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Biomedical subjects

D J Neill

Publications and source records attributed to D J Neill.

12 recordsLinked to original sources
PubMed1989

Functional loading of the dentition during mastication.

A method is described whereby the electrical activity in the masseter muscles is used as an index of chewing force. By using the kinesiograph, it was possible to determine the interrelationship of the phases of the chewing cycle and to measure the duration of each phase. On the basis of a pilot study of 10 dentate subjects and two complete denture wearers, it appears that, although the magnitude of the applied load is reduced in denture wearers, this is to some extent compensated for by an increase in the time it is applied. The results also suggest that a greater force is applied to the supporting mucoperiosteum when inverted cusp teeth are used in the construction of the dentures.

Bite Force↗
PubMed1982

Identifying the denture space.

In the absence of pre-extraction records, the positioning of teeth on complete dentures is a somewhat arbitrary procedure. The present study was designed to evaluate a number of different criteria for tooth placement. Miniature foil strain gauges were used to measure the forces brought to bear on complete dentures by the lingual and peri-oral musculature. Previous studies of the pattern of post-extraction resorption found that the vestige of the lingual gingival margins of the maxillary teeth could be identified on the cast and it was suggested that these biometric guides are reliable for the correct placement of the upper artificial teeth. The results reported confirmed the use of biometric guides to tooth placement as a reliable method of positioning the teeth in Class I edentulous cases.

Dental Impression Materials↗