US 12,133,710 B2
Automatic determination of workflow for restorative dental procedures
Ofer Saphier, Rechovot (IL); Pavel Agniashvili, Moscow (RU); Moti Ben-Dov, Tel Mond (IL); Ran Katz, Hod Hasharon (IL); Avi Kopelman, Palo Alto, CA (US); Maxim Volgin, Moscow (RU); Doron Malka, Tel Aviv (IL); Avraham Zulti, Modiin (IL); Pavel Veryovkin, Krasnogorsk (RU); Maayan Moshe, Ramat Hasharon (IL); Ido Tishel, Kfar Bilu (IL); Adi Levin, Nes Tziona (IL); Shai Farkash, Hod Hasharon (IL); Inna Karapetyan, Modiin (IL); Dina Bova, Shaar Efraim (IL); Edi Fridman, Rishon le Zion (IL); and Jonathan Coslovsky, Rehovot (IL)
Assigned to Align Technology, Inc., San Jose, CA (US)
Filed by Align Technology, Inc., San Jose, CA (US)
Filed on Jul. 30, 2021, as Appl. No. 17/390,858.
Application 17/390,858 is a continuation of application No. 17/230,825, filed on Apr. 14, 2021.
Claims priority of provisional application 63/010,667, filed on Apr. 15, 2020.
Prior Publication US 2021/0353154 A1, Nov. 18, 2021
Int. Cl. A61B 5/00 (2006.01); G06T 17/20 (2006.01); G06V 10/764 (2022.01); G06V 10/82 (2022.01); G06V 20/64 (2022.01)
CPC A61B 5/004 (2013.01) [A61B 5/0033 (2013.01); A61B 5/0088 (2013.01); A61B 5/7267 (2013.01); A61B 5/7475 (2013.01); G06T 17/20 (2013.01); G06V 10/764 (2022.01); G06V 10/82 (2022.01); G06V 20/64 (2022.01); G06T 2210/41 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A system comprising:
an intraoral scanner to generate a first plurality of intraoral scans at a first time and one or more additional intraoral scans at a second time; and
a computing device connected to the intraoral scanner via a wired or wireless connection, the computing device to:
determine a first three-dimensional surface of at least a portion of a dental arch using the first plurality of intraoral scans;
determine that the first three-dimensional surface depicts at least part of a preparation tooth or at least part of a surrounding region of the preparation tooth;
determine that the one or more additional intraoral scans depict at least the part of the preparation tooth or the part of the surrounding region of the preparation tooth;
determine whether a time difference between the first time and the second time exceeds a time difference threshold;
determine whether a change to at least one of the preparation tooth or the surrounding region of the preparation tooth between the first three-dimensional surface and the one or more additional intraoral scans exceeds a change threshold;
determine, based at least in part on whether the time difference exceeds the time difference threshold and whether the change to at least one of the preparation tooth or the surrounding region of the preparation tooth exceeds the change threshold, whether to use a) the first three-dimensional surface, b) data from the one or more additional intraoral scans or c) a combination of the first three-dimensional surface and the data from the one or more additional intraoral scans to depict the part of the preparation tooth or the surrounding region of the preparation tooth; and
generate a three-dimensional model of the dental arch, wherein a) the first three-dimensional surface, b) the data from the one or more additional intraoral scans or c) the combination of the first three-dimensional surface and the data from the one or more additional intraoral scans is used to depict the part of the preparation tooth or the part of the surrounding region of the preparation tooth in the three-dimensional model.