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Azerbaycan Saytlari

 »  Home  »  Endodontic Articles 11
Endodontic Articles 11

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» Cytotoxicity of dentine-bonding agents on human pulp cells in vitro
By JofER editor | Published 10/24/2008 | Endodontic Articles 11 | Unrated
F.-M. Huang & Y.-C. Chang
Department of Prosthodontics, Chung Shan Medical University Hospital, Taichung, Taiwan.
School of Dentistry, College of Oral Medicine, Chung Shan Medical University, Taichung, Taiwan.


Aim.
To investigate the cytotoxicity of five different dentine-bonding agents on human pulp cells in vitro.

Conclusions.
The influence of the cytotoxicity depended on the materials tested. Dentine-bonding agents have significant potential for pulpal toxicity.
» Matrix metalloproteinase-8 (MMP-8) in pulpal and periapical inflammation and periapical root-canal exudates
By JofER editor | Published 10/24/2008 | Endodontic Articles 11 | Unrated
J.Wahlgren, T. Salo, O.Teronen, H. Luoto, T. Sorsa & L.Tjaderhane
Faculty of Medicine and Biomedicum, Oral Pathology Unit/Laboratory Diagnostics, Helsinki University Central Hospital (HUCH), University of Helsinki, Helsinki.
Institute of Dentistry, University of Oulu, Oulu University Hospital, Oulu, Medix Biochemica, Kauniainen, Finland.
Department of Endodontics, Faculty of Dentistry, University of Toronto, Toronto, Canada.


Aim.
To study the presence, levels and molecular forms of matrix metalloproteinase (MMP) -8 (collagenase- 2) in pulpal and periapical in£ammation, and the changes in MMP-8 levels in root-canal exudates during root-canal treatment.

Conclusions.
The findings demonstrate the presence of MMP-8 in the inflamed pulp and periapical tissue, indicating that MMP-8 has a role in pulpal and periapical inflammation, most likely participating in tissue extracellular matrix degradation. They further indicate that MMP analysis from periapical exudate could be used to indicate and monitor inflammatory activity and the
success of treatment in teeth with periapical lesions.
» Supplementary routes to local anaesthesia
By JofER editor | Published 10/20/2008 | Endodontic Articles 11 | Unrated
J. G. Meechan
The Dental School, University of Newcastle upon Tyne, Newcastle upon Tyne, UK.

This paper has described supplementary techniques available to provide pulpal anaesthesia. The methods described are useful when conventional techniques fail as all have been shown to increase the incidence of pulpal anaesthesia when used in combination with standard techniques. Knowledge of the various methods is useful as these techniques might be required to provide pain control for teeth that prove difficult to anaesthetize by the operator’s normal route.
» Densinvaginatus type III: report of a case and 10-year radiographic follow-up
By JofER editor | Published 10/18/2008 | Endodontic Articles 11 | Unrated
Goncalves, M. Goncalves, D. P. Oliveira & N. Goncalves
Department of Oral Diagnosis and Dentomaxillofacial Surgery, Division of Dentomaxillofacial Radiology, Araraquara Dental School–UNESP, Brazil.
Department of Endodontics and Department of Oral Diagnosis, Division of Dentomaxillofacial Radiology, Piracicaba Dental School–UNICAMP, Brazil.


Aim.
The purpose of this article is to report the 10-year follow-up of a right mandibular central incisor with ‘dens invaginatus’ that was root filled.

Key learning points.
  • Both clinical and radiographic examinations are necessary to determine morphological features of teeth before root-canal treatment.
  • Sensibility testing to determine the pulp condition is critical prior to treatment.
» Effect of sterilization on the cutting efficiency of PVD-coated nickel-titanium endodontic instruments
By JofER editor | Published 10/9/2008 | Endodontic Articles 11 | Unrated
E. Schafer
Department of Operative Dentistry, University of Munster, Munster, Germany.

Aim.
To investigate alterations in cutting efficiency when conventional and titanium nitride (TiN) coated nickel-titanium (NiTi) K-files were exposed to repeated sterilization using an autoclave.

Conclusions.
Within the limitation of this in vitro study, repeated cycles of sterilization under autoclave or exposure to NaOCl prior to repeated sterilization did not alter the cutting efficiency of TiN-coated NiTi instruments. On the contrary, sterilized uncoated files showed a significant loss of cutting efficiency in comparison with instruments that were not sterilized.


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