摘要:

AbstractDespite the increased use of composite resin to restore posterior teeth, there is evidence that clinicians should be selective in their use of these restorations.This paper describes the clinical technique — preparatory procedures, preparation of the cavity, preparation for placement of composite resin, placement of composite resin and finishing of the restoration — for the relatively conservative use of composite resin in posterior teeth and reviews the literature to discuss briefly many of the controversial aspects of the techni

ISSN:0045-0421    

DOI:10.1111/j.1834-7819.1992.tb00737.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

AbstractAcid‐etching and bonding of composite resin to bevelled enamel margins has been reported to produce a reliable seal. However, achieving a seal with dentine and cementum margins is more difficult. Four different dentine bonding systems were used in combination with Silux composite resin to restore cervical cavitiesin vitro.None of the bonding systems used completely sealed either the occlusal or gingival margins. Of the four systems, GLUMA provided the best seal at both the occlusal and gingival margin

ISSN:0045-0421    

DOI:10.1111/j.1834-7819.1992.tb00738.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

AbstractThe objective of this project was to determine the effectiveness of a dentine bonding agent, in conjunction with a composite resin, to act as an endodontic sealing material. The effectiveness was compared with that provided by a conventional sealer (AH26) by measuring dye penetration into the root canal. Two obturation techniques were used with each sealer; the single gutta‐percha point technique, and lateral condensation with multiple gutta‐percha points.Lateral condensation with the conventional sealer was found to be the superior procedure, by producing the least amount of linear leakage (coronally from the apex) on average. However, the single point technique with the composite resin/dentine bonding agent sealer provided the greatest number of ‘no leakage’ samples. Scanning electron microscope investigation of obturated roots revealed the presence of resin tags in dentine tubules only in those samples where the composite resin/dentine bonding agent sealer was used. The short working time provided by the composite resin/dentine bonding agent sealer prevented successful obturation using lateral condensation. The provision of an extended working time composition for this sealer may produce more favourable results in obturation with lateral conde

ISSN:0045-0421    

DOI:10.1111/j.1834-7819.1992.tb00739.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

AbstractA case is reported of massive haemorrhage following severe maxillofacial trauma. The various procedures that were used to control the bleeding are discussed with particular reference to therapeutic arterial embolization.

ISSN:0045-0421    

DOI:10.1111/j.1834-7819.1992.tb00740.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

AbstractClinical records and radiographs of 90 patients with 113 anterior maxillary supernumerary teeth (mesiodens) have been evaluated. Although uncommon, mesiodentes are the most frequent supernumerary teeth and may disturb the eruption and/or position of the adjacent permanent incisors. Clinical and radiographic examination may disclose the number, direction and location of mesiodentes and their effects on neighbouring teeth. In the present study the majority of the supernumerary teeth lay palatal to the central incisors. Complete or partial eruption of a mesiodens was rare, hence the importance of radiographs to locate supernumerary teeth in the premaxilla.Pathological findings included the formation of dentigerous cysts in three patients and complete ossification of the pericoronal space with resorption of the crown of the mesiodentes in eight cases. Retention and malposition of the adjacent permanent incisors occurred in 39 and 24 cases, respectively.

ISSN:0045-0421    

DOI:10.1111/j.1834-7819.1992.tb00741.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

AbstractReplacement of restorations comprises a considerable portion of the work of most dentists. Consequently, factors that affect restoration longevity can influence the pattern of dental practice in a given community. Based on the results of research into treatment provision in the General Dental Service in Scotland, it was considered possible that factors such as the frequency with which patients were examined, and the frequency with which they changed dentists, might influence restoration longevity in other populations. Therefore, the present study was initiated to investigate the effects of these two factors in a population of 100 long‐term members of the Royal Australian Air Force. No statistically significant relationship could be found between examination frequency, or frequent changes in dental practitioner, and restoration longevity. It is proposed that the large differences found in restoration longevity between this study and the Scottish study upon which it was based, may be due in part to the differing modes of remuneration of the dentists in the two studie

ISSN:0045-0421    

DOI:10.1111/j.1834-7819.1992.tb00742.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

AbstractA sample of 1100 Royal Australian recruits were examined for dental caries in 1988. Socio‐demographic data were also collected. The mean DMFT scores were 4.33, 6.85, and 8.87 teeth for the 15–19 year‐olds, 20–24 year‐olds, and 25–29 year‐olds, respectively. Caries experience varied between the state of origin of recruitment with Victorian and Queensland subjects having the highest DMFT scores, and Tasmanian subjects, the lowest. Comparison with previous military studies indicated not only a decreased dental caries experience, but also that restoration of teeth rather than extraction is a more likely treatment outcome of dental caries in re

ISSN:0045-0421    

DOI:10.1111/j.1834-7819.1992.tb00743.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

AbstractIn this, the second of two papers on the relationships between dental treatment and dental health, the philosophical basis of Minimum Intervention Dentistry is presented. This approach to patient care has several distinct treatment modalities. These range from preventive measures and fissure sealants, through monitoring carious lesions for active progression or arrest, to minimal cavity designs such as tunnel preparations and preventive resin restorations which employ adhesive dental restorative materials. This paper discusses these techniques and the implications of this change in philosophy for dental teaching, research and manpower considerations.

ISSN:0045-0421    

DOI:10.1111/j.1834-7819.1992.tb00744.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

AbstractA postal questionnaire survey was conducted in April‐May 1990 among 1223 Hong Kong Chinese dentists resident in Hong Kong to ascertain their plans for emigration from the Territory, as there were no data on emigration trends among dentists. A response rate of 47 per cent was obtained. Only 7 per cent of respondents definitely did not plan to emigrate and 47 per cent planned definitely or hopefully to emigrate, mostly in the years prior to 1997. Canada, Australia and the United States of America were the destinations most commonly cited by those planning to emigrate, and only one‐quarter of these have any plans to return to Hong Kong. It was concluded that the emigration and return of Hong Kong dentists would influence workforce planning in the territory, and thus should be monito

ISSN:0045-0421    

DOI:10.1111/j.1834-7819.1992.tb00745.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

AbstractA follow‐up survey of the 1988 graduating class was carried out in order to compare views of the same cohort after 12 months of dental practice. The most significant finding was that there were few changes in opinion in respect to those subjects where 60 per cent or more respondents in the 1988 survey had judged the practical and/or theoretical components to have too little emphasis. These included fixed prosthodontics, occlusion, orthodontics, endodontics, aesthetic dentistry, oral surgery, conservative dentistry and care of the special patient. Recent changes to the undergraduate curriculum were highlighted and the need for further development in continuing education courses was re‐emphasi

ISSN:0045-0421    

DOI:10.1111/j.1834-7819.1992.tb00746.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY