A study of errors of radiography in 10000 intraoral periapical radiographs
Zhang, Z.L.; Yang, X.; Zhao, Y.
Shanghai Kou Qiang Yi Xue 4(3): 142
1995
ISSN/ISBN: 1006-7248 PMID: 15160073 Document Number: 439893
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%)