124
199.09
1.61
156

Publication History View all

  • [Show abstract] [Hide abstract]
    ABSTRACT: This is the first part of a review comparing the pathology of salivary and mammary glands. Here, less obvious similarities and differences in functional histology and their influences on pathology are examined with emphasis on myoepithelial cells, stromal components, analogues of mucosa-associated lymphoid tissue, steroid receptors, and intraparenchymal cells of monocytic lineage. Particular cell phenotypes (oncocytic, apocrine, neuroendocrine and clear) are critically evaluated and responses to atrophy, infarction and fine-needle aspiration biopsy procedures are highlighted together with aspects of metaplasia, regeneration, ageing and microcalcification. Areas of controversy or uncertainty which may benefit from further investigations are also discussed.
    Archives of Oto-Rhino-Laryngology 05/2013;
  • [Show abstract] [Hide abstract]
    ABSTRACT: To assess the color difference values that represent the perceptibility and acceptability thresholds of denture teeth. Eighteen interchangeable right upper central incisors denture teeth were selected to have color difference values from representative left upper central incisor denture tooth in a range of 0.4-11.4 ΔE* units measured with a spectrophotometer (CM 2600d, Minolta Konica, Japan). These teeth were placed in an artificial dental arch in a phantom head. Under controlled conditions, a total of 80 observers divided into 4 groups (technicians, nurses, dentists and researchers) were asked to report the perceptibility and acceptability of each of the color difference values. The findings was then analysed using logistic regression for determining the perceptible and acceptable thresholds of dental color differences. The determined color difference values at which 50% of all observers could detect a color difference (50:50 probability) was 1.9 ΔE* units with a 95% confidence interval and ranged from 1.7 ΔE* units to 2.1 ΔE* units. The determined color difference value at which 50% of all observes preferred to replace the tooth because of unacceptable color difference (50:50 probability) was 4.2 with a 95% confidence interval that ranged from 3.9 ΔE* units to 4.7 ΔE* units. Within the limitation of this study, the following conclusions were made: 1. The mean color perceptibility threshold was significantly lower than the mean color acceptability threshold. 2. Significant differences between different observers groups were noticed in determination of perceptibility and acceptability of color differences. The technicians groups displayed lower perceptibility and acceptability limits than the dental nurses and non-dental observers. When shade matching artificial denture teeth to natural teeth, 50:50 perceptibility (1.9 ΔE* units) and acceptability (4.2 ΔE* units) thresholds are used to compare color difference values. The technicians group displayed lower perceptibility and acceptability limits than other observers.
    Journal of dentistry 05/2012; 40 Suppl 1:e10-7.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Abstract -  The use of mineral trioxide aggregate (MTA) to achieve root end closure has many advantages over the traditional calcium hydroxide (Ca(OH)(2) ) technique including the reduced number of visits and the reduced mechanical damage to dentine. Limited studies have reported the outcome of using MTA as an apexification material and a one-stage obturation technique in non-vital immature teeth. This article illustrates three successful clinical cases where MTA was used as an apexification material. In case study one: Type 1 Dens Invaginatus tooth with incomplete root formation, case study two: an immature tooth that suffered pulp necrosis following an enamel and dentine fracture trauma and case study three: a non-vital tooth following an apical root fracture.
    Dental Traumatology 03/2012;
  • [Show abstract] [Hide abstract]
    ABSTRACT: The dental management of the elderly individual is becoming more of an issue in both general dental practice and specialist prosthodontic practice. This is because, in general, the population is living longer and often elderly patients are retaining their natural teeth into their old age. In addition, there are often related significant medical, social and oro-dental issues that require consideration. CLINICAL RELEVANCE: The dental management of the elderly patient is an increasing problem. This paper seeks to consider the main relevant issues pertaining to this important subject area.
    Dental update 03/2012; 39(2):141-3.
  • [Show abstract] [Hide abstract]
    ABSTRACT: The aim of this study was to evaluate the differences in colour between dental porcelain and porcelain-repairing resin composites. Porcelain discs were fabricated using four dentine shades in 1mm and 2mm thicknesses. Another series of discs was fabricated in 1mm and 2 mm thicknesses using three different brands of composite. Four single shades were used for the 1mm thick discs, and four single and 12 combined shades for the 2mm thick discs. The colour was measured using a spectrophotometer and colour differences deltaE* were calculated between samples. Colour differences were in the range of (deltaE* = 3.5-26.9), above the accepted threshold for perceptibility (deltaE* > 1) with a number above the threshold for what is considered to be clinically acceptable (deltaE* > 5.5). Improvements in colour match were seen for certain shade combinations of repairing composites, in contrast to when a single shade of composite was used.
    The European journal of prosthodontics and restorative dentistry 03/2012; 20(1):3-9.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: This article provides a personal perspective on how both dentistry and dental education have changed over the past 30 years. The discussion spans transformations in infection control, dental materials, techniques and outreach.
    British dental journal official journal of the British Dental Association: BDJ online 01/2012; 212(10):473-4.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: To evaluate the ability of apex locators as a tool in determining working length in comparison to traditional working length radiographs in general dental practice. Randomised controlled clinical trial. General dental practices in the North West of England.Subjects Adults requiring root canal treatment of at least one tooth with minimal or moderate difficulty. Root canal treatment was carried out with the working length determined by apex locator in the treatment group (AL), and periapical radiograph in the control group (PA). The acceptability of the master cone gutta percha measured from a radiograph before obturation was used as the primary outcome. Twenty-one of 23 fillings in the AL group were judged as acceptable, compared to 17 of 23 fillings in the PA group. This difference was not statistically significant. In general dental practice, no significant difference was found in working length determined using apex locator combined with a master cone GP radiograph or using the conventional method. There is a need for larger trials to investigate these methods further.
    British dental journal official journal of the British Dental Association: BDJ online 12/2011; 211(12):595-8.
  • [Show abstract] [Hide abstract]
    ABSTRACT: This paper presents a series of case reports which demonstrate the replacement of the causes of tooth loss which primarily affect children by the use of all-ceramic resin-bonded bridges.
    Dental update 12/2011; 38(10):706-10.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: This study was designed to determine the effect of reflection and discussion of a group of dentists with differing backgrounds and qualifications in the management of failed endodontic treatment. During the Dental Pan-Society plenary session (16-17 November 2007) delegates (n = 393) were asked a series of questions on the management of a case with failed endodontic treatment of four maxillary incisors restored with linked crowns in a patient with a high smile line. The case had been previously posted on the conference website in addition to being presented on the day of the forum. Responses of delegates to predetermined questions and options on the management of the case were recorded using closed-circuit devices for each individual delegate. The questions were repeated after the case was opened up for discussion by the delegates in conjunction with a panel of leading experts. The discussion topics included the factors affecting the outcome of secondary root canal treatment, post-extraction changes and the options for prosthetic replacement including the provision of implants in the aesthetic zone. The initial response of the majority (58%) of delegates favoured extraction and prosthetic rehabilitation over endodontic retreatment of the affected teeth. Following the discussion this figure reduced to 50%. In respect to those individuals who were specialists, extraction was again the preferred option before the discussion for periodontists (74%), prosthodontists (64%) and restorative dentists (65%). This was in contrast to endodontists who preferred endodontic retreatment, with only 30% identifying extraction as the treatment of choice. Following the discussion, the number of periodontists and endodontists who favoured extraction reduced by 3% and 5% respectively, whereas the number of prosthodontists and restorative dentistry specialists who preferred extraction increased by 2% and 4% respectively. Reflection and discussion can make individuals reconsider their initial treatment decisions. These personal skills may become more significant when planning treatment for complex restorative cases.
    British dental journal official journal of the British Dental Association: BDJ online 02/2011; 210(4):164-5.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Recent changes to the system of remuneration and contracting arrangements with Primary Care Trusts (PCTs) has meant that dental practitioners in the UK have experienced several types of incentive and governance arrangements. This paper uses data from a qualitative study of 20 dental practitioners to examine the influence of different systems of incentives and governance on their motivational system. Results show that a perceived reduction in autonomy was the least acceptable aspect of the health reforms. The study also suggests that conflict between self-interested and altruistic motives may occur where medical professionals operate as independent contractors in a small business environment. Whilst dentists appeared to show altruistic motives towards their patients, priorities towards running an autonomous business enterprise meant that PCT managerial requirements, for example, to widen access were not welcomed, because of their impact on managerial autonomy. Moreover, whilst dentists' professional ethos appeared geared towards achieving technically high quality standards of work, this produced tensions against a background of cost containment in a fee-per-item system of remuneration. The paper raises issues such as the person-system interaction associated with professional and individual autonomy and the importance of reciprocity and fair payment.
    International Journal of Health Planning and Management 01/2011; 26(1):70-88.
Information provided on this web page is aggregated encyclopedic and bibliographical information relating to the named institution. Information provided is not approved by the institution itself. The institution’s logo (and/or other graphical identification, such as a coat of arms) is used only to identify the institution in a nominal way. Under certain jurisdictions it may be property of the institution.