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Biomedical subjects

D J Wills

Publications and source records attributed to D J Wills.

At least 19 recordsLinked to original sources
PubMed1991

A survey of nurses views on the latest health service 'reforms'.

A small survey was carried out to measure nurses views on the latest changes planned by the Government for the health service. Data were collected by questionnaire from a small convenience sample of nurses from throughout New Zealand. The majority of respondents indicated that they oppose the changes overall. All key aspects of the latest reforms are opposed by a clear majority. However, the survey had a number of limitations; in particular a very low return rate.

Attitude of Health Personnel↗
PubMed1978

Viscoelastic properties of the periodontal ligament and mucous membrane.

Load deformation studies were carried out on the maxillary arches of three adult Macaca irus monkeys using tooth-borne and tissue-borne plates. By means of an electronically controlled dynamometer, forces with different loading rates, creep, and simulated chewing loads were applied to the plates. The displacement was measured electronically relative to posterior teeth using a linear variable displacement transducer. The six main viscoelastic features noted by other workers for individual teeth under load have been confirmed for the test plates and can be attributed to the connective tissues in the periodontium and in the mucosa. The magnitude of displacement of the tissue-borne plate, however, was appreciably greater than for the tooth-borne plate, and the recovery was far slower. Reducing the part of the plate in contact with mucosa produced greater intrusion, and reducing the number of teeth supporting the tooth-borne plate produced greater displacement.

Acrylic Resins↗
PubMed1975

A method of studying the effects of reduced alveolar support on the sensibility to axial force on the incisor teeth in humans.

A method has been developed for measuring the threshold level of sensibility to axial pressures applied to the incisor teeth in man. Eight subjects were investigated, four with support reduced by up to 60% as a result of chronic periodontal disease. Reduced alveolar support appears to have no significant effect on the threshold of perception. All subjects had a lower threshold for the removal of force than for its application. Infiltration of local anaesthetic labially over the test tooth resulted in failure to feel forces previously recognised, thus confirming the role of the periodontal receptors in force perception.

Adult↗