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Localisation of main and ancillary foramina within the mesial and distal roots of the first lower molars

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Author(s): Jovanović-Medojević Milica | Živković Slavoljub

Journal: Srpski Arhiv za Celokupno Lekarstvo
ISSN 0370-8179

Volume: 133;
Issue: 11-12;
Start page: 476;
Date: 2005;
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Keywords: first lower molar | main orifice | auxiliary orifice | location

ABSTRACT
Introduction. Understanding the morphology of the root canal system, and especially its apical third, represents the basic precondition for the successful treatment of diseased pulp and the apical endodontium. Aim. The aim of this study was to precisely locate the main and ancillary foramina in the mesial and distal first lower molars. Method. One hundred extracted first lower molars, originating from persons of both sexes and three different age groups, were used in the study. Results. The analysis of the sampled molars’ apical third was carried out using a binocular magnifier and a digital X-ray scanner (Trophy). The results showed that the main mesial and distal root foramina were located mostly on the distal surface. The ancillary mesial and distal root foramina were located at the lingual end, in most cases. Statistical analysis demonstrated the congruence of results achieved using the binocular magnifier and digital x-ray in 100% of cases if the main foramen is located on the very top of the mesial root (χ2 =17.23; p
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