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Filling ability and blooming artifact expression in long-oval root canals: influence of CBCT device, endodontic
Gustavo Ovigli1, Airton Oliveira Santos-Junior1, Karina Ines Medina Carita Tavares1
1Araraquara Dental School, Department of Restorative Dentistry, São Paulo State University, Araraquara, SP, Brazil.
Objectives:
To compare the filling ability of long oval root canals with epoxy resin-based and bioceramic sealers, and to assess the influence of two CBCT devices and the blooming artifact reduction (BAR) filter (e-Vol DX Software) on dimensional analysis of root canal fillings, with micro-CT as reference.
Methods:
Mandibular incisors were prepared and filled with AH Plus Jet or Bio-C Sealer, then scanned with VeraView X800 and OP300 Maxio CBCT devices, with micro-CT as the reference. Micro-CT images were analyzed to determine the filling ability of each sealer. Three blinded examiners assessed CBCT images, and dimensional analyses compared measurements before and after BAR filter application. Unpaired t-test, ICC, and ANOVA/Tukey were applied (α = 5%).
Results:
Both sealers showed high filling ability (p > 0.05). Intra- and inter-examiner agreement demonstrated excellent reproducibility (p < 0.001). Both CBCT devices overestimated canal filling, particularly VeraView X800 without the filter. Application of the BAR filter reduced blooming artifacts in VeraView X800 scans, enhancing dimensional assessment of the root canal in the apical third for AH Plus Jet and across all thirds for Bio-C Sealer (p < 0.05).
Conclusions:
Both sealers exhibited high and comparable filling ability. The BAR filter reduced blooming artifacts in VeraView X800 images, with more consistent effect observed for Bio-C Sealer.
