title: [A study of errors of radiography in 10000 intraoral periapical radiographs]
abstract: A total of 10000 full-mouth radiographs (10000 periapical radiographs were evaluated for radiographic errors.The result showed that four major types of errors were found in this study,They are cone cutting(5.59%),incorrect vertical angulation(38.84%),incorrect horizontal angulation(37.16%),and incorrect film placement (14.16%).The incidence of radiographic technique errors was 0.096%.Most errors were caused by incorrect vertical angulation and incorrect horizontal angulation(76%).Most errors were found in the cuspid premolar regions(70.6%)
authors.affiliation: Department of Oral Radiology,School of Stomatology,Shanghai Second Medical University. Shanghai 200011, China.
authors.forename: Z L
authors.initials: ZL
authors.lastname: Zhang
authors.forename: X
authors.initials: X
authors.lastname: Yang
authors.forename: Y
authors.initials: Y
authors.lastname: Zhao