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Azerbaycan Saytlari

 »  Home  »  Endodontic Articles 8
Endodontic Articles 8

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» Periapical health related to the quality of coronal restorations and root fillings
By JofER editor | Published 08/11/2002 | Endodontic Articles 8 | Unrated
G. M. G. Hommez, C. R. M. Coppens & R. J. G. De Moor
Department of Operative Dentistry and Endodontology, Ghent University, Dental School, Ghent University Hospital, Ghent, Belgium.

Aim.
To evaluate the impact of the quality of coronal restorations scored on a clinical and radiographic basis and the quality of root fillings on periapical health.

Conclusion.
The results of this study indicate that a well-sealing coronal restoration and a well-performed root-canal treatment are both important for the overall success of rootcanal treatment. For the assessment of coronal leakage as related to apical periodontitis, radiographic evaluation of the coronal restorations is of greater importance than the quality scored only on a clinical basis. Data suggested that the problem of coronal leakage may not be of such clinical impact as indicated by previous studies, provided endodontic treatment procedures are carefully carried out. In addition, it is clear that the use of a base under restorations is beneficial in reducing apical periodontitis.
» Comparative in-vitro evaluation of three chelator pastes
By JofER editor | Published 08/7/2002 | Endodontic Articles 8 | Unrated
M. Hulsmann, M. Heckendorff & F. Schafers
Department of Operative Dentistry, Preventive Dentistry and Periodontology, University of Gottingen, Gottingen, Germany.

Aim.
To compare the effect of three paste chelating agents on the root dentine of extracted teeth: Calcinase-Slide (lege artis, Dettenhausen, Germany), Glyde-File (DeTrey/Dentsply, Konstanz, Germany), RCPrep (Premier, Norristown, USA).

Conclusions.
The use of chelating pastes during root-canal preparation resulted in a measurable time-dependent weight loss and decrease of dentine microhardness. The use of chelator pastes under the conditions of the present study resulted in an improved cleanliness of the root-canal walls in the coronal and middle parts of the root canal.
» Periapical healing of endodontically treated teeth in one and two visits obturated in the presence or absence of detectable microorganisms
By JofER editor | Published 08/5/2002 | Endodontic Articles 8 | Unrated
L. B. Peters & P. R.Wesselink
Department of Cardiology Endodontology Pedodontology, Amsterdam Academic Centre for Dentistry, Amsterdam, Netherlands.

Aim.
The purpose of the present study is to evaluate the healing of periapical lesions of teeth with positive and negative canal cultures at the time of obturation, and to evaluate the periapical healing of teeth treated in one visit (without) or in two visits with an inter appointment dressing of calcium hydroxide.

Conclusions.
Within the limitations of this study, using teeth with a relatively simple anatomy, no significant differences in healing results occurred when small numbers of bacteria (CFU <102) could be cultured or not cultured at obturation. There was no significant difference in healing after root-canal treatment in one and two visits (with interappointment calcium hydroxide dressing). In order toquantitate the effects of treatment on healing in a similar prospective study, a very large group size is needed for definite conclusions.
» Corrosion rates of stainless-steel files in different irrigating solutions
By JofER editor | Published 08/3/2002 | Endodontic Articles 8 | Unrated
M. Dartar Oztan, A. A. Akman, L. Zaimoglu & S. Bilgic
Department of Endodontics, Faculty of Dentistry, AnkaraUniversity.
Department of Physical Chemistry, Faculty of Science, Ankara University, Ankara,Turkey.


Aim.
The present study was designed to evaluate and compare the corrosion rates of the stainless-steel endodontic files when immersed in 0.2% chlorhexidine gluconate, 5.25% NaOCl, chlorinated soda with KOH, and 17% EDTA irrigating solutions.

Conclusions.
The findings of the present study indicated that the root canal irrigants 0.02% chlorhexidine gluconate, 5.25% NaOCl and chlorinated soda with KOH cause severe corrosion on the surface of stainless-steel files. Because corrosion decreases the cutting efficiency of endodontic files, irrigants should be rinsed from files as soon as possible after use and files should be replaced frequently.
» Efficiency of the 0.04 taper ProFile during the re-treatment of gutta-percha-filled root canals
By JofER editor | Published 08/1/2002 | Endodontic Articles 8 | Unrated
F. Baratto Filho, E. L. Ferreira & L. F. Fariniuk
Department of Endodontics, School of Dentistry, Pontificia Universidade Catolica of Parana, Curitiba, Parana, Brazil.

Aim.
The objective of this study was to determine the effectiveness of 0.04 ProFile instruments during the removal of root fillings.

Conclusions.
The 0.04 ProFile system partially removed filling materials from the root canal system allowing the working length to be achieved rapidly, with the advantage that no solvent was required. However, cleaning was not ideal and would require complementary manual instrumentation for total elimination of filling material.


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