搜索结果: 1-13 共查到“口腔正畸学 Digital”相关记录13条 . 查询时间(0.187 秒)
Literature review Digital Subtraction Radiography in Dentistry
Literature review Digital Subtraction Radiography Dentistry
2009/4/2
Introduction: Radiographs provide unique information about the status of periodontium and
permanent records of condition of bone throughout the course of the disease. Interproximal images record th...
Digital Image Enhancement of Cephalograms.
The Relationship between Digital Model Accuracy and Time-Dependent Deformation of Alginate Impressions
Digital model Alginate impression 3Shape
2010/3/5
Objectives: To investigate the effects of different storage periods of alginate impressions on digital model accuracy.
Materials and Methods: A total of 105 impressions were taken from a master mod...
Digital imaging of cephalometric radiographs, part 2：image quality
Cephalometry Digital imaging Image quality
2009/1/9
The aim of this study was to compare the diagnostic quality of conventional cephalometric radiographs with that of digital image counterparts. The random error associated with angular and linear m...
Digital imaging of cephalometric radiography, part 1：advantages and limitations of digital imaging
Cephalometry Digital imaging
2009/1/9
Digital imaging has several potential advantages over traditional cephalometry. These include storage, transmission, and enhancement of images, reduced exposure to radiation for patients, and the poss...
Comparison of Landmark Identification in Traditional Versus Computer-Aided Digital Cephalometry
Computer-aided cephalometric analysis Digital imaging Landmark identification
2009/1/4
The aim of this study was to assess landmark identification on digital images in comparison with those obtained from original radiographs. Ten cephalometric radiographs were selected randomly. Sev...
Perception of Facial Esthetics by Native Chinese Participants by Using Manipulated Digital Imagery Techniques
Native Chinese Facial esthetics Digital imagery Video morphing
2008/12/26
This investigation utilized a manipulated digital video imaging model to elicit profile facial esthetics preferences in a lay population of native Chinese participants from Beijing. A series of 4 ...
Dose Reduction by Direct-Digital Cephalometric Radiography
Digital radiography Dosimetry Patient's exposure Dose reduction
2008/12/26
Patient radiation exposure was determined for conventional and direct-digital cephalometric radiography. An anthropomorphic phantom was positioned to expose lateral cephalographs from the patient'...
Enhanced Speed and Precision of Measurement in a Computer-Assisted Digital Cephalometric Analysis System
Computer-assisted cephalometric analysis Digitized imaging Speed Precision
2008/12/15
The computer-assisted digital cephalometric analysis system (CADCAS) may reduce the time required for cephalometric analysis, especially for taking measurements. Aimed at estimating the time saved b...
The Accuracy and Reliability of Measurements Made on Computer-Based Digital Models
Efficacy Effectiveness Digital models
2008/12/11
For reasons of convenience and economy, orthodontists who routinely use and maintain pre- and posttreatment plaster casts are beginning to use computer-based digital models. The purpose of this st...
An Evaluation of the Use of Digital Study Models in Orthodontic Diagnosis and Treatment Planning
Digital models Orthodontics
2008/11/27
The purpose of the present study was to determine the diagnostic and treatment planning value of digital models when compared with plaster study casts. In addition, the level of orthodontic experien...
Measurement of White Lesions Surrounding Orthodontic Brackets: Captured Slides Vs Digital Camera Images
Orthodontics Image analysis Demineralization
2008/11/26
Digital images provide an efficient means of processing and storing clinical images and are increasingly being used in orthodontic practice. However, for research purposes it must be shown that me...
Polarized Versus Nonpolarized Digital Images for the Measurement of Demineralization Surrounding Orthodontic Brackets
Orthodontics Dental caries Image analysis Demineralization Cross-polarization
2008/10/29
Objective: To compare the assessment of demineralized white lesions surrounding orthodontic brackets using images produced with and without polarizing filters to reduce incidental flash reflection.Mat...