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UBC Theses and Dissertations

Dental panoramic radiograph position and preparation errors for mixed dentition patients Ridgway, Erika


Objectives: To determine whether patient age or patient sex affects the number of errors on dental panoramic radiographs (DPR) in the mixed dentition population. Methods: All DPRs taken at the UBC dental student clinic, during the study period, on 6 to 12-year-old patients were examined. The consecutive case series of 178 DPRs were obtained over a 4.5-year period. The primary reviewer was calibrated on 30 DPRs. Intra- and inter- reviewer reliability was assessed upon completion by examining a random sample of 20 DPRs. A total of 14 errors were examined for on each DPR. Results: A linear regression analysis showed that the number of DRP errors decrease as the patient age increases, but with a p-value of 0.102 this is not statistically significant so we cannot conclude that age has a significant relationship with the number of errors in a DPR. A p-value of 0.44 was obtained when evaluating the difference in the average number of errors per DPR for males and females. We failed to reject the null hypothesis and did not conclude that sex had a significant relationship to the number of errors. When errors were grouped, we rejected the null hypothesis up to 0.011% significance level and concluded that age has a significant relationship to the number of errors in a DPR. Trends for head tilting left and rotating right is likely due to the DPR room design and the door location. Conclusions: Patient age and sex do not significantly affect the number of errors in a DPR in the mixed dentition population. Communication between the operator and patient likely contributes to the presence of DPR errors.

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