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Azerbaycan Saytlari

 »  Home  »  Endodontic Articles 10
Endodontic Articles 10

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» Is pulpitis painful?
By JofER editor | Published 09/25/2008 | Endodontic Articles 10 | Unrated
P. L. Michaelson & G. R. Holland
Division of Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA

Aim.
To determine whether inflamed dental pulps progress to necrosis without pain.

Conclusions.
Many teeth appear to progress to pulpal necrosis without the patient experiencing pain attributable to the pulp.
» Smooth flexible versus active tapered shaft design using NiTi rotary instruments
By JofER editor | Published 09/24/2008 | Endodontic Articles 10 | Unrated
L. Bergmans, J.Van Cleynenbreugel, M. Beullens, M.Wevers, B.VanMeerbeek & P. Lambrechts
Departments of Conservative Dentistry, Leuven BIOMAT Research Cluster,
Radiology and Electrical Engineering, ESAT,
Informatics and Telematics, LUDIT,
Metallurgy and Materials Engineering, MTM, Catholic University of Leuven, Belgium.


Aim.
The aim of this study was to evaluate the influence of a smooth flexible versus active tapered shaft design on canal preparation by NiTi rotary techniques.

Conclusions.
In conclusion, under the conditions of this study, the smooth flexible (Lightspeed) as well as the active tapered (GT-rotary) shaft design was capable of preparing canals with good morphological characteristics in curved canals. Further studies are required to focus on other criteria for canal preparation such as efficiency, debris removal, resistance to deformation and/or fracture, time requirements and production costs.
» Patients attitudes to rubber dam
By JofER editor | Published 09/23/2008 | Endodontic Articles 10 | Unrated

D. A. Stewardson & E. S. McHugh.
Conservative Dentistry, School of Dentistry, University of Birmingham, Birmingham, UK.
Department of Statistics, University of Glasgow, Glasgow, UK.

Aim.
The aims of this study were to record patients views of their experience of RD use in an objective manner, and to evaluate the influence of some personal and clinical factors on patients’ opinion. 

Conclusions.
Further evidence is presented that:

  • Patients generally are not averse to RD.
  • Placement of rubber dam does not take long.
  • Operator experience improves patient compliance.
» Effect of IL-1ra on human dental pulp cells and pulpal inflammation
By JofER editor | Published 09/22/2008 | Endodontic Articles 10 | Unrated
H-X. Lu, M-Z. Xiao, Z-Y. Niu, X-M. Guo, S-L. Zhao, H-G.Wang & H-Y. Guo
Department of Endodontics, College of Stomatology, Fourth Military Medical University, Xian, China.

Aim.
This study was conducted to investigate the effect of interleukin-1 receptor antagonist (IL-1ra) on the LPS-induced interleukin-1b (IL-1b) synthesis in human dental pulp cells and to assess the role of IL- 1ra in pulpal inflammation.

Conclusions.
In conclusion, this study provides in vitro evidence that IL-1ra could inhibit IL-1b synthesis induced by FnLPS and implies that IL-1ra is a likely contributing molecular factor in the blockade of inflammation.
» Clinical and macroscopic study of maxillary molars with two palatal roots
By JofER editor | Published 09/22/2008 | Endodontic Articles 10 | Unrated
F. Baratto-Filho, L. F. Fariniuk, E. L. Ferreira, J. D. Pecora, A. M. Cruz-Filho & M. D. Sous a-Neto.
Faculty of Dentistry, University of Ribeirao Preto, Ribeirao Preto, Brazil.
Pontifıcia Universidade Catolica do Parana, Parana, Brazil.
Faculty of Dentistry, University of Sao Paulo, Ribeirao Preto, Brazil.


Aim.
To report an anatomical variation in maxillary first molars.  

Key learning points:
  •  Clinicians should be aware of uncommon anatomical variations in maxillary molars.
  • The majority of maxillary first molars have three roots and four canals.
  • Maxillary molars may have two canals in the palatal root.


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