Exposure device and method for irradiating dental object and system comprising same
By designing an exposure device for radiation sources with a wavelength greater than 350nm and a high power density, dental objects are efficiently colored, which solves the problems of low UV radiation penetration depth and complex devices in the prior art, and realizes the full volume activation of dental objects and Shorter exposure time.
Patent Information
- Application Number
- CN202410736044.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-06-26
- Filing Date
- 2024-06-07
- Publication Date
- 2024-12-27
AI Technical Summary
In the prior art, UV radiation has a low penetration depth of dental glass ceramics, and UV lasers, UV LEDs and UV optics have complex technologies and large sizes, resulting in low coloring efficiency and large technical workload of dental objects.
An exposure device was designed to expose dental objects using a radiation source with a wavelength greater than 350 nm and a power density greater than 10 W/cm2, including the use of an Nd-YAG laser, a Ti-sapphire laser, a light emitting diode or a mercury vapor lamp as the radiation source, and Optimize the output of the radiation source through intensity adjustment and timer device, enabling deeper material penetration and more efficient shading.
The entire volume of dental objects is achieved to be exposed and activateable, shortening the coloring time, and using more efficient and smaller devices and optics, improving the coloring effect of dental objects.
Smart Images
Figure CN119191727A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to an exposure device for irradiating a dental object and a method for irradiating a dental object. Background Art
[0002] Multicolor glasses and glass ceramics, such as quartz glass, quartz glass ceramics, lithium aluminum silicate glass, lithium aluminum silicate glass ceramics, lithium silicate glass or lithium silicate glass ceramics, can be colored by exposure and heat treatment. Exposure is usually carried out with the aid of UV radiation. After exposure, different color effects are mainly produced with the aid of temperature treatment.
[0003] However, the penetration depth of glass ceramics by exposure to UV radiation is low. UV lasers, UV LEDs and UV optics are technically complex and have large dimensions.
[0004] The technical object of the invention is to color dental objects efficiently and with little technical effort. Summary of the invention
[0005] This task is achieved through the subject matter of this article.
[0006] According to a first aspect, the technical task is solved by an exposure device for irradiating a dental object, the exposure device comprising a chamber for receiving the dental object; and a device for exposing the dental object to a wavelength greater than 350 nm and a power density greater than 10 W / cm 2 The dental object can be exposed to radiation with a wavelength greater than 350 nm and a power density greater than 10 W / cm at a specified location in the chamber. 2 The power density can also exceed 100W / cm 2 or 1kW / cm 2 These power densities can be used to excite multiphoton processes within dental objects.
[0007] The exposure device achieves the technical advantage that the penetration depth of the radiation into the material is greater when coloring dental objects. This means that the entire volume of the dental object is irradiable and activatable. If wavelengths greater than 350 nm are used, more efficient devices and optics can be used and shorter exposure times can be achieved.
[0008] In a technically advantageous embodiment of the exposure device, the radiation source is configured to expose the dental object to a wavelength greater than 700 nm. This provides technical advantages, for example, even greater penetration depths can be achieved.
[0009] In another technically advantageous embodiment of the exposure device, the radiation source is configured to emit radiation with a power of more than 1 W. For example, the laser can scan the surface with 10,000 exposure points. In the case of an exposure time of 0.1 seconds per exposure point, the total exposure time is 1000 seconds. In this case, a laser output power of 1 W is sufficient. This provides technical advantages, for example, dental objects can be efficiently irradiated.
[0010] In a further technically advantageous embodiment of the exposure device, the radiation source is formed by a laser, a light emitting diode or a mercury vapor lamp. This offers the technical advantage that, for example, the radiation for irradiating the dental object can be efficiently generated.
[0011] In another technically advantageous embodiment of the exposure device, the laser is a Ti-sapphire laser or a Nd-YAG laser. This offers technical advantages, for example, that the power density can be easily generated and the dental object can be irradiated without loss.
[0012] In another technically advantageous embodiment of the exposure device, the radiation source is configured to emit radiation in the wavelength range between 350 nm and 1800 nm, preferably between 350 nm and 1500 nm, particularly preferably between 350 nm and 1100 nm. This provides technical advantages, for example, dental objects can be effectively colored.
[0013] In another technically advantageous embodiment of the exposure device, the exposure device comprises an intensity adjustment device for adjusting the radiation intensity of the radiation source. This provides the technical advantage that, for example, the exposure intensity can be set according to the material used.
[0014] In a further technically advantageous embodiment of the exposure device, the maximum and / or average radiation intensity of the radiation source is 100 W or 300 W. In the case of a laser, the average radiation intensity can be averaged over a plurality of laser pulses. In the case of a light emitting diode or a mercury vapor lamp, the average radiation intensity can be determined continuously over time. This offers technical advantages, for example, overexposure of the dental object can be prevented.
[0015] In another technically advantageous embodiment of the exposure device, the exposure device comprises a timer device for activating the radiation source for a predetermined period of time. This provides the technical advantage that, for example, a predetermined energy per unit area can be irradiated onto the dental object.
[0016] According to a second aspect, the technical task is achieved by a method for irradiating a dental object, the method comprising exposing the dental object to a wavelength greater than 350 nm and a power less than 10 W / cm 2 The method achieves the same technical advantages as the exposure device according to the first aspect.
[0017] In a technically advantageous embodiment of the method, the wavelength is greater than 500 or 700 nm. This also offers technical advantages, for example, a greater penetration depth can be achieved.
[0018] In a further technically advantageous embodiment of the method, the power of the radiation is greater than 1 W. This also offers technical advantages, for example, that the dental object can be irradiated efficiently.
[0019] In another technically advantageous embodiment of the method, the wavelength range of the radiation emission is between 350 nm and 1800 nm, preferably between 350 nm and 1500 nm, particularly preferably between 350 nm and 1100 nm. Coloring can also be achieved by heat treatment. This offers technical advantages, for example, that dental objects can be effectively colored or exposed.
[0020] In another technically advantageous embodiment of the method, the dental object is exposed for a predetermined period of time. This provides technical advantages, for example, that a predetermined energy per unit area can be irradiated onto the dental object.
[0021] According to a third aspect, the technical task is solved by an exposure system comprising a dental object comprising polychromatic glass and / or polychromatic glass ceramic and an exposure device according to the first aspect. The exposure system achieves the same technical advantages as the exposure device according to the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Exemplary embodiments of the invention are shown in the accompanying drawings and described in more detail below, in which:
[0023] Figure 1 A schematic diagram showing an exposure apparatus; and
[0024] Figure 2 A block diagram of a method of irradiating a dental object is shown. DETAILED DESCRIPTION
[0025] Figure 1 A schematic diagram of an exposure device 100 is shown. The exposure device 100 is used to expose and activate a dental object 101 made of polychromatic glass and / or polychromatic glass ceramic. The dental object 101 is a dental restoration such as a crown, a bridge, a veneer, an abutment, an inlay or an onlay.
[0026] For this purpose, polychromatic glass and glass ceramics include, for example, oxidizable components and reducible coloring components. Oxidizable components are components that can be oxidized or stimulated to emit electrons by irradiation. Oxidizable components are, for example, cerium ions, europium ions, erbium ions, copper ions and mixtures thereof. Reducible coloring components are, for example, components that can be reduced to form color changes. Preferred reducible coloring components are metal cations, such as silver, gold, copper or a combination thereof.
[0027] The exposure device 100 comprises a chamber 103 in which a dental object 101 is placed so as to be subjected to irradiation. The exposure device 100 comprises a designated position 111 for exposing the dental object 101, such as a support surface or a holder of the dental object 101. The chamber 103 may be provided with a reflective wall in order to increase the radiation intensity at the position of the dental object 101. The radiation source 105 is arranged, for example, in a ceiling wall of the chamber 103. However, in general, the radiation source 105 may also be arranged at other positions as long as the dental object is irradiated at the desired power density.
[0028] The radiation source 105 is used to expose the dental object 101 at the designated location 111 to a wavelength greater than 350 nm and a radiation intensity greater than 10 W / cm 2 In this context, suitable radiation sources 105 are, for example, Nd-YAG lasers or Ti-sapphire lasers. When using a laser, the radiation can be directed directly and in a targeted manner onto the dental object 101 .
[0029] The radiation source 105 may also be formed by a suitable light emitting diode or a mercury vapor lamp. Generally speaking, a light emitting diode having a wavelength greater than 350 nm and a power density greater than 10 W / cm2 may be used. 2 Any radiation source 105 of radiation.
[0030] The exposure device 100 comprises an intensity adjustment device 107 for adjusting the radiation intensity of the radiation source 105. This allows the intensity of the radiation to be increased or decreased. The intensity adjustment device 107 comprises, for example, an electrical control system, with which the radiation intensity of the radiation source 105 can be changed. For this purpose, a manual adjuster can be provided, with the aid of which the user can adjust the radiation intensity of the radiation source 105. The adjuster can be formed by a mechanical interface or an electronic interface.
[0031] In addition, the exposure device 100 comprises a timer device 109 for activating the radiation source 105 for a predetermined period of time. The timer device 109 is, for example, an electrical control system, which turns on the radiation source for a predetermined period of time, such as 60 seconds. For this purpose, a manual regulator can also be provided, by means of which the user can set the time period. The regulator can be formed by a mechanical interface or an electronic interface.
[0032] The exposure device 100 may include an electronic controller, with which the radiation source 105 and other functions of the exposure device 100 can be controlled. The controller may include a microprocessor, with the aid of which various control programs can be executed. In addition, the exposure device 100 may include a heating device for heating the dental object 101 or a molding device for molding the dental object 101.
[0033] Figure 2 1 is a block diagram of a method for irradiating a dental object 101. In step S101, the dental object 101 is arranged at a designated position in a chamber 103 of an exposure device 100. In step S102, the dental object 101 is exposed to a wavelength greater than 350 nm and a power greater than 10 W / cm 2 This activates the dental object so that coloring can take place, for example during a temperature treatment. Furthermore, the method may comprise a step of manufacturing or molding the dental object or a step of heat treating the dental object.
[0034] By using radiation with a wavelength greater than 350 nm, exposure can be performed with a greater penetration depth in the material volume of the dental object 101. In addition, the effective exposure time is significantly shortened. With this radiation, glasses and glass ceramics can be exposed and activated more effectively to achieve coloring in the entire volume after heat treatment. The exposure or activation can be performed in the entire material volume of the dental object 101.
[0035] When using radiation with a wavelength greater than 350 nm, smaller, simpler devices and optics can be used, and shorter exposure times for staining can be achieved. The exposure device 100 can be used with a manufacturing process (CAM - Computer Aided Manufacturing). In this case, the exposure or activation can be performed during ablative shaping of the dental object. The exposure device 100 can be used with a thermal process, for example in a furnace. In this case, the exposure or activation can be performed during thermal tempering, crystallization or sintering.
[0036] All features explained and shown in conjunction with the various embodiments of the invention can be provided in different combinations within the subject matter of the invention in order to achieve their advantageous effects simultaneously.
[0037] All method steps may be performed by means suitable for carrying out the respective method steps.All functions performed by the features of the subject matter may be method steps of a method.
[0038] The scope of protection of the present invention is given by the claims and is not limited to the features explained in the description or shown in the drawings.
[0039] Reference numerals list
[0040] 100 Exposure device
[0041] 101 Dental Objects
[0042] 103 Chamber
[0043] 105 Radiation Source
[0044] 107 Intensity adjustment device
[0045] 109 Timer Device
[0046] 111 position.
Claims
1. An exposure device for irradiating a dental object, comprising: - a cavity for receiving said dental object; as well as - for exposing the dental object to a wavelength greater than 350 nm and a power density greater than 10 W / cm 2 source of radiation.
2. The exposure device according to claim 1, wherein: The radiation source is configured to expose the dental object to a wavelength greater than 500 nm or 700 nm.
3. The exposure apparatus according to any one of the preceding claims, wherein: The radiation source is configured to emit radiation with a power greater than 1 W.
4. The exposure apparatus according to any one of the preceding claims, wherein: The radiation source is formed by a laser, a light-emitting diode or a mercury vapor lamp.
5. The exposure device according to claim 4, wherein: The laser is a Ti-sapphire laser or a Nd-YAG laser.
6. The exposure apparatus according to any one of the preceding claims, wherein: The radiation source is configured to emit radiation in a wavelength range between 350 nm and 1800 nm, preferably between 350 nm and 1500 nm, particularly preferably between 350 and 1100 nm.
7. The exposure apparatus according to any one of the preceding claims, wherein: The exposure device includes an intensity adjustment device for adjusting the radiation intensity of the radiation source.
8. The exposure apparatus according to any one of the preceding claims, wherein: The maximum and / or average radiation intensity of the radiation source is 100W or 300W.
9. The exposure apparatus according to any one of the preceding claims, wherein: The exposure means comprises timer means for activating the radiation source for a predetermined period of time.
10. A method of irradiating a dental object, comprising the steps of: - exposing the dental object to a wavelength greater than 350 nm and a power greater than 10 W / cm 2 power density.
11. The method according to claim 10, wherein: The wavelength is greater than 700 nm.
12. The method according to claim 10 or 11, wherein: The radiated power is greater than 1W.
13. The method according to any one of claims 10 to 12, wherein: The wavelength range of the radiation emission is between 350 nm and 1800 nm, preferably between 350 nm and 1500 nm, particularly preferably between 350 nm and 1100 nm.
14. The method according to any one of claims 10 to 13, wherein: The dental object is exposed for a predetermined period of time.
15. An exposure system comprising the exposure device according to any one of claims 1 to 9 and a dental object comprising polychromatic glass and / or polychromatic glass ceramic.