منابع مشابه
Measuring 3-dimensional tooth movement with a 3-dimensional surface laser scanner.
INTRODUCTION Our aims in this study were to (1) develop a method of measuring 3-dimensional (3D) tooth movement using a 3D surface laser scanner, (2) test the accuracy of this method, and (3) compare the measurements with those from cephalometric radiographs. METHODS A method of superimposing pretreatment and posttreatment models on the palatal rugae was developed, and an experimental model w...
متن کاملAnchorage in Orthodontics: Three-dimensional Scanner Input
Aims and Objectives The aim of this article is to re-evaluate anchorage coefficient values in orthodontics and their influence in the treatment decision through the usage of three-dimensional (3D) scanner. Materials and Methods A sample of 80 patients was analyzed with the 3D scanner using the C2000 and Cepha 3DT softwares (CIRAD Montpellier, France). Tooth anatomy parameters (linear measurem...
متن کاملSensitivity and daily quality control of a mobile PET/CT scanner operating in 3-dimensional mode.
UNLABELLED This study investigated the stability of the sensitivity of a mobile PET/CT scanner and tested a phantom experiment to improve on the daily quality control recommendations of the manufacturer. Unlike in-house scanners, mobile PET/CT devices are subjected to a harsher, continuously changing environment that can alter their performance. The parameter of sensitivity was investigated bec...
متن کاملWhite light scanner-based repeatability of 3-dimensional digitizing of silicon rubber abutment teeth impressions
PURPOSE The aim of this study was to evaluate the repeatability of the digitizing of silicon rubber impressions of abutment teeth by using a white light scanner and compare differences in repeatability between different abutment teeth types. MATERIALS AND METHODS Silicon rubber impressions of a canine, premolar, and molar tooth were each digitized 8 times using a white light scanner, and 3D s...
متن کاملThree-Dimensional Surround Sound Systems Based on Spherical Harmonics*
The theory of recording and reproduction of three-dimensional sound fields based on spherical harmonics is reviewed and extended. Free-field, sphere, and general recording arrays are reviewed, and the mode-matching and simple source approaches to sound reproduction in anechoic environments are discussed. Both methods avoid the need for both monopole and dipole loudspeakers—as required by the Ki...
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ژورنال
عنوان ژورنال: Management and Production Engineering Review
سال: 2017
ISSN: 2082-1344
DOI: 10.1515/mper-2017-0022