4.5 Article

Morphological changes of the root apex in anterior teeth with periapical periodontitis: an in-vivo study

Journal

BMC ORAL HEALTH
Volume 22, Issue 1, Pages -

Publisher

BMC
DOI: 10.1186/s12903-022-02062-z

Keywords

Periapical periodontitis; Anterior teeth; Cone-beam computed tomography; 3D reconstruction; Root apex morphology

Funding

  1. project of Jiangsu provincial Six Talent Peaks [WSW-086]

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This study analyzed the morphological changes of root apex in anterior teeth with periapical periodontitis. The results showed that anterior teeth with periapical periodontitis had shorter distances between apical constriction and anatomical apex, larger disparities between the diameters of buccolingual and mesiodistal, and a higher proportion of flaring apical constriction.
Introduction The aim was to analyze the morphological changes of root apex in anterior teeth with periapical periodontitis. Methods 32 untreated anterior teeth with periapical periodontitis were enrolled, compared with the healthy contralateral teeth. Two-dimensional measurement of Cone-beam computed tomography was used to determine the location and measure diameter of the apical constriction according to Schell's methods. An open-source software (3D Slicer) was used to reconstruct the teeth. The apical constriction form was analysis according to Schell's topography. The distances of apical constriction to apical foramen and anatomical apex were measured respectively. Results The difference value between buccolingual and mesiodistal diameter was (0.06 +/- 0.09) mm and (0.04 +/- 0.04) mm in periapical periodontitis and controls (p < 0.05). The mean distance between apical constriction and anatomical apex was significantly shorter in periapical periodontitis than controls, so was the mean distance of apical constriction to apical foramen. The most common form of apical constriction was flaring (65.6%) in periapical periodontitis. Conclusions The anterior teeth with periapical periodontitis had shorter distances of apical constriction to anatomical apex and apical foramen, bigger disparities between the diameters of buccolingual and mesiodistal, and higher proportion of flaring apical constriction.

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