Stress analysis of horizontal mid‐root fracture managed with different intraradicular fixation protocols: A 3D‐finite element study

• Published in: European journal of oral sciences Vol. 132; no. 2; pp. eOS12971 - n/a
• Main Authors: Jasrasaria, Neha, Johri, Saumya, Bharti, Ramesh, Tikku, Aseem Prakash
• Format: Journal Article
• Language: English
• Published: England Wiley Subscription Services, Inc 01.04.2024
• Subjects: Dentin; Dentistry; Endodontics; fiber‐post; finite element analysis; Finite element method; Fractures; Horizontal root fracture; intra‐radicular splinting; Ligaments; Periodontal ligament; Root canals; Stress analysis; Stress distribution; Surgical instruments; Teeth; Three dimensional models; Horizontal root fracture; finite element analysis; fiber-post; intra-radicular splinting
• ISSN: 0909-8836; 1600-0722
• DOI: 10.1111/eos.12971

The current study evaluated the stress distribution in a maxillary central incisor with mid‐root fracture after splinting with different intra‐radicular posts using 3D‐finite element analysis (FEA). Five 3D‐FEA models were constructed. Model 1 was an intact tooth with no fracture, Model 2: A tooth with a horizontal mid‐root fracture, with no treatment. Model 3: Same as model 2, and intraradicular splinting using fiber post. Model 4: Same as model 2 and intra‐radicular splinting using Protaper Gold file F3. Model 5: Same as model 2, and with intraradicular splinting with Ribbond. The FEA of all models was done to obtain the maximum Von‐Mises stress in the root canal space, the dentin, the periodontal ligament, and the bone. The highest Von Mises stresses for the root canal space and the dentin were found in Model 3, followed by models 4, 5, and 2, and least in Model 1. The Von Mises stress of the periodontal ligament was the least in model 1. The Von Mises stress of bone was higher in all experimental models than in the baseline model. The results suggest that in cases where intra‐radicular splinting is indicated, fiber posts and Ribbond are better alternatives to endodontic files due to the lower stresses exerted.