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Mesial Canals (mesial + canal)
Selected AbstractsInvestigation of the root canal configuration of mandibular first molars in a Taiwan Chinese populationINTERNATIONAL ENDODONTIC JOURNAL, Issue 11 2009G. Chen Abstract Aim, To investigate the root form and canal morphology of mandibular first molar teeth in a Taiwan Chinese population. Methodology, A total of 183 mandibular first molars were collected and examined visually through a dissecting microscope after rendering the teeth transparent. The number of roots, number of canals and canal configuration were recorded. The root canal morphology was categorized and compared according to Vertucci (1984). Results, Overall 46% of the mandibular first molars had four canals and 20% had extra-distal roots (distolingual root). In addition, 97% of the specimens had two mesial canals and 46% had two distal canals. In total, 68% of teeth with two mesial canals had two separated apical foramina, and 33% of teeth with two distal canals had two apical foramina. The most common canal configurations (Vertucci, 1984) of mesial roots were type 4 (46%) and type 2 (23%). Type 1 was encountered in 54% of the distal roots. Conclusions, The frequency of the extra-distal root on the mandibular first molar was 20%, and the incidence of three canals (Vertucci's type 8 classification) with separate apical foramina at the apex of the mesial root was 6%. The three-rooted variation of the mandibular first molar appears to be a genetic characteristic of an Asiatic racial background. [source] Cleaning efficacy of two apical preparation regimens following shaping with hand files of greater taperINTERNATIONAL ENDODONTIC JOURNAL, Issue 3 2000P. J. Lumley Abstract Aim The aim of this investigation was to assess canal cleaning following shaping with hand files of greater taper. Methodology Thirty mesial canals and 30 distal canals in mandibular molars were prepared with .08 and .10 hand files of greater taper, respectively. Following initial preparation, 0.02 instruments were used incrementally shorter in a stepback manner. In half the canals instrumentation was performed to size 35 1 mm short of the canal terminus. In the other half the series was continued through to size 60 using stepback increments of half to one millimetre as appropriate (foramen size was maintained at size 20 in all groups). Sodium hypochlorite (4.5%) and REDTA (17%) were used as irrigants for all groups. Cleaning efficacy was evaluated by scoring the amount of remaining debris using a light microscope (×50) and calibrated eyepiece micrometer (range 0,3). Results Canals stepped back through to a size 60 were significantly cleaner than those instrumented to a size 35 only (Mann,Whitney P < 0.05). Conclusion Refining the apical region of canal preparation by stepping back through to a size 60 reduced remaining debris following shaping with files of greater taper. [source] Endodontic treatment of a mandibular first molar with three mesial canals and broken instrument removalAUSTRALIAN ENDODONTIC JOURNAL, Issue 2 2010Article first published online: 27 JUL 2010 No abstract is available for this article. [source] Endodontic treatment of a mandibular first molar with three mesial canals and broken instrument removalAUSTRALIAN ENDODONTIC JOURNAL, Issue 1 2010Farhad Faramarzi dds Abstract To succeed in any dental procedure, the clinician's awareness of the patient's dental anatomy and its variations is crucial. In endodontic therapy, obtaining full information about the root canals' variations can affect the outcome substantially. This case report presents the endodontic treatment of a mandibular first molar exhibiting three mesial root canals with 4 mm of a separated K-file in the coronal third of the mesiolingual canal on an 18-year-old female patient. This case demonstrates the importance of locating additional canals in any roots undergoing endodontic treatment and how the clinician's awareness of aberrant internal anatomy may change the treatment results. [source] | ||||||||||