Radiography Continued »


may be, in part, to assessors not knowing the purpose the radiograph was taken for, instead assessing it on a set of predefined standards. It was therefore decided to assess the images based on errors present and not score each individual radiograph. This is an interesting finding and may present a future opportunity to examine the subjectivity of the FGDP three point scoring system for dental radiographs.


Recommendations From our results, we were able to highlight the proportion of images in which errors could be identified. This will enable us to provide practitioners motivation to audit their own images in order to improve the quality of radiographs taken. Furthermore, in highlighting the incidence of certain types


of common radiographic errors, our results will provide practitioners with information on which specific issues to address with regards to their radiographs/ radiographic technique.


REFERENCES


1V.E. Rushton, K. Horner, H.V Worthington, Factors influ- encing the selection of pano- ramic radiography in general dental practice, Journal of Dentistry 1999 (27, 8), 565-571 2Faculty of General Dental Practitioners, Selection Criteria for Dental Radiography 2nd Ed. 3K. Horner, P.N.Hirshmann, Dose reduction in dental radiography, Journal of Dentistry1990, (18, 4), 171-184 4National Radiological Protec- tion Board (NRPB), 2001. Guid- ance Notes for Dental Practi- tioners on the Safe Use of X-ray Equipment. Chilton, Oxford: NRPB. Available from: https:// www.hpa-radiationservices. org.uk/dxps/resources/


Fig 9


Frankfort plane error – patient pa Patient positioning error – patient rotated ositioned ‘chin up’


Fig 10


Scratched and delaminated plate


Fig 11


Patient positioning error – pa- tient positioned too far forward


Fig 12


Vertical angulation error, under exposed and collimation error


Fig 13


Underexposed image – ‘contrast error’


Scottish Dental magazine 63


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