Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
ZIRCONIA MILL BLANK
To provide a zirconia mill blank for dental cutting and machining that can impart translucency gradation and color gradation similar to a natural tooth to a zirconia perfect sintered body without the need for special equipment.To provide a zirconia mill blank for dental cutting and machining comprisingtwo opposing surfaces and a side surface between the two opposing surfaces, whereinthe side surface has a rectangular shape in a side view of the zirconia mill blank for dental cutting and machining, andin a case in whichone of the two opposing surfaces is defined as surface A,the other surface of the two opposing surfaces is defined as surface B,a surface which is parallel to the surface A and is located at a position of 1.0 mm to 1.5 mm from the surface A toward the surface B in a direction parallel to the side surface is defined as surface C,points which are set to having 0.5 mm of distance on the straight line in the direction parallel to the side surface from the surface C toward the surface B in the area from the surface C to the surface B are defined as point P(1), point P(2), to point P(n) in the order from the surface C,a stabilizer concentration (mol%) at each point is defined as SP(1), SP(2), to SP(n) (n ≥ ((shortest distance (mm) between the surface C and the surface B) - 2)/0.5),the maximum value of the stabilizer concentration (mol%) is defined as SPmax,the minimum value of the stabilizer concentration (mol%) is defined as SPmin, andthe maximum value of ΔSP(m) defined by the following formula is defined as ΔSPmax,the zirconia mill blank for dental cutting and machining has a portion where the value of "SPmax - Spmin" which is a difference between the SPmax and the SPmin is 0.3 or more, and the ΔSPmax is less than 0.5. ΔSPm=SPm−SPm+1m=1,2,…n−1
ZIRCONIA MILL BLANK
To provide a zirconia mill blank for dental cutting and machining that can impart translucency gradation and color gradation similar to a natural tooth to a zirconia perfect sintered body without the need for special equipment.To provide a zirconia mill blank for dental cutting and machining comprisingtwo opposing surfaces and a side surface between the two opposing surfaces, whereinthe side surface has a rectangular shape in a side view of the zirconia mill blank for dental cutting and machining, andin a case in whichone of the two opposing surfaces is defined as surface A,the other surface of the two opposing surfaces is defined as surface B,a surface which is parallel to the surface A and is located at a position of 1.0 mm to 1.5 mm from the surface A toward the surface B in a direction parallel to the side surface is defined as surface C,points which are set to having 0.5 mm of distance on the straight line in the direction parallel to the side surface from the surface C toward the surface B in the area from the surface C to the surface B are defined as point P(1), point P(2), to point P(n) in the order from the surface C,a stabilizer concentration (mol%) at each point is defined as SP(1), SP(2), to SP(n) (n ≥ ((shortest distance (mm) between the surface C and the surface B) - 2)/0.5),the maximum value of the stabilizer concentration (mol%) is defined as SPmax,the minimum value of the stabilizer concentration (mol%) is defined as SPmin, andthe maximum value of ΔSP(m) defined by the following formula is defined as ΔSPmax,the zirconia mill blank for dental cutting and machining has a portion where the value of "SPmax - Spmin" which is a difference between the SPmax and the SPmin is 0.3 or more, and the ΔSPmax is less than 0.5. ΔSPm=SPm−SPm+1m=1,2,…n−1
ZIRCONIA MILL BLANK
ZIRCONIUMDIOXIDFRÄSROHLING
ÉBAUCHE À FRAISER DE ZIRCONE
NONAKA KAZUMICHI (Autor:in) / TAKAHASHI SHUHEI (Autor:in)
22.05.2024
Patent
Elektronische Ressource
Englisch
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