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Biomedical subjects

D J Wills

Publications and source records attributed to D J Wills.

At least 37 records · Page 2Linked to original sources
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↗
PubMedDate not supplied

A survey of nurses attitudes to AIDS related issues.

A small survey was undertaken to examine nurses attitudes to a wide range of matters relating to the management of patients and persons with AIDS, and the prevention of HIV infection. Strong support is shown for current AIDS related public health measures, particularly in the area of health education. Unnecessary measures like mandatory screening have scant support, and there is even less support for more extreme measures. Most nurses believe AIDS patients should be treated no differently than other disease sufferers. And while there is an awareness and concern about occupational transmission, most nurses approach or would approach caring for AIDS patients no differently than other patients. While, the study has some limitations, it nonetheless provides an interesting outline of nurses attitudes to a range of important issues.

Acquired Immunodeficiency Syndrome↗