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A series of 56 measurements was derived from lateral cephalometric radiographs of a large sample of subjects. These measurements were subjected to a principal-component analysis which resulted in a series of six components (factors). These factors, represented in general terms and in rank order of their percentage sample variability were as follows: Factor(More)
The purpose of this investigation was to study the pattern and constancy of temperatures recorded in the gingival crevices and some factors affecting them. The temperatures of the interproximal crevices in the maxillary and mandibular arch of 16 female dental hygiene students were evaluated at the time of examination, immediately afterwards and following a(More)
IN PERIODONTICS there is a need for objective measurements in monitoring disease processes and in assessing the effectiveness of treatment. The purpose of this study was to compare gingival temperatures with indicators of gingival inflammation in order to examine the application of temperature as a diagnostic aid. In six patients the temperature of(More)
The differences in susceptibility of animals to the lethal factor extracted from the mouse submandibular gland and magnitude of its lethality were compared among various species, strains, ages, and sex of mice. Comparisons of LD50 values computed by an IBM 360/System computer using a programmed probit analysis yielded the following significant results. The(More)
The EKG of twenty-four children (mean age = = 5.7 years) was individually and continuously recorded in a dental situation. Measures of cardiac activity (heart rate [HR] and heart rate variability [HRV]) were computed by means of a CDC 1,700 and an IBM 360 computer. Histograms of heart rate (HR) and heart rate variability (HRV) measures were generated.(More)