Abstract:
Introduction: This study compared the porosity and marginal adaptation to dentine of Biodentine and MTA in the presence and absence of blood in simulated furcation perforation cavities using micro-CT. Methods: Furcation perforation cavities were prepared on 64 extracted human mandibular first molars. Samples were randomly divided into 4 groups: Biodentine with blood contamination group (Biodentine/Blood), Biodentine with normal saline group (Biodentine/NSS), MTA with blood contamination group (MTA/Blood) and MTA with normal saline group (MTA/NSS). All samples were scanned using micro-CT at initial setting time and 24 hours. Mean percent gap volume was calculated from difference between cavity volume and material volume. Mean percent porosity obtained directly from the data report. Results: Blood contamination increased mean percent gap volume in both type of materials significantly (P < .05). Mean percent gap volume of Biodentine/Blood was not significantly different from MTA/Blood. Biodentine/NSS had significantly lower mean percent gap volume compared with MTA/NSS (P < .05). There was no significant difference in mean percent gap volume between initial setting time and 24 hours except for MTA/Blood, which showed significantly higher mean percent gap volume at 24 hours (P < .05). Biodentine/Blood had significantly higher mean percent porosity than Biodentine/NSS, MTA/Blood and MTA/NSS (P < .05). There was no significant difference in mean percent porosity between Biodentine/NSS, MTA/Blood and MTA/NSS. There was no significant difference in mean percent porosity between initial setting time and 24 hours except for Biodentine/Blood, which showed significantly higher mean percent porosity at 24 hours (P < .05). Conclusion: In blood contamination condition, there was no difference in marginal adaptation between Biodentine and MTA. Blood contamination significantly increased gap volume of both materials. In contrast, Biodentine had significantly higher porosity than MTA in blood contaminated condition. Appropriate hemostasis should be carried out when using Biodentine as a furcation repair material.
