[A study of errors of radiography in 10000 intraoral periapical radiographs].

Shanghai Kou Qiang Yi Xue

Department of Oral Radiology,School of Stomatology, Shanghai Second Medical University. Shanghai 200011, China.

Published: September 1995

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%)

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