Volume of sealer in the apical region of teeth filled by different techniques: a micro-CT analysis

Araújo, V.L.C.; Souza‐Gabriel, Aline Evangelista; Filho, Antônio Miranda da Cruz; Pécora, Jesus Djalma; Silva, Ricardo Gariba

doi:10.1590/1807-3107bor-2016.vol30.0027

Cited by 8 publications

(8 citation statements)

References 32 publications

(49 reference statements)

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“…Micro-CT is an innovative tool that provide high-resolution 3-dimensional evaluation of root canal fillings, allowing further exploration of precise internal structures of the sealers in a nondestructive way 20 . For this reason, micro-CT is considered as the gold standard for the filling analysis 21 . Based on this important characteristic to an accurate evaluation, Tanomaru-Filho et al 7 proposed a new technique for assessing flow and filling of root-end filling materials using micro-CT imaging.…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of flow and filling of root canal sealers using different methodologies

Torres

Guerreiro-Tanomaru

Pinto

et al. 2019

Rev. odontol. UNESP

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Introduction Flow and filling ability of root canal sealers are indispensable for hermetic sealing of the root canal. Micro-computed tomography (micro-CT) can be used as a complementary methodology to evaluate such properties. Objective To evaluate the flow and filling ability of AH Plus, Endofill and Sealapex by conventional methodology and micro-CT. Material and method The flow of the sealers was analyzed according to ISO 6876/2012 and complemented by the area evaluation. Glass plates were manufactured with diameters of 1×1×2 mm and 1×1×1 mm (length, width and height), with a central cavity and four grooves in the horizontal and vertical directions. Each material was placed in the central cavity. Another glass plate and a metal weight were placed on the cement and kept for 10 minutes. The glass plate/sealer set was scanned using micro-CT. The flow was calculated by linear measurement of the material in the grooves. The central filling (mm3) was calculated in the central cavity and the lateral filling was measured up to 2 mm from the central cavity. Data were submitted to ANOVA/Tukey tests (α=0.05). Result All evaluated sealers presented flow according to ISO 6876 standards. The materials showed central cavity filling capacity higher than 80% and lateral filling greater than 75%. There was no difference in flow (mm and mm2) and in the filling ability (mm3) provided by the materials (p>0.05). Conclusion All evaluated root canal sealers showed adequate flow and filling capacity, suggesting their clinical application.

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Section: Discussionmentioning

confidence: 99%

“…Araujo et al 21 used micro-CT to evaluate AH Plus, Sealapex and Endofill regarding their volume in the 1 mm apical third after obturation of the teeth. In this study, the lowest volume of sealer was observed in teeth filled with Sealapex and Endofill.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of flow and filling of root canal sealers using different methodologies

Torres

Guerreiro-Tanomaru

Pinto

et al. 2019

Rev. odontol. UNESP

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“…28 In contrast, from the nano-CT results, when a voxel-resolution of 1.58 µm was achieved, it was found that an obvious increase of void fraction and void volume in AH Plus, compared with the bioceramic sealers. This was consistent with a previous finding, which reported underestimation of void volume while using lower resolution micro-CT. 29 Even although micro-CT is considered as the gold standard for analysis of filling quality, 30 the evidence from this birpublications.org/dmfr Evaluation of sealer filling quality using micro-CT and nano-CT Huang et al study has suggested that there might be a threshold of voxel-resolution for the quantitative analysis of voids of endodontic sealers by 3D imaging tools.…”

Section: Discussionmentioning

confidence: 99%

Micro-CT and nano-CT analysis of filling quality of three different endodontic sealers

Huang

Çelikten

Vasconcelos

et al. 2017

Dentomaxillofacial Radiology

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Bioactive sealers showed higher root filling rate, lower incidence rate of voids, void fraction and void volume than AH Plus under nano-CT analysis, when round root canals were treated by the single cone technique. The disparate results suggest that the higher resolution of nano-CT have a greater ability of distinguishing internal porosity, and therefore suggesting the potential use of nano-CT in quantitative analysis of filling quality of sealers.

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“…Micro-computed tomography (micro-CT) has allowed new perspectives for endodontic research (9), especially to the studies on the factors related to the induction of dentinal microcracks. This technology makes it possible to investigate the presence of dentinal defects with a detailed resolution before and after canal preparation without sectioning the specimens (10)(11)(12)(13)(14).…”

Section: Introductionmentioning

confidence: 99%

Effect of Reciprocating Systems and Working Lengths on Apical Microcrack Development: a micro-CT Study

et al. 2017

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The objective of this study was to evaluate the effect of root canal preparation with single-file reciprocating systems at different working lengths on the development of apical microcracks using micro-computed tomographic (micro-CT) imaging. Forty extracted human mandibular incisors were randomly assigned to 4 groups (n=10) according to the systems and working length used to prepare the root canals: Group A - WaveOne Gold at apical foramen (AF), Group B - WaveOne Gold 1 mm short of the AF (AF-1 mm), Group C - Unicone (AF) and Group D - Unicone (AF-1 mm). Micro-CT scanning was performed before and after root canal preparation at an isotropic resolution of 14 µm. Then, three examiners assessed the cross-sectional images generated to detect microcracks in the apical portion of the roots. Apical microcracks were visualized in 3, 1, 1, and 3 specimens in groups A, B, C, and D, respectively. All these microcracks observed after root canal preparation already existed prior to instrumentation, and no new apical microcrack was detected. For all groups, the number of slices presenting microcracks after root canal preparation was the same as before canal preparation. Root canal preparation with WaveOne Gold and Unicone, regardless of the working length, was not associated with apical microcrack formation.

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Volume of sealer in the apical region of teeth filled by different techniques: a micro-CT analysis

Cited by 8 publications

References 32 publications

Evaluation of flow and filling of root canal sealers using different methodologies

Evaluation of flow and filling of root canal sealers using different methodologies

Micro-CT and nano-CT analysis of filling quality of three different endodontic sealers

Effect of Reciprocating Systems and Working Lengths on Apical Microcrack Development: a micro-CT Study

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