Use of micro-CT to examine effects of heat on coronal obturation

Shen, Ivy; Daniel, Joan; Vo, Kali; Ahn, Chul; Primus, Carolyn M.; Komabayashi, Takashi

doi:10.2334/josnusd.22-0013

Cited by 1 publication

(1 citation statement)

References 32 publications

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“…These features are in agreement with the previously reported studies that investigated other bioceramic sealers (AH Plus) [32][33][34]. Application of heat has been reported to produce a percentage weight loss [4,35], but bioceramic sealers were reported to undergo minimal structural changes. CWT has been also reported to properly fill even difficult root canals (molar) [23].…”

Section: Differences Among Techniquessupporting

confidence: 91%

A Scanning Electron Microscopy Study Comparing 3 Obturation Techniques to Seal Dentin to Root Canal Bioceramic Sealer in 30 Freshly Extracted Mandibular Second Premolars

Alghamdi

Alamoudi²,

Baba

et al. 2023

Med Sci Monit

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Background:Obturation is a crucial step in dentistry, involving the filling and sealing of a prepared root canal with sealer and core material to prevent bacterial invasion and ensure successful treatment. This study employed scanning electron microscopy to compare the effectiveness of 3 obturation techniques -single-cone technique (SCT), cold lateral compaction technique (CLCT), and continuous-wave technique (CWT) -in sealing dentin to recently introduced root canal bioceramic sealer in 30 extracted mandibular second premolars. The goal was to determine the optimal technique for minimizing gaps at the sealer-dentin interface. Material/Methods:Thirty premolars were divided into 3 groups (n=10 each) based on obturation technique: SCT, CLCT, and CWT. All groups used CeraSeal bioceramic root canal sealer. Root samples were sectioned at apical, middle, and coronal thirds, and high-resolution scanning electron microscopy was performed to measure marginal/internal gaps. Data were analyzed using one-way ANOVA and Tukey range test, with P£0.05 considered statistically significant. Results:CWT showed fewer voids at all levels, with non-significant differences within a technique. Among the techniques, SCT had the largest mean gaps at all levels [apical (5.43±0.16), middle (5.28±0.20), coronal (5.73±0.24)], while CWT had the smallest mean gaps [apical (3.02±0.19), middle (2.95±0.14), coronal (2.76±0.15)]. The differences in means between techniques were statistically significant (P£0.05). Conclusions:CWT obturation with CeraSeal root canal sealer produces fewer marginal gaps at the sealer-dentin interface.

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