Evaluation of the Root Canal Anatomy of Maxillary and Mandibular Premolars in a Selected German Population Using Cone-beam Computed Tomographic Data

The aim of this study was to investigate the number of roots and the morphology of the root canals of maxillary and mandibular premolars in a selected German population. Randomly selected full-size cone-beam computed tomographic images were collected from 700 patients (45% men and 55% women, average...

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Vydáno v:Journal of endodontics Ročník 43; číslo 9; s. 1448
Hlavní autoři: Bürklein, Sebastian, Heck, Ricarda, Schäfer, Edgar
Médium: Journal Article
Jazyk:angličtina
Vydáno: United States 01.09.2017
Témata:
Bicuspid - anatomy & histology
Bicuspid - diagnostic imaging
Cone-Beam Computed Tomography
Dental Pulp Cavity - anatomy & histology
Dental Pulp Cavity - diagnostic imaging
Female
Germany
Humans
Male
Mandible
Maxilla
Middle Aged
Radiography, Dental
Tooth Root - anatomy & histology
Tooth Root - diagnostic imaging
root canal configuration
root canal anatomy
maxillary premolars
Cone-beam computed tomography
mandibular premolars
ISSN:1878-3554, 1878-3554
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Popis
Shrnutí:The aim of this study was to investigate the number of roots and the morphology of the root canals of maxillary and mandibular premolars in a selected German population. Randomly selected full-size cone-beam computed tomographic images were collected from 700 patients (45% men and 55% women, average age = 50.21 years). This resulted in a total of 644 first and 512 second maxillary premolars as well as 1044 first and 871 second mandibular premolars. The total number of roots and root canals, the frequency and correlations between the left and right sides, and the incidence in men and women were recorded and statistically analyzed using the Fisher exact and chi-square tests. Canal configurations were classified according to the Vertucci classification. First maxillary premolars mainly had 2 roots (1 root: 36.4%, 2 roots: 62.4%, and 3 roots: 1.2%) with predominantly 2 canals (88.4%). The majority of second maxillary premolars had 1 root (82.6%), but 2 root canals (56.3%) occurred more frequently than 1 canal (43.1%). In the first and second mandibular premolars, 1 root was found predominantly (90.76% and 98.16%, respectively) with 1 canal (77.9% and 96.0%), whereas 2 canals were less common (21.9% and 3.6%). Three roots (0%, <0.11%) and 3 canals (0.2%; 0.4%) were rarely found. Vertucci classifications were heterogeneously distributed. Men showed significantly more roots and root canals compared with women (P < .05), with the exception of the second mandibular premolars. This cone-beam computed tomographic study confirmed previous anatomic and morphologic investigations. When treating premolars, the likelihood of additional root canals should be considered.
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ISSN:1878-3554
1878-3554
DOI:10.1016/j.joen.2017.03.044