Abstract:
:Over the past 30 years the 'traditional' gold alloy systems have been modified by reducing the percentage of gold and other noble metals to the point where the 'non-precious metal' alloys have no noble metal content. These include the nickel-based alloys, cobalt-based alloys and certain experimental alloys, all suitable for porcelain application. This application demands castability, compatibility with investments, suitable finishing properties, appropriate thermal expansion, chemical bonding with porcelain, solderability and biocompatibility. Recent research into these functional requirements has (1) confirmed the role of Cr in corrosion resistance; (2) related high fusion temperatures to surface roughness and inaccurate fit; (3) demonstrated the importance of casting size and thickness; (4) related castability to the choice of investment for a particular alloy; (5) provided a method for controlling the deposition of oxide film upon the casting; and (6) shown that the re-use of base metal alloy has an adverse effect upon the mechanical properties of the casting. The expense of manipulating the base metal alloys to some extent offsets their cost-benefit advantage over traditional gold alloys. It is possible that Cr will not remain freely available, in which case its price too will soar.
journal_name
Int Dent Jjournal_title
International dental journalauthors
Johnson LNsubject
Has Abstractpub_date
1983-03-01 00:00:00pages
41-8issue
1eissn
0020-6539issn
1875-595Xjournal_volume
33pub_type
杂志文章abstract::In France, a number of different forms of group practice co-exist. They differ in the number of members and their contractual relationships. 40 per cent of French dentists practise in groups; however, this figure falls to 26 per cent for the true group practices, in only 12 per cent of which are the fees pooled. In mo...
journal_title:International dental journal
pub_type: 杂志文章
doi:
更新日期:1986-06-01 00:00:00
abstract:OBJECTIVE:To describe the prevalence of dental pain and other oral health problems among a young Syrian adult population and to identify socio-demographic factors associated with these experiences. SUBJECTS:An industrial sample of 400 men and women aged 18-34 years from Damascus, Syria. METHODS:Study participants wer...
journal_title:International dental journal
pub_type: 杂志文章
doi:10.1111/j.1875-595x.2002.tb00641.x
更新日期:2002-12-01 00:00:00
abstract:OBJECTIVES: This study aims to investigate the economic hardships of dentists from the rapid reduction of incomes after the IMF crisis in Korea 1998, the retirement plan status of those dentists, and to provide the basic data to determine an economic retirement plan of dentists. METHODS: Among the 14,359 dentists in...
journal_title:International dental journal
pub_type: 杂志文章
doi:10.1111/j.1875-595X.2011.00065.x
更新日期:2011-10-01 00:00:00
abstract::Non-adherence to regimes recommended by health practitioners is prevalent in the health and safety area. Even the most effective of interventions does not tend to lead to substantial improvements in adherence. This paper reviews models from the health psychology sphere that predict which factors might lead people to p...
journal_title:International dental journal
pub_type: 杂志文章,评审
doi:10.1111/j.1875-595x.2000.tb00579.x
更新日期:2000-01-01 00:00:00
abstract::The requirements for luting agents for ceramic and polymeric inlays and onlays are reviewed and discussed. The current overriding consideration seems to be the chemical adhesion of the restoration to tooth substance and this is challenged as being an overambitious goal. The systems in use are principally the dual cure...
journal_title:International dental journal
pub_type: 杂志文章,评审
doi:
更新日期:1992-06-01 00:00:00
abstract::The aim of this study was to investigate the possible relationship between dental anxiety and heart rate prior to a dental checkup. Anxiety was determined in 44 patients using the Dental Anxiety Scale (DAS). Heart rate was measured 24 hours before, and immediately prior to, a dental checkup. The mean heart rate was hi...
journal_title:International dental journal
pub_type: 杂志文章
doi:
更新日期:1995-12-01 00:00:00
abstract:AIM:The objective of this study was to measure the microbial contamination released from dental unit air lines (DUAL) and dental unit water lines (DUWL). MATERIALS AND METHODS:Emissions from DUAL and DUWL from five dental units supplied by a central water source (tap) and a centralised air supply were sampled three ti...
journal_title:International dental journal
pub_type: 杂志文章
doi:10.1111/j.1875-595x.2004.tb00301.x
更新日期:2004-12-01 00:00:00
abstract:OBJECTIVE:To clarify the differences in dental health attitudes/behaviour among freshman dental students. DESIGN:Cross-cultural differences. SETTING:Japan, Hong Kong and West China. PARTICIPANTS AND METHODS:The original version of the Hiroshima University-Dental Behavioural Inventory (HU-DBI) was written in Japanese...
journal_title:International dental journal
pub_type: 杂志文章
doi:10.1002/j.1875-595x.2001.tb00833.x
更新日期:2001-06-01 00:00:00
abstract:OBJECTIVES:To analyse prescription of antibodies in emergency dental service according to antibiotic type, working diagnosis, patient visit time and patient demographic characteristics. Additionally, prescription practices among individual dentists were analysed. METHODS:The data in this retrospective cohort study wer...
journal_title:International dental journal
pub_type: 杂志文章
doi:10.1111/idj.12460
更新日期:2019-08-01 00:00:00
abstract:BACKGROUND:The aetiology of deciduous molar hypomineralisation (DMH) is still largely unknown. AIM:The aim of the study was to elucidate the occurrence of DMH as a function of the parameters of bone metabolism, as it is suspected that abnormalities in these parameters may affect the mineralisation of teeth. DESIGN:In...
journal_title:International dental journal
pub_type: 杂志文章
doi:10.1111/idj.12550
更新日期:2020-08-01 00:00:00
abstract::The purpose of the present investigation was to study Nordic dentists' experiences with patients concerned about the possible adverse effects of dental restorations, their perceived ability to deal with this problem and their views as to the suitability of amalgam as a filling material. A random sample of practising d...
journal_title:International dental journal
pub_type: 杂志文章
doi:
更新日期:1992-04-01 00:00:00
abstract::When primary health care (PHC) was developed and implemented in developing countries, oral health was not included. The present consequences are marked disparities in the distribution of oral health care, since conventional dentistry can only serve relatively few people and at high costs. Oral health care is virtually...
journal_title:International dental journal
pub_type: 杂志文章
doi:10.1111/j.1875-595x.1999.tb00528.x
更新日期:1999-08-01 00:00:00
abstract::To assess the nutritional status of a child, it is essential to know his chronological age. However, this is often not known accurately by the mothers of children in the Third World. The purpose of this study was an attempt to assess the chronological age of a child by a fairly reliable parameter, i.e. the number of t...
journal_title:International dental journal
pub_type: 杂志文章
doi:
更新日期:1990-06-01 00:00:00
abstract::Nuclear Magnetic Resonance (NMR) is the latest addition to medical imaging technology. This technique plays an important role in head and neck diagnosis. Radiologists may encounter patients with fixed dental prostheses that may produce image distortion on MRI scans of the face. The MRI appearances of dental prosthetic...
journal_title:International dental journal
pub_type: 杂志文章
doi:
更新日期:1992-08-01 00:00:00
abstract::This study reports the findings of a survey carried out in Zambia by a UK charity. 'Project Teeth Relief', which aims to provide basic pain relief and dental health education to the rural areas of Zambia. The survey investigated the dental health status of schoolchildren from two rural schools: 354 pupils aged 13-22 y...
journal_title:International dental journal
pub_type: 杂志文章
doi:
更新日期:1991-06-01 00:00:00
abstract::The overall picture for caries and periodontal disease in Europe has improved over the last years. A very marked decline in caries prevalence was seen in children and adolescents. According to the DMF-figures the caries prevalence in adults and seniors has not declined as rapidly. Yet also in this age group there is i...
journal_title:International dental journal
pub_type: 杂志文章
doi:10.1111/j.1875-595x.2001.tb00585.x
更新日期:2001-01-01 00:00:00
abstract::The common dental problems of caries and periodontal disease can be controlled by patients who are prepared to adopt the appropriate dietary and oral hygiene behaviours. However compliance with dental surgery based health education programmes is often disappointing. The failure of these interventions is due to the fac...
journal_title:International dental journal
pub_type: 杂志文章,评审
doi:
更新日期:1993-06-01 00:00:00
abstract:AIM:To study the effects of an application of chlorhexidine varnish (40%) on dental plaque. DESIGN:Randomised controlled clinical trial. SUBJECTS:40 patients (50% females), aged 25-34 years after undergoing any necessary restorative treatment. Exactly one half of these individuals practiced good oral hygiene, the eff...
journal_title:International dental journal
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/j.1875-595x.2002.tb00879.x
更新日期:2002-10-01 00:00:00
abstract::Failure to diagnose periodontal disease is a frequent and unnecessary error. A new periodontal screening examination has been proposed that will accurately detect periodontal disease in approximately five minutes and can be incorporated into a routine dental examination. Simplified treatment planning based on the find...
journal_title:International dental journal
pub_type: 杂志文章
doi:
更新日期:1977-06-02 00:00:00
abstract::Dentists in the Philippines were surveyed for evidence of past hepatitis A and B virus infections. Of the 234 dentists examined, 201 (85.9 per cent) were found to have been infected by HA virus and 137 (58.5 per cent) had been infected by HB virus. The proportion with evidence of past HB virus infection increased as t...
journal_title:International dental journal
pub_type: 杂志文章
doi:
更新日期:1986-12-01 00:00:00
abstract::While toothpaste F(-) concentration and rinsing regimen have well-characterised impacts on fluoride's effectiveness, other aspects of brushing regimen have much less well-established effects, in particular, dentifrice quantity and brushing duration. An in vivo study (n = 42) of oral fluoride delivery (i.e. oral dispos...
journal_title:International dental journal
pub_type: 杂志文章,随机对照试验
doi:10.1111/idj.12075
更新日期:2013-12-01 00:00:00
abstract:OBJECTIVES:Health interventions based on cognitive theories effectively bring about behaviour change. Therefore, the present study aimed to assess the determinants of oral hygiene behaviour (OHB) based on the theory of planned behaviour (TPB) among patients with moderate and severe periodontitis. METHODS:A cross-secti...
journal_title:International dental journal
pub_type: 杂志文章
doi:10.1111/idj.12413
更新日期:2019-02-01 00:00:00
abstract:OBJECTIVE:To describe the proportion of dental practitioners, currently practising in the UK, who are from different ethnic groups. METHOD:Analysis of data from the British Dental Association Omnibus Survey 2000. The sample comprised 970 qualified dentists in all fields of practice. FINDINGS:Dental practitioners from...
journal_title:International dental journal
pub_type: 杂志文章
doi:10.1002/j.1875-595x.2001.tb00818.x
更新日期:2001-02-01 00:00:00
abstract::The aim of this study was to compare the bonding of chemically-cured glass ionomer (polyalkenoate) cement (CGIC) and resin-modified glass ionomer cement (RGIC) to a ground ceramic surface (n = 6 per group). The ceramic surface was left untreated or treated with either commercial dental porcelain primer or with heat-cu...
journal_title:International dental journal
pub_type: 杂志文章
doi:10.1111/j.1875-595x.1997.tb00678.x
更新日期:1997-02-01 00:00:00
abstract::The Etruscans were a group of agricultural people who evolved into an urban population of craftsmen, traders, and navigators who lived in a network of cities and dominated the area of the Mediterranean around Italy in the 8th and 9th centuries BC. What has come to be known, and is of importance in our study of the his...
journal_title:International dental journal
pub_type: 历史文章,杂志文章
doi:10.1002/j.1875-595x.1997.tb00790.x
更新日期:1997-10-01 00:00:00
abstract:AIMS/OBJECTIVES:To compare, using two pH-cycling models, the de/remineralisation effects of children's toothpastes on primary teeth. DESIGN:In vitro single-section and pH-cycling models. METHODS:Primary teeth were placed in demineralising solution for 96 hours to produce artificial carious lesions 60-100 microm deep....
journal_title:International dental journal
pub_type: 杂志文章
doi:10.1111/j.1875-595x.2005.tb00319.x
更新日期:2005-08-01 00:00:00
abstract::This study, carried out in the region including Baltimore, Maryland, USA followed the pattern previously reported in the studies in Australia, New Zealand, Norway, Germany and Japan (Int. dent. J. 1976, 26, 317). In this area dental care is provided predominantly by payment of fees for service in private practice. Det...
journal_title:International dental journal
pub_type: 杂志文章
doi:
更新日期:1978-09-01 00:00:00
abstract::A special form and field manuals defining examination criteria were prepared for recording the following: 1. Number of teeth present both primary and permanent 2. Periodontal disease (a) Oral hygiene using the simplified oral hygiene index. (b) Periodontal condition using a modified P.I. index. (c) Periodontal treatme...
journal_title:International dental journal
pub_type: 杂志文章
doi:
更新日期:1976-09-01 00:00:00
abstract::The AIDS epidemic has caused widespread concern in the community and there has been a corresponding impact on dentistry. Dentists have seen themselves as vulnerable due to frequent exposure to blood and to the salivary pool, which may possibly be infective, either inherently or by reason of blood contamination. The fe...
journal_title:International dental journal
pub_type: 杂志文章
doi:
更新日期:1987-06-01 00:00:00
abstract::Continued ageing of the global population is expected to pose significant challenges to maintaining optimum lifelong health in individuals and populations. Oral health is an essential element of general health and quality of life throughout an individual's life course, yet it is often neglected in integrated approache...
journal_title:International dental journal
pub_type: 杂志文章
doi:10.1111/idj.12348
更新日期:2017-09-01 00:00:00