US 11,850,112 B2
Systems and methods for forming dental appliances
Islam Khasanovich Raslambekov, Long Island City, NY (US)
Assigned to OXILIO LTD, Larnaca (CY)
Filed by Oxilio Ltd, Larnaca (CY)
Filed on Jul. 2, 2021, as Appl. No. 17/366,605.
Application 17/366,605 is a continuation of application No. 17/143,085, filed on Jan. 6, 2021, granted, now 11,058,515.
Prior Publication US 2022/0211465 A1, Jul. 7, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61C 7/00 (2006.01); A61C 7/08 (2006.01); G06F 30/00 (2020.01)
CPC A61C 7/002 (2013.01) [A61C 7/08 (2013.01); G06F 30/00 (2020.01); A61C 2007/004 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of determining a cut line of an aligner, the method being executable by a processor of a computer system, the method comprising:
obtaining, by the processor, 3D model data of a subject's arch form, the subject's arch form including a plurality of teeth and a gingiva of a subject;
obtaining, by the processor, using the 3D model data, for each one of the plurality of teeth, a respective one of a plurality of individual segmentation loops,
a given one of the plurality of individual segmentation loops being indicative of a boundary between a respective tooth of the plurality of teeth and the gingiva;
translating each one of the plurality of individual segmentation loops along the respective tooth at a predetermined distance from the gingiva to generate a plurality of offset individual segmentation loops;
identifying, by the processor, within each one of the plurality of offset individual segmentation loops a respective buccal portion and a respective lingual portion;
sequentially joining, by the processor, respective buccal portions and respective lingual portions associated with each one of the plurality of offset individual segmentation loops, thereby generating a single arch form loop; and
determining, by the processor, the cut line as the single arch form loop, the cut line to be used for producing the aligner.