A micro-computed tomography evaluation of voids using calcium silicate-based materials in teeth with simulated...

Area of Science:

• Endodontics
• Dental Materials Science
• Restorative Dentistry

Background:

• Internal root resorption (IRR) presents challenges in achieving complete obturation.
• Evaluating new endodontic materials for their sealing capabilities in complex root canal anatomy is crucial.

Purpose of the Study:

• To compare the obturation quality of Mineral Trioxide Aggregate (MTA), Biodentine, Total Fill BC root canal sealer (RCS) in bulk-fill form, and warm gutta-percha (WGP) with Total Fill BC RCS in simulated internal root resorption cavities.
• To assess the percentage of voids, both external and internal, using micro-computed tomography.

Main Methods:

• Forty extracted maxillary central incisors with standardized internal root resorption cavities were used.
• Teeth were randomly assigned into four groups, each receiving a different obturation material or combination.
• Micro-computed tomography was employed to quantify void percentages within the obturated cavities.

Main Results:

• Total Fill BC sealer in bulk-fill form exhibited the highest percentages of external and internal voids.
• Biodentine demonstrated the lowest percentage of external voids.
• Warm gutta-percha combined with Total Fill BC RCS showed significantly lower internal void percentages compared to most groups.

Conclusions:

• Complete void-free obturation was not achieved by any tested material in resorption cavities.
• Biodentine appears to be a more favorable material for obturation in teeth with internal root resorption compared to Angelus MTA and the bulk-fill form of Total Fill BC RCS.