image could be analysed, altered and reconstructed by the computer. Various studies have been conducted
in order to analyse and observe the three dimensional view of the dentin- pulp complex in both anterior and posterior teeth with the help of computed tomography. Zoremchhingi et al conducted an in vitro study on root canal morphology of human primary molars using computed tomography and concluded that: It was not uncommon to find the distobuccal and palatal roots of the maxillary molars fused. When fusion of these roots occurred it does not mean that the canals are also fused
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The variations in root canal morphology, especially in multi- rooted teeth, are a constant challenge for diagnosis and successful endodontic therapy
The mesial root canals of the mandibular molars and the mesiobuccal root canals of the maxillary molars showed more frequent and greater variations than did the distal and distobuccal root canals of these molars teeth The primary root canal has a ribbon- shaped root canal system and the apical portion is less constricted without uniform tapering of the root canals. So, a root canal system with a graceful, tapering canal and a single apical foramen ending at the apical foramen is the exception rather than a rule Most of the variations within the root canals of the primary molars were observed in the buccolingual dimensions which would not be detected in clinical
radiographic examination The length of the roots are more variable in the maxillary molars but in the mandibular molars the distal root is invariably longer than the mesial root It is also not uncommon to have two well developed and separated mesial roots in the lower primary molars but this may be more prevalent in the second molar The mesial root diverge more than the distal root in the primary mandibular molars whereas in the maxillary primary molars the palatal root showed the greatest divergence. Similarly, Gopikrishna et al and
Ballal et al have also reported a case with a maxillary first molar with a
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