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Azerbaycan Saytlari

 »  Home  »  Endodontic Articles 12
Endodontic Articles 12

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» A scanning electron microscopic study of dentinal erosion by final irrigation with EDTA and NaOCl solutions
By JofER editor | Published 11/12/2008 | Endodontic Articles 12 | Unrated
W. Niu, T.Yoshioka, C. Kobayashi & H. Suda
Pulp Biology and Endodontics, Department of Restorative Sciences, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.

Aim.
The purpose of this in vitro study was to examine dentinal erosion caused by final irrigation with EDTA and NaOCl.

Conclusions.
Final irrigation with 6% NaOCl accelerates dentinal erosion following treatment with 15% EDTA.
» Clinical evaluation of the cleansing properties of the noninstrumental technique for cleaning root canals
By JofER editor | Published 11/11/2008 | Endodontic Articles 12 | Unrated
T. Attin, W. Buchalla, C. Zirkel & A. Lussi
Department of Operative Dentistry, Preventive Dentistry and Periodontology, Georg August University Gottingen, Gottingen, Germany.
Department of Operative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Berne, Berne, Switzerland.


Aim.
The purpose of the present study was to evaluate noninstrumentation technology (NIT) for root-canal cleansing in vivo.

Conclusions.
The results of the present investigation showed that further modifications of the NIT for cleaning root canals are necessary to achieve sufficient cleanliness of root canals in vivo and to be as effective as previously demonstrated under in vitro conditions.
» Quality of preparation of oval distal root canals in mandibular molars using nickel-titanium instruments
By JofER editor | Published 11/6/2008 | Endodontic Articles 12 | Unrated
T. Rodig, M. Hulsmann, M. Muhge & F. Schafers
Department of Operative Dentistry, Preventive Dentistry and Periodontology, University of Gottingen, Robert-Koch-Street 40, 37075 Gottingen, Germany

Aim.
The aim of this study was to compare the preparation of oval distal root canals in mandibular molars using three different nickel-titanium (NiTi) instruments: Lightspeed (Lightspeed Inc., San Antonio, TX, USA), ProFile .04 (Maillefer, Ballaigues, Switzerland) and Quantec SC (Tycom, Irvine, CA, USA).

Conclusions.
The flexibility of the NiTi instruments investigated in this study did not allow controlled preparation of the buccal and lingual extensions of oval root canals. The instruments frequently produced a circular bulge in the canal whilst the buccal and lingual extensions remained unprepared, leaving smear layer and debris.
» An in vitro investigation into the effects of retained coronal dentine on the strength of a tooth restored with a cemented post and partial core restoration
By JofER editor | Published 10/27/2008 | Endodontic Articles 12 | Unrated
A. Al-Wahadni & D. L. Gutteridge
Faculty of Dentistry, Jordan University of Science and Technology, Irbid, Jordan.
Division of Restorative Dentistry, Leeds Dental Institute, Leeds, UK .


Aim.
This study aimed to examine the fracture resistance of teeth restored with cast post and partial cores supported by different heights of coronal tooth structure.

Conclusions.
  1. In this in vitro study, retained coronal buccal dentine improved fracture resistance of teeth restored with partial post and cores when compared to teeth without retained buccal dentine.
  2. Teeth with retained buccal dentine of 3 mm had significantly higher resistance to fracture compared to control teeth with post and full cores, whereas longer lengths of retained buccal dentine did not produce statistically significant improvements.
  3. Crack formation and propagation were evident midway between buccal and lingual root margin and the junction of partial and dentine cores.
» Prevalence of dilaceration in Jordanian adults
By JofER editor | Published 10/27/2008 | Endodontic Articles 12 | Unrated
A. A. Hamasha,T. Al-Khateeb & A. Darwazeh
Departments of Preventive Dentistry and Oral Medicine and Oral Surgery, Faculty of Dentistry, Jordan University of Science and Technology, Irbid, Jordan.

Aim.
The purpose of this study was to determine the prevalence of dilaceration in a sample of Jordanian dental patients.

Conclusion.
Dilaceration is not common, but it is an important dental anomaly that affects all teeth. Recognizing the condition will facilitate endodontic, orthodontic and surgical treatment.


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