Quantitative assessment of pericervical dentin in mandibular second primary molars through stress distribution analysis: A finite element study
Objective: The purpose of this study was to quantify the Pericervical Dentin (PCD) in the mandibular second primary molar and its role in maintaining structural integrity under masticatory loads using Finite Element Analysis (FEA). By identifying the distribution and stress-bearing capacity of PCD,...
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Elsevier
2025-05-01
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| Series: | Journal of Oral Biology and Craniofacial Research |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2212426825000521 |
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| author | Selvakumar Haridoss Mathan Rajan R Anbarasi K Vijayaragavan E Kavitha Swaminathan |
| author_facet | Selvakumar Haridoss Mathan Rajan R Anbarasi K Vijayaragavan E Kavitha Swaminathan |
| author_sort | Selvakumar Haridoss |
| collection | DOAJ |
| description | Objective: The purpose of this study was to quantify the Pericervical Dentin (PCD) in the mandibular second primary molar and its role in maintaining structural integrity under masticatory loads using Finite Element Analysis (FEA). By identifying the distribution and stress-bearing capacity of PCD, we aim to recommend treatment protocols that maintain PCD to improve fracture resistance in pediatric endodontics. Methods: A 3D model of a mandibular second primary molar was generated from Cone Beam Computed Tomography (CBCT) scans and analyzed using FEA software. Simulated masticatory loads of 353.64 N (maximum), 169.3 N (mean), and 8.05 N (minimum) were applied at angles of 0°, 45°, and 90° to represent vertical, lateral, and maximum masticatory forces. PCD was quantified by measuring stress distribution along buccal, lingual, mesial, and distal surfaces. Results: The analysis revealed that the stress-bearing region in the mandibular second primary molar extends approximately 1–1.5 mm from the Cemento-enamel Junction (CEJ) towards the coronal aspect and 1–1.5 mm from the CEJ towards the radicular aspect, creating a critical 3 mm zone of PCD. The highest stress was consistently found within this PCD zone across on all surfaces of the tooth, highlighting its importance for the tooth’s structural stability. Conclusion: A quantitative analysis of the 3 mm PCD zone (coronal and radicular aspect from the CEJ) emphasizes its critical role in strengthening teeth. Based on these findings, we recommend conservative cavity preparation in pediatric endodontics on preserving PCD to avoid structural weakening and improve long-term clinical outcomes. |
| format | Article |
| id | doaj-art-eb4b5d7e749742b19db20b9b411cea4f |
| institution | DOAJ |
| issn | 2212-4268 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Oral Biology and Craniofacial Research |
| spelling | doaj-art-eb4b5d7e749742b19db20b9b411cea4f2025-08-20T02:58:34ZengElsevierJournal of Oral Biology and Craniofacial Research2212-42682025-05-0115347848310.1016/j.jobcr.2025.02.011Quantitative assessment of pericervical dentin in mandibular second primary molars through stress distribution analysis: A finite element studySelvakumar Haridoss0Mathan Rajan R1Anbarasi K2Vijayaragavan E3Kavitha Swaminathan4Department of Pediatric and Preventive Dentistry, Sri Ramachandra Dental College and Hospital, Sri Ramachandra Institute of Higher Education and Research, Chennai, IndiaDepartment of Conservative Dentistry and Endodontics, Sri Ramachandra Dental College and Hospital, Sri Ramachandra Institute of Higher Education and Research, Chennai, India; Corresponding author. Department of Conservative Dentistry and Endodontics, Sri Ramachandra Dental College and Hospital, Sri Ramachandra Institute of Higher Education and Research, Chennai, India.Department of Oral Medicine and Radiology, Sri Ramachandra Dental College and Hospital, Sri Ramachandra Institute of Higher Education and Research, Chennai, IndiaDepartment of Mechanical Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai, IndiaDepartment of Pediatric and Preventive Dentistry, Sri Ramachandra Dental College and Hospital, Sri Ramachandra Institute of Higher Education and Research, Chennai, IndiaObjective: The purpose of this study was to quantify the Pericervical Dentin (PCD) in the mandibular second primary molar and its role in maintaining structural integrity under masticatory loads using Finite Element Analysis (FEA). By identifying the distribution and stress-bearing capacity of PCD, we aim to recommend treatment protocols that maintain PCD to improve fracture resistance in pediatric endodontics. Methods: A 3D model of a mandibular second primary molar was generated from Cone Beam Computed Tomography (CBCT) scans and analyzed using FEA software. Simulated masticatory loads of 353.64 N (maximum), 169.3 N (mean), and 8.05 N (minimum) were applied at angles of 0°, 45°, and 90° to represent vertical, lateral, and maximum masticatory forces. PCD was quantified by measuring stress distribution along buccal, lingual, mesial, and distal surfaces. Results: The analysis revealed that the stress-bearing region in the mandibular second primary molar extends approximately 1–1.5 mm from the Cemento-enamel Junction (CEJ) towards the coronal aspect and 1–1.5 mm from the CEJ towards the radicular aspect, creating a critical 3 mm zone of PCD. The highest stress was consistently found within this PCD zone across on all surfaces of the tooth, highlighting its importance for the tooth’s structural stability. Conclusion: A quantitative analysis of the 3 mm PCD zone (coronal and radicular aspect from the CEJ) emphasizes its critical role in strengthening teeth. Based on these findings, we recommend conservative cavity preparation in pediatric endodontics on preserving PCD to avoid structural weakening and improve long-term clinical outcomes.http://www.sciencedirect.com/science/article/pii/S2212426825000521Cervical stressFinite element analysisMandibular second primary molarPericervical dentinPediatric dentistryStress distribution |
| spellingShingle | Selvakumar Haridoss Mathan Rajan R Anbarasi K Vijayaragavan E Kavitha Swaminathan Quantitative assessment of pericervical dentin in mandibular second primary molars through stress distribution analysis: A finite element study Journal of Oral Biology and Craniofacial Research Cervical stress Finite element analysis Mandibular second primary molar Pericervical dentin Pediatric dentistry Stress distribution |
| title | Quantitative assessment of pericervical dentin in mandibular second primary molars through stress distribution analysis: A finite element study |
| title_full | Quantitative assessment of pericervical dentin in mandibular second primary molars through stress distribution analysis: A finite element study |
| title_fullStr | Quantitative assessment of pericervical dentin in mandibular second primary molars through stress distribution analysis: A finite element study |
| title_full_unstemmed | Quantitative assessment of pericervical dentin in mandibular second primary molars through stress distribution analysis: A finite element study |
| title_short | Quantitative assessment of pericervical dentin in mandibular second primary molars through stress distribution analysis: A finite element study |
| title_sort | quantitative assessment of pericervical dentin in mandibular second primary molars through stress distribution analysis a finite element study |
| topic | Cervical stress Finite element analysis Mandibular second primary molar Pericervical dentin Pediatric dentistry Stress distribution |
| url | http://www.sciencedirect.com/science/article/pii/S2212426825000521 |
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