Abstract
IntroductionThe aim was to analyze the morphological changes of root apex in anterior teeth with periapical periodontitis.Methods32 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.ResultsThe 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.ConclusionsThe 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.
Highlights
The aim was to analyze the morphological changes of root apex in anterior teeth with periapical periodontitis
As the end of the root canal, apical foramen communicates with the periapical tissue and opens onto the root surface
According to the diameter of BL and MD, the apical constriction was located in each tooth
Summary
The aim was to analyze the morphological changes of root apex in anterior teeth with periapical periodontitis. Periapical periodontitis (AP) is one of the most common dental diseases in clinical work [1, 2]. It could cause periapical tissues destruction, hard tissue resorption, and local inflammation. As the end of the root canal, apical foramen communicates with the periapical tissue and opens onto the root surface. It is reported that apical foramen could be the passageway of infections to enter or exit the root canal [9]. Apical morphology was considered and proved to be a significant factor related to the clinic curative effect of root canal treatment [10]
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