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» Home » Endodontic Articles 15
 Endodontic Articles 15 |
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Efficiency of rotary nickel-titanium K3 instruments compared with stainless steel hand K-Flexofile. Part 2. Cleaning effectiveness and shaping ability in severely curved root canals of extracted teeth
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E. Schafer & R. Schlingemann
Department of Operative Dentistry, University of Munster, Munster, Germany.
Aim.
To determine the cleaning effectiveness and the shaping ability of K3 nickel-titanium rotary instruments and stainless steel hand K-Flexofiles during the preparation of curved root canals in extracted human teeth.
Conclusions.
Under the conditions of this study, K-Flexofiles allowed significantly better removal of debris than K3 instruments. K3 files maintained the original curvature significantly better. A number of K3 instruments fractured.
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Efficiency of rotary nickel-titanium K3 instruments compared with stainless steel hand K-Flexofile. Part 1. Shaping ability in simulated curved canals
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E. Schafer & H. Florek
Department of Operative Dentistry, University of Munster, Munster, Germany.
Aim.
To compare the shaping ability of K3 rotary nickel-titanium instruments with stainless steel K-Flexofiles manipulated by hand. Part 1 of this two-part report describes the efficiency of these two instruments in simulated curved root canals.
Conclusions.
K3 instruments prepared curved canals rapidly and with minimal transportation towards the outer aspect of the curve. Fractures occurred significantly more often with K3.
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Periapical endodontic surgery: a 3-year follow-up study
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M. Maddalone & M. Gagliani
Restorative & Endodontic Department, School of Dentistry, University of Milan, Milan, Italy.
Aim.
To monitor the outcome of periradicular surgery in a group of teeth treated with microsurgical technology and ultrasonic root-end preparation.
Conclusion.
Modern surgical endodontic procedures associated and EBA (Super Seal, Ogna Pharmaceuticals, Milan, Italy) root end fillings were successful over 3 years in 92.5% of cases.
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Periapical health and treatment quality assessment of root-filled teeth in two Canadian populations
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N. N. Dugas, H. P. Lawrence, P. E.Teplitsky, M. J. Pharoah & S. Friedman
Departments of Endodontics, Community Dentistry, Radiology, Faculty of Dentistry, University of Toronto,124 Edward Street, Toronto, Ontario, Canada.
Endodontics, College of Dentistry, University of Saskatchewan, 105 Wiggins Road, Saskatoon, Saskatchewan, Canada.
Aim.
The prevalence of apical periodontitis (AP) and the quality of root fillings and restorations were determined in two Canadian populations differing in availability of endodontists.
Conclusions.
The prevalence of AP in root-filled and untreated teeth was comparable to that reported in previous methodologically compatible studies. The quality of both the root filling and the restoration were found to impact on the periapical health of root-filled teeth, with the impact of the restoration being most critical when the quality of the root filling was adequate.
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Campylobacter gracilis and Campylobacter rectus in primary endodontic infections
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J.F. Siqueira Jr & I.N. Rocas
Department of Endodontics, Faculty of Dentistry, Estacio de Sa University, Rio de Janeiro, RJ, Brazil.
Laboratory of Oral Microbiology, Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
Aim.
A species-specific nested polymerase chain reaction (PCR) assay was used to investigate the occurrence of Campylobacter gracilis and C. rectus in primary root canal infections.
Conclusions.
Findings confirmed the assertion that both C. gracilis and C. rectus participate in infections of endodontic origin and suggest a pathogenetic role with regard to periradicular diseases.
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