Abstract:

Objective To evaluate and compare the impact of three root canal sealers (C-Root SP, iRoot SP, and AH-Plus Jet) on the sealing performance in single-cone root canal filling using micro-computed tomography (Micro-CT). Methods Ninety mandibular single-rooted extracted teeth meeting inclusion criteria were collected, prepared with Protaper Next up to X3, and randomly assigned to three experimental groups which were C-Root SP group (Group A), iRoot SP group (Group B), and AH-Plus Jet group (Group C). Subsequently, all three groups underwent single-cone root canal filling, followed by one week of oral environment simulation. The sealing performance of the three root canal sealers was evaluated by measuring the proportion of the root canal volume and its rate using Micro-CT. Results In different segments of the roots (upper 1/3, middle, and lower), identifiable bubbles were observed in the Group A, Group B and Group C, with volumes of (0.15±0.03)mm³, (0.22±0.11)mm³, and (0.34±0.28) mm³, respectively. Overall, Group A exhibited the smallest bubble volume (0.15±0.03) mm³. Group A and B were similar, they were superior to group C. (P<0.05) Nevertheless, in the apical 1/3 segment (0-3 mm), a significant statistical difference was observed between the bubble volumes of Group A (0.01±0.01)mm³ and Group C (0.12±0.08)mm³ (P<0.05), while no significant difference was observed compared to Group B. Conclusion The apical sealing performance of C-Root SP is similar to iRoot SP and superior to AH-Plus Jet. C-Root SP can be considered as a favorable choice for root canal sealer.

Key words: C-Root SP, iRoot SP, AH-Plus Jet, Micro-CT, root canal sealer