IPC분류정보
국가/구분 |
United States(US) Patent
공개
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0685118
(2017-08-24)
|
공개번호 |
US-0055613
(2018-03-01)
|
우선권정보 |
JP-2016-166080 (2016-08-26) |
발명자
/ 주소 |
- KADOBAYASHI, Yusei
- SHIGEZAWA, Masako
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
0 |
초록
▼
To provide a mill blank for dental CAD/CAM containing a ceramic material for preparing a dental restoration by being installed in a CAD/CAM device, wherein, the mill blank for dental CAD/CAM comprises a ceramic portion in which a dental restoration is cut out and a resin portion which joins with a C
To provide a mill blank for dental CAD/CAM containing a ceramic material for preparing a dental restoration by being installed in a CAD/CAM device, wherein, the mill blank for dental CAD/CAM comprises a ceramic portion in which a dental restoration is cut out and a resin portion which joins with a CAD/CAM device, the mill blank for dental CAD/CAM has a columnar shape, the resin portion is provided at a side surface of the ceramic portion and has a cylindrical shape or a belt shape, a ceramic portion side of the resin portion contacts with the side surface of the ceramic portion, the ceramic portion has a columnar shape, the ceramic portion has a protrusion part, an upper surface and a bottom surface of the columnar shape of the ceramic portion are parallel to each other, the mill blank for dental CAD/CAM has at least two recesses which includes a first recess and a second recess in a circumference portion, the first recess and the second recess respectively include a first surface which is parallel to the upper surface and the bottom surface and a second surface which is a circumferential surface concentric with the circumferential surface of the mill blank for dental CAD/CAM and is vertical to the first surface, and the at least two recesses are formed within the resin portion.
대표청구항
▼
1. A mill blank for dental CAD/CAM containing a ceramic material for preparing a dental restoration by being installed in a CAD/CAM device, wherein, the mill blank for dental CAD/CAM comprises a ceramic portion in which a dental restoration is cut out and a resin portion which joins with a CAD/CAM d
1. A mill blank for dental CAD/CAM containing a ceramic material for preparing a dental restoration by being installed in a CAD/CAM device, wherein, the mill blank for dental CAD/CAM comprises a ceramic portion in which a dental restoration is cut out and a resin portion which joins with a CAD/CAM device,the mill blank for dental CAD/CAM has a columnar shape,the resin portion is provided at a side surface of the ceramic portion and has a cylindrical shape or a belt shape,a ceramic portion side of the resin portion contacts with the side surface of the ceramic portion,the ceramic portion has a columnar shape,the ceramic portion has a protrusion part,an upper surface and a bottom surface of the columnar shape of the ceramic portion are parallel to each other,the mill blank for dental CAD/CAM has at least two recesses which includes a first recess and a second recess in a circumference portion,the first recess and the second recess respectively include a first surface which is parallel to the upper surface and the bottom surface and a second surface which is a circumferential surface concentric with the circumferential surface of the mill blank for dental CAD/CAM and is vertical to the first surface, andthe at least two recesses are formed within the resin portion. 2. The mill blank for dental CAD/CAM of claim 1, wherein, the diameter of the columnar shape of the mill blank for dental CAD/CAM is within a range of 95 to 100 mm, and a height of the columnar shape of the mill blank for dental CAD/CAM is within a range of 10 to 35 mm. 3. The mill blank for dental CAD/CAM of claim 2, wherein, a diameter of the columnar shape of the ceramic portion is within a range of 90 to 96 mm, and a height of the columnar shape of the ceramic portion is within a range of 10 to 35 mm. 4. The mill blank for dental CAD/CAM of claim 3, wherein, a distance between the first recess and the second recess in the axial direction of the columnar shape of the mill blank for dental CAD/CAM is within a range of 9 to 11 mm. 5. The mill blank for dental CAD/CAM of claim 4, wherein, a dimension from the center axis of the columnar shape of the mill blank for dental CAD/CAM to the first recess and the second recess is within a range of 91 to 98 mm. 6. The mill blank for dental CAD/CAM of claim 1, wherein, an external shape in a state that the resin portion is attached to the side surface of the ceramic portion is the same as an external shape of the mill blank for dental CAD/CAM. 7. The mill blank for dental CAD/CAM of claim 1, wherein, in a state that the resin portion is attached to the side surface of the ceramic portion, a height of the resin portion of the mill blank for dental CAD/CAM is the same as a height of the ceramic portion of the mill blank for dental CAD/CAM,when the resin portion has the belt shape, the both ends of the resin portion do not contact with each other to provide a gap between the both ends, in a state that the resin portion is attached to the side surface of the ceramic portion,when the resin portion has the cylindrical shape, the resin portion has at least one slit. 8. The mill blank for dental CAD/CAM of claim 1, wherein, the diameter of the columnar shape of the mill blank for dental CAD/CAM is 98 mm, and the height of the columnar shape of the mill blank for dental CAD/CAM is 14, 18 or 26 mm,a distance between the first recess and the second recess in the axial direction of the columnar shape of the mill blank for dental CAD/CAM is 10 mm, anda dimension from the center axis of the columnar shape of the mill blank for dental CAD/CAM to the first recess and the second recess is 94 mm. 9. The mill blank for dental CAD/CAM of claim 1, wherein, a part of the upper surface and a part of the bottom surface consist of the resin portion. 10. The mill blank for dental CAD/CAM of claim 1, wherein the ceramic portion consists of a ceramic material which is semi-sintered or is not subjected to final sintering. 11. The mill blank for dental CAD/CAM of claim 10, wherein the ceramic material contains alumina or zirconia at a ratio of 95 wt. % or more. 12. The mill blank for dental CAD/CAM of claim 10, wherein a primary average particle diameter of the ceramic material is within the range of 0.01 to 10 μm. 13. An adaptor for a mill blank for dental CAD/CAM used in the mill blank for dental CAD/CAM of claim 1, wherein the adaptor consists of the resin portion which is attached to the ceramic portion of the mill blank for dental CAD/CAM. 14. A cut portion for a mill blank for dental CAD/CAM used in the mill blank for dental CAD/CAM of claim 1, wherein the cut portion consists of the ceramic portion of the mill blank for dental CAD/CAM.
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