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Biomedical subjects

F M Blair

Publications and source records attributed to F M Blair.

7 recordsLinked to original sources
PubMed1998

The hollow box maxillary obturator.

A case is reported assessing the problems encountered after surgical resection of the maxilla. The use of a hollow box obturator and details of its construction are described. The importance of skin grafting of the maxillary defect and use of available anatomical undercuts to optimise support and retention of the obturator is stressed. By provision of a lightweight hollow obturator, the weight of the prosthesis is kept to a minimum, helping retention, and allowing good resonance during speech. Initially the patient was to be assessed for an implant retained prosthesis, however, a satisfactory conventional prosthesis met the functional and aesthetic needs of the patient and avoided the need for further surgery for placement of implants.

Denture Design↗
PubMed1997

Restoration of the edentulous maxilla.

A case is presented which highlights the problems encountered when using an implant-stabilised overdenture in an edentulous upper jaw, opposed by a natural dentition.

Aged↗
PubMed1997

Secondary retention of multiple permanent teeth.

An unusual case of secondary retention of multiple permanent teeth is reported. The clinical, radiographic and histological findings associated with this condition, and its management, are discussed.

Adult↗
PubMed1997

The traumatic anterior overbite.

The position of the anterior teeth and skeletal base relationship establish many of our facial characteristics, yet these same tooth positions can result in a range of dental problems that are often specific for a particular incisal relationship. Excessive loss of tooth tissue on various surfaces may result in trauma to the soft tissue and temporomandibular joint dysfunction. A range of treatment options may be required and can often be conveniently classified by the form of incisal relationship.

Crowns↗
PubMed1996

A survey of the methods of disinfection of dental impressions used in dental hospitals in the United Kingdom.

The potential for cross-infection from microbial contaminated dental impressions has long been recognised. This study set out to investigate impression decontamination procedures currently used in UK dental hospitals (1995) and to see how these may have changed since a previous survey, carried out in 1988. A variety of disinfection solutions and regimes were highlighted both within and between dental hospitals. Several of the disinfecting solutions currently being used have not been specifically tested for efficacy with impression materials. The laboratories were asked to highlight any adverse reactions. Five laboratories reported that some alginates resulted in casts with poor surface properties when immersed in hypochlorite (0.1 and 1%), sodium dichloroisocyanurate, and 2% glutaraldehyde solutions. This paper highlights that there is no universally recognised impression disinfection/sterilisation protocol. It is recommended that all impressions should at least undergo a disinfecting procedure by immersion in 1% sodium hypochlorite for a minimum of 10 minutes.

Dental Impression Materials↗
PubMed1995

The physical properties of a gallium alloy restorative material.

OBJECTIVES: This study was conducted to compare the physical properties of a gallium alloy restorative material and a widely used mercury-containing dental amalgam. METHODS: Although the specimens were not prepared according to ISO specifications, specimens of both materials were subjected to ISO standard (ISO 1559; 1986) tests. The results were analyzed by ANOVA, Mann-Whitney U test and Student's t-test. RESULTS: The gallium alloy showed setting expansion which was greater than that for the other amalgam and greater than the upper limit set by the ISO standard. For other properties, gallium alloy performed as well as, and in the case of creep, was superior to that of the amalgam. SIGNIFICANCE: The gallium alloy proved difficult to manipulate even when using the PTFE coated instruments recommended by the manufacturer. It is suggested that while the material may prove to be a viable alternative to conventional dental amalgam, a considerable improvement in its handling characteristics would be required before it would gain widespread acceptance for clinical use.

Alloys↗