Dental cement kit

Abstract

[Problem] To select a dental cement or a trial test material for easily obtaining high color tone adaptability to peripheral tooth substances, in mounting of or trial test of a prosthesis device [Solution] To provide a dental cement set consisting of a plurality of dental cements having color tones including color tones of 3 to n colors for selecting and using a dental cement from the plurality of dental cements having the color tones including the color tones of the 3 to n colors after trial test with trial test materials for the dental cement to be used from the plurality of dental cements having the color tones including the color tones of the 3 to n colors, wherein: the amount of information loss Pin with regard to first principal component determined by principal component analysis is less than 2, and. the dental cement set satisfies following Formula 1.
2≤((CL*.sub.p−1−CL*.sub.p).sup.2+(Ca*.sub.p−1−Ca*.sub.p).sup.2+(Cb*.sub.p−1−Cb*.sub.p).sup.2).sup.1/2<8  Formula 1
(wherein p is an arbitrary integer of 2≤p≤n).

Claims

1. A dental cement set consisting of a plurality of dental cements having color tones including color tones of 3 to n colors for selecting and using a dental cement from the plurality of dental cements having the color tones including the color tones of the 3 to n colors after trial test with trial test materials for the dental cement to be used from the plurality of dental cements having the color tones including the color tones of the 3 to n colors, wherein: when it is defined that C.sub.1 (CL*.sub.1, Ca*.sub.1, Cb*.sub.1) is a color tone having higher L* value in two color tones having the longest distance, and C.sub.2 (CL*.sub.2, Ca*.sub.2, Cb*.sub.2), C.sub.3 (CL*.sub.3, Ca*.sub.3, Cb*.sub.3), to C.sub.n−1, (CL*.sub.n−1, Ca*.sub.n−1, Cb*.sub.n−1), Cn (CL*.sub.n, Ca*.sub.n, Cb*.sub.n) are color tones in the order of closer distance from the C.sub.1 (CL*.sub.1, Ca*.sub.1, Cb*.sub.1), in the L*a*b* space, each color tone C (CL*, Ca*, Cb*) in the plurality of dental cements having the 3 to n colors satisfies that an amount of information loss Pin in each color tone with regard to first principal component determined by principal component analysis of each of the color tones C.sub.1 (CL*.sub.1, Ca*.sub.1, Cb*.sub.1), C.sub.2 (CL*.sub.2, Ca*.sub.2, Cb*.sub.2), to C.sub.n−1, (CL*.sub.n−1, Ca*.sub.n−1, Cb*.sub.n−1), Cn (CL*.sub.n, Ca*.sub.n, Cb*.sub.n) is less than 2, and following Formula 1,
2≤((CL*.sub.p−1−CL.sub.p).sup.2+(Ca*.sub.p−1−Ca*.sub.p).sup.2+(Cb*.sub.p−1−Cb*.sub.p).sup.2).sup.1/2<8  Formula 1 (wherein p is an arbitrary integer of 2≤p≤n).

2. The dental cement set of claim 1, wherein: the amount of information loss Pin with the regard to first principal component determined by principal component analysis is less than 1.5.

3. A dental cement trial test material kit comprising the dental cement set of claim 1 and a trial test material set consisting of a plurality of trial test materials corresponding to the color tone of each dental cement, wherein: each color tone T.sub.1 (T L*.sub.1, Ta*.sub.1, Tb*.sub.1), T.sub.2 (TL*.sub.2, Ta*.sub.2, Tb*.sub.2), to T.sub.n−1 (TL*.sub.n−1, Ta*.sub.n−1, Tb*.sub.n−1), Tn (TL*.sub.n, Ta*.sub.n, Tb*.sub.n) of the trial test materials corresponding to each color tone C.sub.1 (CL*.sub.1, Ca*.sub.1, Cb*.sub.1), C.sub.2 (CL*.sub.2, Ca*.sub.2, Cb*.sub.2), to C.sub.n−1 (CL*.sub.n−1, Ca*.sub.n−1, Cb*.sub.n−1) Cn (CL*.sub.n, Ca*.sub.n, Cb*.sub.n) of the dental cements having the 3 to n colors in L*a*b* space satisfies following Formula 2,
0≤((CL*.sub.p−TL*.sub.p).sup.2+(Ca*.sub.p−Ta*.sub.p).sup.2+(Cb*.sub.p−Tb*.sub.p).sup.2).sup.1/2≤2, and 0≤((CL*.sub.1−TL*.sub.1).sup.2+(Ca*.sub.1−Ta*.sub.1).sup.2+(Cb.sub.1−Tb*.sub.1).sup.2).sup.1/2≤2  Formula 2 (wherein p is an arbitrary integer of 2≤p≤n).

4. A dental cement selection method selecting a dental cement to be used from a plurality of dental cements having color tones including color tones of 3 to n colors after trial test with a plurality of trial test materials including trial test materials corresponding to the color tones of the 3 to n colors, wherein the method uses a dental cement trial test material kit comprising a dental cement set and a trial test material set, wherein: the dental cement set consisting of a plurality of dental cements having color tones including color tones of 3 to n colors, wherein when it is defined that C.sub.1 (CL*.sub.1, Ca*.sub.1, Cb*.sub.1) is a color tone having higher L* value in two color tones having the longest distance, and C.sub.2 (CL*.sub.2, Ca*.sub.2, Cb*.sub.2), C.sub.3 (CL*.sub.3, Ca*.sub.3, Cb*.sub.3), to C.sub.n−1, (CL*.sub.n−1, Ca*.sub.n−1, Cb*.sub.n−1), Cn (CL*.sub.n, Ca*.sub.n, Cb*.sub.n) are color tones in the order of closer distance from the C.sub.1 (CL*.sub.1, Ca*.sub.1, Cb*.sub.1), in the L*a*b* space, each color tone C (CL*, Ca*, Cb*) in the plurality of dental cements having the 3 to n colors satisfies that an amount of information loss Pin in each color tone with regard to first principal component determined by principal component analysis of each of the color tones C.sub.1 (CL*.sub.1, Ca*.sub.1, Cb*.sub.1), C.sub.2 (CL*.sub.2, Ca*.sub.2, Cb*.sub.2), to C.sub.n−1, (CL*.sub.n−1, Ca*.sub.n−1, Cb*.sub.n−1), Cn (CL*.sub.n, Ca*.sub.n, Cb*.sub.n) is less than 2, and following Formula 1,
2≤((CL*.sub.p−1−CL*.sub.p).sup.2+(Ca*.sub.p−1−Ca*.sub.p).sup.2+(Cb*.sub.p−1−Cb*.sub.p).sup.2).sup.1/2<8  Formula 1 (wherein p is an arbitrary integer of 2≤p≤n), and the trial test material set consisting of a plurality of trial test materials corresponding to the color tone of each dental cement, wherein, each color tone T.sub.1 (T L*.sub.1, Ta*.sub.1, Tb*.sub.1), T.sub.2 (TL*.sub.2, Ta*.sub.2, Tb*.sub.2), to T.sub.n−1, (TL*.sub.n−1, Ta*.sub.n−1, Tb*.sub.n−1), Tn (TL*.sub.n, Ta*.sub.n, Tb*.sub.n) of the trial test materials corresponding to each color tone of the dental cements having the 3 to n colors satisfies following Formula 2,
0≤((CL*.sub.p−TL*.sub.p).sup.2+(Ca*.sub.p−Ta*.sub.p).sup.2+(Cb*.sub.p−Tb*.sub.p).sup.2).sup.1/2≤2, and 0≤((CL*.sub.1−TL*.sub.1).sup.2+(Ca*.sub.1−Ta*.sub.1).sup.2+(Cb*.sub.1−Tb*.sub.1).sup.2).sup.1/2≤2  Formula 2 (wherein p is an arbitrary integer of 2≤p≤n).

5. The dental cement set of claim 1, wherein the dental cement set consists of the plurality of dental cements having the color tones of 3 to n colors.

6. The dental cement set of claim 2, wherein the dental cement set consists of the plurality of dental cements having the color tones of 3 to n colors.

7. The dental cement trial test material kit of claim 3, wherein the dental cement set consists of the plurality of dental cements having the color tones of 3 to n colors.

8. The dental cement selection method of claim 4, wherein the dental cement set consists of the plurality of dental cements having the color tones of 3 to n colors.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) FIG. 1

(2) In the color tone shown in FIG. 1 (dental cement kit (1) described as a specific example), the first principal component axis is close to the brightness axis, and therefore the dental cement kit can mainly adjust L*. Further, because the dispersion of each color tone from the first principal component axis (amount of information loss: P1n=0.73) is sufficiently small, it is indicated that it has linearity and that a system of the color tone is maintained.

(3) FIG. 2

(4) In the color tone shown in FIG. 2 (dental cement kit (4) described as a specific example), the first principal component axis is related to L* and b*, therefore it is possible to adjust L* and b* simultaneously. In addition, as in FIG. 1, because the dispersion of each color tone from the first principal component axis (amount of information loss: P1n=1.81) is small, it is indicated that it has linearity and that a system of the color tone is maintained.

(5) FIG. 3

(6) In the color tone shown in FIG. 3 (dental cement kit (9) described as a specific example), although the first principal component axis is related to L* and b*, the dispersion of each color tone from the first principal component axis (amount of information loss: P1n=3.23) is large, therefore it is indicated that it does not have linearity, that is, L* and b* are scattered, and that a system of the color tone is not maintained.

INDUSTRIAL APPLICABILITY

(7) In the dental field, it is available for the cement and trial test material industries.

(8) With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context.

(9) Although the description herein has been given with reference to the drawings and embodiments, it should be noted that those skilled in the art may make various changes and modifications on the basis of this disclosure without difficulty. Accordingly, any such changes and modifications are intended to be included in the scope of the embodiments.