby state (lid closing / standby process).
- Process S22 is a process of determining whether the lid is open in the state of process S21 (cover open determination process). That is, it is determined whether or not the lid has been opened by the user. If the lid is not open, No is selected and step S21 is maintained. On the other hand, if the lid is open, the process proceeds to step S23.
- Step S23 is a standby state process (lid open / standby process) with the lid open.
- Process S24 is a process for determining whether or not temporary polymerization is started in the state of process S23 (preliminary polymerization start determination process), and determines whether or not the user has instructed to start temporary polymerization.
- step S30 (preliminary polymerization process). And it ends when the prepolymerization ends.
- No is selected and the process proceeds to step S25.
- the temporary polymerization start command is issued by the user pressing the temporary polymerization lighting start switch 22b of the operation panel 22, or by pressing the switch when the switch is disposed inside the cover 25. be able to.
- Process S25 is a process for determining whether or not an instruction for starting the main polymerization has been issued (main polymerization start determining process), and it is determined whether or not an instruction for starting the main polymerization has been issued by the user. If there is a command to start the main polymerization, Yes is selected, and the process proceeds to step S26. On the other hand, if there is no command for starting the main polymerization in step S25, No is selected and the standby state in step S23 is maintained.
- the main polymerization start command can be given by the user pressing a switch provided on the operation panel 22 or 22 '.
- Process S26 is a process of temporary lighting (temporary lighting process).
- Temporary lighting here is a process in which the light source is turned on darkly, the light source that is turned on during temporary polymerization is turned on, or only a part of the light sources is turned on. This means that the light source is turned on with lower energy than that of the light source.
- This is a process in consideration of the convenience of confirming the position where light is irradiated by temporary lighting with the lid opened before starting the main polymerization.
- the user can set the superposition object (dental prosthesis) in view of the temporary lighting state. It is also possible to confirm that there is no disconnection or abnormality of the light source.
- the lighting is of the kind and intensity that the light source may be viewed directly.
- a light source containing a large amount of ultraviolet light is not turned on during temporary lighting.
- the product of the irradiance and the irradiation time is preferably 100 J / m 2 or less. If this is exceeded, it can be forcibly turned off. For example, when it is assumed that observation is performed visually for 10 seconds, the irradiance is 10 W / m 2 or less.
- provisional lighting time can be set with a timer with an operation panel within the range of the time to forcibly turn off and the irradiation time can be limited.
- Process S27 is a process of determining that the lid is closed after process S26 (cover closure determining process S27). Since this process requires that the lid be closed in the main polymerization, it is determined whether the lid is closed before the main polymerization is performed. In step S27, it is determined that the lid is not closed, and in step S29, the user is informed that the lid is not closed by voice or visual means, and step S27 is maintained. On the other hand, if the lid is closed, the process proceeds to step S28 (main polymerization process S28) and the main polymerization is performed. The polymerization is terminated when the polymerization is completed.
- the lid 25 is opened for some reason while the main polymerization is being performed, the temporary lighting process or the temporary polymerization mode is set, and the timer may be set to pause during that time. .
- the main polymerization can be resumed after correcting the problem noticed during the main polymerization.
- the present invention is not limited to this, and if the cover 25 is opened for some reason during the main polymerization, the timer can be turned off and the timer can be reset. This is very convenient when interrupting the main polymerization.
- FIG. 11 is a view for explaining a technical polymerization apparatus 10 ′ according to a modification, and is a view from the same viewpoint as FIG. 4.
- the light source member 14 ′ is applied to the technical polymerization apparatus 10 instead of the light source member 14.
- the other members are the same as those in the technical polymerization apparatus 10 and are therefore denoted by the same reference numerals and the description thereof is omitted.
- the light source member 14 ′ is a device that emits light for polymerizing and curing the polymer material used in the dental prosthesis.
- the light source member 14 ′ includes a substrate 15 ′ and a plurality of light sources 16, 17 and 18 disposed on the substrate 15 ′.
- the light sources 16, 17, and 18 are as described above.
- the substrate 15 ′ is a plate-like member erected from between the polymerization space forming part 12 b and the lid holding part 12 c in the base 12.
- the substrate 15 ′ of this embodiment is configured such that three pieces 15 ′ a, 15 ′ b, and 15 ′ c are sequentially connected, and adjacent pieces are rotatably connected. That is, as can be seen from FIG. 11, the piece 15′a arranged closest to the base 12 is erected upward from the base 12, and the tip 15′b is rotatable at the tip thereof by a rotary shaft 15′d. Further, a piece 15'c is connected to the tip of the piece 15'b so as to be rotatable by a rotation shaft 15'e.
- the inclination of the pieces 15'b and 15'c can be changed as represented by XIa and XIb in FIG. Therefore, the direction of the optical axis of the light sources 17 and 18 arranged here can be changed, and the direction of the optical axis can be adjusted as necessary.
- FIG. 12 is a view for explaining a technical polymerization apparatus 10 ′′ according to another modification, and is a view from the same viewpoint as in FIG. 5.
- the light transmitting portion 27 is compared to the technical polymerization apparatus 10 described above. Instead of this, a light transmitting portion 27 ′′ was applied.
- the other members are the same as those in the technical polymerization apparatus 10 and are therefore denoted by the same reference numerals and the description thereof is omitted.
- the light transmitting portion 27 ′′ of this example is disposed so as to hang down from the end of the substrate 15 that is closest to the user, and the light transmitting portion 27 ′′ is provided in the superposition space.
- the configuration of the light transmitting portion 27 ′′ itself is the same as that of the light transmitting portion 27 described above.
- the user can receive the light through the light transmitting portion 27 ′′ so that the eyes can be protected more reliably. Further, such a light transmitting portion 27 ′′ can be used as a mark of the temporary polymerization region VIIa (see FIG. 7).
- FIGS. 13 to 15 are views for explaining the technical polymerization apparatus 30 according to the second embodiment. Each figure is a figure from the same viewpoint as FIG.
- the technical polymerization apparatus 30 is an example in which a condenser lens 31 is disposed on the light output side of the light source 18 with respect to the technical polymerization apparatus 10 described above.
- the other members are the same as those in the technical polymerization apparatus 10 and are therefore denoted by the same reference numerals and the description thereof is omitted.
- a condensing lens 31 is provided on the light output side of a light source (light source 18 in this example) that lights in the temporary polymerization mode.
- a light source light source 18 in this example
- the light emitted from the light source 18 is condensed by the condensing lens 31 at the time of pre-polymerization, and the concentrated strong light is irradiated to the dental prosthesis 1.
- temporary polymerization can be performed efficiently.
- the condensing lens 31 is excluded from the light output side of the light source 18 in the main polymerization mode, or the light is collected. It is preferable to arrange so that it does not shine.
- Specific means for that purpose are not particularly limited, but examples are shown in FIG. 13, FIG. 14, FIG. 15 (a), and FIG. 15 (b).
- FIG. 13 is an example in which the condenser lens 31 is directly attached to and detached from the piece 15c. In this case, the condenser lens 31 is manually attached to and detached from the piece 15c of the substrate 15 as necessary.
- FIG. 14 is an example in which the stand 32 with the condensing lens 31 disposed at the tip is placed on the mounting table 13 c and the condensing lens 31 is disposed on the light output side of the light source 18. This is also done manually by placing the stand 32 on the mounting table 13c as necessary.
- FIG. 15A is an example in which the condenser lens 31 is held inside the lid 25 and the condenser lens 31 is automatically moved by a link mechanism (not shown). That is, as shown in FIG.
- the condenser lens 31 in the temporary polymerization mode posture, the condenser lens 31 is arranged on the light output side of the light source 18 and condenses the light from the light source 18, but the arrow in FIG.
- the lid 25 is closed as shown by XVa (the main polymerization mode is set)
- the condensing lens 31 is moved by the link mechanism as shown by the arrow XVb in FIG. Excluded from.
- FIG. 15B is an example in which the degree of light collection is changed by changing the relative distance between the condenser lens 31 and the light source 18. That is, as shown in FIG.
- the distance between the condensing lens 31 and the light source 18 condenses the light from the light source 18 when in the temporary polymerization mode, but it is manually or as shown by an arrow in FIG.
- the lid 25 is closed as shown by XVc (the main polymerization mode is set)
- the light source member 14 is automatically raised as shown by the arrow XVd in FIG.
- the distance to 18 is changed. Thereby, condensing can be cancelled
- the example of moving the light source member 14 has been described here, the same effect can be obtained by moving the condenser lens 31.
- the light source 18 is collected in the temporary polymerization mode and the light collection is canceled in the main polymerization mode.
- a diffusion lens is disposed and the light diffusion lens is used in the main polymerization mode. It may be a mode of canceling this in the mode.
- the light source 18 is collected as a light source having a characteristic of condensing, and in the temporary polymerization mode, this is used as it is to perform temporary polymerization.
- a light diffusing lens is arranged on the light output side of the light source 18 and wide. What is necessary is just to irradiate light to the dental prosthesis 1 in the range. The same concept as described above can be applied to a specific mode of movement of the light diffusion lens.
- a reflector may be attached to the light source.
- FIG. 16 shows a diagram for explaining the technical polymerization apparatus 40 according to the third embodiment. This figure is the same view as FIG.
- the technical polymerization apparatus 40 is an example in which a protective plate 41 is disposed on the light output side of the light source member 14 with respect to the technical polymerization apparatus 10 described above.
- the other members are the same as those in the technical polymerization apparatus 10 and are therefore denoted by the same reference numerals and the description thereof is omitted.
- the protective plate 41 is a plate-like member arranged on the light-emitting side of the light source member 14 and is a plate-like member arranged between the polymerization space and the light source member 14.
- the shape is not particularly limited, it can be a shape along the shape of the substrate 15 of the light source member 14 as in this embodiment.
- the protection plate 41 is made of a light-transmitting member so that light from the light sources 16, 17, and 18 can be transmitted. Since at least light from the light sources 16, 17, and 18 only needs to be transmitted, only part of the light that is emitted from the light sources 16, 17, and 18 may be transparent, or the whole is transparent. May be.
- the protection plate 41 can protect the light sources 16, 17, and 18 from physical contact with dirt, a dental prosthesis, or the like.
- the protective plate 41 is not particularly limited as long as it is a translucent member, but a lens may be provided here for the purpose of diffusing or condensing light from the light sources 16, 17, and 18.
- the translucent member may be a resin member having two or more layers of different materials on the light source 16, 17, 18 side and the opposite side (polymerization space side). According to this, among the translucent members, even if the side exposed to the polymerization space is soiled by the material to be polymerized, only the layer on the polymerization space side can be replaced, and the amount of light can be easily attenuated. Can be prevented.
- FIG. 17 is a diagram illustrating a technical polymerization apparatus 40 ′ according to a modification of the technical polymerization apparatus 40.
- the technical polymerization apparatus 40 ′ includes a blower 42, and blows air between the substrate 15 of the light source member 14 and the protective plate 41 as indicated by a straight arrow in FIG. 17. Thereby, the light sources 16, 17, and 18 can be cooled, and the lifetime of the light source can be improved.
- the light source member 14 is covered from the side opposite to the protection plate 41 side so as to cover the surface other than the light source surface of the light source member 14 and the protection plate 41.
- a box-shaped cover 43 may be provided. Thereby, the wind from the blower 42 can be efficiently passed between the substrate 15 and the protection plate 41.
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Manufacturing & Machinery (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
Description
仮重合装置は材料を積層したときに当該積層した一部について作業中における変形を避けるため部分的な硬化をさせる重合装置である。仮重合装置を用いた仮重合では作製者が作製途中の歯科補綴物を手に持ち、必要な部位へ光を照射する。これにより部分的な重合を短時間で簡易におこなうことができる(例えば特許文献1、2)。
本重合装置は材料を全て積層した後に仕上げとして全体をムラなく重合させる装置である。通常はチャンバー(容器)内に作製した重合前の歯科補綴部を設置し扉(フタ)を閉める等して閉空間を形成してから歯科補綴物の全体に光を照射する。作製する歯科補綴物の大きさや細かさにもよるが数分に亘って光が照射され、確実な重合が行われる。また効率よく重合を行う観点から回転テーブル上に重合前の歯科補綴物が設置され、回転しながら光を照射して重合が行われることもある(例えば特許文献3)。
また、2種類の重合装置ではそれぞれ外形や光の照射範囲、光の強さが異なるため、これらを単純に1つに合わせることもできなかった。
本形態では、基体12はその上面となる側に、一端側から他端側に向けて操作盤配置部12a、重合空間形成部12b、及びフタ保持部12cが配置されている。
操作盤配置部12aは制御手段19の操作盤22が配置される部位である。操作盤22は使用者に供されるので、操作盤配置部12aは使用者側(正面側、図2(a)の紙面左側)に配置することが好ましい。
重合空間形成部12bはこの上に重合のための空間(重合空間)が形成される部位であり、本形態では回転台13が配置されている。回転台13の上に重合の対象である歯科補綴物1が配置されて光が照射される(図8参照)。
フタ保持部12cは、フタ25を本体11に保持し、該フタ25を開閉してフタ25の内外を連通する開口の形成及び開口の閉鎖を行う際にフタ25を回動させる軸を有する部位である。従って本形態ではフタ保持部12cはフタ25に設けられた回動軸26を受ける軸受12dを有している。ただし、このようなフタ25の開閉を可能とする手段はこれに限定されることなく、他の公知の手段を用いることができる。これには例えばヒンジが挙げられる。
回転台13の基体12への配置は例えば次のように行われる。すなわち、回転台13のうちモータ13aは基体12の内側に内包され、載置台13cが基体12の重合空間形成部12bから露出して表れている。これにより、本重合の際にここに配置される歯科補綴物1を回転させることができ、さらなる均一な硬化(重合)を可能としている。
本形態では、複数の片が屈折して配置されることにより形成されているが、その他、例えば基板が円弧状に湾曲することにより同様に重合空間形成部12bを上方から覆うように構成されてもよい。このように重合空間形成部12bを覆うように光源を配置する構成は公知の形態を適用することができ、例えば特許文献3にも開示されている。
片15bに配置された光源17は、光軸が斜め下方に向いて重合空間形成部12b(重合空間のうち本重合領域、図8のVIIIa)に向けられている。好ましくは、光軸が水平に対して成す角(図4にθbで示した角度)が45°±15°である。
片15cに配置された光源18は、光軸が下方に向いて重合空間形成部12b(重合空間のうち本重合領域(図8のVIIIa)、及び仮重合領域(図7のVIIa))に向けられている。好ましくは、光軸が水平に対して成す角(図4にθcで示した角度)が75°±15°である。より好ましくは60°以上90°未満である。90°未満とすることにより仮重合時においては歯科補綴物を光照射位置に配置する際に空間を大きく形成することができ、作業のしやすさを確保することが可能である。一方、本重合時には回転台13の回転に伴うことで歯科補綴物に含まれるアンダーカット部への光の照射ができる。
ここで、近紫外線を出射する光源は、315nm以上380nm未満の範囲内にピーク波長を有し、同様に紫色の光を出射する光源は380nm以上430nm未満、青色の光を出射する光は430nm以上520nm未満の範囲にピーク波長を有することを意味する。
また配置される同種の光源の数も特に限定されることなく、1つでもよいし複数でもよい。
基板15の各片15a、15b、15cごとで配置する光源の種類や数を変えてもよいし、全て同じであってもよい。ただし、各片15a、15b、15cで光源の数及び種類を同じとすることで、特に本重合における方向による光の照射ムラを抑制することができるとともに、部材の共通化を図って生産性を向上させることができる。
制御板20は、フタ検出センサ21及び操作盤22から送信された信号を受信して演算し、その結果を回転台13、光源部材14、操作盤22に送信して制御する手段である。従って制御板20は、回転台13、光源部材14、フタ検出センサ21、及び操作盤22と電気的に接続されている。具体的にどのような制御が行われるかについては後で説明する。
本形態では制御板20は本体11の基体12の内側に配置されている。
制御板20は電子回路により構成することができ、例えば実際に演算を行う中央演算子(CPU)、プログラムが保存されたROM、作業領域や結果の保存に用いられるRAM等を備え、各機器との接続のためのインターフェイスを具備している。このようなハードウェアは公知のものを用いることができる。
ここに用いられるセンサは特に限定されることはないが、マイクロスイッチや、位置又は回転を検知するセンサを挙げることができる。
また、操作盤22には光源点灯の残り時間を表示する残時間表示部22dが設けられ、棒グラフにより光源点灯の残り時間が表示される。
これにより、入力された時間や点灯開始の指示を情報として制御板20に送信し、該制御板20は点灯させるべき光源や点灯時間を演算して光源16、17、18、及び回転台13を制御する。
開口部の縁は本体11の上面の形状と概ね同じに形成されている。これにより光源16、17、18から出射された光の漏れを抑制することができる。
なお、フタ25により形成される開口を任意の大きさで維持することができてもよい。このときにもトルクヒンジやバネヒンジを用いることができる。
光透過部27は壁25aに設けられた開口部に透光性の板が嵌め込まれることにより構成されている。透光性の板は、フタ25の内側を視認することができる程度に透明であればよく特に限定されることはないが、光源16、17、18のピーク波長の光を20%以下の透過率で透過する(80%以上遮光する。)ように減光する構成であることが好ましい。そのために例えば全波長に亘って減光する黒色のフィルターや、光源16、17、18の補色となるオレンジ色のフィルターを用いることができる。
または光源16、17、18のピーク波長の光を20%以下の透過率で透過して他残りの80%のうちの少なくとも一部を反射する、マジックミラーであってもよい。これにより光透過部27を通してフタ25の内側を視認した際にも、光源16、17、18による眩しさを低減でき、歯科補綴物が見やすくなる。
光透過部27は、フタ25の閉鎖の姿勢(図4、開口が閉鎖された姿勢)であっても、フタ25の開放の姿勢(図5、開口が形成された姿勢)であっても、重合が行われている部位を視認することができる位置に配置されていることが好ましい。
ただしこれに限られることなく、フタに左右方向に開く方引き又は両引きのスライド式の扉が設けられることにより開閉してフタの内外を連通する開口の形成及び開口の閉鎖が行われてもよい。このときには、扉が最大に開く限度を仮重合をするための開度に制限したり、仮重合をする位置で扉の開閉を規制(ロック)する機構を設けることができる。これにより利用者は、自動的に仮重合時に必要な扉の開度を得ることができ利便性の向上が図られる。
フタ25を仮重合モードの姿勢にすると、制御手段19に備えられたフタ検出センサ21がフタ25の姿勢を検知して信号を制御板20に送信する。当該信号を受けた制御板20では演算が行われ、これが仮重合モードとなるべきであることを決定する。
当該決定により、制御板20は回転台13の載置台13cの回転を規制して載置台13cが回転しないように制御する。さらに、制御板20は光源部材14に対して、光源のうち光軸が重合空間形成部12bに交わる光源の少なくとも1つを点灯可能とし、これ以外を点灯できないように規制する。すなわち、光軸の方向が異なる複数(2方向以上)である光源のうちの一部の方向(フタが閉鎖の姿勢の場合よりも少ない方向数)で光源が点灯する。)ように規制する。本形態では例えば光源18のみを点灯可能として他の光源16、17は点灯できないように規制する。これにより、フタ25の内側であるとともに光源18の照射範囲となる領域が重合空間としての仮重合領域VIIaとなる。またこのとき制御板20は光源18を点灯する時間を設定し点灯時間をカウントダウン(カウントアップ)する。
点灯する光源はフタ25により開口が形成された姿勢で直視することができない位置の光源であることが好ましい。これにより安全性を高めることができる。
なお、このように光源18は、仮重合の際に用いられることからより効率よく重合を行うことができるように、青色のLED、又は青色及び紫色のLEDとされることが好ましい。
また光源18の点灯は、点灯のためのエネルギーを調整して明るく点灯したり暗く点灯したりできてもよい。効率よく短時間で重合する際には高いエネルギーで点灯する。
なお、当該フタ25の閉鎖により操作盤の設定時間(タイマー)がリセットされるように構成することもできる。
フタ25を本重合モードの姿勢にすると、制御手段19に備えられたフタ検出センサ21がフタ25の姿勢を検知して信号を制御板20に送信する。当該信号を受けた制御板20では演算が行われ、これが本重合モードとなるべきであることを決定する。
当該決定により、制御板20は回転台13の載置台13cの回転を可能とし、載置台13cが回転できるように制御する。さらに、制御板20は光源部材14に対して、全ての光源が点灯できるようにする。これにより、フタ25の内側で光源16、17、18の照射範囲となる領域が重合空間としての本重合領域VIIIaとなる。
使用者は図8にVIIIcで示したように光透過部27を通して歯科補綴物1を見て実際の光照射位置を確認しながら本重合を進めることができる。そして本重合用点灯開始スイッチ22aで設定した時間が経過することにより光源16、17、18が消灯する。
また光源の点灯は、点灯のためのエネルギーを調整して明るく点灯したり暗く点灯したりできてもよい。効率よく短時間で重合する際には高いエネルギーで点灯する。
また、いずれのモードであっても光源からの光が直接使用者の目に入ることが防止されており、眩しさによる作業効率の低下を抑制することが可能である。なお、意図しない点灯による眩しさを防止するため、フタ25が仮重合のための姿勢を越えて開放されたときには、これをフタ検出センサ21で検知して、制御板20によりいずれの光源16、17、18も点灯しないように制御してもよい。
過程S12は過程S11の状態において、フタが開いているかを判断する過程(フタ開判断過程)である。すなわち、フタが使用者により開けられたか否かを判断する。フタが開いていなければNoが選択され、引き続き過程S11が維持される。一方フタが開いていれば過程S13に進む。
過程S13はフタが開いた待機状態の過程(フタ開・待機過程)である。
過程S14は過程S13の状態において仮重合が開始されたかを判断する過程(仮重合開始判断過程)であり、使用者により仮重合開始の指令がされたかを判断する。仮重合開始の指令があった場合にはYesが選択され、過程S19で仮重合が開始される(仮重合過程)。そして仮重合が終了することにより終了する。一方、仮重合開始の指令がないときにはNoが選択されて過程S15に進む。仮重合の開始の指令は、使用者が操作盤22の仮重合点灯開始スイッチ22bを押圧する、又はフタ25に囲まれた内側にスイッチが配置された場合には当該スイッチを押圧することにより行うことができる。
過程S17は過程S16の状態において本重合が開始されたかを判断する過程(本重合開始判断過程)であり、使用者により本重合開始の指令がされたかを判断する。本重合開始の指令があった場合にはYesが選択され、過程S18で本重合が開始される(本重合過程)。そして本重合が終了することにより終了する。一方、本重合開始の指令がないときにはNoが選択されて過程S16が維持される。本重合の開始の指令は、使用者がフタ25を閉めたり、点灯開始スイッチ22’c(図6(b)参照)を押圧することにより行うことができる。
過程S22は過程S21の状態において、フタが開いているかを判断する過程(フタ開判断過程)である。すなわち、フタが使用者により開けられたか否かを判断する。フタが開いていなければNoが選択され過程S21が維持される。一方フタが開いていれば過程S23に進む。
過程S23はフタが開いた待機状態の過程(フタ開・待機過程)である。
過程S24は過程S23の状態において仮重合が開始されたかを判断する過程(仮重合開始判断過程)であり、使用者により仮重合開始の指令がされたかを判断する。仮重合開始の指令があった場合にはYesが選択され、過程S30で仮重合が開始される(仮重合過程)。そして仮重合が終了することにより終了する。一方、仮重合開始の指令がないときにはNoが選択されて過程S25に進む。仮重合の開始の指令は、使用者が操作盤22の仮重合点灯開始スイッチ22bを押圧する、又はフタ25に囲まれた内側にスイッチが配置された場合には当該スイッチを押圧することにより行うことができる。
光源の種類の観点からは、紫外線を多く含む光源は仮点灯の際には点灯しないことが好ましい。
また、照射の強さの観点からは、その放射照度と照射時間の積が100J/m2以下であることが好ましい。これを超えた場合には強制的に消灯させることもできる。例えば目
視で10秒観察することを想定した場合には放射照度は10W/m2以下とする。また、仮点灯時間を、上記強制的に消灯させる時間の範囲内で操作盤によりタイマーで設定し、照射時間を制限できるように構成してもよい。
本例の光透過部27”は基板15のうち最も使用者側となる側の端部から垂下するように配置され、重合空間に光透過部27”が設けられている。光透過部27”自体の構成は上記した光透過部27と同様である。
このような技工用重合装置10”によればフタ25が大きく開いていても使用者には光透過部27”を通して光が届くためより確実に目を保護することができる。また、このような光透過部27”は仮重合領域VIIa(図7参照)の目印とすることもできる。
図14の例は、集光レンズ31が先端に配置されたスタンド32を載置台13cに置き、集光レンズ31を光源18の出光側に配置する例である。これも手動により必要に応じてスタンド32を載置台13cに載せる。
図15(a)の例は、フタ25の内側に集光レンズ31を保持し、不図示のリンク機構により集光レンズ31を自動的に移動させる例である。すなわち、図15(a)で示したように仮重合モードの姿勢のときには集光レンズ31は光源18の出光側に配置され光源18からの光を集光するが、図15(a)に矢印XVaで示したようにフタ25を閉鎖する(本重合モードの姿勢にする)とリンク機構により集光レンズ31が図15(a)に矢印XVbで示したように移動し、光源18の出光側から除外される。
図15(b)の例は、集光レンズ31と光源18との相対的な距離を変化させて集光の程度を変化させる例である。すなわち、図15(b)で示したように仮重合モードの姿勢のときには集光レンズ31と光源18との距離は光源18からの光を集光するが、手動又は図15(b)に矢印XVcで示したようにフタ25を閉鎖する(本重合モードの姿勢にする)と自動的に光源部材14が図15(b)に矢印XVdで示したように上昇して集光レンズ31と光源18との距離を変更する。これにより集光を解除することができる。ここでは光源部材14を移動させる例で説明したが、集光レンズ31を移動させることでも同様に作用する。
11 本体
12 基体
13 回転台
14 光源部材
15 基板
16、17、18 光源
19 制御手段
20 制御板
21 フタ検出センサ
22 操作盤
25 フタ
26 回動軸
27 光透過部
Claims (3)
- 歯科補綴物に用いられる光硬化性材料を硬化させる技工用重合装置であって、
光軸の方向が少なくとも2方向である複数の光源と、
前記光源を覆いその内側に重合空間を形成するとともに、前記重合空間の内外を連通する開口の形成及び該開口の閉鎖を切り替えるフタと、
前記フタによる前記開口の形成及び該開口の閉鎖を検知するセンサと、
前記センサから信号を受信して、前記開口の形成及び該開口の閉鎖の姿勢に基づいて前記複数の光源のうち前記開口の閉鎖の姿勢では光軸の方向が異なる2方向以上の光源を点灯させ、前記開口が形成された姿勢では前記開口の閉鎖の姿勢よりも少ない方向数の光源を点灯させる制御手段と、を備える、技工用重合装置。 - 歯科補綴物に用いられる光硬化性材料を硬化させる技工用重合装置であって、
光軸の方向が少なくとも2方向である複数の光源と、
前記光源を覆いその内側に重合空間を形成するとともに、前記重合空間の内外を連通する開口の形成及び該開口の閉鎖を切り替えるフタと、
前記フタによる前記開口の形成及び該開口の閉鎖を検知するセンサと、
前記センサから信号を受信して、前記開口の形成及び該開口の閉鎖の姿勢に基づいて前記複数の光源のうち前記開口の閉鎖の姿勢では光軸の方向が異なる2方向以上の光源を点灯させ、前記開口が形成された姿勢では前記開口の閉鎖の姿勢よりも少ない方向数の光源を点灯させる制御手段と、
前記フタが閉鎖した姿勢で前記フタで囲まれる空間の内側に配置され、前記開口が形成された姿勢で前記光源の点灯と非点灯とを切り替えるスイッチと、
前記フタで囲まれる空間の外側に配置され、前記閉鎖の姿勢で前記光源の点灯と非点灯とを切り替えるスイッチと、
を備える、技工用重合装置。 - 前記光源は、高いエネルギーでの点灯と、低いエネルギーでの点灯とが可能であり、前記フタで囲まれる空間の外側に配置されたスイッチを押した際に、
前記制御手段は前記演算により、前記フタにより開口が形成された姿勢で前記低いエネルギーで前記光源を点灯すべき決定をし、前記フタにより開口が閉鎖された姿勢で前記高いエネルギーで前記光源を点灯すべき決定をする、請求項1又は2に記載の技工用重合装置。
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JP2020142516A (ja) * | 2019-03-06 | 2020-09-10 | イボクラール ビバデント アクチェンゲゼルシャフト | 重合および後仕上げ装置 |
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