US 12,274,591 B2
Dental blank
Hyung Bong Lim, Ansan-si (KR); Hwan Soon Koh, Anyang-si (KR); Joon Hyung Kim, Anseong-si (KR); Sung Ho Ha, Ansan-si (KR); and Yong Su Kim, Gangneung-si (KR)
Assigned to HASS CO., LTD., Gangneung-si (KR)
Filed by HASS CO., LTD., Gangneung-si (KR)
Filed on Apr. 17, 2023, as Appl. No. 18/301,313.
Application 18/301,313 is a division of application No. 17/368,440, filed on Jul. 6, 2021, abandoned.
Claims priority of application No. 10-2020-0105643 (KR), filed on Aug. 21, 2020.
Prior Publication US 2023/0248492 A1, Aug. 10, 2023
Int. Cl. A61C 13/00 (2006.01)
CPC A61C 13/0022 (2013.01) [A61C 13/0006 (2013.01); Y10T 428/12229 (2015.01)] 2 Claims
OG exemplary drawing
 
1. A dental blank comprising:
a seating portion comprising a seating groove having a circular shape in a cross-section and having a continuous circular inner side surface,
a guard portion disposed in contact with the continuous circular inner side surface and having a substantially ring shape in a cross-section thereof, the guard portion including a first end and a second end facing the first end and including an opening portion defined by the first end and the second end therebetween,
a material portion disposed on the guard portion comprising a plurality of outer contacting edges in linear contact with a continuous circular inner side surface of the guard portion, and having a polygonal shape in a cross-section in which the polygonal shape is distinct from the circular shape,
wherein one side of the material portion, defined by two of the plurality of outer contacting edges, is disposed adjacent to the opening portion of the guard portion,
and a tool entrance portion, defined by the one side of the material portion, the first end of the guard portion, the second end of the guard portion, and the circular shape of the seating groove, is formed due to a difference in shape between the circular shape of the seating groove and the polygonal shape of the material portion.