Abstract
Introduction
The present study evaluated the percentage volume of voids in root canals of mandibular
molars that had been obturated for 54 months.
Methods
Thirty extracted human mandibular molars were instrumented and debrided. The teeth
were assigned to 3 groups (n = 10) according to the filling technique and sealer used: the single-cone technique
using AH Plus sealer (AHS; Dentsply Sirona Endodontics, Tulsa, OK) or EndoSequence
BC sealer (BCS; Brasseler USA Dental LLC, Savannah, GA) and the warm vertical compaction
technique using AH Plus sealer (AHW). The specimens were stored at 37°C and 100% humidity.
Micro–computed tomographic imaging was used to scan each specimen 1 day 54 months
after obturation. Data were analyzed using 1-way analysis of variance and the paired
t test.
Results
The percentage volume of voids in the teeth 1 day after obturation in the AHS group
was higher than in the BCS group and the AHW group (P < .05). After 54 months, the proportion of voids decreased in all groups (P < .05). No significant difference was observed between the AHS group and the BCS
group after 54 months. Teeth in the AHW group contained fewer voids than the AHS group
(P < .05).
Conclusions
Voids in root canal filling were reduced 54 months after obturation. The warm vertical
compaction technique achieved better root canal filling quality in mandibular molars
than the single-cone technique when using AHS after long-term storage at 100% humidity.
Key Words
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Article info
Publication history
Published online: September 04, 2021
Identification
Copyright
Published by Elsevier Inc. on behalf of American Association of Endodontists.
