title: [Evaluation of direct digital radiography image quality in dentistry].
abstract: OBJECTIVE
  To evaluate the quality of direct digital radiograph according to its application in dentistry.
  
  
  METHODS
  1195 patients with dental caries, periodontal diseases, periapical diseases, trauma of teeth or hypodontia were tested with Trophy elitys Radio Visio Graphy(RVG) and the quality of the tests was evaluated at four levels.
  
  
  RESULTS
  It was convenient to operate RVG and easy to save the images, which reduced the amount of X-rays. 1587 pictures were taken, among which 92.3% was at level I, 6.3% was at level II,1.14% was at level III and level IV.
  
  
  CONCLUSIONS
  The quality of the images at different positions is good, which can meet the requirement for clinical diagnosis. However, the radiography receptor should be improved for better images.
authors.affiliation: Department of Dentistry, the Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou 545005, Guangxi Province, China. lzwangfq@163.com
authors.forename: Feng-Qiong
authors.initials: FQ
authors.lastname: Wang
authors.forename: Wen
authors.initials: W
authors.lastname: Huang
authors.forename: Yan-Ling
authors.initials: YL
authors.lastname: Qin
authors.forename: Xiao-Dan
authors.initials: XD
authors.lastname: Qin
authors.forename: Yi-Fang
authors.initials: YF
authors.lastname: Jiang
authors.forename: Xiao-Ning
authors.initials: XN
authors.lastname: Tu
authors.forename: Xiao-Jie
authors.initials: XJ
authors.lastname: Chang
mesh_terms: D003731:Dental Caries / Q000000981:diagnostic imaging*; D006801:Humans; D011856:Radiographic Image Enhancement; D019252:Radiography, Dental, Digital