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Study of the Internal Anatomy of the Mandibular Incisor Teeth

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Author(s): K. Ashofteh Yazdi | A. Jafari

Journal: Journal of Dentistry of Tehran University of Medical Sciences
ISSN 2008-2185

Volume: 1;
Issue: 4;
Start page: 43;
Date: 2004;
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Keywords: Internal Anatomy | Mandibular Incisor Teeth | Teeth Morphology

ABSTRACT
Statement of Problem: Knowledge of internal anatomy of tooth plays an important role in a successful endodontics treatment. For a proper endodontic treatment, it is not only important to know the form of normal anatomy of tooth’s interior but one must also beacquainted with the possible diverse forms.Purpose: A thorough understanding of the internal anatomy of human mandibular incisors (central and lateral).Materials and Methods : A total of 205 central and lateral mandibular incisors that had healthy roots were selected and put in 10% formalin solution. After cleaning the samples with the help of brushes and other devices, they were kept in 5% sodium hypochloritesolution. Finally the roots were cleaned and the samples were prepared for next stages.Three methods were used, coloring (fushin1%, radiography (buccolingual and proximal sides), and cross-sectioning (cervical- middle-apical).Results: The result indicated that:- 88%of the teeth had a single canal and one apical foramen;- 8% of the teeth had a single canal and two apical foramena;- 3.5% of the teeth had two canals and one apical foramen;- 0.5% of the teeth had two canals and two apical foramena;Conclusion:A thorough understanding of the pulp morphology is essential for successful treatment of root canal. Therefore, a dentist should always be on the watch for the existence of two canals or a two-branched canal while working on the mandibular incisor teeth. it is essential to have the necessary precision in finding the second canal.
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