Evaluation of Root Canal Morphology of Mandibular First and Second Premolars Using Cone Beam Computed Tomography in a Defined Group of Dental Patients in Iran

Objective: To study the root and root canal morphology of mandibular premolars in a Kuwaiti subpopulation using cone-beam computed tomography (CBCT). Methods: 152 CBCT images were obtained from the radiology department archives of four dental centers in Kuwait. A total of 476 mandibular premolar teeth were analyzed by two observers. The number of roots, root canal configuration types and canal curvature measurements were examined. The relationship between sex, tooth position, and incidence of an additional canal were compared using the chi-square test, and the level of significance was set at 0.05 (P=0.05). Results: The number of roots in mandibular first premolars was one in 73.9%, two in 24.9%, three and four in 1.2%. On the other hand, the number of roots in mandibular second premolars was one in 79.2% and two in 20.8%. Based on Vertucci’s classification system, 18.7% of the teeth were type II followed by type VI (14.3%). The majority of the examined teeth were straight (74.8%) and the incidence of distal root angulation was about 21%. Canal configurations not included in the Vertucci classification were reported in 102 teeth (21.4%). Variability was significantly higher in the second premolars compared to first premolar (P<0.05). Conclusion: The Kuwaiti population has complex root canal morphology in mandibular premolar teeth.

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“…However, some distal angulation was identified as well. Similar findings were reported by Hajihassani et al ( 47 ).…”

Section: Discussionsupporting

confidence: 92%

“…Alfawaz et al ( 35 ) and Hajihassani et al ( 47 ) did not report C-shaped canals in mandibular premolars in Saudi and Iranian populations, respectfully. By contrast, a higher incidence of C-shaped canals (18%) in the mandibular first premolars has been reported in a Chinese population ( 11 ).…”

Section: Discussionmentioning

confidence: 92%

Root and canal morphology of mandibular premolar teeth in a Kuwaiti subpopulation: A CBCT clinical study

et al. 2020

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“…Lack of information about root anatomy and canal morphology is the second prevalent reason for failed endodontic therapy (1). Therefore, the preoperative recognition of canal morphology and root anatomy leads to more effective cleaning, shaping, and obturation procedures, thereby improving the long-term prognosis of the treatment (1)(2)(3)(4). The root canal system reveals different morphological variations such as C-shaped canal which is reported to cause clinical challenges and to complicate endodontic treatment (5).…”

Section: Introductionmentioning

confidence: 99%

Prevalence of C-Shaped Canals in Anterior and Posterior Teeth of Iranian Population Using Cone Beam Computed Tomography

Rad

Mousavi

Musapoor

et al. 2020

Avicenna J Dent Res

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Background: Lack of knowledge of root anatomy is the second most common reason for failed endodontic therapy. Therefore, acquiring knowledge about it leads to a more effective treatment. C-shaped canal is an anatomical variation that causes clinical challenges. The objective of this study is to determine the occurrence of the C-shaped roots in permanent anterior and posterior teeth of the Iranian population using CBCT (cone beam computed tomography) scans. Methods: This was a descriptive cross-sectional study. In this study, 1408 teeth were assessed. Cranex 3D Mid was used to prepare CBCT images. Each tooth was examined in axial sections, and five different levels were identified as coronal, medium, apical, 1/3, and 2/3. The canal shapes were classified into 5 categories based on modified Melton’s method. Data were analysed using the chi-square test at a significance level of 5%in SPSS version 24.0. Results: In total, of 1408 teeth which were evaluated, 7.81% (110) were confirmed to have C-shaped canals. The occurrence of the C-shaped canal was significantly higher in molars (P < 0.001). The occurrence of the C-shaped canal was significantly higher in mandibular teeth (10.04%) compared to maxillary teeth (5.81%) (P < 0.001). The most common C-shaped canal category was C1 (57.27%). The relationship of gender and age with the C-shaped canal occurrence was not statistically significant (P = 0.585, P = 0.562, respectively). Conclusions: CBCT is a useful tool to evaluate C-shaped root canal morphology. The high occurrence of the C-shaped canal in the Iranian population requires clinical awareness.

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“…The result of his study showed that 9.4% of the mandibular lateral incisors in males had a second canal, whereas this value was 11.9% in females. Among Iranian population, Haji et al [39] reported that there was no significant difference between males and females in the incidence of a second canal in mandibular incisors.…”

Section: Number Of Canals In Permanent Mandibular Incisorsmentioning

confidence: 99%

External and Internal Anatomy of Mandibular Permanent Incisors

Aldawla¹,

Mufadhal²,

Madfa³

2020

Human Teeth - Key Skills and Clinical Illustrations

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A clear understanding of dental root anatomy, external and internal, is an essential prerequisite to all dental procedures. In periodontology, the external root morphology has been proven to have a clinical significance in the predisposing factors of periodontal diseases. Orthodontic literature shows the importance of radicular anatomy in orthodontic mechanics through the concept of anchorage. The significance of internal root anatomy has been emphasized by studies demonstrating that variations in canal geometry before cleaning, shaping, and obturation procedures had a greater effect on the outcome than the techniques themselves. The mandibular central incisor is the smallest tooth in the mouth, but the buccolingual dimension of its root is very large. This tooth is usually single-rooted; however, the root canal system of this group is unpredictable. The incidence of two canals has been reported as low as 0.3% and as high as 45.3%. The wide range of variation reported in literature regarding the prevalence of a second canal has been related to methodological and racial differences. This chapter will summarize the morphological aspects of the root canal anatomy published in the literature of the anterior mandibular teeth. This will provide precious knowledge regarding root canal morphology and its variation among populations.

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Evaluation of Root Canal Morphology of Mandibular First and Second Premolars Using Cone Beam Computed Tomography in a Defined Group of Dental Patients in Iran

Cited by 28 publications

References 32 publications

Root and canal morphology of mandibular premolar teeth in a Kuwaiti subpopulation: A CBCT clinical study

Root and canal morphology of mandibular premolar teeth in a Kuwaiti subpopulation: A CBCT clinical study

Prevalence of C-Shaped Canals in Anterior and Posterior Teeth of Iranian Population Using Cone Beam Computed Tomography

External and Internal Anatomy of Mandibular Permanent Incisors

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