CN115120379A - Colorimetric method of zirconia veneering - Google Patents
Colorimetric method of zirconia veneering Download PDFInfo
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- CN115120379A CN115120379A CN202210767315.3A CN202210767315A CN115120379A CN 115120379 A CN115120379 A CN 115120379A CN 202210767315 A CN202210767315 A CN 202210767315A CN 115120379 A CN115120379 A CN 115120379A
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- zirconia
- color
- colorimetric
- veneering
- abutment
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- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 title claims abstract description 144
- 238000004737 colorimetric analysis Methods 0.000 title claims abstract description 29
- 230000003631 expected effect Effects 0.000 claims abstract description 7
- 241001085205 Prenanthella exigua Species 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 19
- 230000000694 effects Effects 0.000 claims description 17
- 210000000214 mouth Anatomy 0.000 claims description 8
- 239000003086 colorant Substances 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 4
- 239000007844 bleaching agent Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 238000004891 communication Methods 0.000 abstract description 4
- 230000019771 cognition Effects 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000000919 ceramic Substances 0.000 description 8
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 6
- 229910001928 zirconium oxide Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000002241 glass-ceramic Substances 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 210000004283 incisor Anatomy 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/20—Repairing attrition damage, e.g. facets
Abstract
The invention provides a colorimetric method of a zirconia veneer, which can accurately determine the color of the needed veneer through 4 steps of comparison by utilizing a color selection guide of the zirconia veneer and a veneer colorimetric tool box according to the expected effect; the colorimetric method can visually see the expected effect before the preparation of the final finished product is finished, unifies the cognition of clinical end and technician end on patient cases, reduces the communication problem of medical-patient-skill, reduces the manufacturing difficulty and rework cost of the veneers, is simple to operate, is easy to realize, and is beneficial to production and application.
Description
Technical Field
The invention belongs to the technical field of dental restoration, and particularly relates to a colorimetric method of a zirconia veneer.
Background
Loss or defects of the tooth body are common cases in clinical oral treatment. In dental restorative treatments, the restoration should have good aesthetic properties, in addition to certain strength, wear resistance, corrosion resistance and biocompatibility. Particularly, in recent years, with the progress of national living standards, the requirement of a patient on the degree of closeness of a dental restoration to a natural tooth in appearance is higher and higher, for example, the color of the natural tooth has the characteristic of gradually changing from the neck of the tooth to the incisal end, and the dental restoration is also required to have the same characteristic.
At present, the veneer repairing material who commonly uses glass ceramic class material as the main, in clinical oral treatment, the doctor selects the nearest color number after using dentistry colorimetric plate and patient's natural tooth's colour to compare, exchange with the technician of preparation prosthesis, wherein, dentistry colorimetric plate comprises a plurality of color comparison dental lamina subassembly, every color comparison dental lamina subassembly includes color comparison dental lamina and the color comparison handle that is used for installing the color comparison dental lamina, the color comparison dental lamina has a plurality of colour, openly be full crown lip facial map of middle incisor, be used for comparing with the colour of patient's natural tooth. The consistency of the color of the colorimetric dental film with the color of the restoration becomes an important factor influencing the aesthetic effect of tooth restoration. In order to manufacture a restoration body with vivid shape and consistent color and luster with the natural teeth of a patient, the colorimetric dental film with consistent material, color and light transmittance with the restoration body is necessary.
In the early stage of the appearance of the zirconia all-ceramic prosthesis, the zirconia ceramics had unsatisfactory aesthetic properties such as transparency and glossiness and had a single color, and thus, zirconia was generally used as a base material. The exterior of the substrate also requires baking of multiple layers of facing porcelain to achieve the desired aesthetic effect. At present, VITA classic A1-D4 color plates (VITA classic 16 color ratio color plates) and VITAToothguide3D-MASTER color plates (VITA3D color ratio color plates) which are commonly adopted in the market are both made of facing porcelain, and are suitable for carrying out color comparison in the manufacture of the zirconium oxide substrate-facing porcelain structure restoration.
In recent years, with diversification of color and improvement of light transmission property of zirconia ceramics, it has become possible to omit facing ceramics for direct use in veneering repair. However, because the zirconia ceramic material is completely different from the colorimetric dental film in the existing colorimetric plate, the color and the light transmittance of the zirconia ceramic material are greatly different, and the accurate color comparison of the zirconia ceramic restoration is difficult to realize clinically by adopting the existing colorimetric plates such as a VITACClassification A1-D4 colorimetric plate or a VITAToothguide3D-MASTER colorimetric plate.
In conclusion, the colorimetric method suitable for the zirconia ceramic is of great significance to the development of dental restoration.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a colorimetric method of a zirconia veneering, which realizes accurate colorimetric of a zirconia ceramic restoration.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a colorimetric method of a zirconia veneering, which comprises the following steps:
(1) selecting an expected effect for assisting the selection of the color and the thickness of the zirconia veneering at the later stage;
(2) comparing the veneering colorimetric tool box with teeth in the oral cavity to obtain the color of the abutment;
(3) determining a color selection area through a zirconia veneering color selection guide according to the color of the abutment;
the color selection guide is a standard card taking the color of the abutment as a vertical coordinate and comprehensive data of the material type and the material base thickness of the veneering as a horizontal coordinate;
(4) according to the color selection area determined in the step (3), reducing the color selection range by using a zirconia veneering colorimetric plate and determining the thickness size;
(5) determining the final color of the zirconia facing by using a facing colorimetric tool box;
(6) and processing the zirconia veneers according to the recorded final material data, color data and thickness dimension data.
At present, the existing colorimetric method for the glass ceramic veneer is rough, the veneer scheme can be determined only by abutment colorimetric, so that a large error exists between a finished product and an expected effect, the communication between a doctor and a patient and a technician and the rework cost are increased, and the colorimetric plate for the glass ceramic veneer cannot be suitable for the zirconia ceramic veneer. The colorimetric method is simple to operate, easy to realize and beneficial to production and application.
The following technical solutions are preferred technical solutions of the present invention, but not limited to the technical solutions provided by the present invention, and technical objects and advantageous effects of the present invention can be better achieved and achieved by the following technical solutions.
As a preferable technical scheme of the invention, the veneered colorimetric kit in the step (2) comprises an abutment colorimetric plate and a zirconia veneer.
Preferably, the step (2) uses the abutment shade guide to compare with the teeth in the oral cavity to obtain the color of the abutment.
Preferably, the abutment shade guide comprises 12 colours, a1, a2, A3, a3.5, a4, B2, B4, C2, D2, ND3, ND8 and ND9 respectively.
In the invention, the abutment colorimetric plates are all made of resin materials, and the 12 abutment colors are all industry standard colors, which are not described again.
As a preferred technical solution of the present invention, the ordinate of the color selection guide of zirconia veneering in step (3) includes 7 categories of abutment colors, which are Bleach, a1, a2, A3, a3.5, a4 and Brown dark in sequence, wherein a2, B2, C2 and D2 are all categorized as a2 category, A3 and ND3 are all categorized as A3 category, a4 and B4 are all categorized as a4 category, and ND8 and ND9 are all categorized as Brown dark category.
Preferably, the abscissa of the zirconia veneering color selection guide of step (3) comprises 8 categories, which are sequentially white due (EW), white due (BW), high brightness (HV), low brightness (LV), white due gradient (BWM), high brightness gradient (HVM), low brightness gradient (LVM), and Hollywood White (HW).
As a preferred technical scheme of the invention, in the color selection guide of the zirconia veneering in the step (3), each category in the abscissa comprises 2 material base thicknesses which are 0.4mm and 0.6mm respectively.
In the color selecting guide of the zirconia facing of the invention, when the type of the facing material and the base thickness of the material are determined, the color is actually determined. Therefore, in the grids formed by the horizontal and vertical coordinates of the color selection guide, each grid shows the final effect of taking the color of the abutment as the base and pasting the corresponding zirconia veneering on the surface. The patient can select the desired effect on the color selection guide according to the own requirements (such as brightness, naturalness, darkness and the like) on the basis of the color of the abutment, and then carry out the next comparison.
As a preferred technical scheme of the invention, the zirconia veneering color selection guide in the step (3) comprises 3 brightness areas, namely a bright white area, a natural area and a color shading area.
In the preferred technical scheme of the invention, in the zirconia veneering color selection guide in the step (3), the bright white area is an area which is determined by the colors of the abutment Bleach-A3 and has the abscissa type of extremely white to high brightness;
preferably, in the color selection guide of the zirconia veneering of the step (3), the natural region is an area determined by the color of the abutment Bleach-A3, the abscissa type is low brightness to hollywood white;
preferably, in the color selection guide for zirconia veneering of step (3), the shaded area is an area defined by an abutment color A3.5-Brown dark, with the abscissa category being from extremely white to Hollywood white.
The division of the three regions can help a doctor and a patient to quickly lock the selection range, and time is saved.
As a preferred technical solution of the present invention, the zirconia veneered colorimetric plate in step (4) at least includes 8 categories, which are respectively Extreme White (EW), Bright White (BW), high brightness (HV), low brightness (LV), bright white gradient (BWM), high brightness gradient (HVM), low brightness gradient (LVM), and Hollywood White (HW).
In the present invention, the zirconia overlaid colorimetric plate includes not only the above-mentioned 8 types but also A1 and B12 types.
As a preferable technical solution of the present invention, the zirconia veneered colorimetric plate of step (4) includes an arc-shaped plate and a base for supporting the arc-shaped plate.
As a preferable technical solution of the present invention, the arc-shaped plate gradually becomes thicker from top to bottom, and the thinnest part of the upper end is not more than 0.4mm, such as 0.35mm, 0.36mm, 0.37mm, 0.38mm, 0.39mm or 0.4 mm; the thickest part of the lower end is not less than 0.7mm, for example, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm or 1.2mm, and the above numerical values are not limited to the listed numerical values, and other numerical values not listed in the respective numerical values are also applicable.
According to the invention, the arc colorimetric plates are more attached to natural teeth, so that the colorimetric effect is more accurate, the whole thickness change comprises 0.4mm and 0.6mm, and the thickness of a patient can be confirmed by one plate without additionally preparing colorimetric plates with two thickness specifications.
In addition, the bottom of the arc-shaped plate needs to be connected and fixed with the bottom support, so that the lower end of the arc-shaped plate has partial length covered by the bottom support, but the exposed part which can be used for color comparison is only required to be 0.4mm-0.6mm inclusive.
As a preferable technical scheme of the invention, the more specific operation of the step (5) comprises the following steps: and (5) according to the color selection range and the thickness size reduced in the step (4), pasting the corresponding zirconia veneers on the selected abutment colorimetric plates, and determining the final color of the zirconia veneers through the display of the overall effect.
Compared with the prior art, the invention has the following beneficial effects:
the colorimetric method for the zirconia veneering can visually see the expected effect before the final finished product is prepared, unifies the cognition of clinical end and technician end on patient cases, reduces the communication problem of medical, patient and skill, and reduces the manufacturing difficulty and rework cost of the veneering. The colorimetric method is simple to operate, easy to realize and beneficial to production and application.
Drawings
FIG. 1 is a photograph of a tooth in a patient's mouth before restoration according to example 1 of the present invention.
Fig. 2 is a schematic structural diagram of an abutment colorimetric plate provided in example 1 of the present invention.
Fig. 3 is a color selection guide picture provided in embodiment 1 of the present invention.
Fig. 4 is a schematic structural diagram of a zirconia overlaid colorimetric board provided in example 1 of the present invention.
Fig. 5 is a photograph of teeth in a patient's mouth after restoration as provided in example 1 of the present invention.
Wherein, 1-an abutment part, 2-a supporting part, 3-an arc plate and 4-a bottom support.
Detailed Description
In order to better explain the present invention and to facilitate the understanding of the technical solutions of the present invention, the present invention is further described in detail below. However, the following examples are only simple examples of the present invention and do not represent or limit the scope of the present invention, which is defined by the claims.
The following are typical but non-limiting examples of the invention:
example 1:
this example provides a colorimetric method of zirconia-veneering, the colorimetric method comprising the steps of:
(1) the patient appeals to: the problem that the existing teeth are yellow is solved, the zirconium oxide veneering is adopted for restoration, and the effect of expected restoration completion of a patient is bright and white; wherein, the photo of the teeth in the oral cavity of the patient before restoration is shown in figure 1;
(2) in combination with the expectation of the patient, the doctor compares the natural teeth of the patient with the abutment colorimetric plate in the veneering colorimetric tool box to obtain the color of the abutment of the patient as A1; wherein, the schematic diagram of the abutment colorimetric plate structure is shown in fig. 2, the abutment colorimetric plate comprises an abutment part 1 and a supporting part 2;
(3) based on the patient's abutment color a1 and the desired effect (light, white), the physician locks in the color selection area, i.e. the selectable material and thickness ranges, through the zirconia clinical color selection guide, including: zirconium oxide veneered restorations with 0.4mm and 0.6mm thickness made of Extreme White (EW), Bright White (BW) and high lightness (HV); wherein, the color selection guide is shown in fig. 3;
(4) according to the color selection area determined in the step (3), zirconia veneering color plates with Extremely White (EW), Bright White (BW) and high brightness (HV) are taken and respectively compared with the patient, the achievable effect is shown, and zirconia veneering restoration bodies with the thickness of 0.4mm are manufactured by narrowing the range to the Bright White (BW) and the high brightness (HV) according to the patient; the structural schematic diagram of the zirconia veneered colorimetric plate is shown in fig. 4, the zirconia veneered colorimetric plate comprises a plate arc-shaped plate 3 and a base 4 for supporting the plate arc-shaped plate 3, the thinnest part of the upper end of the plate arc-shaped plate 3 is 0.4mm, and the thickest part of the lower end of the plate arc-shaped plate 3 is 1.2 mm;
(5) adhering the selected zirconium oxide veneered restoration body with 0.4mm thickness made of Bright White (BW) and high brightness (HV) on an A1 base tooth colorimetric plate by utilizing a base tooth colorimetric plate and a zirconium oxide veneer in a veneered colorimetric tool box, and finally selecting the zirconium oxide veneered restoration body with 0.4mm thickness made of Bright White (BW) by a patient to restore through effect comparison;
(6) and transmitting the finally determined material data, color data and thickness size data to a denture fabrication plant for subsequent processing of the zirconia veneering.
After restoration, a photograph of the teeth in the mouth of the patient is shown in FIG. 5.
Example 2:
this example provides a colorimetric method of zirconia-veneering, the colorimetric method comprising the steps of:
(1) the patient appeals to: the problem of darker color of the existing teeth is solved, the effect of expected restoration completion of a patient can be improved by adopting the zirconia veneering restoration, and the existing darker color is presented with a natural color effect;
(2) in combination with the expectation of the patient, the doctor uses an abutment colorimetric plate in the veneering colorimetric tool box to compare with the natural teeth of the patient, and obtains the color of the abutment of the patient as A3;
(3) depending on the patient's abutment color a3 and the desired effect (nature), the physician locks in the color selection area, i.e., the selectable material and thickness ranges, through the zirconia clinical color selection guide, including: zirconia veneered restoration with thickness of 0.4mm and 0.6mm is manufactured by low brightness (LV), bright white gradient (BWM), high brightness gradient (HVM) and low brightness gradient (LVM);
(4) according to the color selection area determined in the step (3), comparing the zirconia veneered colorimetric plates with low brightness (LV), bright white gradient (BWM), high brightness gradient (HVM) and low brightness gradient (LVM) with the patient respectively, displaying the achievable effect, and selecting the zirconia veneered prosthesis with the thickness of 0.6mm, which is manufactured by narrowing the range to the high brightness gradient (HVM) and the low brightness gradient (LVM), according to the patient;
(5) adhering the zirconia veneered restoration body with the thickness of 0.6mm, which is manufactured by the selected high brightness gradient (HVM) and low brightness gradient (LVM), on the A3 abutment colorimetric plate by utilizing the abutment colorimetric plate and the zirconia veneering in the veneered colorimetric tool box, and finally selecting the zirconia veneered restoration body with the thickness of 0.6mm, which is manufactured by the low brightness gradient (LVM), by the patient for repairing through effect comparison;
(6) and transmitting the finally determined material data, color data and thickness size data to a denture fabrication factory for subsequent processing of the zirconia veneers.
It can be seen from the above embodiments that the colorimetric method for zirconia veneering provided by the invention can visually see the expected effect before the final finished product is prepared, unify the cognition of clinical end and technician end on the patient case, reduce the problem of doctor-patient-skill communication, and reduce the difficulty in making the veneering and the rework cost. The colorimetric method is simple to operate, easy to realize and beneficial to production and application.
The present invention is illustrated in detail by the examples described above, but the present invention is not limited to the details described above, i.e., it is not intended that the present invention be implemented by relying on the details described above. It will be apparent to those skilled in the art that any modifications to the present invention, equivalents thereof, additions of additional operations, selection of specific ways, etc., are within the scope and disclosure of the present invention.
Claims (10)
1. A colorimetric method for zirconia-facing, the colorimetric method comprising the steps of:
(1) selecting an expected effect for assisting the selection of the color and the thickness of the zirconia veneering at the later stage;
(2) comparing the veneering colorimetric tool box with teeth in the oral cavity to obtain the color of the abutment;
(3) determining a color selection area through a zirconia veneering color selection guide according to the color of the abutment;
the color selection guide is a standard card taking the color of the abutment as a vertical coordinate and comprehensive data of the material type and the material base thickness of the veneering as a horizontal coordinate;
(4) according to the color selection area determined in the step (3), reducing the color selection range by using a zirconia veneering colorimetric plate and determining the thickness size;
(5) determining the final color of the zirconia facing by using a facing colorimetric tool box;
(6) and processing the zirconia veneers according to the recorded final material data, color data and thickness dimension data.
2. The colorimetric method of claim 1 wherein the veneered colorimetric kit of step (2) comprises an abutment colorimetric plate and a zirconia veneer;
preferably, the step (2) is to compare the abutment colorimetric plate with the teeth in the oral cavity to obtain the color of the abutment;
preferably, the abutment shade guide comprises 12 colours, a1, a2, A3, a3.5, a4, B2, B4, C2, D2, ND3, ND8 and ND9 respectively.
3. The colorimetric method according to claim 2, wherein the ordinate of the zirconia veneering color selection guide of step (3) comprises 7 classes of abutment colors, in the order of Bleach, a1, a2, A3, a3.5, a4 and Brown dark, wherein a2, B2, C2 and D2 are all classified as class a2, A3 and ND3 are all classified as class A3, a4 and B4 are all classified as class a4, and ND8 and ND9 are all classified as Brown dark;
preferably, the abscissa of the zirconia veneering color selection guide of step (3) comprises 8 categories, which are sequentially, extremely white, bright white, high lightness, low lightness, bright white gradation, high lightness gradation, low lightness gradation, and hollywood white.
4. A colorimetric method according to claim 3 wherein each category in the abscissa of the zirconia overlay color selection guide of step (3) comprises 2 material basis thicknesses, 0.4mm and 0.6mm respectively.
5. The colorimetric method of claim 4, wherein the zirconia overlay color selection guide of step (3) comprises 3 bright areas, i.e., a bright white area, a natural area, and a shaded area.
6. The colorimetric method according to claim 5, wherein in the zirconia veneering color selection guide of step (3), the bright white region is a region defined by a base tooth color Bleach-A3, and the abscissa category is from extremely white to high brightness;
preferably, in the color selection guide of the zirconia veneering of the step (3), the natural region is an area determined by the color of the abutment Bleach-A3, the abscissa type is low brightness to hollywood white;
preferably, in the color selection guide for zirconia veneering of step (3), the shaded area is an area defined by an abutment color A3.5-Brown dark, with the abscissa category being from extremely white to Hollywood white.
7. The colorimetric method according to any one of claims 4 to 6, wherein the zirconia coated colorimetric plate of step (4) comprises at least 8 categories of extreme white, bright white, high brightness, low brightness, bright white gradation, high brightness gradation, low brightness gradation, and Hollywood white.
8. The colorimetric method according to any one of claims 1 to 7, wherein the zirconia coated colorimetric plate of step (4) comprises an arc-shaped plate and a base for supporting the arc-shaped plate.
9. The colorimetric method according to claim 8, wherein the arc plate is thicker from top to bottom, and the thinnest part at the upper end is not more than 0.4mm, and the thickest part at the lower end is not less than 0.7 mm.
10. The colorimetric method according to any one of claims 2 to 9, wherein the more specific operation of step (5) comprises: and (4) according to the color selection range and the thickness size reduced in the step (4), pasting the corresponding zirconia veneers on the selected abutment colorimetric plates, and determining the final zirconia veneers color through the display of the overall effect.
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