Filling ability of three variants of the single-cone technique with bioceramic sealer: a micro-computed tomography study
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B I O M A T E R I A L S S Y N T H E S I S A N D CH A R A C T E R I Z A T I O N Original Research
Filling ability of three variants of the single-cone technique with bioceramic sealer: a micro-computed tomography study Daniele Angerame
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Matteo De Biasi1 Raffaella Pecci2 Rossella Bedini2 ●
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Received: 12 May 2020 / Accepted: 28 September 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract The present study evaluated the quality of single-cone root canal fillings with bioceramic (BC) sealer using three different techniques by means of micro-computed tomography (micro-CT). The canals of 30 extracted single-rooted permanent teeth were shaped with R40 Reciproc blue files and filled with the single-cone technique (SCT). BioRoot RCS BC sealer was placed inside the canals with one of the following master cones: R40 cone to working length (RWL, n = 10); R40 cone trimmed 1 mm short of working length (RWL-1, n = 10); non-standardized gutta-percha cone to working length (NSWL, n = 10). A quantitative and qualitative micro-CT analysis assessed the filling quality and internal/external voids formation. Collected data underwent statistical analysis by multivariate one-way analysis of variance (α = 0.05). In all groups, the voids were minimal and prevalently external. The NSWL and RWL-1 groups had increased sealer ratios in the whole canal and the apical canal portion, respectively. The lowest amounts of voids were found in the RWL group; the void volumes were slightly greater in the RWL-1 mm and NSWL groups, especially at the apical level. Two alternative SCTs showed satisfactory filling ability, uniform distribution of the BC sealer, and a minimally increased voids formation compared to the standard SCT with dedicated cone. The two tested alternative SCTs could take advantage of the beneficial characteristics of the BC sealer, which evenly filled the endodontic space, ideally sealing both the major and the accessory communications with the periodontium. Graphical Abstract Root canal filling with single cone technique and bioceramic sealer
Dedicated cone to working length
Micro-computed tomography
Trimmed cone to working length - 1 mm
Non-standardized cone to working length
1 Introduction
* Daniele Angerame [email protected] 1
University Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
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Istituto Superiore di Sanità, Rome, Italy
Root canal treatment has the objective of providing a tight seal of the endodontic system after cleaning and shaping the root canals to prevent reinfection and leakage [1]. The quality of root canal filling has an impact on treatment success [2], as the absence of filling voids is associated with an improved outcome of primary root canal treatment [3]. Several filling techniques have been described to achieve
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Journal of Materials Science: Materials in Medicine (2020)31:91
ideally void-free obturation of the endodontic space and to ensure good adaptation of t
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