Influence of obturating techniques on root dentin crack propagation: A micro-computed tomography assessment

Aim: The aim is to assess and compare the microcrack formation in radicular dentin after obturating the root canals with cold lateral condensation (CLC), warm vertical condensation (WVC), and injectable gutta-percha (IGP) techniques using micro-computed tomography (CT). Materials and Methods: Human...

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Bibliographic Details
Published in:Journal of conservative dentistry 2021-01, Vol.24 (1), p.72-76
Main Authors: Chellapilla, Praveen, Boddeda, Mohan, Jyothi, Mandava, Uppalapati, Lakshman, Konagala, Ravi, Dasari, Lohita
Format: Article
Language:English
Subjects:
Computed tomography
Crack propagation
Dentin
Endodontics
Original
Root canals
Sodium hypochlorite
Statistical analysis
Tomography
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Summary:Aim: The aim is to assess and compare the microcrack formation in radicular dentin after obturating the root canals with cold lateral condensation (CLC), warm vertical condensation (WVC), and injectable gutta-percha (IGP) techniques using micro-computed tomography (CT). Materials and Methods: Human extracted mandibular premolar teeth (n = 60) were haphazardly assigned based on the obturation technique into three experimental groups (n = 20 each). Root canals are cleaned and shaped with M Two rotary files and 3% sodium hypochlorite irrigant. Cross-sectional images were taken with Micro-CT to record the baseline defects present on root samples. After root canal obturation either with CLC or WVC or injectable obturation techniques, micro-CT images were captured again to analyze the increase in the number and type of dentinal defects. Statistical analysis of data was performed using the Mann-Whitney U test and the Mcnemar test at 5% significance level. Results: An increase in the number of radicular micro-cracks was identified in samples obturated with lateral condensation technique (1.66%). No change in the percentage of micro-cracks was recorded after obturation with warm vertical or injectable guttapercha (IGP) techniques (P > 0.05). The three obturation techniques were not statistically different in the occurrence of micro-cracks after obturation. Conclusion: The three obturating techniques tested showed no significant increase in radicular dentin defects' occurrence or propagation.
ISSN:0972-0707
0974-5203
DOI:10.4103/JCD.JCD_591_20