Evaluation of bond strength following the treatment of experimentally induced furcation perforations with different mineral trioxide aggregates in acidic and neutral environments

The aim of this study was to evaluate the push-out bond strength of different bioceramic-based MTA materials used to repair artificially created furcation perforations in maxillary first molar teeth under acidic and neutral pH conditions. A total of 60 extracted maxillary first molars were randomly assigned to three material groups (NeoPutty, Angelus MTA, and PD White MTA), each further divided into two subgroups based on pH condition (acidic and neutral). Standardized furcation perforations were created, the samples were repaired with the respective materials, and incubated at 37°C for 4 days. Subsequently, push-out bond strength tests were performed and failure modes were recorded. Statistical analysis revealed that material type had a significant effect on bond failure (p<0.05), but the differences in pH and material x medium transfer were not significant (p>0.05). Based on the operating characteristics, PD White MTA had the highest bond strength, while Angelus MTA had the lowest. Although the NeoPutty acid analyses showed higher results, this difference was not significant (p>0.05). Furthermore, the most common fracture type in all groups was mixed, and there was a significant difference between the fracture type and overall perspectives (p>0.05). Consequently, the material bond strengths were found to be the most significant factor.