公开(公告)号：US20150072313A1

公开(公告)日：2015-03-12

申请号：US14399271

申请日：2013-05-07

Applicant: Sirona Dental System GmbH

Inventor： Frank Thiel ,  Sascha Schneider

IPC: A61C19/04 ,  A61B6/14 ,  A61C9/00

CPC classification number: A61C19/04 ,  A61B6/14 ,  A61C9/0046 ,  A61C9/006 ,  A61C9/0073 ,  A61C9/008

Abstract: The invention relates to a method for measuring a dental situation (1) comprising a plurality of implants (2, 3, 4, 5) and/or preparations for inserting dental restorations. Using a first measuring method, a first region (13) of the dental situation (1) is initially recorded while first measurement data are generated. The first region (13) is selected to comprise at least two implants (2, 3, 4, 5) and/or preparations. Subsequently, object regions (17, 18, 19, 20) surrounding the implants (2, 3, 4, 5) and/or the preparations are established, and, while using a second measuring method, the established object regions (17, 18, 19, 20) are detected, and second measurement data are generated. The second measuring method is more precise than the first measuring method.

Abstract translation: 本发明涉及一种用于测量牙齿情况的方法（1），包括多个植入物（2,3,4,5）和/或用于插入牙齿修复体的制剂。 使用第一测量方法，在产生第一测量数据的同时，首先记录牙齿状况（1）的第一区域（13）。 第一区域（13）被选择为包括至少两个植入物（2,3,4,5）和/或制剂。 随后，建立围绕植入物（2,3,4,5）和/或制剂的物体区域（17,18,19,20），并且在使用第二测量方法的同时，建立的对象区域（17,18 ，19,20），并且生成第二测量数据。 第二种测量方法比第一种测量方法更精确。

公开(公告)号：US20240404130A1

公开(公告)日：2024-12-05

申请号：US18690934

申请日：2022-09-13

Applicant: DENTSPLY SIRONA Inc. ,  SIRONA DENTAL SYSTEM GMBH

Inventor： Markus HÜLSBUSCH ,  Susanne MAUR

IPC: G06T11/00

Abstract: A computer-implemented method for reconstructing a dental DVT image, including: (S1) providing a sinogram acquired through an extraoral dental X-ray device during a rotation of at least 180 degrees around a patient's head and an initial projection geometry; (S2) geometry calibration through varying the projection geometry and evaluating the varied projection geometry using data consistency constraints derived from a first volume generated from the sinogram using the varied projection geometry in a first reconstruction method, the first reconstruction method using first reconstruction parameters; (S3) generating a final volume with a final reconstruction method using the varied projection geometry and final reconstruction parameters from the sinogram, the first reconstruction parameters of the first reconstruction method and the final reconstruction parameters of the final reconstruction method differing in at least one reconstruction parameter.