Obturation quality of calcium silicate-based cements placed with different techniques in teeth with perforating...

Area of Science:

• Endodontics
• Biomaterials Science
• Dental Imaging

Background:

• Internal root resorption (IRR) presents significant challenges in endodontic treatment.
• Effective obturation of complex internal defects is crucial for successful treatment outcomes.
• Mineral Trioxide Aggregate (MTA) and Biodentine are commonly used bioceramic materials for root canal filling.

Purpose of the Study:

• To compare the obturation quality of MTA and Biodentine.
• To evaluate the effectiveness of hand condensation versus indirect ultrasonic activation.
• To assess filling quality in simulated perforating internal root resorption (IRR) cavities using micro-computed tomography (micro-CT).

Main Methods:

• Standardized perforating IRR cavities were created in human teeth.
• Teeth were divided into four groups: MTA/hand condensation, MTA/ultrasonic activation, Biodentine/hand condensation, Biodentine/ultrasonic activation.
• Micro-CT imaging was used for volumetric analysis of voids and filling materials.

Main Results:

• No significant difference in the percentage volume of filling material was found between MTA and Biodentine.
• Both hand condensation and ultrasonic activation techniques resulted in incomplete obturation.
• The apical portion of the root canals showed significantly less filling material compared to the resorption cavities.

Conclusions:

• Neither material nor technique achieved void-free obturation in teeth with perforating IRR.
• Obturation quality was consistently inferior in the apical region.
• Filling internal root resorption defects, especially in the apical area, remains a clinical challenge.