Cone-Beam Computed Tomographic Evaluation of Prevalence and Internal Dental Morphology of Radix Entomolaris and Paramolaris in Mandibular First and Second Molars—A Retrospective Study
Background: Failure to identify root canal variations (such as extra roots) leads to poor prognosis of endodontic therapy. The prevalence of the same should be known to the clinicians. Aim: To evaluate the prevalence of radix entomolaris (RE) and radix paramolaris (RP) and its anatomic variations in...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wolters Kluwer Medknow Publications
2024-12-01
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| Series: | Journal of Indian Academy of Oral Medicine and Radiology |
| Subjects: | |
| Online Access: | https://journals.lww.com/10.4103/jiaomr.jiaomr_200_24 |
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| Summary: | Background:
Failure to identify root canal variations (such as extra roots) leads to poor prognosis of endodontic therapy. The prevalence of the same should be known to the clinicians.
Aim:
To evaluate the prevalence of radix entomolaris (RE) and radix paramolaris (RP) and its anatomic variations in mandibular first and second molars in a tertiary care center in Kolkata, using cone-beam computed tomography (CBCT).
Materials and Methods:
Analysis of 305 CBCT scans (126 males and 179 females; mean age 24.72 ± 8.14 years) was done to evaluate 1220 molars (610 mandibular first molars (MFM) and 610 mandibular second molars (MSM)) to detect radix. Sex, unilateral/bilateral presentation, classification, root canal length, configuration, curvature, and inter-orifice distance were recorded. The results were analyzed with Chi-square test.
Result:
The overall prevalence of radix entomolaris was found to be 2.8% (n = 35), in mandibular first molars—5.4% (n = 33), in mandibular second molars—0.32% (n = 2); higher in females (n = 20) (P = 0.25). Nine scans showed unilateral occurrence, and 13 showed bilateral presentation (P = 0.26). The radix showed typically shorter roots, with root divergence and curvatures, and increased intra-orifice distance. All radices had Vertucci’s Type 1 configuration. Type A radix entomolaris was found to be most prevalent—60% (n = 21), followed by Type AC—20% (n = 7).
Conclusion:
The results of this study recommend modifying the access cavity preparation, using magnification, and encourage the use of advanced radiographic techniques like cone-beam computed tomography whenever radix is suspected. |
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| ISSN: | 0972-1363 0975-1572 |