Abstract
<h2>Summary</h2> The results of this study indicate that: The vertical condensation technique, on radiographic examination, shows nearly double the number of lateral and accessory canals, compared with lateral condensation. When lateral canals are demonstrated in either technique, the apical third shows the greatest number, the middle third shows some, but the coronal third shows none. Lateral canals were shown four times in the bifurcations of the 50 maxillary first premolars; three times with vertical condensation; and once with lateral condensation. An analysis of radiographs made by a group of dentists showed that the vertical technique produced denser endodontic fillings than the lateral technique. There were no statistical difference in filling efficacy when the two techniques were compared histologically across all sections; however, the lateral condensation technique did fill the apical third slightly better than the vertical condensation; whereas, the vertical condensation technique filled the coronal third better than the lateral. In the middle third, they are of equal efficacy. Of the three sections of the root canal, the apical third is filled equally well by either technique.
Published Version
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