Journal of Endodontics Research

A laboratory study of the effect of calcium hydroxide mixed with iodine or electrophoretically activated copper on bacterial viability in dentinal tubules

muveqqeti@gmail.com (JofER editor) — Sat, 08 Jun 2002 00:00:00 -0500

Z. Fuss, A.Mizrahi, S. Lin, O. Cherniak & E. I.WeissDepartment of Endodontology and Department of Restorative Dentistry, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel.Department of Prosthodontics, Faculty of Dental Medicine, Hebrew University, Jerusalem, Israel. Aim.The aim of this laboratory study was to evaluate the ability of calcium hydroxide (CH), CH/iodine-potassium iodide (IKI) and electrophoretically activated copper to kill bacteria in dentinal tubules. Conclusions.The present study demonstrated that the addition of IKI or electrically activated copper to CH significantly (P < 0.001) increased its antibacterial activity and their penetration into the dentinal tubules in vitro. Further studies are necessary to identify more effective nontoxic antibacterial agents and delivery systems that ensure direct contact of the medicament with bacteria in the dentinal tubules.

Efficiency of rotary nickel-titanium FlexMaster instruments compared with stainless steel hand K-Flexofile - PART 2

muveqqeti@gmail.com (JofER editor) — Thu, 06 Jun 2002 00:00:00 -0500

E. Schafer & D. Lohmann Department of Operative Dentistry, University of Munster, Munster, Germany. Aim.To determine the cleaning effectiveness and the shaping ability of FlexMaster nickel-titanium rotary instruments and stainless steel hand K-FlexoÐ°Ñles during the preparation of curved root canals in extracted human teeth. Conclusions.With in the parameters of this study, manual instrumentation using K-Flexofiles resulted in better canal cleaningthan with rotary nickel-titanium FlexMaster instruments. FlexMaster instruments maintained the original curvature significantly better.

Efficiency of rotary nickel-titanium FlexMaster instruments compared with stainless steel hand K-Flexofile - PART 1

muveqqeti@gmail.com (JofER editor) — Tue, 04 Jun 2002 00:00:00 -0500

E. Schafer & D. Lohmann Department of Operative Dentistry, University of Munster, Munster, Germany. Aim.The purpose of this study was to compare the shaping ability of FlexMaster rotary nickel-titanium instruments with stainless steel hand K-Flexoï¿ files. This part of the two-part report describes the efficiency of these two instruments in simulated curved root canals. Conclusions.Inconclusion, with in the limitations of the present study, the FlexMaster instruments prepared curved canals rapidly, without substantial change in working length, only with few canal aberrations and minimal transportation towards the outer aspect of the curve. Nevertheless, further studies will be needed to evaluate three-dimensional analysis of the prepared canal in order to assess smoothness, ï¿¡flow characteristics and taper of the enlarged canals.

C-shaped root canals in mandibular second molars in a Saudi Arabian population

muveqqeti@gmail.com (JofER editor) — Sat, 01 Jun 2002 00:00:00 -0500

K. S. Al-Fouzan Dental Department, King Fahad National Guard Hospital, Riyadh, Kingdomof Saudi Arabia. Aim.The aim of this study was to determine the frequency of C-shaped canals in mandibular second molars in a population in Saudi Arabia and to establish a classiï¿ cation for the most common conï¿ gurations. Conclusions.Mandibular second molars with C-shaped canals vary in canal conï¿ guration. The early recognition of these conï¿ gurations facilitates cleaning, shaping, and obturation of the root-canal system. The possibility of CShaped canals has to be considered during the clinical and radiographic examination of the patient.

A six-canal maxillary first molar

muveqqeti@gmail.com (JofER editor) — Thu, 30 May 2002 00:00:00 -0500

F. Maggiore,Y. T. Jou & S. Kim Department of Endodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, USA. Aim.The aim of this case report is to describe an unusual six-canal maxillary first molar tooth. Key learning points. It should be assumed that all molar teeth have more than the traditionally expected three canals. The location of root canals should be identified at high magnification under the microscope. Careful radiographic re-examination of the fillings should be done in order to identify possibly missed canals.

Radiographic evaluation of cases referred for surgical endodontics

muveqqeti@gmail.com (JofER editor) — Mon, 27 May 2002 00:00:00 -0500

H. Doornbusch, L. Broersma, G. Boering & P. R.WesselinkDepartment of Oral and Maxillo-facial Surgery and Department of Economics, University of Groningen, Groningen, the Netherlands.Department of Cariology Endodontology Pedodontology, Academic Centre for DentistryAmsterdam (ACTA), Amsterdam, the Netherlands. AimThe aim of this study is to test the hypothesis that more patients with failed root-canal treatment or other endodontic problems are referred for periradicular surgery rather than nonsurgical re-treatment. Conclusions. Under the conditions of this retrospective study, far more cases were referred for surgical re-treatment than was considered strictly necessary from a technical point of view. Signiï¿ cant interobserver di!erences occurred when judging teeth amenable to conventional re-treatment between the oral surgeon and both the endodontist and general practitioner. More cases were considered amenable to conventional re-treatment from the patients referred to an oral surgery department in the northern part of the country than in the western part.

Stainless steel bands in endodontics: effects on cuspal flexure and fracture resistance

muveqqeti@gmail.com (JofER editor) — Thu, 23 May 2002 00:00:00 -0500

E. S. Pane, J. E. A. Palamara & H. H. Messer School of Dental Science, University of Melbourne, Melbourne, Australia. Aims.This study investigated the effect of stainless steel bands on cuspal flexure and fracture resistance of extracted maxillary premolars. Conclusions.The study showed that stainless steel bands used in endodontics reduce the cuspal flexure of maxillary premolars and increase their fracture resistance.

Incompletely fractured teeth associated with diffuse longstanding orofacial pain: diagnosis and treatment outcome

muveqqeti@gmail.com (JofER editor) — Sun, 19 May 2002 00:00:00 -0500

A. Brynjulfsen, I. Fristad, T. Grevstad & I. Hals-KvinnslandDepartment of Odontology - Endodontics, School of Dentistry, University of Bergen, Bergen, Norway.Department of Anatomy and Cell Biology, Medical Faculty, University of Bergen, Bergen, Norway. Aim.To evaluate the diagnostic value of different clinical findings, and analyse the symptoms experienced from teeth with incomplete dentinal fractures in patients with diffuse orofacial pain. Secondly, to present the outcome of different treatment modalities in these patients. Conclusion.This study shows that the diagnosis of the incompletely fractured teeth in patients with longstanding diffuse orofacial pain symptoms are time consuming and represent a diagnostic problem. With appropriate endodontic and/or restorative treatment, symptoms were relieved in the majority of cases.

Papilla base incision: a new approach to recession-free healing of the interdental papilla after endodontic surgery

muveqqeti@gmail.com (JofER editor) — Sat, 18 May 2002 00:00:00 -0500

P. Velvart Clinic for Periodontology, Endodontology and Cariology, University of Basel, Switzerland. Aim.The purpose of the present study was to describe and evaluate a new incision technique: the papilla base incision. Conclusions.In patients with healthy marginal periodontal conditions the papilla base incision allows rapid and predictable recession-free healing following marginal surgical exposure of the soft tissues. One month postoperatively the majority of the incisions were completely or partially invisible. Long-term healing will be studied.

Electronic determination of root canal length in primary teeth with and without root resorption

muveqqeti@gmail.com (JofER editor) — Thu, 16 May 2002 00:00:00 -0500

J. Mente, J. Seidel, W. Buchalla & M. J. KochPoliklinik fÃ¼r Zahnerhaltungskunde, Ruprecht-Karls-University, Heidelberg, Germany.Indiana University School of Dentistry, Oral Health Research Institute, Indianapolis, Indiana, USA. Aim.To test an electrical device for determining root canal length in primary teeth in vitro, and to compare it with the radiographic length measurement. Conclusion.The presence of resorption in primary teeth did not affect the accuracy of electrical measurement of root canal length in vitro. The application of this method in primary teeth should be evaluated further.