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Azerbaycan Saytlari

 »  Home  »  Endodontic Articles 9
Endodontic Articles 9

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» Invivo fracture of anewrubber-dam clamp
By JofER editor | Published 08/30/2002 | Endodontic Articles 9 | Unrated
S. Zinelis & J. Margelos
Biomaterials Laboratory, School of Dentistry, University of Athens, Athens, Greece.

This study was carried out to investigate the reasons for fracture of a new rubberdam clamp used for the first time.

Key learning points.
  • The labelling technique used to number clamps maybe implicated with catastrophic failure.
  • Dentists should be aware that even new clamps can fracture.
  • It is important that clamps are secured to prevent inhalation of metal fragments, should catastrophic failure occur.
» Prevalence of different periapical lesions associated with human teeth and their correlation with the presence and extension of apical external root resorption
By JofER editor | Published 08/27/2002 | Endodontic Articles 9 | Unrated
F.V.Vier & J. A. P. Figueiredo
Post-Graduate Programof Dentistry, ULBRA, Canoas, Brazil.

The aim of this study was to determine the prevalence of various periapical pathologies and their association with the presence and extent of apical external inflammatory root resorption in human teeth.

On the basis of our study of extracted human teeth, we conclude that:
  • Cystic lesions accounted for 24.5% of chronic periapical lesions;
  • The majority of chronic periapical lesions (84.3%), whether cystic (20.6%) or noncystic (63.7%), had large collections of acute inflammatory cells;
  • Periforaminal and foraminal resorptions were present in 87.3 and 83.2% of roots associated with periapical lesions;
  • The pattern of periforaminal resorption was independent of the pattern of foraminal resorption;
  • There was no correlation between the histopathological diagnosis of the periapical lesion and the presence and extension of apical external root resorption.
» Diagnosing periapical lesions - disagreement and borderline cases
By JofER editor | Published 08/24/2002 | Endodontic Articles 9 | Unrated
A. Halse, O. Molven & I. Fristad
Section of Oral Radiology and Section of Endodontics, School of Dentistry, University of Bergen, Bergen, Norway.

The aim of this paper is to present a selection of disagreement and borderline cases from a methodological study on the radiographic diagnosis of periapical disease.

This presentation of difficult borderline cases illustrates the uncertainty frequently involved in radiographical decision making. In such cases, the decision: lesion or no lesion can only be made after careful analysis of the periodontal ligament space, the lamina dura, the trabecular pattern and the bone marrow spaces.
» Combinations of bacterial species in endodontic infections
By JofER editor | Published 08/21/2002 | Endodontic Articles 9 | Unrated
L.B. Peters, P.R. Wesselink & A.J. van Winkelhoff
Department of Cariology Endodontology Pedodontology and Department of Oral Microbiology, Academic Center for Dentistry Amsterdam, Amsterdam, the Netherlands.

This study was undertaken to investigate combinations of bacteria found in root-canal infections of teeth with periapical bone destruction without clinical signs and symptoms.

These results indicate that endodontic pathogens do not occur at random but are found in specific combinations. These combinations may contribute to the development of clinical signs and symptoms.
» Periapical status, prevalence and quality of endodontic treatment in an adult French population
By JofER editor | Published 08/16/2002 | Endodontic Articles 9 | Unrated
L. Lupi-Pegurier, M.-F. Bertrand, M. Muller-Bolla, J. P. Rocca & M. Bolla
Department of Public Health, Department of Conservative Dentistry and Endodontics, and Department of Biomaterials, Laboratory of Dental Biomaterials and Experimental Odontology, University of Nice, Sophia, Antipolis, France.

The aim of this study was to determine the periapical status and the quality of root-canal treatment amongst an adult population attending the dental school in Nice, France during 1998.

Within the constraints of this study, the results demonstrated that adequate root fillings (no voids, obturation within 2 mm of the radiographic apex) was associated with fewer periapical lesions. Adequate root fillings were observed in only 32% of root-filled teeth.

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