Cone Beam CT Study on Root and Canal System of Maxillary Premolars and Their Relationship with Maxillary Sinus

doi:10.13701/j.cnki.kqyxyj.2022.01.013

Abstract

Abstract: Objective: To study the root and canal system of maxillary premolars and their relationship with maxillary sinus in order to provide data reference for clinical application. Methods: 866 patients with CBCT image data (1732 maxillary first premolars and 1732 maxillary second premolars) were included and grouped by gender. NNTViewer was used to measure the length of the roots and the number of roots and canals, and analyze the root canal configuration, the relationship between maxillary premolar roots and maxillary sinus, and their gender differences. Results: Single-rooted maxillary premolars were the commonest type, meanwhile, they exhibited more various canal configuration. Most double root maxillary premolars showed Ⅳ configuration(96.3%). Ⅷ configuration existed only in the three roots of maxillary premolars. Conclusion: The root canal system of maxillary premolars was complex and various. The canal morphology of single-rooted teeth was highly variable. The roots were closely correlated with maxillary sinus in the vertical direction.

Key words: variation root canals, canal system, cone beam computed tomography, maxillary sinus

CONG Peilin, ZHANG Fuhua. Cone Beam CT Study on Root and Canal System of Maxillary Premolars and Their Relationship with Maxillary Sinus[J]. Journal of Oral Science Research, 2022, 38(1): 60-64.

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