Influence of foraminal enlargement on the apical extrusion of filling material: Volumetric analysis using micro‐computed tomography

2020 ◽  
Vol 46 (2) ◽  
pp. 210-216
Author(s):  
Patrícia Pereira Albuquerque ◽  
Marco Antonio Hungaro Duarte ◽  
Rina Andréa Pelegrine ◽  
Augusto Shoji Kato ◽  
Carolina Pessoa Stringheta ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Volumetric Analysis ◽  
Filling Material ◽  
Micro Computed Tomography ◽  
Apical Extrusion

scholarly journals Quantitative volumetric analysis of cardiac morphogenesis assessed through micro-computed tomography

2007 ◽  
Vol 236 (3) ◽  
pp. spc1-spc1
Author(s):  
Jonathan T. Butcher ◽  
David Sedmera ◽  
Robert E. Guldberg ◽  
Roger R. Markwald
Keyword(s):  
Computed Tomography ◽  
Volumetric Analysis ◽  
Micro Computed Tomography ◽  
Cardiac Morphogenesis

scholarly journals Porosity Distribution in Apically Perforated Curved Root Canals Filled with Two Different Calcium Silicate Based Materials and Techniques: A Micro-Computed Tomography Study

Materials ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 1729 ◽  
Author(s):  
Saulius Drukteinis ◽  
Vytaute Peciuliene ◽  
Hagay Shemesh ◽  
Paulius Tusas ◽  
Ruta Bendinskaite
Keyword(s):  
Computed Tomography ◽  
Volumetric Analysis ◽  
Apical Region ◽  
Micro Computed Tomography ◽  
Porosity Distribution ◽  
Isotropic Resolution ◽  
Root Canals ◽  
Mandibular Molars ◽  
Before And After ◽  
Application Techniques

The present study evaluated the porosity distribution of BioRoot RCS/single gutta-percha point (BR/SC) and MTA flow (MF) fillings, which were used as plugs for the apical perforation repair in curved canals of extracted mandibular molars using micro-computed tomography (μCT). Forty mesial root canals of mandibular first molars were shaped with ProTaper NEXT X1–X5 files 2 mm beyond the apex to simulate apical perforations that were randomly divided into two groups (n = 20) according to the material and technique used for the apical plug: BR/SC or MF. The specimens were scanned before and after canal filling at an isotropic resolution of 9.9 μm. The volumetric analysis of voids in the apical 5 mm of the fillings was performed. Data were analyzed using one-way ANOVA with Bonferroni correction (p < 0.05). Micro-computed tomography (µCT) evaluation revealed significant differences between the groups in terms of porosity: the total volume and percentage volume of voids was lower in the BR/SC group in comparison with the MF group (p < 0.05), with the predominance of open pores in both groups. Neither of the materials and/or application techniques were able to produce void-free root fillings in the apical region of artificially perforated curved roots of mandibular molars.

scholarly journals Volumetric analysis of the cranial and nasal cavity from micro-computed tomography scans in the rabbit

2020 ◽  
Vol 79 (2) ◽  
pp. 333-338
Author(s):  
C. Bakıcı ◽  
R. O. Akgun ◽  
O. Ekım ◽  
C. Soydal ◽  
C. Oto
Keyword(s):  
Computed Tomography ◽  
Nasal Cavity ◽  
Volumetric Analysis ◽  
Micro Computed Tomography ◽  
Computed Tomography Scans

scholarly journals Comparison of Two Techniques for Selection of Master Gutta-Percha Cone Using Micro-Computed Tomography

2013 ◽  
Vol 24 (4) ◽  
pp. 367-370 ◽  
Author(s):  
Joao Manoel Silva-Filho ◽  
Aline Evangelista Souza-Gabriel ◽  
Graziela Bianchi Leoni ◽  
Samuel Henrique Camara De-Bem ◽  
Edson Alfredo ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Conventional Technique ◽  
Filling Material ◽  
Micro Ct ◽  
Micro Computed Tomography ◽  
Root Canals ◽  
Gutta Percha ◽  
Working Length ◽  
Significant Difference ◽  
Material Volume

This study used micro-computed tomography (micro-CT) to evaluate the fit of the master gutta-percha cone at time of cone fit, gutta-percha volume in the filling material, and the filling material volume in relation to the canal at the apical limit of the working length. Root canals of 20 maxillary central incisors were prepared with rotary instruments and distributed into two groups (n=10). The gutta-percha cone tip was either plasticized (apical thermal impression technique - ATI) or not (conventional technique - CT), and its apical fit was checked. The apical 1 mm of working length was examined with a micro-CT, canals were filled with gutta-percha and sealer, and new micro-CT scans were obtained. In CT, gutta-percha filled 35.83 ± 15.05% of the canal at cone selection and 38.72 ± 11.64% after filling. In ATI, these values were 23.14 ± 7.74% and 26.98 ± 20.40%, respectively. Gutta-percha volume in the filling material, and filling material volume in relation to the canal were, respectively, 61.28 ± 11.64% and 87.76 ± 9.98% for CT, and 73.00 ± 20.41% and 89.96 ± 9.08% for ATI. No significant difference was found between cone selection and after canal filling, for either CT (p=0.593) or ATI (p=0.4975). The techniques did not differ significantly with respect to gutta-percha volume in the filling material (p=0.132) and filling material volume in relation to the canal (p=0.612). An ideal fit of the master gutta-percha cone at working length was not achieved regardless of the cone selection technique, and the material-filled area was similar for both techniques.

scholarly journals Efficacy of reciprocating and rotary systems for removing root filling material: A micro-computed tomography study

Scanning ◽  
2014 ◽  
Vol 36 (6) ◽  
pp. 576-581 ◽  
Author(s):  
D. Helvacioglu-Yigit ◽  
A. Yilmaz ◽  
G. Kiziltas-Sendur ◽  
O. S. Aslan ◽  
P. V. Abbott
Keyword(s):  
Computed Tomography ◽  
Filling Material ◽  
Micro Computed Tomography

scholarly journals The Efficacy of Rotary, Reciprocating, and Combined Non-Surgical Endodontic Retreatment Techniques in Removing a Carrier-Based Root Canal Filling Material from Straight Root Canal Systems: A Micro-Computed Tomography Analysis

2020 ◽  
Vol 9 (6) ◽  
pp. 1989 ◽  
Author(s):  
Tarek-Fahed Alakabani ◽  
Vicente Faus-Llácer ◽  
Ignacio Faus-Matoses ◽  
Celia Ruiz-Sánchez ◽  
Álvaro Zubizarreta-Macho ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Root Canal ◽  
Material Removal ◽  
Filling Material ◽  
Micro Computed Tomography ◽  
Root Canal Filling ◽  
Root Canal Retreatment ◽  
Before And After ◽  
Canal Systems ◽  
Endodontic Retreatment

The aim of this study is to analyze and compare the efficacy of three non-surgical endodontic retreatment techniques in removing a carrier-based root canal filling material from straight root canal systems. The study was performed on 99 single-rooted extracted teeth using the ProTaper Gold endodontic rotary system up to the F2 file (Dentsply Maillefer, Baillagues, Switzerland), which were sealed with GuttaCore (Dentsply Maillefer, Ballaigues, Switzerland) and AH plus epoxy resin sealer (Dentsply DeTrey, Konstanz, Germany) and randomly assigned to the following non-surgical retreatment techniques: ProTaper Retreatment endodontic rotary instruments (D1–D3 files, Dentsply Maillefer, Ballaigues, Switzerland; n = 33, PTR), Reciproc Blue endodontic reciprocating instrument (R50, VDW, Munich, Germany; n = 33, RCB50), and a combined root canal retreatment technique between Gates-Glidden drills (sizes #3 and #2, Dentsply Maillefer, Ballaigues, Switzerland) and Hedstrom files (file size 35, 30, and 25, Dentsply Maillefer, Ballaigues, Switzerland; n = 33; H-GG). All of the teeth were submitted twice to a micro-computed tomography (micro-CT) scan, before and after non-surgical endodontic retreatment procedures. The volume of root canal filling material (mm3), volume of remaining root canal filling material (mm3), non-surgical endodontic retreatment working time (min), proportion of remaining root canal filling material (%), and efficacy of root canal filling material removal between the non-surgical endodontic retreatment techniques were analyzed using ANOVA one-way statistical analysis. Statistically significant differences were observed between the proportions of remaining root canal filling material of PTR and H-GG (p = 0.018), between the non-surgical endodontic retreatment working times (min; p < 0.001), and between the efficacies of root canal filling material removal by the non-surgical endodontic retreatment techniques (p = 0.009). However, the non-surgical endodontic retreatment systems allow for similar carrier-based root canal filling material removal.

scholarly journals Supplementary solvent irrigation efficacy on filling remnants removal comparing XP-endo Finisher R vs IrriSafe

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Inês Ferreira ◽  
Pedro S. Babo ◽  
Ana Cristina Braga ◽  
Maria Ascensão Lopes ◽  
Manuela E. Gomes ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Solvent Mixture ◽  
Filling Material ◽  
Methyl Ethyl ◽  
Micro Computed Tomography ◽  
Root Canal Filling ◽  
Total Recovery ◽  
Significance Level ◽  
Filling Materials ◽  
Initial Root

AbstractThis study aimed to compare the efficacy of XP-endo Finisher R and IrriSafe, with a solvent mixture of Methyl ethyl ketone/Tetrachloroethylene (MEK/TCE), in the removal of root filling residues. Twenty-four human mandibular incisors were pair-matched by micro-computed tomography according to volume and aspect ratio. After retreatment, specimens were allocated to two experimental groups (n = 12), according to the supplementary instrument used. The volume of residual filling material after each irrigating step and the time for retreatment was calculated. Statistical analyses were carried out using Mann–Whitney test, with a significance level of 5%. The volume of initial root canal filling material between the groups was similar (p > 0.05). With the final irrigation protocol (NaOCl and EDTA) the volume of the filling remnants decreased significantly (p < 0.05) with no differences between IrriSafe or XP-endo Finisher R (p > 0.05). The additional solvent mixture MEK/TCE increased the efficiency of filling materials reduction, regardless of the agitating instruments employed, IrriSafe or XP-endo Finisher R (p < 0.05). There was no difference between the two groups regarding the time (p = 0.149). Both supplementary instruments were effective in the reduction of filling remnants. The additional step with a solvent mixture of MEK/TCE enabled a total recovery of patency and the achievement of cleaner canals, independently of the agitation instrument.

scholarly journals Quantitative volumetric analysis of cardiac morphogenesis assessed through micro-computed tomography

2007 ◽  
Vol 236 (3) ◽  
pp. 802-809 ◽  
Author(s):  
Jonathan T. Butcher ◽  
David Sedmera ◽  
Robert E. Guldberg ◽  
Roger R. Markwald
Keyword(s):  
Computed Tomography ◽  
Volumetric Analysis ◽  
Micro Computed Tomography ◽  
Cardiac Morphogenesis

scholarly journals Retreatment of mesial roots of mandibular molars filled with resin- based and bioceramic sealers

2021 ◽  
Vol 20 ◽  
pp. e210432
Author(s):  
Marina de Almeida Salim ◽  
Fabiola Ormiga ◽  
Ricardo Tadeu Lopes ◽  
Heloisa Gusman
Keyword(s):  
Computed Tomography ◽  
Root Canal ◽  
T Test ◽  
Filling Material ◽  
Micro Ct ◽  
Micro Computed Tomography ◽  
Mandibular Molars ◽  
Ct Analysis ◽  
Ah Plus ◽  
Endodontic Retreatment

Aim: The aim of this study was to evaluate, by micro-computed tomography (micro-CT) analysis, the remaining filling material during endodontic retreatment performed with Protaper retreatment without solvent. Methods: Forty mandibular molars were divided into two groups (n = 20) according to the sealer used in the obturation: the bioceramic TotalFill BC (TF) or the resin-based AH Plus (AHP). The specimens were scanned before instrumentation, after obturation and after filling removal. Only the mesial roots were analysed. The filling volumes and the remaining filling material were calculated in the entire root canal and in the cervical, middle and apical thirds. Results: The volume of obturation and the volume of remaining filling material in the entire root canal and in the cervical, middle and apical thirds of the canal between the groups were not statistically different (independent t-test, p > 0.05). In the AHP group, there was a higher percentage of remaining filling material in the middle third than in the cervical third (p < 0.05). Conclusion: The filling material could not be entirely removed from any specimen.

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