Zhang QN, Zhang Y, Zhang CC, Yuan Y, Wang Q, Yang WD. Analysis of the effects of apical backfilling depth on apical sealing of different root canal filling qualities and morphologies.
J Oral Sci 2023;
65:57-61. [PMID:
36631128 DOI:
10.2334/josnusd.22-0346]
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Abstract
PURPOSE
The aim of this study was to evaluate the effects of apical backfilling depth on the apical sealing of different root canal filling qualities and morphologies.
METHODS
3D-printed root canals (A: round, B: oval, C: long oval, D: flat) were used and divided into subgroups by root canal filling quality (a: good, b: poor, c: nonfilling) and backfilling depth (3 mm, 5 mm). A glucose microleakage device was used to measure leakage.
RESULTS
(1) 3-mm iRoot BP Plus was filled at the apex, and no obvious leakage occurred in the good root canal filling group, which was significantly smaller than that in the poor/nonfilling groups (P < 0.05). Under good root canal filling conditions in groups A, B, C, and D, no obvious leakage was observed. Under poor/nonfilling root canal filling conditions, there was significant leakage; A and B (P > 0.05) and C and D were compared (P < 0.05). (2) Apical backfilling with 5-mm iRoot BP Plus showed no significant leakage in the poor root canal filling groups with the four morphologies.
CONCLUSION
3-mm iRoot BP Plus was filled at the apex, root canal filling was poor, apical sealing was poor, and root canal morphology affected apical sealing. Apical backfilling with 5-mm iRoot BP Plus improved apical sealing under poor root canal filling conditions, and apical sealing was unaffected by root canal morphology.
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