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VOLUME 5 , ISSUE 1 ( January-June, 2020 ) > List of Articles
Girija Suresh Sajjan, Kranthi Kiran Sahu, Kanumuri Madhu Varma, Aambika Sigadam, Komatigunta Chennanjali
Keywords : Compromised canals, Intracanal rehabilitation, Pushout bond strength, Smart dentin replacement,Biological post
Citation Information : Sajjan GS, Sahu KK, Varma KM, Sigadam A, Chennanjali K. A Comparative Evaluation of Pushout Bond Strength of Comprehensive Techniques for Intracanal Rehabilitation of Structurally Compromised Roots: An In Vitro Study. J Oper Dent Endod 2020; 5 (1):1-5.
License: CC BY-NC 4.0
Published Online: 08-12-2020
Copyright Statement: Copyright © 2020; Jaypee Brothers Medical Publishers (P) Ltd.
Statement of problem: The restoration of teeth with flared canals and thin dentinal walls has been challenging as the weak radicular structure can be prone to fracture. Materials and methods: Thirty freshly extracted maxillary central incisors adhering to inclusion criteria were selected and decoronated. Canals were made compromised by preparing with peso reamers. Sectional obturation was performed using the rolled cone gutta-percha (Prime Dental, India) technique along with AH Plus sealer (Dentsply). Randomly, the samples were divided into three groups. Group I—Fiber post (DT light post, Bisco, USA) + flowable composite (Tetric N Flow, Ivoclar Vivadent, USA), group II—Biological post + dual cure resin cement (Rely X, 3M, USA), and group III—Smart dentin replacement (SDR, Dentsply, USA) as post material. Two transverse sections of thickness of 1 mm were obtained, from the coronal third and the middle third of the canal from each sample. The pushout bond strengths were measured using a universal testing machine (Instron, Norwood, USA). Results: Group III scored the highest mean with statistical significance compared to groups II and I. Groups II and I showed less pushout bond strength with no statistically significant difference. Conclusion: Smart dentin replacement is a better material for intracanal rehabilitation of teeth with flared canals in terms of pushout bond strength when compared with other groups. DT light post + flowable composite could be used to reinforce weakened roots and is least technique sensitive. Depending on the clinical situation and the availability of doomed teeth, biological post may be preferred.
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