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      Repair of an Extensive Furcation Perforation with CEM Cement: A Case Study.

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          Abstract

          Iatrogenic perforation of the furcation area in multi-rooted molars during preparation of the access cavity can potentially lead to tooth extraction. The present case report describes the nonsurgical endodontic management of an extensive pulp chamber floor perforation in a first mandibular molar with calcium enriched mixture (CEM) cement. The perforation was chemically cleaned and then physically sealed with CEM cement. Root canal therapy was completed and the tooth was then restored with amalgam. A one-year follow-up revealed the absence of symptoms of infection/inflammation as well as clinical and radiographic signs/symptoms and therefore, can be interpreted as a favorable treatment outcome.

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          Most cited references26

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          Antibacterial effects of five different root canal sealing materials.

          The aim of this in vitro study was to assess the antibacterial effects of gray and white mineral trioxide aggregate (GMTA and WMTA), calcium hydroxide (CH), Portland cement (PC) and a new endodontic cement (NEC) on various species of microorganisms, using agar diffusion test. A base layer of Petri plates was made using Muller-Hinton agar. Five cavities were made in agar and filled with fresh mixed materials after 24 h. Pseudomonas aeruginosa, Enterococcus faecalis, Staphylococcus aureus, Escherichia coli and a mixture of these bacteria were seeded by pour plate. The plates were preincubated for 2 h at room temperature followed by incubation at 37 degrees C. The inhibition zone diameters were measured at 24, 48 and 72 h. The highest mean diameters of growth inhibition zones were observed around NEC and CH. According to one-way ANOVA, there was a significant difference among test groups (P < 0.001), while post-hoc test revealed no significant difference between the mean zone diameters of NEC and CH, and also between MTAs and PC. However, there was a significant difference between CH and NEC in comparison with MTAs and PC groups (P < 0.001). It appears that NEC may act as a potent antibacterial agent similar to CH.
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            Periradicular regeneration after endodontic surgery with calcium-enriched mixture cement in dogs.

            The aim of this in vivo study was to compare the response of periradicular tissues to mineral trioxide aggregate (MTA) and calcium-enriched mixture (CEM) cement as root-end fillings and to analyze hard tissue healing after periradicular surgery. Intentional periradicular lesions were induced in 32 premolar teeth in 4 beagle dogs. The root canals were prepared, dried, and obturated with laterally condensed gutta-percha with sealer, and the coronal access cavities were filled with amalgam. After surgical exposure of the apices, 2-3 mm of the apical root was resected, and root-end cavities were ultrasonically prepared. The root-end cavities were randomly filled with MTA or CEM cement. After 2 months, the animals were killed; tissue blocks were removed and prepared for histologic examination. Hard tissue healing including cementum and new bone formation in addition to concentration and extent of inflammation were evaluated. Eight samples were excluded. The major finding was the cementum deposition adjacent to MTA in 11 of 12 samples and CEM cement in 10 of 12 samples. With one-way analysis of variance, no significant difference was observed between the periradicular tissue response to tested materials. CEM cement and MTA were associated with regenerative periapical tissue response when used as root-end filling biomaterials. Copyright (c) 2010 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.
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              Root perforations: classification and treatment choices based on prognostic factors.

              M Trope, Z Fuss (1996)
              Root perforations are common complications of endodontic treatment or post preparation and often lead to tooth extraction. Successful treatment depends mainly on immediate sealing of the perforation and prevention of infection. Several factors affect the achievement of these goals, most important of which are: time of occurrence, size, and location of the perforation. A classification of root perforations, based on the above factors, is presented to assist the clinician in the choice of the treatment protocol which will give the best possible results when a perforation is diagnosed.
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                Author and article information

                Journal
                Iran Endod J
                Iranian endodontic journal
                1735-7497
                1735-7497
                2014
                : 9
                : 1
                Affiliations
                [1 ] Dental Research Center, Research Institute of Dental sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran;
                [2 ] Iranian Center for Endodontic Research, Research Institute of Dental sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
                Article
                3881307
                24396381
                67a3e9f9-ca24-4c53-86ae-1ab8b39b93c4
                History

                Biocompatibility,CEM Cement; Dental Cements,Calcium Enriched Mixture,Endodontics,Furcation Perforation,Root Canal Therapy,Treatment Outcome

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