JP6228390B2 - Photopolymerization equipment - Google Patents

Description

  The present invention relates to a photopolymerization apparatus.

  Patent Document 1 discloses a polymerization apparatus for dental technology provided with a plurality of LED light sources for irradiating light for curing on a polymerization region, which is a region where a dental prosthesis formed above a turntable can be placed. Is disclosed.

JP 2013-17616 A

Here, in the photopolymerization apparatus used for forming the prosthesis, light may be emitted from a plurality of types of point light sources having different wavelengths of emitted light. Depending on the arrangement of the point light sources, the prosthesis to be formed may be emitted. The hardness is reduced, or the hardness of the prosthesis is varied depending on the prosthesis to be formed.
An object of the present invention is to improve the quality of a prosthesis formed by emitting light from a plurality of types of point light sources having different wavelengths of emitted light.

For this purpose, the photopolymerization apparatus to which the present invention is applied includes a rotating disk on which a photocurable material used for forming a prosthesis is placed and which rotates around a predetermined rotation center, and the rotating disk Irradiating means for irradiating the photocurable material on the rotating disk with light, and the irradiating means includes a plurality of point light sources that emit light of a predetermined wavelength. And a first point light source group in which several points of the point light sources are arranged in the radial direction of the turntable and the rotation direction of the turntable, and the first point light source group in the rotation direction of the turntable. A plurality of point light sources arranged at positions different from the one point light source group and emitting a wavelength different from the predetermined wavelength, and the radial direction of the rotating disk and the rotating direction of the rotating disk The point light source for several rows in each direction A second point light source group arranged, and the rotating plate rotates so that the photo-curable material on the rotating plate is opposed to the first point light source group and the second point light source group. This is a photopolymerization apparatus configured to alternately repeat the confrontation with the light source group.
Here, the second point light source group includes a smaller number of point light sources than the first point light source group, and light emitted from the point light sources included in the second point light source group. The wavelength can be characterized by being shorter than the wavelength of the light emitted from the point light sources included in the first point light source group. In this case, the quality of the prosthesis formed by the light emitted from the first point light source group and the second point light source group can be improved.
The rotating disk and a storage chamber for storing the photocurable material on the rotating disk are further provided, and an opening is formed in a side portion of the storage chamber, and the first point light source group and the first light source group The second point light source group is provided on the ceiling of the storage chamber, and one point light source group of the first point light source group and the second point light source group is the other point light source. The other point light source group is provided on the opening side of the storage chamber with respect to the group, and the other point light source group is provided on the back side of the storage chamber with respect to the one point light source group. In this case, more light from one point light source group of the first point light source group and the second point light source group is irradiated to the photocurable material disposed on the opening side of the storage chamber. Will be able to.
The turntable rotates in one direction, and the predetermined wavelength is located upstream of the first point light source group and downstream of the second point light source group in the one direction. A point light source that emits light of a predetermined wavelength is further provided on the downstream side of the first point light source group and the upstream side of the second point light source group in the one direction. A point light source for emitting light may be further provided. In this case, as compared with the case where no point light source is provided upstream from the first point light source group and downstream from the second point light source group, the photocurable material on the turntable is predetermined. It becomes possible to irradiate more light of the specified wavelength.

  According to the present invention, it is possible to improve the quality of a prosthesis formed by emitting light from a plurality of types of point light sources having different wavelengths of emitted light.

It is an external appearance perspective view of the superposition | polymerization apparatus for dental technicians concerning this embodiment. It is a perspective view at the time of seeing a superposition | polymerization apparatus from the back side. It is the figure which expanded and displayed UI shown in FIG. 1 (A). It is a figure for demonstrating the apparatus structure of a superposition | polymerization apparatus. It is the figure which showed the state inside a storage chamber from the entrance side of a storage chamber. It is a perspective view of a 3rd light source. It is a perspective view of the 2nd light source. It is a front view of the board | substrate provided in the 1st light source. It is a front view of the board | substrate provided in the 2nd light source. It is the figure which showed the state of the table and the 3rd light source at the time of seeing a superposition | polymerization apparatus from upper direction. It is the figure which showed the test result. It is the figure which showed the 3rd light source and the test result in the comparative example 1. It is the figure which showed the 3rd light source and the test result in the comparative example 2.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is an external perspective view of a dental technician polymerization apparatus 1 (hereinafter simply referred to as “polymerization apparatus 1”) according to the present embodiment.
The polymerization apparatus 1 according to the present embodiment generates a dental prosthesis by irradiating light to a photocurable material that is a source of a dental prosthesis and curing (polymerizing) the photocurable material. . In addition, as a photocurable material, photoradical polymerization materials, such as camphorquinone, can be mentioned, for example. In the present specification, hereinafter, the above-mentioned photocurable material that is a source of a dental prosthesis is referred to as a light irradiator.

  As shown in FIG. 2A, the polymerization apparatus 1 is provided with an exterior cover 30 that functions as a part of the housing. The polymerization apparatus 1 is formed in a rectangular parallelepiped shape, and includes an upper surface 11, a bottom surface 12, a first side surface 13, a second side surface 14, a back surface 15, and a front surface 16. Furthermore, as shown in FIG. 1A, the polymerization apparatus 1 includes an apparatus main body 20 and a lid member 21 attached to the apparatus main body 20 so as to be openable and closable. The lid member 21 is provided with a window portion 21A so that the inside of the polymerization apparatus 1 can be visually recognized through the window portion 21A.

  Here, the lid member 21 is attached to the apparatus main body 20 via a hinge (not shown) provided at the lower end portion in the drawing, and the upper side of the lid member 21 is pulled to the near side. As shown in FIG. (B), the lid member 21 rotates to the near side. When the lid member 21 is pulled to the near side, a storage chamber 22 in which the light irradiation body is stored appears as shown in FIG. An opening 22A is formed in a side portion (side surface) of the storage chamber 22, and the light irradiation body is installed in the storage chamber 22 through the opening 22A.

  Further, as shown in FIG. 2B, a rubber plate-like member 24 is attached to a portion of the apparatus main body 20 that faces the lid member 21. Thereby, it is prevented that a gap is formed between the apparatus main body 20 and the lid member 21, and light inside the polymerization apparatus 1 is suppressed from leaking to the outside. The plate-like member 24 also has a role as a cushioning material, and the impact applied to the apparatus main body 20 when the lid member 21 is closed is reduced. Moreover, in this embodiment, the cover member 21 is comprised including a metal material, and the plate-shaped member 24 has magnetism. For this reason, when the lid member 21 is closed, the lid member 21 is held by the plate-like member 24.

Further, in the present embodiment, when the lid member 21 is pulled to the near side and the lid member 21 is opened by the user, a table 23 as an example of the turntable appears as shown in FIG. Here, in this embodiment, the light irradiation body is housed in the storage chamber 22 by first placing the light irradiation body on the table 23 and then moving the table 23 into the storage chamber 22.
The table 23 is formed in a disk shape, and in the present embodiment, the diameter of the table 23 is 90 mm. In the present embodiment, the table 23 is interlocked with the movement of the lid member 21, and when the lid member 21 is opened, the table 23 comes out of the apparatus main body 20, and when the lid member 21 is closed. The device body 20 is housed inside.

  Here, the storage chamber 22 is formed in a rectangular parallelepiped shape. Further, as shown in FIG. 2B, the storage chamber 22 includes a first side 221, a second side 222 (not shown in FIG. 1) located on the opposite side of the first side 221, and the back of the storage chamber 22. Are provided with a third side surface 223 (not shown in FIG. 1), an upper surface 224 (not shown in FIG. 1), and a bottom surface 225.

  The storage chamber 22 is provided with a first light source 31 to a third light source 33. Here, the first light source 31 is provided on the first side surface 221. The second light source 32 is provided on the second side surface 222. The third light source 33 that functions as an irradiating unit is provided on the upper surface 224. In addition, the third light source 33 is provided on the ceiling of the storage chamber 22.

  In the present embodiment, light is irradiated from the first light source 31 to the third light source 33 to the light irradiation body, and the light irradiation body is polymerized. In addition, in this embodiment, three surfaces (first side 221, second side 222, and upper surface 224) among a plurality of inner surfaces (first side 221 to third side 223, upper surface 224, and bottom surface 225) included in the storage chamber 22. ) (From each of the locations where the three surfaces are provided), the light is emitted to the light irradiation body.

Each of the first light source 31 to the third light source 33 is provided with a plurality of LEDs (Light Emitting Diodes) as an example of a point light source. In the present embodiment, light emitted from the LEDs is used. The photoirradiator is used for polymerization. Here, when the LED is used, the life of the light source can be extended as compared with the case of using a halogen or a fluorescent lamp.
Moreover, when using LED, the temperature rise of a light irradiation body can be suppressed now. Here, the first light source 31 to the third light source 33 can be halogen or fluorescent lamps, but the light emitted from the halogen or fluorescent lamp includes light of a color other than blue or purple. In this case, the light irradiator may be heated by light of a color other than blue or purple.

In addition, most of the commercially available dental light irradiators (photo-curable materials) are cured with blue or violet light with a short wavelength, but blue or purple Light of a color other than purple is also included, and the light irradiation body may be heated by the light of a color other than blue or purple.
In addition, when a halogen, a fluorescent lamp, or the like is used, light with a wavelength that does not contribute to the curing of the light irradiator is emitted, resulting in wasted energy consumption.

On the other hand, when using an LED as in this embodiment, it becomes possible to irradiate the light irradiator only with light of a specific wavelength, and the problem of heating can be avoided. Moreover, efficient use of energy becomes possible.
In the present embodiment, an example in which a light source is configured using an LED has been described as an example. However, for example, a surface emitting LED may be used as the light source. Moreover, organic or inorganic EL (Electro Luminescence), LD (laser diode), surface emitting LD etc. can also be used for a light source.

The polymerization apparatus 1 will be further described with reference to FIG.
In the polymerization apparatus 1 of this embodiment, a rotation mechanism that has a motor and rotates the table 23 in the circumferential direction is provided below the bottom surface 225. The table 23 is provided with a rotating shaft that extends downward from the central portion of the table 23 in the radial direction. In this embodiment, the rotating shaft is rotated by a rotating mechanism. When the rotary shaft rotates, the table 23 rotates about the central portion in the radial direction of the table 23.
In the present embodiment, as shown in FIG. 1B, a groove 227 along the depth direction of the polymerization apparatus 1 is formed on the bottom surface 225. When the table 23 moves in accordance with the opening / closing operation of the lid member 21, the rotating shaft moves in the groove 227.

  In the present embodiment, as shown in FIG. 1A, a user interface (UI) 27 that displays information to the user and receives an operation by the user is provided on the upper portion of the front surface 16. Further, in the present embodiment, the second side surface 14 is provided with an air introduction port 28 used for introducing air outside the polymerization apparatus 1 (outside air) into the polymerization apparatus 1. The air inlet 28 is also provided on the first side surface 13 (see FIG. 2).

FIG. 2 is a perspective view when the polymerization apparatus 1 is viewed from the back surface 15 side.
A discharge fan 35 for discharging the air inside the polymerization apparatus 1 to the outside is provided on the back surface 15 of the polymerization apparatus 1. The discharge fan 35 is provided at the center in the width direction of the back surface 15 and at the top of the back surface 15. Further, below the exhaust fan 35, an air intake port 36 that is used to take in air outside the polymerization apparatus 1 is provided. Note that a filter 37 is attached to the air intake port 36, and foreign matter is prevented from entering the inside of the polymerization apparatus 1.

  Further, although not shown, an air supply fan is provided behind the filter 37 (in the air intake port 36) to send air into the polymerization apparatus 1 (inside the storage chamber 22). In this embodiment, two fans, the exhaust fan 35 and the air supply fan, are used to supply air into the polymerization apparatus 1 and exhaust air from the polymerization apparatus 1. In some cases, air supply and air discharge can be performed only by the discharge fan 35. In this embodiment, a power switch 38 and a connector 39 to which a power cable is connected are provided on the back surface 15 of the polymerization apparatus 1.

FIG. 3 is an enlarged view of the UI 27 shown in FIG.
As shown in the figure, the UI 27 is provided with a liquid crystal panel 271 for displaying information. Further, a start / stop button 272 for emitting / stopping light from the first light source 31 to the third light source 33 is provided. Further, a time setting button 273 for setting the light irradiation (emission) time is provided. The time setting button 273 includes a minute setting button 273A for setting “minute” and a second setting button 273B for setting “second”. Further, a plurality of registration buttons 274 used for registering the light irradiation time set by the user in the memory are provided.

  The UI 27 is provided with a pre-polymerization button 275 that is pressed by the user when pre-polymerization is performed. Although not described above, in the present embodiment, when the start / stop button 272 is pressed in a state where the lid member 21 is opened, light from the first light source 31 to the third light source 33 is displayed. Is not emitted. On the other hand, in the present embodiment, light is emitted from the third light source 33 when the pre-polymerization button 275 is pressed while the lid member 21 is open.

Depending on the user, there is a case where it is desired to irradiate the light irradiation body with the lid member 21 opened. In such a case, the pre-polymerization button 275 is pressed by the user.
More specifically, the material composing the light irradiation body often has fluidity, and in this case, the light irradiation body (dental prosthesis) is formed in a form in which this material is gradually applied (painted form). Will be formed. In this case, generally, a pre-polymerization operation in which polymerization is performed by irradiating light each time a material is deposited is repeated. When the preliminary polymerization is completed and the intended shape is completed, the final light irradiation (main polymerization) is performed for a long time (for example, 10 minutes).

In such a work process, when the pre-polymerization button 275 is provided, it is not necessary to perform the opening / closing operation of the lid member 21 every polymerization, and light irradiation can be performed with the lid member 21 opened. It becomes like this.
In the pre-polymerization mode, the light irradiator is not placed on the table 23, and the light irradiator is often irradiated with the light irradiator supported by the user's hand. In such a case, the light irradiation body is often disposed near the entrance of the storage chamber 22. In addition, although the opening 22A (see FIG. 1B) is provided in the storage chamber 22, in the pre-polymerization mode, a light irradiation body is often installed near the opening 22A.

  By the way, when the light irradiator is arranged in the vicinity of the opening 22A as described above, even if the LED on the back side of the storage chamber 22 is turned on, the light from the LED hardly reaches the light irradiator. For this reason, when the pre-polymerization button 275 is pressed, an LED (for example, an LED included in the second LED group 620, which will be described later) located on the back side of the storage chamber 22 among the LEDs is not lit. Alternatively, a process of dropping the output may be performed.

In the present embodiment, the configuration in which the LED is turned on when the pre-polymerization button 275 is pressed is described as an example. However, a sensor (a photo sensor, an ultrasonic sensor, or the like) that detects the user's hand is provided, The LED may be turned on when the hand is detected by the sensor. In this case, user workability is improved.
Further, in the present embodiment, as described above, a registration button 274 used for registering the light irradiation time in the memory is provided, and by using the registration button 274, the time of the main polymerization (hereinafter, referred to as the polymerization time) (Referred to as “main polymerization time”). By the way, the object that can be registered is not limited to the main polymerization time. By operating the registration button 274, the pre-polymerization time may be registered.

In this embodiment, the irradiation time is displayed on the liquid crystal panel 271. At this time, the display is performed by a countdown (subtraction) method in which the time gradually decreases. By the way, it is not limited to the count-down method, and for example, when pre-polymerization is performed, the time may be displayed by a count-up (addition) method.
For example, when performing the LED on / off processing using the sensor, counting can be started when the user's hand is detected by the sensor, and the counting can be ended when the user's hand is no longer detected. . In this case, the user can perform light irradiation on the light irradiation body only for a time desired by the user each time instead of a predetermined time.

  Moreover, in this embodiment, as shown in FIG. 4 (the figure for demonstrating the apparatus structure of the superposition | polymerization apparatus 1), the control part 41 comprised by CPU controlled by the program is provided. Here, the control unit 41 receives a signal from the UI 27. In addition, a control signal is output to the UI 27 and the first light source 31 to the third light source 33 to perform display control in the UI 27 and lighting control of the first light source 31 to the third light source 33. In the present embodiment, a power source 42 that supplies power to the control unit 41, the UI 27, and the first light source 31 to the third light source 33 is provided.

FIG. 5 is a view showing a state inside the storage chamber 22 from the entrance (opening 22 </ b> A) side of the storage chamber 22. In addition, in FIG. 5, the first side 221 to the third side 223 and the upper surface 224 are displayed.
In the present embodiment, as shown in the figure, a first connection surface 51 that connects the first side surface 221 and the upper surface 224 is provided at a location where the first side surface 221 and the upper surface 224 intersect. In addition, a second connection surface 52 that connects the second side surface 222 and the upper surface 224 is provided at a location where the second side surface 222 and the upper surface 224 intersect.

  Here, the first connection surface 51 is arranged in a state having an inclination of 45 ° with respect to each of the first side surface 221 and the upper surface 224. The second connection surface 52 is also arranged with a 45 ° inclination with respect to each of the second side surface 222 and the upper surface 224. Thereby, in this embodiment, compared with the structure in which the 1st connection surface 51 and the 2nd connection surface 52 are not provided, the degree of condensing with respect to the center part of the storage chamber 22 can be raised now.

Further, in the present embodiment, the third connection surface 53 that connects the third side surface 223 and the upper surface 224, the fourth connection surface 54 that connects the first side surface 221 and the third side surface 223, the second side surface 222 and the third surface. A fifth connection surface 55 that connects the side surface 223 is provided.
Here, the third connection surface 53 is also arranged with a 45 ° inclination with respect to each of the third side surface 223 and the upper surface 224. The fourth connection surface 54 is also arranged with a 45 ° inclination with respect to each of the first side surface 221 and the third side surface 223. Further, the fifth connection surface 55 is also arranged with a 45 ° inclination with respect to each of the second side surface 222 and the third side surface 223. Thereby, in this embodiment, the degree of condensing with respect to the center part of the storage chamber 22 is further increased.

  In the present embodiment, as shown in FIG. 1B, the sixth connection surface 56 that connects the bottom surface 225 and the first side surface 221 is also 45 ° with respect to each of the bottom surface 225 and the first side surface 221. It is arranged with an inclination. In addition, the seventh connection surface 57 that connects the bottom surface 225 and the second side surface 222 (see FIG. 5) is also arranged with an inclination of 45 ° with respect to each of the bottom surface 225 and the second side surface 222. .

  More specifically, in the present embodiment, in addition to the first side surface 221, the second side surface 222, the upper surface 224, and the bottom surface 225, the first connection surface 51, the second connection surface 52, the sixth connection surface 56, and the seventh connection surface 57 are provided. The cross-sectional shape of the outer edge of the storage chamber 22 is an octagon. If it adds, the cross-sectional shape in the surface along the up-down direction and the width direction of the superposition | polymerization apparatus 1 will be an octagon. Thereby, in this embodiment, the degree of condensing with respect to the center part of the storage chamber 22 is raised compared with the case where the cross-sectional shape of the outer edge of the storage chamber 22 is a rectangle.

  Although not described above, aluminum is deposited on the first side surface 221, the second side surface 222, the third side surface 223, the upper surface 224, the bottom surface 225, and the first connection surface 51 to the seventh connection surface 57. These surfaces also have a function as a reflector that reflects the light emitted from the first light source 31 to the third light source 33 toward the inside of the storage chamber 22.

  Further, as shown in FIG. 5, a plurality of recesses 80 are provided on the first side surface 221, the second side surface 222, and the upper surface 224, and the LEDs are accommodated in the recesses 80. Further, a transparent protective cover 81 is attached to the first side surface 221, the second side surface 222, and the upper surface 224 as shown in FIG. Thereby, it is prevented that dirt adheres to the first side surface 221, the second side surface 222, the upper surface 224, and the LED. The protective cover 81 is provided in a removable (replaceable) state.

FIG. 6 is a perspective view of the third light source 33. In FIG. 6, the right side in the drawing is the back side of the storage chamber 22, and the left side in the drawing is the opening 22 </ b> A side of the storage chamber 22.
Although the description is omitted above, the third light source 33 is unitized. In the present embodiment, the united third light source 33 is attached to the upper portion of the storage chamber 22.
As shown in FIG. 6, the third light source 33 is provided with a reflector 311 in which a vapor deposition process is performed on the surface and a plurality of recesses 80 are formed. In addition, behind the reflector 311, a substrate 312 to which a plurality of LEDs (not shown) are attached is provided.

  The LED on the substrate 312 is exposed through an opening (not shown) formed in the bottom of the recess 80. A substrate side terminal 312A connected to a main body side terminal (not shown) formed on the main body side of the polymerization apparatus 1 is provided on the substrate 312. Through the substrate side terminal 312A, each LED is connected to each LED. Power feeding is performed. Further, the third light source 33 is provided with a heat sink (heat radiating member) 313 for promoting heat radiation behind the substrate 312.

  A transparent protective cover 81 is provided on the front side of the reflector 311, and the protective cover 81 is fixed to the reflector 311. The reflector 311 is provided with a plurality of protrusions 311A arranged with a gap between the reflector 311 and the surface of the reflector 311. In this embodiment, the edge of the protective cover 81 is connected to the main body of the reflector 311. The protective cover 81 is fixed to the reflector 311 by being inserted between the protrusion 311A.

FIG. 7 is a perspective view of the second light source 32. In FIG. 7, the upper side in the figure is the upper side of the polymerization apparatus 1, and the lower side in the figure is the lower side of the polymerization apparatus 1. Moreover, the 2nd light source 32 and the 1st light source 31 are comprised similarly, and the description about the 1st light source 31 is abbreviate | omitted.
Similar to the third light source 33, the second light source 32 includes a reflector 321 in which a vapor deposition process is performed on the surface and a plurality of recesses 80 are formed. In addition, a substrate 322 to which a plurality of LEDs (not shown) are attached is provided behind the reflector 321.

  Similar to the third light source 33, the LED on the substrate 322 is exposed through an opening (not shown) formed in the bottom of the recess 80. Although not shown in FIG. 7, a substrate side terminal connected to a main body side terminal (not shown) formed on the main body side of the polymerization apparatus 1 is provided on the substrate 322. Power is supplied to each LED through the board-side terminal. Further, the second light source 32 is provided with a heat sink (heat radiating member) 323 that promotes heat radiation behind the substrate 322.

  A transparent protective cover 81 is provided on the front side of the reflector 321, and the protective cover 81 is fixed to the reflector 321. Here, similarly to the third light source 33, the reflector 321 is provided with a plurality of protrusions 321A arranged with a gap between the reflector 321 and the edge of the protective cover 81. The protective cover 81 is fixed to the reflector 321 by being inserted between the main body portion 321 and the protrusion 321A.

FIG. 8 is a front view of the substrate 312 provided in the third light source 33. In FIG. 8, the right side in the drawing is the back side of the storage chamber 22, and the left side in the drawing is the opening 22 </ b> A side of the storage chamber 22.
As shown in the figure, a plurality of LEDs are mounted on the substrate 312.
In the present embodiment, a first LED group 610 in which LEDs that emit light having a wavelength of 470 nm (hereinafter, these LEDs are referred to as “long wavelength LEDs 61”) are arranged on the substrate 312 is provided.

Further, a second LED group 620 in which LEDs that emit light having a wavelength of 405 nm (hereinafter, these LEDs are referred to as “short wavelength LEDs 62”) is arranged on the substrate 312 is provided. Further, in the present embodiment, three long wavelength LEDs 61 are provided in each of the upper side and the lower side of the second LED group 620 in the drawing.
In FIG. 8, white circles indicate the long wavelength LED 61, and black circles indicate the short wavelength LED 62.

  FIG. 9 is a front view of the substrate 322 provided in the second light source 32. In FIG. 9, as in FIG. 7, the upper part in the figure corresponds to the upper part of the polymerization apparatus 1, and the lower part in the figure corresponds to the lower part of the polymerization apparatus 1. In FIG. 9, as in FIG. 8, white circles indicate the long wavelength LEDs 61 and black circles indicate the short wavelength LEDs 62.

  In the present embodiment, the long wavelength LED 61 and the short wavelength LED 62 are also provided on the substrate 322 provided on the second light source 32. Here, three long wavelength LEDs 61 are provided on each of the left end portion and the right end portion of the substrate 322 in the drawing. Also, the three long wavelength LEDs 61 provided at the left end of the substrate are arranged side by side in the vertical direction, and the three long wavelength LEDs 61 provided at the right end of the substrate are also arranged in the vertical direction. Yes.

  On the other hand, three short wavelength LEDs 62 are provided in the central portion (central portion in the width direction) of the substrate 322. The three short wavelength LEDs 62 are also arranged in the vertical direction in the same manner as the long wavelength LED 61. In FIG. 9, the substrate side terminal 322A connected to the main body side terminal (not shown) formed on the main body side of the polymerization apparatus 1 is displayed. In the second light source 32, through the substrate side terminal 322A, Power is supplied to the long wavelength LED 61 and the short wavelength LED 62.

FIG. 10 is a view showing the state of the table 23 and the third light source 33 when the polymerization apparatus 1 is viewed from above. In FIG. 10, the upper side in the drawing is the opening 22 </ b> A side of the storage chamber 22, and the lower side in the drawing is the back side of the storage chamber 22.
In the third light source 33, a first LED group 610 including a plurality of long wavelength LEDs 61 is provided on the opening 22 </ b> A side of the storage chamber 22. In addition, a second LED group 620 composed of short-wavelength LEDs 62 is provided behind the first LED group 610 in the housing chamber 22. Further, three long wavelength LEDs 61 are provided on both sides of the second LED group 620.

The positional relationship in the rotation direction of the table 23 will be described. The first LED group 610 and the second LED group 620 are arranged at different positions in the rotation direction of the table 23.
Further, in the rotation direction of the table 23 (counterclockwise direction in the figure), three long wavelength LEDs 61 (see reference numeral 10B) are provided on the upstream side of the first LED group 610 and on the downstream side of the second LED group 620. It has been. Furthermore, in the rotation direction of the table 23, three long wavelength LEDs 61 (see reference numeral 10A) are provided on the downstream side of the first LED group 610 and on the upstream side of the second LED group 620.

  Here, in the present embodiment, the number of short wavelength LEDs 62 constituting the second LED group 620 is smaller than the number of long wavelength LEDs 61 constituting the first LED group 610. In the present embodiment, FIG. As shown in the figure, a surplus space is created on both sides of the second LED group 620 (in the portions indicated by reference numerals 10A and 10B), and the long wavelength LED 61 is arranged in the surplus space. In this case, the light irradiator on the table 23 is irradiated with more long wavelength light.

  More specifically, the first LED group 610 as an example of the first point light source group is provided on the opening 22 </ b> A side of the accommodation chamber 22 with respect to the rotation center of the table 23. Further, the second LED group 620 is provided on the back side of the storage chamber 22 with respect to the rotation center of the table 23.

  More specifically, one of the two regions located on the opening 22A side of the virtual line passing through the rotation center of the table 23 and opposed across the virtual line perpendicular to the depth direction of the storage chamber 22 A first LED group 610 is provided. In the present embodiment, the second LED group 620 is provided in the other of the two regions. In addition, about the long wavelength LED61 provided in the both sides of the 2nd LED group 620, it is provided in the other area | region.

  More specifically, in the first LED group 610, the long wavelength LEDs 61 for several rows (for three rows) are provided in the radial direction of the table 23, and the long wavelengths for several rows (for five rows) are also provided in the rotation direction of the table 23. An LED 61 is provided. Also in the second LED group 620, several rows (three rows) of short wavelength LEDs 62 are provided in the radial direction of the table 23, and several rows (three rows) of short wavelength LEDs 62 are provided in the rotation direction of the table 23. It has been.

  Note that the number of long wavelength LEDs 61 included in the first LED group 610 is 15, and the number of short wavelength LEDs 62 included in the second LED group 620 is 9, and in the present embodiment, the second LED group. 620 is configured by a smaller number of LEDs than the first LED group 610.

  Here, in the superposition | polymerization apparatus 1 of this embodiment, when the table 23 is rotated, the light irradiation body on the table 23 passes alternately below the 1st LED group 610 and the 2nd LED group 620 below. Become. If it adds, the light irradiation body on the table 23 will pass the location facing the 1st LED group 610, and the location facing the 2nd LED group 620 alternately. More specifically, as the table 23 rotates, the light irradiation body on the table 23 alternately repeats the facing with the first LED group 610 and the facing with the second LED group 620.

  And in this embodiment, when the light irradiation body has passed under the 1st LED group 610, long wavelength light (henceforth a "long wavelength light" may be called) with respect to a light irradiation body. When the light irradiator passes under the second LED group 620, the light having a short wavelength (hereinafter, sometimes referred to as “short wavelength light”) is concentrated on the light irradiator. Will come to work.

  In addition, each of the LEDs is provided such that the optical axis is along the vertical direction of the polymerization apparatus 1, and when the light illuminator passes below the first LED group 610, When the long wavelength light acts intensively on the light irradiator and the light illuminator passes below the second LED group 620, the short wavelength light from the short wavelength LED 62 is applied to the light irradiator. Act intensively.

-Example-
Next, the result of the strength test of the light irradiation body actually polymerized using the polymerization apparatus 1 will be described.
The inventor of the present polymerization apparatus 1 used the polymerization apparatus 1 described above to perform light irradiation on the test piece, and after the light irradiation, performed a strength test on the test piece. The main test conditions are as follows.
〔Test conditions〕
Long wavelength LED 61: wavelength 470 nm, 3 W (Watt)
Short wavelength LED 62: wavelength 405 nm, 2 W (watts)
·Test pieces:
・ Material used: Kuraray Medical Eplicode DA3
・ Shape: 2mm width x 2mm height x 25mm length
・ Light irradiation time: 180 seconds x 2 (both sides)
-Installation position of the test piece on the table 23:
The center of the table (center of rotation), the circumference of a circle located 15 mm away from the center of the table (on the circumference of a circle of φ30), the circumference of a circle located 30 mm away from the center of the table Three locations on the top (on the circumference of the circle of φ60): Distance between the third light source 33 and the table 23: 118 mm
-Other test conditions For each of the three installation positions, five test pieces are prepared (a total of 15 test pieces are prepared), and five test results are obtained at each of the three installation positions. Got.

〔Test results〕
FIG. 11 shows the test results.
In addition, the dotted line extended in the horizontal direction in FIG. 11 has shown the standard value prescribed | regulated by JIST6517 "hard resin for a crown".

  First, the test results for the test piece placed at the center of the table 23 will be described. When the test piece was placed at the center of the table 23, the average value of the bending strength was 67.40 MPa. Moreover, in the test piece placed on the circumference of the circle of φ30, the average value of the bending strength is 66.88 MPa, and in the test piece placed on the circumference of the circle of φ60, the average bending strength is obtained. The value was 67.32 MPa. Moreover, the total average (average of 15 test pieces) was 67.20 MPa. Furthermore, the bending strength obtained at any installation position exceeded the standard value of JIS.

―Comparison example―
Next, two comparative examples will be described. In these two comparative examples, the arrangement of the long wavelength LEDs 61 and the short wavelength LEDs 62 in the third light source 33 is different from that in the above embodiment.

[Comparative Example 1]
In Comparative Example 1, in the third light source 33, the long wavelength LED 61 and the short wavelength LED 62 were arranged as shown in FIG. 12A (a diagram showing the third light source 33 and the test result in Comparative Example 1).
Specifically, the first LED rows 31 </ b> D including only one short wavelength LED 62 and the second LED rows 31 </ b> E including two short wavelength LEDs 62 are alternately arranged in the depth direction of the storage chamber 22. Further, in the second LED row 31E located at the center in the depth direction of the storage chamber 22, the number of short wavelength LEDs 62 is increased and four short wavelength LEDs 62 are installed.

With reference to FIG. 12 (B), the test result about the comparative example 1 is demonstrated.
In this comparative example 1, as in the above example, any bending strength exceeded the standard value of JIS. However, in Comparative Example 1, the obtained bending strength variation was larger than that in the above example. Moreover, all the average values of center part bending strength, (phi) 30 bending strength, and (phi) 60 bending strength became smaller than the average value in the said Example. Moreover, the total average (average of 15 test pieces) was 63.54 MPa, which was smaller than the total average (67.20 MPa) in the examples.

[Comparative Example 2]
In Comparative Example 2, in the third light source 33, the long wavelength LED 61 and the short wavelength LED 62 were arranged as shown in (A) of FIG. 13 (a diagram showing the third light source 33 and the test result in Comparative Example 2). Specifically, the first LED rows 31 </ b> D including three short wavelength LEDs 62 and the second LED rows 31 </ b> E not including the short wavelength LEDs 62 are alternately arranged in the depth direction of the storage chamber 22.

  The test results will be described with reference to FIG. 13B. In Comparative Example 2, a part of the test results (bending strength) was lower than the JIS standard value at φ60 bending strength. Moreover, all the average values of center part bending strength, (phi) 30 bending strength, and (phi) 60 bending strength became smaller than the average value in the said Example. Furthermore, the total average (average of 15 test pieces) was 64.76 MPa, which was smaller than the total average (67.20 MPa) in the examples.

  Here, in the third light source 33 in the present embodiment (example), as described above, the long wavelength LEDs 61 for several rows are provided in each of the radial direction and the rotational direction of the table 23, and the short wavelength LEDs 62 are provided. Also, for each of the radial direction and the rotational direction of the table 23, several rows of short wavelength LEDs 62 are provided.

Thereby, in this embodiment, long wavelength light acts intensively with respect to a light irradiation body, and short wavelength light comes to act intensively. In addition, in the present embodiment, concentrated irradiation of long wavelength light and concentrated irradiation of short wavelength light are alternately performed. It is considered that the results of the above examples were obtained due to such irradiation conditions.
On the other hand, in Comparative Example 1 and Comparative Example 2, LEDs are provided for several rows only in one of the radial direction and the rotational direction of the table 23. Compared to the configuration of the present embodiment, as described above. Intensive irradiation is difficult.

(Other)
In the present embodiment, as shown in FIG. 8, the second LED group 620 is disposed on the back side of the storage chamber 22, and the first LED group 610 is disposed on the opening 22 </ b> A side of the storage chamber 22. The second LED group 620 may be replaced, the first LED group 610 may be disposed on the back side of the storage chamber 22, and the second LED group 620 may be disposed on the opening 22A side of the storage chamber 22.
In addition, one LED group of the first LED group 610 and the second LED group 620 is arranged on one side surface side (for example, the first side surface 13 (see FIG. 1A) side) of the polymerization apparatus 1, and the other These LED groups may be arranged on the other side surface side of the polymerization apparatus 1 (for example, the second side surface 14 (see FIG. 1A) side).

As shown in FIG. 8, when the second LED group 620 is disposed on the back side of the storage chamber 22 and the first LED group 610 is disposed on the opening 22 </ b> A side of the storage chamber 22, a user who performs pre-polymerization Improved operability.
In the prepolymerization, prepolymerization is mainly performed by irradiating the light irradiation body with long wavelength light. In addition, many dental light irradiation bodies (photo-curable materials) are often cured by light having a wavelength of 470 nm. In such a case, if the first LED group 610 that emits light having a wavelength of 470 nm is arranged on the opening 22A side of the storage chamber 22, the user can irradiate the light without putting the light irradiation body into the storage chamber 22. The body can be prepolymerized.

  Note that when the light irradiation body is irradiated with only light having a wavelength of 470 nm, the light irradiation body is cured, but the strength tends to be insufficient. In addition, when the light irradiation body is irradiated with only light having a wavelength of 470 nm, the light irradiation body is cured, but the bending strength tends to be insufficient. On the other hand, when the short wavelength light (light having a wavelength of 405 nm) is irradiated, the bending strength increases. For this reason, in this superposition | polymerization, short wavelength light is irradiated with respect to a light irradiation body in addition to long wavelength light.

DESCRIPTION OF SYMBOLS 1 ... Polymerization apparatus, 22 ... Storage chamber, 22A ... Opening, 23 ... Table, 33 ... 3rd light source, 61 ... Long wavelength LED, 62 ... Short wavelength LED, 610 ... 1st LED group, 620 ... 2nd LED group

Claims (4)

A photocurable material used to form a prosthesis is placed, and a rotating disk that rotates around a rotation axis along the vertical direction ;
An irradiating means disposed right above the turntable and for irradiating light to the photocurable material on the turntable;
With
The irradiation means includes
It is constituted by a plurality of point light sources for emitting light of a predetermined wavelength, and the each of the point light sources of several rows in the direction of rotation of the rotating disk in the radial direction and the turntable is arranged Rutotomoni Each of the point light sources is arranged such that each optical axis of the point light source is along the vertical direction, and emits light from the front of the rotating disk toward the rotating disk ; and
The rotating disk is composed of a plurality of point light sources that are arranged at positions different from the first point light source group in the rotation direction of the rotating disk, and emit a wavelength different from the predetermined wavelength, Several points of the point light sources are arranged in each of the radial direction and the rotation direction of the turntable , and further, each of the point light sources is arranged so that each optical axis of the point light source is along the vertical direction, A second point light source group that emits light from the front of the turntable toward the turntable ;
With
By rotating the turntable, the photocurable material on the turntable is configured to alternately repeat the facing with the first point light source group and the facing with the second point light source group. Photopolymerization equipment.   The second point light source group includes a smaller number of point light sources than the first point light source group, and the wavelength of light emitted from the point light sources included in the second point light source group. Is shorter than the wavelength of light emitted from a point light source included in the first point light source group. The rotating disk, and further comprising a storage chamber for storing a photocurable material on the rotating disk,
An opening is formed in a side portion of the storage chamber,
The first point light source group and the second point light source group are provided on a ceiling portion of the storage chamber, and one of the first point light source group and the second point light source group. The point light source group is provided on the opening side of the accommodation chamber with respect to the other point light source group, and the other point light source group is provided on the back side of the accommodation chamber with respect to the one point light source group. The photopolymerization apparatus according to claim 1. The turntable rotates in one direction,
In the one direction, a point light source that emits light of the predetermined wavelength is further provided on the upstream side of the first point light source group and the downstream side of the second point light source group,
In the one direction, a point light source that emits light of the predetermined wavelength is further provided on the downstream side of the first point light source group and the upstream side of the second point light source group. The photopolymerization apparatus according to claim 2.

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