Comparison of push-out bond strength of bioceramic sealer with bioceramic coated and non-bioceramic coated Gutta-percha: an in vitrostudy

Background: The goal of the endodontic treatment is to achieve a fluid-tight impervious seal to prevent the ingress of bacteria and the occurrence of any pathology in future.The endodontic sealer plays a crucial role in obtaining the hermetic seal by filling all the spaces and by binding to the root dentin and to the core obturating material, which is usually gutta-percha.Aim: This study aimed to compare the push-out bond strength of Endosequence BC sealer with bioceramic coated and non-bioceramic coated gutta-percha.Materials and methods: A total of 36 extracted human maxillary central incisors were decoronated to standardize the root length of 15mm.Working length was determined and Biomechanical preparation for all the samples was done with a Mtwo (VDW Company) rotary file till 40/.06.Samples were randomly divided into three groups containing 12 teeth in each group based on the obturation procedure, namely Group 1: Endosequence BC sealer along with Endosequence bioceramic coated gutta-percha (n=12), Group 2: Endosequence BC sealer along with normal gutta-percha (n=12), Group 3: AH Plus sealer along with normal gutta-percha.All the samples were obturated using single cone technique.The specimens were sectioned orthogonally at middle third to obtain three sections of 1mm thick.All the samples were subjected to the push-out bond strength test with the universal testing machine.The data were subjected to one-way Analysis of Variance (ANOVA) followed by post hoc analysis.Results: Samples obturated with Endosequence BC sealer with Endosequence bioceramic coated gutta-percha showed the maximum push-out bond strength followed by Group 3 and Group 2. One-way Anova showed significant differences (p=0.021)among the groups.In posthoc analysis, the specimens from group 1 exhibited significant differences (p=0.016) with the group 2 specimens.Conclusion: The push-out bond strength of Endosequence Bioceramic sealer with Endosequence Bioceramic coated gutta-percha was significantly higher than that of Endosequence Bioceramic sealer with normal gutta-percha and AH Plus sealer with normal gutta-percha.