Dental cement kit

Patent metadata

Field	Value
Publication number	US-11547541-B2
Application number	US-201916575867-A
Country	US
Kind code	B2
Filing date	Sep 19, 2019
Priority date	Sep 20, 2018
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

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*p−1−CL*p)2+(Ca*p−1−Ca*p)2+(Cb*p−1−Cb*p)2)1/2<8  Formula 1(wherein p is an arbitrary integer of 2≤p≤n).

First claim

What is claimed is:

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 1 (CL* 1 , Ca* 1 , Cb* 1 ) is a color tone having higher L* value in two color tones having the longest distance, and C 2 (CL* 2 , Ca* 2 , Cb* 2 ), C 3 (CL* 3 , Ca* 3 , Cb* 3 ), to C n−1 , (CL* n−1 , Ca* n−1 , Cb* n−1 ), Cn (CL* n , Ca* n , Cb* n ) are color tones in the order of closer distance from the C 1 (CL* 1 , Ca* 1 , Cb* 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 1 (CL* 1 , Ca* 1 , Cb* 1 ), C 2 (CL* 2 , Ca* 2 , Cb* 2 ), to C n−1 , (CL* n−1 , Ca* n−1 , Cb* n−1 ), Cn (CL* n , Ca* n , Cb* n ) is less than 2, and
following Formula 1,
2≤(( CL* p−1 −CL p ) 2 +( Ca* p−1 −Ca* p ) 2 +( Cb* p−1 −Cb* p ) 2 ) 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 1 (T L* 1 , Ta* 1 , Tb* 1 ), T 2 (TL* 2 , Ta* 2 , Tb* 2 ), to T n−1 (TL* n−1 , Ta* n−1 , Tb* n−1 ), Tn (TL* n , Ta* n , Tb* n ) of the trial test materials corresponding to each color tone C 1 (CL* 1 , Ca* 1 , Cb* 1 ), C 2 (CL* 2 , Ca* 2 , Cb* 2 ), to C n−1 (CL* n−1 , Ca* n−1 , Cb* n−1 ) Cn (CL* n , Ca* n , Cb* n ) of the dental cements having the 3 to n colors in L*a*b* space satisfies following Formula 2,
0≤(( CL* p −TL* p ) 2 +( Ca* p −Ta* p ) 2 +( Cb* p −Tb* p ) 2 ) 1/2 ≤2, and 0≤(( CL* 1 −TL* 1 ) 2 +( Ca* 1 −Ta* 1 ) 2 +( Cb 1 −Tb* 1 ) 2 ) 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 1 (CL* 1 , Ca* 1 , Cb* 1 ) is a color tone having higher L* value in two color tones having the longest distance, and C 2 (CL* 2 , Ca* 2 , Cb* 2 ), C 3 (CL* 3 , Ca* 3 , Cb* 3 ), to C n−1 , (CL* n−1 , Ca* n−1 , Cb* n−1 ), Cn (CL* n , Ca* n , Cb* n ) are color tones in the order of closer distance from the C 1 (CL* 1 , Ca* 1 , Cb* 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 1 (CL* 1 , Ca* 1 , Cb* 1 ), C 2 (CL* 2 , Ca* 2 , Cb* 2 ), to C n−1 , (CL* n−1 , Ca* n−1 , Cb* n−1 ), Cn (CL* n , Ca* n , Cb* n ) is less than 2, and
following Formula 1,
2≤(( CL* p−1 −CL* p ) 2 +( Ca* p−1 −Ca* p ) 2 +( Cb* p−1 −Cb* p ) 2 ) 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 1 (T L* 1 , Ta* 1 , Tb* 1 ), T 2 (TL* 2 , Ta* 2 , Tb* 2 ), to T n−1 , (TL* n−1 , Ta* n−1 , Tb* n−1 ), Tn (TL* n , Ta* n , Tb* 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* p −TL* p ) 2 +( Ca* p −Ta* p ) 2 +( Cb* p −Tb* p ) 2 ) 1/2 ≤2, and 0≤(( CL* 1 −TL* 1 ) 2 +( Ca* 1 −Ta* 1 ) 2 +( Cb* 1 −Tb* 1 ) 2 ) 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.

Assignees

• Shofu Inc

Inventors

• Hara Daisuke
• Kitada Naoya
• Yamamoto Kenzo
• Nishino Yasuhiro
• Jogetsu Yoshiyuki

Classifications

• A61K6/30

  Compositions for temporarily or permanently fixing teeth or palates, e.g. primers for dental adhesives · CPC title

• G06T7/90

  Determination of colour characteristics · CPC title

• A61C13/082

  Cosmetic aspects, e.g. inlays; Determination of the colour (A61C19/10 takes precedence) · CPC title

• A61K6/78 Primary

  Pigments · CPC title

• A61K6/849

  comprising inorganic cements · CPC title