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Quintessence Publishing: Journals: JCD

 

International Journal of Computerized Dentistry

Edited by B. Reiss, K. Wiedhahn, and O. Schenk

Official publication of the International Society of Computerized Dentistry

ISSN 1463-4201

Publication:

Spring 2009
Volume 12 , Issue 1

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Accuracy Testing of a New Intraoral 3D Camera

Mehl, A / Ender, A / Mörmann, W / Attin, Th

Pages: 11 - 28

Surveying intraoral structures by optical means has reached the stage where it is being discussed as a serious clinical alternative to conventional impression taking. Ease of handling and, more importantly, accuracy are important criteria for the clinical suitability of these systems. This article presents a new intraoral camera for the Cerec procedure. It reports on a study investigating the accuracy of this camera and its potential clinical indications. Singletooth and quadrant images were taken with the camera and the results compared to those obtained with a reference scanner and with the previous 3D camera model. Differences were analyzed by superimposing the data records. Accuracy was higher with the new camera than with the previous model, reaching up to 19 μm in singletooth images. Quadrant images can also be taken with sufficient accuracy (ca 35 μm) and are simple to perform in clinical practice, thanks to built-in shake detection in automatic capture mode. Keywords: Intraoral measurement, registration, accuracy, CAD/CAM, virtual model

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