Ideal coronal restoration that provides satisfactory esthetic and functional outcome for endodontically treated and extensively damaged teeth is still an arduous task for restorative dentistry. None of the available post systems have all the ideal biological and mechanical properties. Biological dentin posts are considered as a good alternative to conventional post systems as they preserve dentin walls, which results in better distribution of forces along the root surfaces in the compromised tooth. This case report is an attempt to detail “autogenous dentin post” which serves as a homologous unit for the reinforcement of endodontically treated tooth by virtue of its biomimetic property.

Context: Proper method of isolation plays a key role in the restoration of noncarious cervical lesions (NCCLs). Aims: The aim of this in vivo study was to compare the efficacy of two isolation techniques in restoring NCCLs using flowable composite. Settings and Design: Forty patients who fulfill the inclusion criteria were selected based on the power of the study (0.86). The participants were divided into two groups according to the split-mouth design. Materials and Methods: In Group A, lesion isolation was done using the Mylar matrix band with photocurable gingival barrier, and in Group B, using Metal matrix band and gingival barrier. The restorations were assessed immediately and after 6 months, using modified US Public Health Service criteria: marginal integrity, marginal discoloration, wear, retention, secondary caries, and postoperative sensitivity. Statistical Analysis: IBM SPSS (version 21.0) software was used. McNemar's and Chi-square tests were performed, considering P < 0.05 for statistical significance. Results: Both the groups demonstrated satisfactory clinical performance. Upon inter- and intragroup comparison of the two isolation methods, there was no statistically significant difference (P > 0.05). Conclusions: Within the limitations of the study, both the groups performed similarly in isolation of NCCLs. However, long-term clinical studies must be needed for further evaluation.

Aim of the Study: We aimed to compare stress distribution in a tooth restored with fiber post and dentin post after applying the orthotropic properties using three-dimensional finite element analysis (3D-FEA). Materials and Methods: Two 3D-FEA models were constructed. The material properties were assigned, and a load of 100 N was applied at 45° to the long axis of the model onto the lingual surface incisal to the cingulum. The FEA was done by applying orthotropic properties of dentin and fiber post. The maximum stresses produced in the tooth and post referred to as von Mises stress were recorded. The Ansys software was used which depicts the stress concentrations. Results: Von Mises values showed that glass fiber post (331 MPa) and dentin post (338 MPa)-restored tooth models presented similar stress values. Conclusion: Although both fiber post and dentin post presented similar von Mises stress values, the pattern of stress distribution is more favorable in dentin post. More favorable fracture could be expected in case of dentin post. Thus, the dentin post is a promising alternative post material for rehabilitating endodontically treated teeth. Clinical Significance: Ascribing the orthotropic properties in a FEA study means that the computational simulation was similar to that of clinical scenario, and hence simulates the dynamic intraoral conditions, thereby giving the accurate results.