Mupparapu M, Jariwala S, Singer S R, Kim I H, Janal M
Department of Diagnostic Sciences, UMDNJ-New Jersey Dental School, 110 Bergen Street, Newark, NJ 07101-1709, USA.
Dentomaxillofac Radiol. 2007 May;36(4):224-8. doi: 10.1259/dmfr/91136616.
To compare the re-exposure rates of dental radiographs taken over a period of 1 year between dental students and trained dental assistants at a university-based oral and maxillofacial radiology clinic.
Detailed records of the number and type of intraoral radiographs taken by the students and staff members and the number of re-exposures that were required from July 2003 to July 2004 were used. Statistical analyses were performed on the data.
A chi2 test showed that re-exposure rates of radiographic series between students and staff were statistically different. When comparing the students' re-exposure rates during each of the four quarters of their radiology rotation, one-way analysis of variance test showed that the results were not statistically significant for reduction in the number of re-exposures over the entire year.
There were significant differences in the re-exposure rates between staff dental assistants and students. Film re-exposure rates for the students during the four quarters were expected to decrease with time. Instead, the consistency of the re-exposure rates of the students during the four quarters demonstrates the need to recognize why the students did not perform better as the year progressed. The percentage of films that needed to be re-exposed by either group (students or the staff dental assistants) was not extremely high.
比较在一所大学口腔颌面放射科诊所中，牙科学生和经过培训的牙科助理在1年时间内拍摄牙科X光片的再次曝光率。
使用了2003年7月至2004年7月期间学生和工作人员拍摄的口腔X光片数量及类型的详细记录，以及所需再次曝光的数量记录，并对数据进行了统计分析。
卡方检验显示，学生和工作人员之间X光片系列的再次曝光率在统计学上存在差异。在比较学生放射科轮转四个季度中每个季度的再次曝光率时，单因素方差分析表明，全年再次曝光次数减少的结果在统计学上并不显著。
牙科助理工作人员和学生之间的再次曝光率存在显著差异。预计学生在四个季度中的胶片再次曝光率会随时间下降。相反，学生在四个季度中再次曝光率的一致性表明，需要认识到随着时间推移学生表现未更好的原因。两组（学生或牙科助理工作人员）需要再次曝光的胶片百分比都不是极高。
