US 12,484,914 B2
Dental drill surface treatment
Simon Zollinger, Basel (CH); and Sven Schneider, Basel (CH)
Assigned to STRAUMANN HOLDING AG, Basel (CH)
Appl. No. 17/435,425
Filed by STRAUMANN HOLDING AG, Basel (CH)
PCT Filed Mar. 6, 2020, PCT No. PCT/EP2020/056059
§ 371(c)(1), (2) Date Sep. 1, 2021,
PCT Pub. No. WO2020/182673, PCT Pub. Date Sep. 17, 2020.
Claims priority of application No. 19161532 (EP), filed on Mar. 8, 2019.
Prior Publication US 2022/0125552 A1, Apr. 28, 2022
Int. Cl. A61B 17/16 (2006.01); A61B 90/92 (2016.01); C23F 1/28 (2006.01); C25F 3/24 (2006.01)
CPC A61B 17/1673 (2013.01) [C23F 1/28 (2013.01); C25F 3/24 (2013.01); A61B 90/92 (2016.02)] 17 Claims
OG exemplary drawing
 
1. A method of surface treating a drill,
said drill comprising a shaft extending along a central longitudinal axis from a proximal end to a distal end, the proximal end of the shaft comprising a shank adapted for connection to a rotary driver, the shaft further comprising, distal of the shank, a fluted section comprising at least one flute extending along the longitudinal length of the fluted section,
the method comprising the steps of:
acid etching at least a portion of the fluted section of the shaft in order to create a visible matted effect,
subsequently electro-polishing at least said portion of the fluted section of the shaft in order to visibly reduce said matted effect and
subsequently creating one or more visual marking within said portion of the fluted section of the shaft.