The authors evaluated the imaging performance of cone-beam computed tomography (CBCT) for dental use using 3DX multi-image micro-CT (Morita Co., Kyoto, Japan) and four-row multi-detector helical computed tomography (MDCT) using an Asteion (Toshiba, Tokyo, Japan). A dried right maxillary bone was cut into eight slices 2 mm thick toward the zygomatico-palate and used as a phantom. Images of the p...

Cone-beam computed tomography （CBCT） is frequently used for preoperative examination of implants; however, it cannot be to determine the bone mineral density （BMD） owing its incapability at providing CT values obtained through a scan. An efficient and accurate technique measuring BMD using quantitative （QCT）. Herein, we examined whether jaw content can easily estimated from CBCT gray value by a...

Radiography by computed tomography for dental and jaw use (dental CT) has recentry attracted attention as a new diagnostic imaging technique in dentistry. The 3DX Multi-Image Micro CT® (3DX, Morita) is the first exclusively registered dental CT in Japan. A high-definition 3-dimensional image of a cylindrical imaging area, 40 mm in diameter and 30 mm in height, can be taken by using a small-type...

AIM To present a newly developed cone beam computerized tomography system (3DX Micro-CT) and its application in endodontic surgery. SUMMARY Cone beam CT has attracted considerable attention as a new diagnostic imaging technique in dentistry. The assessment of fractured endodontic instruments and the planning of endodontic surgery present challenges that conventional radiography cannot meet su...

OBJECTIVE This research compared the field of view with the tissue absorbed dose and effective doses using the two dental cone beam computed tomography (CBCT) scanners. MATERIALS AND METHODS Two CBCT devices, an Alphard VEGA and 3DX multi-image micro CT MCT-1, were used. Measurements were made using an Alderson RANDO phantom and thermoluminescence dosimeters (TLDs). The calculation of the eff...

Previously, numerous three-dimensional finite element (FE) models of the dentoalveolar complex have been developed and stress analyses of orthodontic tooth movements were reported. Most of the models were, however, developed based on average anatomical data, but not on individual data. The aim of this study, therefore, was to investigate dentoalveolar stress distribution by lingual and distal t...

Lyme disease test results for >9,000 dogs were collected from participating veterinary clinics. Testing was conducted by using the IDEXX 3Dx kit, used widely by Maine veterinarians to screen clinically normal dogs during heartworm season. This study demonstrates how this test can be a valuable public health disease surveillance tool.

This paper presents a novel methodology to deal with the problem of trajectory tracking in WMR. This new approach uses the dynamic model of WMR and allows perfect velocities tracking. Generally, the classic control approaches applied to the dynamic model of the robot solve the problem of trajectory tracking in two stages. In the first one is designed a controller that ensures the perfect tracki...