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Biomedical subjects

F J Burke

Publications and source records attributed to F J Burke.

At least 19 recordsLinked to original sources
PubMed1995

The dentine-bonded ceramic crown: an ideal restoration?

The principles used in the bonding of porcelain veneers may also be applied to full-coverage restorations, with such crowns luted using resin-based materials. For these full coverage restorations, dentine bonding agents, preferably of low film thickness, may be used to treat areas of exposed dentine prior to placement. These 'dentine-bonded' all-ceramic crowns may exhibit many favourable characteristics, including those of good aesthetics and peripheral blend with gingival tissues and the potential for placement on conservative preparations which may minimise the risk of pulpal damage. Indications include cases in which conventional crowns require replacement, those in which minimal preparation techniques are appropriate, and those in which there has been tooth surface loss. Contraindications include subgingival margins, extreme occlusal interferences and insufficient tooth substance for bonding. However, the longevity of these restorations is, as yet, unknown, in the absence of long-term clinical data.

Crowns↗
PubMed1995

Occupational stress and dentistry: theory and practice. Part I. Recognition.

Dental practice has been considered to be the most stressful of the health care professions. Increasingly dentists in general practice seem to experience more physical and mental ill health compared with other health professionals and this has been recognised to be a consequence of occupational stress. Occupational stress has been related to changes in clinical dental practice with many of the perceived causes being within the dentist's own control. Since dentists are faced daily with these potential occupational stressors one way of controlling stress is through its recognition. This paper highlights experiences common to all those in dental practice as a first step in reducing occupational stress.

Dental Care↗
PubMed1995

Occupational stress and dentistry: theory and practice. Part II. Assessment and control.

Since dentistry has been identified as being a stressful profession, dentists, with the help of the members of the dental team, must attempt to achieve a relatively stress-free working environment. In addition to recognising potential occupational stressors it is important for dentists to be able to assess their emotional responses to the practice of dentistry and to arrange their daily working lives in such a way as to reduce occupational stress. This paper examines the means by which dentists may assess occupational stress as well as person-centred and/or situation-centred strategies of coping with and controlling occupational stress in general dental practice.

Adaptation, Psychological↗
PubMed1995

Oral health index.

Explore the source record for details and available documents.

Health Status Indicators↗
PubMed1995

Factors associated with skin irritation of the hands experienced by general dental practitioners.

Practising dental surgeons are now wearing gloves for longer periods of time than any other comparable group. As part of a study to assess dentists' attitudes to cross-infection, a questionnaire was sent to 1950 randomly selected general dental practitioners in England and Wales, with information being requested concerning the incidence of skin irritation of the hands considered to be associated with glove wearing. The response to the questionnaire was 61%, with 29% of respondents indicating that they experienced skin irritation. A strong association was identified between pattern of glove wearing and incidence of skin irritation, with routine glove wearers being more likely to suffer skin irritation than occasional glove wearers. Female respondents were also more likely to have experienced skin irritation than male respondents. No association was identified between reported incidence of skin irritation and practising arrangements, years since graduation and number of years of glove wearing.

Attitude to Health↗
PubMed1995

Indirect composite preparation width and depth and tooth fracture resistance.

PURPOSE: To evaluate the influence of preparation width and depth on the fracture resistance of teeth restored with one type of indirect composite restoration. MATERIALS AND METHODS: Variations of depth and width were superimposed on a preparation of dentin design and dimensions with other variables including tooth size and morphology being controlled. Indirect composite restorations were constructed and placed in accordance with manufacturer's instructions. The restored teeth were subjected to compressive loading with fracture being induced by application of a 4 mm steel rod to the specimens in a universal testing machine, at a cross-head speed of 1 mm/minute. RESULTS: Preparation depths of 3 to 4 mm were found to be preferable, but when the prevalence of severe tooth fracture was assessed, the shallower preparation depth was found to be indicated. Cavity depths of one-third and one-half bucco-lingual width were evaluated, the fracturing forces for the group with the narrower width being statistically lower.

Analysis of Variance↗
PubMed1995

The four generations of dentin bonding.

The achievement of an adhesive bond between enamel and dentin and restorative materials has been an objective for generations of dental research workers. Dentin bonding agents have been classified into generations, with earliest generations showing unreliable bond strengths. Some currently available systems show in vitro shear bond strengths to dentin which are similar to the bond strength to enamel, this being considered an ideal property. Alongside other previously recognized ideal properties, appropriate criteria for state-of-the-art dentin bonding systems at the present time may be considered to include the ability of systems to operate in moist environments and be technique insensitive.

Dental Bonding↗
PubMed1995

The effect of variations in bonding procedure on fracture resistance of dentin-bonded all-ceramic crowns.

This in vitro study investigated the effect of dentinal bonding and ceramic etching procedures on the fracture resistance of all-ceramic crowns. These results were compared with the fracture resistance of similar crowns placed with a nonadhesive conventional cement. All results indicated that superior fracture resistance was obtained when dentinal bonding was incorporated into the luting procedure together with etching of the ceramic fitting surface and the use of resin-based luting material. The fracture resistance of specimens luted with such a procedure was significantly greater than that of specimens in which a conventional nonadhesive cement was used.

Acid Etching, Dental↗
PubMed1992

Tooth fracture in vivo and in vitro.

The incidence, causes and methods of investigating tooth fracture are reviewed. This is a problem of increasing clinical significance, with many predisposing factors. Large restorations and extensive carious lesions tend to be associated with most fractures, with fracture incidence being higher in first permanent molars than other tooth types, especially in the lower jaw. Tooth anatomy influences fracture incidence, as does the functional force applied to cusps. Fracture risk in restored teeth may be reduced by cuspal coverage. Traditional tooth fracture investigations using destructive techniques provide valuable information; however, replica and nondestructive techniques are also of value.

Age Factors↗
PubMed1992

Glove use by orthodontists: results of a survey in England and Wales.

Attitudes to glove wearing during treatment of patients were tested by distribution of a questionnaire to 2000 dentists known to be practising under the National Health Service regulations in England and Wales. Of the dentists who replied, 41 specialist orthodontists, representing approximately one-sixth of all orthodontists working in the general dental services in England and Wales, were identified. Results indicate that 39 per cent of these orthodontic respondents wore gloves routinely for all patients and procedures, while 49 per cent wore gloves for some patients or procedures, with 12 per cent never wearing gloves. Reasons given by the occasional glove wearers for not wearing gloves routinely included loss of tactile sensation, perceived small risk, lack of comfort, and restriction of movement. Six per cent of those who replied had experienced skin irritation considered to be associated with glove wearing, while latex gloves were preferred by 78 per cent of respondents who wore gloves.

Attitude of Health Personnel↗
PubMed1992

Aesthetic tooth modification for patients with cleft lip and palate.

Alongside orthodontic treatment, tooth shape modification may be indicated for teeth associated with clefts of the lip and alveolus, and in non-carious teeth, minimal tooth preparation techniques appear to be most appropriate. Two methods of tooth shape modification are described. In one, hybrid composite materials, bonded to tooth enamel using the acid-etch technique, may be considered to provide a permanent, low cost, aesthetically satisfactory result, often without tooth preparation and with minimal operating time. Alternatively, indirect veneers may be appropriate for treatment of more severely malformed teeth.

Anodontia↗
PubMed1991

Glove use in clinical practice: a survey of 2000 dentists in England and Wales.

Attitudes to glove wearing by dentists practising within the NHS Regulations were tested by means of a questionnaire distributed to 2000 dentists in England and Wales. The response was 76.5%. The results indicate that 68% of the respondents wore gloves routinely for all patients and procedures, 3% never wore gloves, while the remainder (29%) wore gloves for only selected patients or selected procedures. Reasons given for not wearing gloves routinely included problems of comfort, loss of tactile sensation and the risk of cross-infection, which was perceived to be small. Of the routine glove wearers, only 12% changed gloves between patients, cost being considered to be a factor by 57% of respondents who used gloves for more than one patient. The results indicate that the respondents practising and personal details had an influence on the pattern of glove wearing, with single-handed practitioners and those who graduated before 1979 being less likely to wear gloves routinely. Comparison with the findings of earlier studies of similar type suggest that there is increased awareness in the dental profession of the necessity for glove wearing, but that there is still a need to encourage routine glove use, especially amongst certain groups of GDPs.

Age Factors↗
PubMed1991

Current status and rationale for composite inlays and onlays.

Composite inlay systems, now available to the dental profession, are classified and evaluated. Principle motives for their deployment are the aviodance or reduction of in situ polymerisation shrinkage and the optimisation of restoration contour and adaptation. The criteria for placement of direct or indirect composite inlay restorations are critically reviewed in relation to alternative materials and operative procedures. Dimensions of typical molar and premolar inlay cavities are presented and interim guidelines for inlay cavity design are discussed.

Composite Resins↗