title: [Anatomical and morphological peculiarities of maxillary first molars in the Georgian population].
abstract: Maxillary first molars due to the complexity of the root canal morphology are the object of constant interest. The present work investigates anatomical and morphological peculiarities of maxillary first molars in the Georgian population. A study on 440 maxillary first molars was conducted. The subjects were divided into three groups. The first group consisted of 156 extracted maxillary first molars (ex vivo study). The second group consisted of 243 endodontically treated teeth (in vivo study). The third - control group. Cone beam computed tomography (CBCT) was used to investigate 41 teeth. The investigation showed that inconsistencies exist in the results of ex vivo and in vivo studies. In vivo study showed less 4 canals, than ex vivo study. That's why for the credibility of the results we examined the results of ex vivo study. The results showed (ex-vivo study) that 70.5% of the examined teeth had high probability of 4 canals existence.  The occurrence of MB-2 canals of the maxillary first molar of Georgian population was in full accordance with the results of other authors.
mesh_terms: D016022:Case-Control Studies; D054893:Cone-Beam Computed Tomography; D005846:Georgia (Republic); D006801:Humans; D008437:Maxilla; D008963:Molar / Q000033:anatomy & histology*; D014081:Tooth Extraction