Journal of Endodontics Research

Inflammatory response to different endodontic irrigating solutions

muveqqeti@gmail.com (JofER editor) — Sat, 06 Sep 2008 00:00:00 -0500

M. Tanomaru Filho, M. R. Leonardo, L. A. B. Silva, F. F. Anibal & L. H. Faccioli.Department of Endodontics, School of Dentistry of Araraquara, University of the State of Sao Paulo, Araraquara, SP, Brazil.Department of Clinical Pediatrics, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil.School of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil.School of Pharmaceutical Science, University of Sao Paulo, Ribeirao Preto, SP, Brazil.Aim.The aim of this study was to evaluate the inflammatory response to irrigating solutions injected into the peritoneal cavity of mice. Conclusions. In this study, a 0.5% sodium hypochlorite solution caused irritating tissue reactions and showed higher inflammatory responses. Two percent chlorhexidine digluconate was biocompatible, suggesting that it can be an alternative or a complement to sodium hypochlorite during irrigation.

An in vitro evaluation of four materials as barriers to coronal microleakage in root-filled teeth

muveqqeti@gmail.com (JofER editor) — Fri, 05 Sep 2008 00:00:00 -0500

A. A. Zaia, R. Nakagawa, I. De Quadros, B. P. F. A. Gomes, C. C. R. Ferraz, F. B.Teixeira & F. J. Souza-Filho Department of Restorative Dentistry, Dental School of Piracicaba, Piracicaba, Sao Paulo, Brazil. Aim.To assess the ability of IRM, Coltosol, Vidrion R and Scotch Bond to seal the pulp chamber following root-canal treatment. Conclusions.None of the materials were able to prevent microleakage in all specimens. Vidrion R and Scotch Bond demonstrated the poorest results when used as barriers to coronal microleakage, whilst IRM and Coltosol were significantly better in preventing microleakage.

Invivo fracture of anewrubber-dam clamp

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

S. Zinelis & J. MargelosBiomaterials Laboratory, School of Dentistry, University of Athens, Athens, Greece.Aim.This study was carried out to investigate the reasons for fracture of a new rubberdam clamp used for the first time.Key learning points.The labelling technique used to number clamps maybe implicated with catastrophic failure.Dentists should be aware that even new clamps can fracture.It is important that clamps are secured to prevent inhalation of metal fragments, should catastrophic failure occur.

Prevalence of different periapical lesions associated with human teeth and their correlation with the presence and extension of apical external root resorption

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

F.V.Vier & J. A. P. Figueiredo Post-Graduate Programof Dentistry, ULBRA, Canoas, Brazil.Aim.The aim of this study was to determine the prevalence of various periapical pathologies and their association with the presence and extent of apical external inflammatory root resorption in human teeth. Conclusions.On the basis of our study of extracted human teeth, we conclude that: Cystic lesions accounted for 24.5% of chronic periapical lesions; The majority of chronic periapical lesions (84.3%), whether cystic (20.6%) or noncystic (63.7%), had large collections of acute inflammatory cells; Periforaminal and foraminal resorptions were present in 87.3 and 83.2% of roots associated with periapical lesions; The pattern of periforaminal resorption was independent of the pattern of foraminal resorption; There was no correlation between the histopathological diagnosis of the periapical lesion and the presence and extension of apical external root resorption.

Diagnosing periapical lesions - disagreement and borderline cases

muveqqeti@gmail.com (JofER editor) — Sat, 24 Aug 2002 00:00:00 -0500

A. Halse, O. Molven & I. FristadSection of Oral Radiology and Section of Endodontics, School of Dentistry, University of Bergen, Bergen, Norway. Aim.The aim of this paper is to present a selection of disagreement and borderline cases from a methodological study on the radiographic diagnosis of periapical disease. Conclusion.This presentation of difficult borderline cases illustrates the uncertainty frequently involved in radiographical decision making. In such cases, the decision: lesion or no lesion can only be made after careful analysis of the periodontal ligament space, the lamina dura, the trabecular pattern and the bone marrow spaces.

Combinations of bacterial species in endodontic infections

muveqqeti@gmail.com (JofER editor) — Wed, 21 Aug 2002 00:00:00 -0500

L.B. Peters, P.R. Wesselink & A.J. van WinkelhoffDepartment of Cariology Endodontology Pedodontology and Department of Oral Microbiology, Academic Center for Dentistry Amsterdam, Amsterdam, the Netherlands.Aim.This study was undertaken to investigate combinations of bacteria found in root-canal infections of teeth with periapical bone destruction without clinical signs and symptoms. Conclusions.These results indicate that endodontic pathogens do not occur at random but are found in specific combinations. These combinations may contribute to the development of clinical signs and symptoms.

Periapical status, prevalence and quality of endodontic treatment in an adult French population

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

L. Lupi-Pegurier, M.-F. Bertrand, M. Muller-Bolla, J. P. Rocca & M. BollaDepartment of Public Health, Department of Conservative Dentistry and Endodontics, and Department of Biomaterials, Laboratory of Dental Biomaterials and Experimental Odontology, University of Nice, Sophia, Antipolis, France.Aim.The aim of this study was to determine the periapical status and the quality of root-canal treatment amongst an adult population attending the dental school in Nice, France during 1998. Conclusions.Within the constraints of this study, the results demonstrated that adequate root fillings (no voids, obturation within 2 mm of the radiographic apex) was associated with fewer periapical lesions. Adequate root fillings were observed in only 32% of root-filled teeth.

Periapical health related to the quality of coronal restorations and root fillings

muveqqeti@gmail.com (JofER editor) — Sun, 11 Aug 2002 00:00:00 -0500

G. M. G. Hommez, C. R. M. Coppens & R. J. G. De Moor Department of Operative Dentistry and Endodontology, Ghent University, Dental School, Ghent University Hospital, Ghent, Belgium.Aim.To evaluate the impact of the quality of coronal restorations scored on a clinical and radiographic basis and the quality of root fillings on periapical health. Conclusion.The results of this study indicate that a well-sealing coronal restoration and a well-performed root-canal treatment are both important for the overall success of rootcanal treatment. For the assessment of coronal leakage as related to apical periodontitis, radiographic evaluation of the coronal restorations is of greater importance than the quality scored only on a clinical basis. Data suggested that the problem of coronal leakage may not be of such clinical impact as indicated by previous studies, provided endodontic treatment procedures are carefully carried out. In addition, it is clear that the use of a base under restorations is beneficial in reducing apical periodontitis.

Comparative in-vitro evaluation of three chelator pastes

muveqqeti@gmail.com (JofER editor) — Wed, 07 Aug 2002 00:00:00 -0500

M. Hulsmann, M. Heckendorff & F. Schafers Department of Operative Dentistry, Preventive Dentistry and Periodontology, University of Gottingen, Gottingen, Germany. Aim.To compare the effect of three paste chelating agents on the root dentine of extracted teeth: Calcinase-Slide (lege artis, Dettenhausen, Germany), Glyde-File (DeTrey/Dentsply, Konstanz, Germany), RCPrep (Premier, Norristown, USA). Conclusions.The use of chelating pastes during root-canal preparation resulted in a measurable time-dependent weight loss and decrease of dentine microhardness. The use of chelator pastes under the conditions of the present study resulted in an improved cleanliness of the root-canal walls in the coronal and middle parts of the root canal.

Periapical healing of endodontically treated teeth in one and two visits obturated in the presence or absence of detectable microorganisms

muveqqeti@gmail.com (JofER editor) — Mon, 05 Aug 2002 00:00:00 -0500

L. B. Peters & P. R.Wesselink Department of Cardiology Endodontology Pedodontology, Amsterdam Academic Centre for Dentistry, Amsterdam, Netherlands.Aim.The purpose of the present study is to evaluate the healing of periapical lesions of teeth with positive and negative canal cultures at the time of obturation, and to evaluate the periapical healing of teeth treated in one visit (without) or in two visits with an inter appointment dressing of calcium hydroxide. Conclusions.Within the limitations of this study, using teeth with a relatively simple anatomy, no significant differences in healing results occurred when small numbers of bacteria (CFU <102) could be cultured or not cultured at obturation. There was no significant difference in healing after root-canal treatment in one and two visits (with interappointment calcium hydroxide dressing). In order toquantitate the effects of treatment on healing in a similar prospective study, a very large group size is needed for definite conclusions.