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Biomedical subjects

F H Sippy

Publications and source records attributed to F H Sippy.

8 recordsLinked to original sources
PubMed1984

A clinical comparison of speed group D and E dental x-ray films.

This study was conducted to determine the clinical diagnostic quality of the new higher-speed Ektaspeed E x-ray films when compared with the diagnostic quality of the lower-speed Ultraspeed D x-ray films. The study also attempted to determine the advantages of 70 versus 90 kVp. The results indicated that the E film at 90 kVp was slightly better than the E film at 70 kVp and the D films at either 70 or 90 kVp. Although the differences were statistically significant, average rating for all films fell within the range of acceptability.

Evaluation Studies as Topic↗
PubMed1983

A comparison of rectangular and cylindrical collimation for intraoral radiographs.

This study was conducted to compare the type and frequency of cone-cuts that occur with rectangular and cylindrical collimation in dental radiography. Thirty-eight hundred radiographs, half made with cylindrical cones and half made with rectangular cones, were examined for major and minor cone-cuts. A total of 156 cone-cuts was found. Thirty-three of these were of the major category, 86 percent of which occurred with rectangular collimation. Although cone-cuts appeared much more frequently when a rectangular cone was used, a significant reduction in useless radiation makes this type of collimation a worthwhile consideration.

Equipment Design↗
PubMed1977

Analysis of interpretations of full-mouth and panoramic surveys.

The purposes of this study were to determine differences in interpretation of radiographic findings of full-mouth and panoramic surveys by junior and senior dental students and differences in their interpretive skills. The parameters of interest were caries, incipiencies, lamina dura interruptions, periodontal membrane changes, and periapical bone changes. The questions to be answered regarding the differences between the full-mouth and panoramic surveys were: (1) In which type of radiograph were the most lesions found? (2) In which type of radiograph are the most "non-existing" lesions found? (3) In which type of radiograph are the most lesions undetected? (4) Does the junior or senior dental student demonstrate the most accuracy in his interpretation?

Alveolar Process↗