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Abstract
The position of the bolus has been examined by a cineradiographic method in 11 wearers of full upper and lower dentures. The dentures had all been worn for 6—12 months. In checks of the recording and analytical methods the error of the method was found to be small, so that the reliability of the method can be considered satisfactory. The test foods were bread and toffee, with the addition of 30 per cent of barium contrast medium. The chewing pattern was analysed continuously over 20 cycles.
For toffee there were significant differences between the segments (Tables III and IV). The highest frequency of use was recorded for the premolar segment (Table III). It would thus seem that the position of the bolus is dependent on the properties of the food (Figs. 5 and 6).
Bread was distributed fairly uniformly over the arch, there being no significant differences between the segments (Tables III and IV).