CN110433005B - Aesthetic effect display color plate for repairing color-changing teeth by different art porcelain veneers and manufacturing method - Google Patents
Aesthetic effect display color plate for repairing color-changing teeth by different art porcelain veneers and manufacturing method Download PDFInfo
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- 229910052573 porcelain Inorganic materials 0.000 title claims abstract description 173
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- 238000000034 method Methods 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 20
- 230000008439 repair process Effects 0.000 claims abstract description 16
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- 229960002180 tetracycline Drugs 0.000 claims description 4
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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
- A61C19/10—Supports for artificial teeth for transport or for comparison of the colour
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F11/00—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position
- G09F11/23—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position the advertising or display material forming part of rotating members, e.g. in the form of perforations, prints, or transparencies on a drum or disc
- G09F11/232—Disc card or folded disc shaped card information display devices
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Abstract
The invention belongs to the technical field of auxiliary equipment for oral medicine, and discloses an aesthetic effect display board for repairing color-changing teeth with ceramic veneers of different processes and a manufacturing method thereof, which analyzes the influence rules of different manufacturing processes and different process parameters on the color performance and semi-permeability of the color-changing teeth repaired with ceramic veneers, the special aesthetic effect display color plate for ceramic veneer repair color-changing teeth is designed, and meanwhile, coloristic information of the color plate can be recorded into a computer, and computer simulation of the aesthetic effect is realized through programming. The invention can enable a patient to clearly see the difference of aesthetic effects of different porcelain materials and manufacturing processes and repaired by different grinding and cutting amounts of the affected teeth under a certain color change degree, and helps the patient to make reasonable selection and establish reasonable aesthetic expectations. The special display color plate for ceramic veneering can improve the aesthetic effect pre-judgment of the restoration doctor on the ceramic veneering restoration of the dark colored teeth before the operation; is convenient for the communication between the doctor and the patient before the aesthetic repair operation and is beneficial to improving the satisfaction degree of the patient on the repair effect.
Description
Technical Field
The invention belongs to the technical field of auxiliary equipment for stomatology, and particularly relates to an aesthetic effect display color plate for repairing color-changing teeth by using porcelain veneers of different technologies and a manufacturing method.
Background
Currently, the current state of the art commonly used in the industry is as follows:
The porcelain veneer is used as a minimally invasive aesthetic restoration method, not only can better preserve tooth tissues, but also has excellent aesthetic properties, and is widely applied to the aesthetic restoration of color-changing front teeth at present. The aesthetic effect of porcelain veneering restoration is not only related to the degree of abutment discoloration, but the final restoration effect is affected by the porcelain material, thickness and processing technique. At present, when the ceramic veneers are used for repairing color-changing teeth such as tetracycline teeth and dead marrow teeth with deeper dentin color, the subjective cognition of different individuals on beauty is different due to different tooth color-changing degrees, the tooth preparation amount is different, different ceramic materials and processing technologies are selected, and the ceramic veneers are greatly different in repairing effect and patient satisfaction. How to communicate effectively before operation helps the color-changing dental patient to establish a reasonable aesthetic expectation is an important link of successful aesthetic restoration, however, no visual and scientific restoration effect display tool is available in the clinical work at present.
The most similar prior art implementation scheme to the present invention is:
the VITA3D Master colorimetric plate is used for selecting the color of the prosthesis, and can be the color of normal adjacent teeth or the color selected by the patient in a personalized way.
Dentinal colorimetric plates of the Yinya company are used for determining the color of the affected teeth after tooth preparation, and an important factor of the color of the teeth after preparation is taken into consideration.
The IPS e.max color wheel is for lithium disilicate glass ceramic of the company senso, the color of the porcelain material is determined according to the target color of the restoration and the color of the tooth after preparation of the affected tooth.
In summary, the problems of the prior art are:
The colorimetric plate or the colorimetric turntable is mainly used for a doctor to communicate with a technician for manufacturing a prosthesis, plays a role in transmitting color information, and relates to the role of doctor-patient communication, namely, the selection of a target color after the prosthesis by a patient. The existing tool can not enable a patient to know what materials and processes are selected according to the color change condition of the teeth of the patient, how much tooth is prepared, and how the aesthetic effect of the repaired porcelain facing is selected. At present, for porcelain veneering restoration of color-changing teeth, a restoration doctor lacks scientific preoperative judgment on aesthetic effects after deep color-changing tooth restoration, and simultaneously lacks visual and effective doctor-patient communication tools to help patients establish reasonable aesthetic expectation.
Difficulty and meaning for solving the technical problems:
Because the manufacture of the ceramic veneer in clinic relates to various materials and processes, and the color information of the color-changing teeth is various and complex, the difficulty in realizing the technology is how to display the limited ceramic chips and the color-changing substrates in the color board, so that the color-changing dental veneer can simulate clinic well and ensure the representativeness of the color-changing dental veneer. The invention comprises three kinds of porcelain veneering porcelain tiles with different technologies commonly used in clinical work: the glass ceramic is made by hot pressing, the traditional slip-coat plastic sintering (porcelain baking) and the feldspar porcelain piece of the chair-side CAD/CAM technology, and the manufacturing process simulates the multi-layer ceramic structure and multiple times of sintering in clinical application as much as possible. For the color-changing substrate, the typical color-changing tooth information in the classical literature and dentin colorimetric plate color information of Yi-Xuejia company are adopted to comprehensively provide a certain range of color-changing substrates. Even without the same color-changing substrate as a patient's teeth, similar or analogous color-changing substrates can be used to demonstrate differences in the restoration effect of porcelain veneers of different materials, processing techniques, and thicknesses selected by the patient.
The color board can intuitively display color-changing affected teeth to patients in different degrees, and the aesthetic effect of porcelain veneering after repair is provided for communication between doctors and patients for aesthetic repair when certain materials, manufacturing processes and thicknesses are selected.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides an aesthetic effect display color board for repairing color-changing teeth by using porcelain veneers with different technologies and a manufacturing method thereof.
The invention discloses a manufacturing method of an aesthetic effect display color plate of a ceramic veneer repairing color-changing tooth with different technologies, which is realized by analyzing the influence rules of different manufacturing technologies and different technological parameters on the color performance and semi-permeability of the ceramic veneer repairing color-changing tooth, so as to obtain the manufacturing method suitable for repairing the color-changing tooth with different degrees by the ceramic veneer, and designing the special aesthetic effect display color plate for the ceramic veneer repairing according to the analysis result.
The manufacturing method of the aesthetic effect display color plate for repairing the color-changing teeth by the porcelain veneers of different technologies further comprises the steps of manufacturing cast porcelain tiles:
A cylindrical stainless steel custom mold is adopted to press GC resin sheets with the inner diameter of 12mm, the thickness of 0.35mm and the thickness of 0.60mm, and an A3-color IPS e.maxPressHT, LT and MO transparency nuclear porcelain test piece is manufactured by a lost wax-die casting method. Grinding the core ceramic chip to 0.25mm and 0.50m with 240# -1200# water sand paper with error of + -0.02 mm; after the surface of the prepared nuclear porcelain is subjected to sand blasting treatment, A3 color decoration porcelain IPS.e.max CREAM DENTIN is piled, the decoration porcelain is sintered for three times, and the decoration porcelain layer is polished to 0.25mm or 0.50mm by 240# 1200# water sand paper, wherein the error is +/-0.05 mm.
Finally, 4 transparent cast porcelain tiles are manufactured, wherein the thickness of the decorative porcelain/core porcelain is 0.25mm/0.25mm,0.5mm/0.25mm,0.25mm/0.5mm and 0.5mm/0.5mm respectively.
The manufacturing method of the aesthetic effect display color plate for repairing the color-changing teeth by the porcelain veneers of different technologies further comprises the steps of manufacturing porcelain tiles:
A silicone rubber impression material is used for preparing an impression of a cylindrical stainless steel die with the diameter of 12mm, a die is cast by using a loose air refractory material, and two ends of the die are polished to be smooth by using abrasive paper. And stacking IPS d.SIGNA3 color low-temperature color-shading ceramic powder and body ceramic powder on a fire-resistant model sequentially by adopting a layering stacking method, wherein the thickness of the color-shading ceramic is 0.10mm, and the error is +/-0.05 mm. The ceramic body is sintered for three times, and after the preparation, the total thickness of the ceramic tile is polished to 0.50mm and 0.75mm by 240# 1200 water sand paper.
The manufacturing method of the aesthetic effect display color plate for repairing the color-changing teeth by the porcelain veneers of different technologies further comprises the steps of manufacturing CAD-CAM porcelain chips:
a3 color VitablocsMarkII LT ceramic block is selected, and CEREC software is adopted to design and manufacture three CAD-CAM ceramic chips with the diameter of 12mm, the thickness of 0.50mm, 0.75mm and 1.00 mm.
The manufacturing method of the aesthetic effect display color board for repairing the color-changing teeth by the porcelain veneers of different technologies further comprises the steps of manufacturing a color-changing substrate:
the color-value-variable paper board is formed by printing and plastic packaging of paper boards with different color values, and the diameter is 15mm; wherein 4 color-changing substrates are manufactured by adopting the chromaticity value of the simulated tetracycline teeth; light gray: l67.12, a 4.19, b 3.22; deep gray: l61.27, a 5.3, b 0.58; bright red: l63.88, a 9.35, b 4.6; dark red: l59.21, a 11.71, b 3.77; the disc test piece (diameter 12mm, thickness 2 mm) was manufactured by using 9 kinds of resin ND1-ND9, and another 9 kinds of color-changing substrates were manufactured by printing and plastic packaging according to the measured chromaticity value.
Another object of the present invention is to provide an aesthetic effect display color plate for repairing a color-changing tooth by using different process porcelain veneers manufactured by the manufacturing method, wherein the aesthetic effect display color plate for repairing a color-changing tooth by using different process porcelain veneers is provided with:
At least two layers of display panels;
the surface layer of the display color board is connected with the bottom layer of the display color board through the middle rotating shaft, and the bottom layer of the display color board is inlaid with color-changing substrates with different degrees.
Further, cast porcelain tiles, porcelain tiles and CAD-CAM porcelain tiles with different thicknesses are inlaid on the surface layer of the display color plate.
Another object of the present invention is to provide a simulation method of an aesthetic effect display color plate for repairing color-changed teeth with porcelain veneers of different technologies, the simulation method comprising:
(1) Inputting color information of the ceramic chips showing different processes, materials and thicknesses of the surface layers of the color plates into a computer, and establishing a simulated ceramic veneer library;
(2) Inputting color information of different color-changing substrates of the bottom layer of the display color board into a computer, and establishing a simulated color-changing dental base;
(3) The selection and overlapping of the simulated porcelain veneering and the color-changing teeth are realized by writing a computer program;
(4) Can accurately reproduce the color information of different simulated porcelain veneers overlapped with different color-changing teeth, and is used for doctors and patients to perform preoperative simulation.
Another object of the present invention is to provide an oral medical auxiliary device equipped with an aesthetic effect display color plate for repairing color-changed teeth with porcelain veneers of different technologies.
In summary, the invention has the advantages and positive effects that:
The invention comprises three kinds of porcelain veneering porcelain tiles with different technologies commonly used in clinical work: glass ceramic by hot-pressing casting, traditional slip-coat plastic sintering (porcelain baking) and feldspar porcelain piece by a CAD-CAM process beside a chair. The ceramic casting material can endow the prosthesis with more natural and vivid aesthetic effects due to the excellent semi-permeability of the glass ceramic, but for the abutment with deeper color change, the insufficient color shading capability of the ceramic casting material can lead to the penetration of the color-changing substrate, and the aesthetic effects are affected. The porcelain tile has better covering power to the color-changing substrate, but has relatively poorer permeability because the color-shielding porcelain layer with good color shielding effect can be selected to cover the color-changing substrate and the porcelain material with different permeability is piled on the surface to carry out layered sintering. The CAD-CAM made porcelain facing materials are mainly used in two types at present, one type is glass ceramics, and the aesthetic effect is similar to that of cast porcelain, so that the ceramic facing materials are not repeated, vitablocs Mark II are selected, and the ceramic facing materials belong to feldspar porcelain with good permeability. The CAD-CAM tile offers the outstanding advantage of being convenient and fast for computer-aided design and computer-aided manufacturing. The ceramic tile of the invention not only comprises the common process for manufacturing ceramic veneers in clinic and the representative ceramic materials, but also simulates the actual operation in clinic as far as possible in the manufacturing process.
The 13 color-changing substrates in the invention integrate the information of color-changing teeth in dentin colorimetric plates of classical literature and Yi-Dijia corporation. Through the visual display of different ceramic chips on different color-changing substrates, a patient can clearly see that the grinding and cutting amount of the affected teeth is different under a certain color-changing degree, different ceramic materials and processes are selected, and the difference of color effects after repair is achieved, so that the patient is helped to select repair materials and processes, and reasonable aesthetic expectation values are established, and communication between doctors and patients before aesthetic repair is facilitated.
The special display color board for porcelain veneering can improve the aesthetic effect prejudgment of a restoration doctor on the porcelain veneering restoration of the deeply-colored teeth, and the invention fills up the blank of a doctor-patient communication tool when the porcelain veneering restoration of the color-changed teeth, thereby being beneficial to improving the satisfaction degree of patients.
Drawings
FIG. 1 is a schematic view of a color board for demonstrating the aesthetic effect of repairing color-changed teeth according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram showing a color board bottom layer according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram showing a surface layer of a color board according to an embodiment of the present invention.
In the figure: 1. displaying the surface layer of the color plate; 2. displaying a color board bottom layer; 3. a color-changing substrate; 4. casting porcelain tiles; 5. porcelain tile; 6. CAD-CAM ceramic tile; 7. and a middle rotating shaft.
FIG. 4 shows the color difference value ΔE 00 1 (color shading force) of cast porcelain test pieces with different thickness of the nuclear decoration porcelain provided by the embodiment of the invention; in the figure: delta represents that there is no statistical significance for the difference between the two groups.
Fig. 5 shows the color difference value Δe 00 2 (color matching) of cast porcelain test pieces with different thickness of the core porcelain according to the embodiment of the present invention.
FIG. 6 is a graph showing the semi-permeability of cast porcelain test pieces of different thickness for a decorated porcelain according to an embodiment of the present invention.
Fig. 7 shows color difference values Δe 00 1 (color shading force) of porcelain test pieces of different porcelain layer thicknesses according to an embodiment of the present invention.
Fig. 8 shows color difference values Δe 00 2 (color matching) of porcelain test pieces of different porcelain layer thicknesses according to an embodiment of the present invention.
FIG. 9 is a schematic diagram showing the semi-permeability of porcelain test pieces with different porcelain layer thicknesses according to an embodiment of the present invention.
FIG. 10 shows the color difference values ΔE 00 1 (shading force) of CAD-CAM test pieces of different thicknesses according to an embodiment of the present invention.
FIG. 11 shows color difference values ΔE 00 2 (color matching) of CAD-CAM test pieces of different thicknesses according to an embodiment of the present invention.
FIG. 12 is a graph showing the semi-permeability of CAD-CAM samples of different thicknesses provided by embodiments of the present invention.
Detailed Description
For a further understanding of the invention, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings.
Aiming at the problems existing in the prior art, the invention provides an effect display color board for repairing color-changing teeth by using porcelain veneers with different technologies and a manufacturing method thereof, and the invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 3, the aesthetic effect display color board for repairing color-changing teeth with porcelain veneers of different technologies provided by the embodiment of the invention comprises: the color board comprises a color board bottom layer 1, a color board surface layer 2, a color changing substrate 3, cast porcelain tiles 4, porcelain tiles 5 and CAD-CAM porcelain tiles 6.
The diameter of the bottom layer 1 of the display color plate is larger than that of the surface layer 2 of the display color plate, and the two layers of structures are connected through a middle rotating shaft 7.
The color board bottom layer 1 is shown embedded with color-changing substrates 3 with different degrees, and the edges are used for marking different color-changing substrates.
The surface layer 2 of the display color plate is inlaid with hot-pressed cast ceramic chips (namely cast ceramic chips 4 for short), powder slurry plastic-coated sintered ceramic chips (namely baked ceramic chips 5 for short) and CAD-CAM ceramic chips 6 which are made of different ceramic materials and manufactured by processing technologies. Through rotating the color board, the colorimetry and semi-permeability effects of different ceramic chips placed on different color-changing backgrounds can be displayed.
The color-changing substrate 3 is made of printing plastic package paperboards with different chromaticity values, and the diameter is 15mm. A disc test piece (diameter is 12mm, thickness is 2 mm) is manufactured by adopting IvoclarVivadent company 9 types of resin ND1-ND9, 9 color-changing substrates are manufactured by printing and plastic packaging according to the measured chromaticity value, and the other 4 color-changing substrates are manufactured by adopting the chromaticity value of tetracycline teeth simulated in Pan Qi and other researches (light gray: L *67.12,a*4.19,b* 3.22; dark gray: L *61.27,a*5.3,b* 0.58.58; bright red: L *63.88,a*9.35,b* 4.6.6; dark red: L *59.21,a*11.71,b* 3.77.77).
The surface layer 2 of the display color plate is inlaid with 17 cast porcelain tiles 4, porcelain tiles 5 and CAD-CAM porcelain tiles 6 (with the diameter of 12 mm) with different thicknesses, and the color numbers are all A3 color. The cast ceramic tile 4 is formed by two layers of hot-pressing cast core ceramic IPS e.max Press A3 (three transparency of HT, LT and MO) and surface layer sintering IPS e.maxceram dentinA decorative ceramic, and four thickness cast ceramic tiles of 0.25mm/0.25mm,0.50mm/0.25mm, 0.25mm/0.50mm and 0.50mm/0.50mm are manufactured according to the thickness of the decorative ceramic/core ceramic.
The porcelain tile 5 (diameter 12 mm) is formed by layered sintering of an IPS d.SIGN low-temperature porcelain powder color-shading porcelain layer and a body porcelain layer, and two thickness porcelain tiles of 0.1/0.4mm and 0.1/0.65mm are manufactured according to the thickness of the color-shading porcelain/the body porcelain.
The CAD-CAM ceramic chip 6 is made of A3 color Vitablocs Mark II LT ceramic blocks, and three CAD-CAM ceramic chips with the diameter of 12mm, the thickness of 0.50mm, 0.75mm and 1.00mm are designed and manufactured by CEREC software.
The invention is further described below in connection with specific embodiments.
EXAMPLE 1 cast porcelain tile manufacture
A cylindrical stainless steel custom mold is adopted to press GC resin sheets with the inner diameter of 12mm, the thickness of 0.35mm and the thickness of 0.60mm, and an A3-color IPS e.maxPressHT, LT and MO transparency nuclear porcelain test piece is manufactured by a lost wax-die casting method. Grinding the core ceramic chip to 0.25mm and 0.50m with 240# -1200# water sand paper with error of + -0.02 mm; after the surface of the prepared nuclear porcelain is subjected to sand blasting treatment, A3 color decoration porcelain IPS.e.max CREAM DENTIN is piled, the decoration porcelain is sintered for three times, and the decoration porcelain layer is polished to 0.25mm or 0.50mm by 240# 1200# water sand paper, wherein the error is +/-0.05 mm.
Finally, 4 transparent cast porcelain tiles are manufactured, wherein the thickness of the decorative porcelain/core porcelain is 0.25mm/0.25mm,0.5mm/0.25mm,0.25mm/0.5mm and 0.5mm/0.5mm respectively.
EXAMPLE 2 preparation of porcelain tile
A silicone rubber impression material is used for preparing an impression of a cylindrical stainless steel die with the diameter of 12mm, a loose air refractory material is used for casting the die, and two ends of the die are polished to be smooth by using abrasive paper. And stacking IPS d.SIGNA3 color low-temperature color-shading ceramic powder and body ceramic powder on a fire-resistant model sequentially by adopting a layering stacking method, wherein the thickness of the color-shading ceramic is 0.10mm, and the error is +/-0.05 mm. The ceramic body is sintered for three times, and after the preparation, the total thickness of the ceramic tile is polished to 0.50mm and 0.75mm by 240# 1200 water sand paper.
EXAMPLE 3 CAD-CAM tile fabrication
A3 color VitablocsMarkII LT ceramic block is selected, and CEREC software is adopted to design and manufacture three CAD-CAM ceramic chips with the diameter of 12mm, the thickness of 0.50mm, 0.75mm and 1.00 mm.
Example 4-simulation method of porcelain veneering to repair stained teeth an aesthetic effect display stain comprises:
(1) Inputting color information of the ceramic chips showing different processes, materials and thicknesses of the surface layers of the color plates into a computer, and establishing a simulated ceramic veneer library;
(2) Inputting color information of different color-changing substrates of the bottom layer of the display color board into a computer, and establishing a simulated color-changing dental base;
(3) The selection and overlapping of the simulated porcelain veneering and the color-changing teeth are realized by writing a computer program;
(4) Can accurately reproduce the color information of different simulated porcelain veneers overlapped with different color-changing teeth, and is used for doctors and patients to perform preoperative simulation.
How to determine the current manufacturing method is to obtain the manufacturing method suitable for repairing the color-changing teeth with different degrees by analyzing the influence rules of different manufacturing processes and different process parameters on the color-shading force and the semi-permeability of the color-changing teeth of the porcelain veneer repair. The following is a process of the present invention, which has been studied and tested for a long time.
1. Study of hot-pressed cast glass ceramic veneers
And (3) manufacturing cast porcelain test pieces with different nuclear decoration porcelain thicknesses by adopting IPS e.max Press LTA3 porcelain blocks and IPS e.maxceram dentin A porcelain powder (IvoclarVivadent, liechtens), analyzing the color shading force and color matching performance of the cast porcelain test pieces on different color-changing substrates, and comparing the semi-permeability of the different cast porcelain test pieces.
1. Shading force of cast porcelain test pieces with different nuclear decoration porcelain thicknesses is relatively high
As shown in fig. 4, at a certain thickness of the porcelain, the color difference Δe 00 increases with an increase in the thickness of the core porcelain. Under certain nuclear porcelain thickness, the color difference delta E 00 1 of the porcelain with the thickness of 0.25mm is smaller than that of the porcelain with the thickness of 0.50 mm. At all background colors, when the thickness of the decorative porcelain is 0.50mm, the thickness of the nuclear porcelain is increased from 0.25mm to 0.50mm, and no statistical difference (P is more than 0.01) exists between the color differences delta E 00 1.
2. Color matching of cast porcelain test pieces with different nuclear decoration porcelain thicknesses on different color-changing substrates
As shown in fig. 5, when the thickness of the decorative porcelain is the same, only the color difference Δe 00 2 of the increase in the thickness of the core porcelain increases in the light gray background, and the color difference Δe 00 2 of the increase in the thickness of the core porcelain decreases in the rest of the background. When the thickness of the nuclear porcelain is the same, except for the light gray background, the color difference delta E 00 2 of the groups with the thickness of 0.25mm of the porcelain in the rest background is larger than that of the groups with the thickness of 0.50 mm. Delta E 00 2 is minimal when the substrate is yellow; bright red, dark gray and dark red; Δe 00 2 is the largest when the substrate is light grey. When the thickness of the decorative porcelain is 0.25mm, the difference of delta E 00 2 between the 0.50mm group and the 0.75mm group of the nuclear porcelain has no statistical significance (P is more than 0.01).
3. Semi-permeability comparison of cast porcelain test pieces with different nuclear decoration porcelain thicknesses
As shown in FIG. 6, as the thickness of the core porcelain or the ornamental porcelain increases, the semipermeable properties of the test piece decrease. Analysis of variance showed that the semi-permeability differences between the remaining groups were statistically significant (P < 0.01) except for no statistical differences between 0.50mm/0.50mm and 0.25mm/0.75mm semi-permeability (P=.153).
Second, the color properties and the semi-permeability of the porcelain test pieces with different porcelain layer thicknesses are compared
And manufacturing porcelain test pieces with different thicknesses by adopting IPS d.SIGNA3 color low-temperature color masking porcelain powder and body porcelain powder. And analyzing the color shading force and color matching property of the ceramic material on different color-changing substrates, and comparing the semi-permeability of different ceramic test pieces.
1. Shading power of porcelain test pieces with different porcelain layer thicknesses on different color-changing substrates is relatively high
As shown in FIG. 7, the color difference value between the 0.65mm/0.10mm group and the 0.55mm/0.20mm group is larger than that between the 0.40mm/0.10mm group and the 0.30mm/0.20mm group. The difference of the test pieces delta E 00 1 under different thickness groups and different backgrounds has statistical significance (P is smaller than 0.01), and the interaction of the thickness and the background color obviously affects delta E 00 1 after the porcelain veneers are repaired. Under a yellowish background, the difference between the chromatic aberration delta E 00 1 among all thickness groups has no statistical significance (P is more than 0.01); the difference between the two groups of 0.50mm total thickness in the rest of the background was not statistically significant (P > 0.01).
2. Color matching property of porcelain test pieces with different porcelain layer thicknesses on different color-changing substrates
As shown in FIG. 8, the differences among the color differences of the porcelain test pieces with different thicknesses under different background colors are not statistically significant (P > 0.01), and the thicknesses have no interaction with the background colors (P > 0.01). All color difference values Δe 00 2 are smaller than 1.25. The color difference delta E 00 2 of the porcelain test piece with all the thickness after repair is within the clinically unrecognizable range (delta E 00 2 is less than or equal to 1.25).
3. Semi-permeability comparison of porcelain test pieces with different porcelain layer thicknesses
As shown in FIG. 9, the semi-permeability values of the porcelain test pieces of each group are low, and the semi-permeability values of the porcelain test pieces of different thickness combinations have no statistical significance (P is more than 0.01).
Studies on three. VitablocsMarkII LTCAD-CAM veneers
CAD-CAM test pieces with different thicknesses are manufactured by adopting VitablocsMarkII LT ceramic blocks, the color shading force and the color matching performance of the CAD-CAM test pieces on different color-changing substrates are analyzed, and the semi-permeability of the CAD-CAM test pieces with different thicknesses is compared.
1. Shading ratio of CAD-CAM test pieces with different thicknesses to different color-changing substrates
As shown in FIG. 10, as the thickness of the CAD-CAM test piece increases, the hiding power of the test piece against different color-changing substrates increases (P < 0.01).
2. Color matching comparison of CAD-CAM test pieces with different thicknesses on different color-changing substrates
As shown in FIG. 11, the CAD-CAM test piece has the best color matching in the yellow base, and the color difference is in the clinically acceptable range; the color match is the worst against a dark red background.
3. Semi-permeability comparison of CAD-CAM test pieces of different thicknesses
As shown in FIG. 12, the CAD-CAM test piece has a semi-permeability between that of the cast and porcelain test pieces. As the thickness of the test piece increases, the semi-permeability is significantly reduced (P < 0.01)
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the invention in any way, but any simple modification, equivalent variation and modification of the above embodiments according to the technical principles of the present invention are within the scope of the technical solutions of the present invention.
Claims (8)
1. The manufacturing method of the aesthetic effect display color plate of the ceramic veneer repair color-changing teeth with different technologies is characterized in that the manufacturing method of the aesthetic effect display color plate of the ceramic veneer repair color-changing teeth with different technologies is to obtain the manufacturing method suitable for the ceramic veneer repair color-changing teeth with different degrees by analyzing the influence rules of different manufacturing technologies and different technological parameters on the color properties and the semi-permeability of the ceramic veneer repair color-changing teeth, and design the special aesthetic effect display color plate for the ceramic veneer repair according to analysis results;
the manufacturing method of the aesthetic effect display color board for repairing the color-changing teeth by the porcelain veneers of different technologies comprises the following steps:
(1) Manufacturing a cast porcelain tile;
(2) Manufacturing porcelain tiles;
(3) Manufacturing CAD-CAM ceramic chips;
(4) Manufacturing a color-changing substrate;
And (3) manufacturing the color-changing substrate: the color-value-variable paper board is formed by printing and plastic packaging of paper boards with different color values, and the diameter is 15mm; wherein 4 color-changing substrates are manufactured by adopting the chromaticity value of the simulated tetracycline teeth; light gray: l67.12, a 4.19, b 3.22; deep gray: l61.27, a 5.3, b 0.58; bright red: l63.88, a 9.35, b 4.6; dark red: l59.21, a 11.71, b 3.77; adopting 9 types of resin ND1-ND9 to manufacture a disc test piece, and printing and molding according to the measured chromaticity value to manufacture other 9 color-changing substrates; the diameter of the disc test piece is 12mm, and the thickness of the disc test piece is 2mm;
The aesthetic effect of the manufactured porcelain veneering repairing color-changing teeth shows that the bottom layer of the color board is a color-changing substrate with different degrees, and the surface layer of the color board is composed of cast porcelain tiles with different thicknesses, baked porcelain tiles and CAD-CAM porcelain tiles.
2. The method for manufacturing the aesthetic effect display color plate for repairing the color-changing teeth by the porcelain veneers of different technologies according to claim 1, wherein the manufacturing of the cast porcelain piece is characterized in that:
Pressing GC resin sheets with the inner diameter of 12mm, the thickness of 0.35mm and the thickness of 0.60mm by adopting a cylindrical stainless steel custom mold, and manufacturing three transparency nuclear porcelain test pieces of A3 color IPS e.maxPressHT, LT and MO by using a lost wax-die casting method; grinding the core ceramic chip to 0.25mm and 0.50m with 240# -1200# water sand paper with error of + -0.02 mm; piling A3 color decoration porcelain IPS.e.max CREAM DENTIN on the surface of the manufactured nuclear porcelain after sand blasting treatment, finishing the decoration porcelain by three times of sintering, and polishing the decoration porcelain layer to 0.25mm or 0.50mm by 240# 1200 water sand paper with the error of +/-0.05 mm;
Finally, 4 transparent cast porcelain tiles are manufactured, wherein the thickness of the decorative porcelain/core porcelain is 0.25mm/0.25mm,0.5mm/0.25mm,0.25mm/0.5mm and 0.5mm/0.5mm respectively.
3. The method for manufacturing the aesthetic effect display color plate for repairing the color-changing teeth by the porcelain veneers of different technologies according to claim 1, wherein the manufacturing of the porcelain tiles is characterized in that:
Using a silicone rubber impression material to prepare an impression of a cylindrical stainless steel mould with the diameter of 12mm, casting the mould by using a loose air refractory material, and polishing two ends of the mould with water sand paper to be smooth; stacking IPSD.SIGNA3 color low-temperature color-shading ceramic powder and body ceramic powder on a refractory model by adopting a layering stacking method, wherein the thickness of the color-shading ceramic is 0.10mm, and the error is +/-0.05 mm; the ceramic body is sintered for three times, and after the preparation, the total thickness of the ceramic tile is polished to 0.50mm and 0.75mm by 240# 1200 water sand paper.
4. The method for manufacturing the aesthetic effect display color plate for repairing the color-changing teeth by the porcelain veneers of different technologies according to claim 1, wherein the CAD-CAM porcelain chip is manufactured by the following steps:
A3 color VitablocsMarkII LT ceramic block is selected, and CEREC software is adopted to design and manufacture three CAD-CAM ceramic chips with the diameter of 12mm, the thickness of 0.50mm, 0.75mm and 1.00 mm.
5. An aesthetic effect display color plate for repairing color-changing teeth by using different art porcelain veneers manufactured by the manufacturing method of claim 1, which is characterized in that the aesthetic effect display color plate for repairing color-changing teeth by using different art porcelain veneers is provided with:
At least two layers of display panels;
the surface layer of the display color board is connected with the bottom layer of the display color board through the middle rotating shaft, and the bottom layer of the display color board is inlaid with color-changing substrates with different degrees.
6. The aesthetic effect display color plate for repairing color-changing teeth with different art porcelain veneers according to claim 5, wherein the surface layer of the display color plate is inlaid with cast porcelain tiles, baked porcelain tiles and CAD-CAM porcelain tiles with different thicknesses.
7. A method of simulating an aesthetic effect display color plate for repairing a stained tooth with porcelain veneers of different art as defined in claim 5, said method comprising:
(1) Inputting color information of the ceramic chips showing different processes, materials and thicknesses of the surface layers of the color plates into a computer, and establishing a simulated ceramic veneer library;
(2) Inputting color information of different color-changing substrates of the bottom layer of the display color board into a computer, and establishing a simulated color-changing dental base;
(3) The selection and overlapping of the simulated porcelain veneering and the color-changing teeth are realized by writing a computer program;
(4) Can accurately reproduce the color information of different simulated porcelain veneers overlapped with different color-changing teeth, and is used for doctors and patients to perform preoperative simulation.
8. An oral medical auxiliary device provided with an aesthetic effect display color plate for repairing color-changing teeth with different art porcelain veneers according to claim 5.
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