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Year : 2023  |  Volume : 13  |  Issue : 1  |  Page : 1-8

Root and root canal morphology of permanent mandibular premolars in Saudi Arabian population: A literature review

Department of Conservative Dental Sciences, College of Dentistry, Qassim University, Buraydah, Kingdom of Saudi Arabia

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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/sej.sej_69_22

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Introduction: Thorough knowledge of the teeth's root and root canal morphology is vital before obtaining access to endodontic therapy. This study aimed to undertake a comprehensive literature review of the root and root canal anatomy of the mandibular premolars in several provinces of Saudi Arabia. Materials and Methods: The PubMed and Scopus databases were screened for relevant literature. Included studies reported data on the number of roots, root canals, canal configurations, and anatomical variations of mandibular premolars in the Saudi population. Gender morphological differences and bilateral symmetry have also been reviewed, along with case reports of anomalies. Results: Fifteen studies that fulfilled the inclusion criteria were included. The weighted average of single-rooted teeth is 91.4% of the mandibular first premolar and 96.7% of the second premolar. Studies of the internal canal morphology revealed that two or more canals were found in 21.5% of the first premolar and 7.1% of the second premolar. Type I Vertucci canal configuration is the most prevalent in mandibular premolars. The multi-rooted or multi-canalled system variants were frequently reported in the clinical case reports. Conclusion: Mandibular first premolars have a higher incidence of multi-canal system than second premolars, hence clinicians should be attentive to the possibility of an extra canal in these teeth. Few studies are available that discuss the root canal morphology of mandibular premolars in the Saudi population, and further studies with a larger sample size covering Saudi Arabia's provinces are indicated.

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