scholarly journals Micro-CT Evaluation of a Novel Technique Used for The Removal of Single Cone Obturated Mesial Roots of Mandibular First Molars Filled with Bioceramic Sealer and Bioceramic Coated Gutta Percha vs Traditional Gutta Percha

2017 ◽  
Author(s):  
Ernest Stephen Fragale II
Keyword(s):  
Micro Ct ◽  
Novel Technique ◽  
Gutta Percha ◽  
Single Cone ◽  
Ct Evaluation

scholarly journals Adaptation of the single-cone in prepared long oval-shaped canals: a micro-computed tomography study

2021 ◽  
Vol 10 (15) ◽  
pp. e444101523301
Author(s):  
Christianne Velozo ◽  
Hugo Dantas ◽  
Basílio Rodrigues Vieira ◽  
Frederico Barbosa de Sousa ◽  
Victor Felipe Farias do Prado ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Root Canal ◽  
Micro Ct ◽  
Micro Computed Tomography ◽  
Mean Values ◽  
Root Canals ◽  
Gutta Percha ◽  
Working Length ◽  
Single Cone ◽  
Student’S T

The present study aimed to evaluate adaptation of the single gutta-percha cone on root canal walls prepared with the two systems, the XP-endo Shaper (XPS; FKG Dentaire, La Chaux-de-Fonds, Switzerland) and ProTaper Next systems (PTN; Dentsply Sirona, Ballaigues, Switzerland) by using micro-computed tomography (micro-CT) technology. Twenty long oval-shaped canals in mandibular incisors were scanned by micro-CT (Skyscan 1172; Bruker microCT, Kontich, Belgium). Two groups were divided into (n = 10) according to the canal preparation protocol: XPS group with an extra 45 s of instrumentation and PTN group. A gutta percha cone, with respect to the protocol used for each group (size 40, .04 taper, XPS and size 40, .06 taper, PTN) was adapted to the canal at the working length of all the samples, and all root canals were filled, using the single-cone technique. The mean values for volume of voids and percentage relative to the mentioned space were correspondingly higher in XPS group than they were PTN group, mean values for volume of voids (3.61 mm3 - 1.92 mm3) and for percentage of voids (39.25% - 23.28%), respectively, significant differences were recorded (p < 0.05) between the two groups (XPS and PTN, Student’s-t test for homogenous variances and Mann–Whitney test). The canals prepared with XPS, in the procedure performed with an extra 45 s of instrumentation, showed a higher volume of voids than those prepared with the PTN system, in obturation of the root canal with the single cone technique.

scholarly journals Evaluation of Root Canal Filling with a Bioceramic Sealer Using Micro-Computed Tomography: A Pilot Study

2019 ◽  
Vol 890 ◽  
pp. 275-282
Author(s):  
Isabel Vasconcelos ◽  
Mário Rito Pereira ◽  
António Ginjeira ◽  
Margarida C. Franco ◽  
Pedro Morouço ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pilot Study ◽  
Root Canal ◽  
Future Research ◽  
Micro Ct ◽  
Micro Computed Tomography ◽  
Root Canal Filling ◽  
Gutta Percha ◽  
Single Cone ◽  
Ah Plus

This pilot study aims to define a protocol for optimizing the micro-computed tomography (micro-CT) settings to evaluate in the future research the root canal filling in oval shaped canals. Thirty distal canals of mandibular molars were used. After preparation of the canals, the roots were randomly divided into five groups. The canals were filled with two types of sealers (Endosequence BC Sealer or AH Plus) and two types of gutta percha (Protaper Next cones and Endosequence BC cones), using thermal obturation in comparison with a single cone obturation technique. Each specimen was scanned three times using a micro-CT device at a resolution of 30,1 μm. The first scan was done for selecting the specimen according the inclusion criteria, the second one post-instrumentation and the last micro-CT scan after obturation the specimens. For the present study, the images were only evaluated with qualitative criteria and the settings for acquisition, reconstruction and analysis of micro-CT images were tested.

Micro‐CT evaluation of filling of flattened root canals using a new premixed ready‐to‐use calcium silicate sealer by single‐cone technique

2020 ◽  
Author(s):  
Karina I. M. C. Tavares ◽  
Jáder C. Pinto ◽  
Airton O. Santos‐Junior ◽  
Fernanda F. E. Torres ◽  
Juliane M. Guerreiro‐Tanomaru ◽  
...  
Keyword(s):  
Calcium Silicate ◽  
Micro Ct ◽  
Root Canals ◽  
Single Cone ◽  
Ct Evaluation

scholarly journals An In Vivo 3D Micro-CT Evaluation of Tooth Movement After the Application of Different Force Magnitudes in Rat Molar

2009 ◽  
Vol 79 (4) ◽  
pp. 703-714 ◽  
Author(s):  
Carmen Gonzales ◽  
Hitoshi Hotokezaka ◽  
Yoshinori Arai ◽  
Tadashi Ninomiya ◽  
Junya Tominaga ◽  
...  
Keyword(s):  
Tooth Movement ◽  
Three Dimensional ◽  
Element Model ◽  
Longitudinal Change ◽  
Micro Ct ◽  
Linear Measurements ◽  
Center Of Rotation ◽  
Ct Evaluation ◽  
Space Width

Abstract Objective: To investigate the precise longitudinal change in the periodontal ligament (PDL) space width and three-dimensional tooth movement with continuous-force magnitudes in living rats. Materials and Methods: Using nickel-titanium closed-coil springs for 28 days, 10-, 25-, 50-, and 100-g mesial force was applied to the maxillary left first molars. Micro-CT was taken in the same rat at 0, 1, 2, 3, 10, 14, and 28 days. The width of the PDL was measured in the pressure and tension sides from 0 to 3 days. Angular and linear measurements were used to evaluate molar position at day 0, 10, 14, and 28. The finite element model (FEM) was constructed to evaluate the initial stress distribution, molar displacement, and center of rotation of the molar. Results: The initial evaluation of PDL width showed no statistical differences among different force magnitudes. Tooth movement was registered 1 hour after force application and gradually increased with time. From day 10, greater tooth movement was observed when 10 g of force was applied. The FEM showed that the center of rotation in the molar is located in the center of five roots at the apical third of the molar roots. Conclusion: The rat's molar movement mainly consists of mesial tipping, extrusion of distal roots, intrusion of mesial root, palatal inclination, and mesial rotation. Although the initial tooth movement after the application of different force magnitudes until day 3 was not remarkably different, 10 g of force produced more tooth movement compared with heavier forces at day 28.

scholarly journals Evaluación in vitro de la microfiltración de Enterococcus faecalis usando cinco técnicas de obturación / In Vitro Evaluation of Enterococcus faecalis Microleakage Using Five Obturation Techniques

2016 ◽  
Vol 35 (74) ◽  
Author(s):  
Silvia Elena Aragón Matamoros ◽  
Tomás Alberto Guindos Moya ◽  
Yanina Meza González ◽  
Diana Morales Herrera ◽  
María Alejandra Perera Díaz ◽  
...  
Keyword(s):  
Enterococcus Faecalis ◽  
Color Change ◽  
Three Dimensional ◽  
Brain Heart Infusion ◽  
Phenol Red ◽  
Root Canal Filling ◽  
Gutta Percha ◽  
Single Cone ◽  
Primary Lateral

<p><strong>ABSTRACT. </strong><em><strong>Background:</strong></em> The root canal filling technique named Hybrid-Mixed Condensation, combines the advantages of cold lateral and warm vertical condensation. The ability of avoiding microbial microleakage has not been proven. <em><strong>Purpose:</strong></em> To evaluate the differences of microbial microleakage using <em>Enterococcus faecalis</em>, in canals obturated with five different techniques: lateral, warm vertical, WaveOne® single cone, Guttacore®, and Hybrid-mixed condensation. <em><strong>Methods:</strong></em> 50 single-rooted human premolars extracted for orthodontic reasons were biomechanical prepared with primary file of WaveOne® system. Teeth were divided into 5 groups using different obturation techniques: single cone with WaveOne® Primary, lateral condensation using 2 % gutta-percha cones, Guttacore® 30, warm vertical condensation using down packing in a WaveOne® Primary cone and backfill with alpha gutapercha of Beefill®, and the hybrid mixed condensation modifying the lateral condensation with heat and a backfill using Beefill®. <em>Enterococcus faecalis</em> was inoculated in the coronal third and apices were immersed in brain heart infusion broth with phenol red incubated at 37 °C for 12 weeks. Microfiltration was determined with color change and turbidity of the medium. Specimens were observed by scanning electron microscopy. <em><strong>Results:</strong></em> Only 11 teeth (22 %) were positive for leakage. 46 % with single cone, 30 % with Guttacore®, 20 % with lateral condensation, 10 % with warm vertical condensation and no microleakage was found for Hybrid-Mixed Technique over the period of 12 weeks of study. <em><strong>Conclusion:</strong></em> Hybrid Mixed Technique showed to be the most efficient technique to get three-dimensional seal and prevent microbial contamination of canals in the endodontic therapy.</p>

scholarly journals Micro-Computed Tomography (Micro-CT) Evaluation of Effects of Different Rotary Glide Path Techniques on Canal Transportation and Centering in Curved Root Canals

2019 ◽  
Vol 25 ◽  
pp. 6351-6358
Author(s):  
Gabrielė Česaitienė ◽  
Tadas Venskutonis ◽  
Vita Mačiulskienė ◽  
Vaidotas Cicėnas ◽  
Vykintas Samaitis ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Micro Ct ◽  
Micro Computed Tomography ◽  
Root Canals ◽  
Glide Path ◽  
Ct Evaluation ◽  
Canal Transportation ◽  
Curved Root Canals

scholarly journals Evaluation of Gaps or Voids Occurring in Roots Filled with Three Different Sealers

2010 ◽  
Vol 04 (02) ◽  
pp. 101-109 ◽  
Author(s):  
Melek Akman ◽  
Serhan Akman ◽  
Oznur Derinbay ◽  
Sema Belli
Keyword(s):  
In Vitro Study ◽  
Gutta Percha ◽  
Rotary Instruments ◽  
Single Cone ◽  
Ah Plus ◽  
Root Dentin ◽  
The Mean ◽  
Free Interfaces ◽  
Niti Rotary Instruments

Objectives: The purpose of this in vitro study was to evaluate gaps or voids occurring in roots filled with three different sealers.Methods: Thirty extracted human single-rooted teeth were decoronated, instrumented using NiTi rotary instruments, divided into three groups (n=10 per group) and obturated with one of the following: Epiphany with Resilon, MetaSEAL with gutta-percha or AH Plus with gutta-percha using the match-taper single-cone technique. After storage for one week in 100% humidity at 37°C, the teeth were horizontally sectioned (n=10). Photographs were taken from the coronal, median and apical parts of the roots using a stereomicroscope at 10X magnification, and the images were then transferred to a computer. The mathematical method known as the ‘Affine Transformation’ was used for the transformation of pixel coordinates to ground coordinates in the Netcad Software program. The mean areas (μm2) of the gaps between the sealer and root dentin or gutta percha/resilon and the gaps between the sealer and/or voids inside the sealer mass were measured, scored on a 0-3 scale and statistically analyzed with the Kruskal-Wallis test.Results: The mean total area of gaps or voids for each sealer was 4631.80 μm2 for the Epiphany- Resilon, 3826.80 μm2 for the MetaSEAL-gutta-percha and 31334 μm2 for the AH Plus-gutta-percha. The MetaSEAL-gutta-percha group showed more gap or void-free interfaces. No significant differences were found among the sealers in the scores for the gap areas (P<.05), and the MetaSEAL showed similar interfaces with Epiphany.Conclusions: No significant differences in the mean areas of gaps or voids were found among the tested resin-based sealers. (Eur J Dent 2010;4:101-109)

scholarly journals Influence of Sealer Placement Technique on the Quality of Root Canal Filling by Lateral Compaction or Single Cone

2014 ◽  
Vol 25 (2) ◽  
pp. 117-122 ◽  
Author(s):  
Adriana Simionatto Guinesi ◽  
Gisele Faria ◽  
Mario Tanomaru-Filho ◽  
Idomeo Bonetti-Filho
Keyword(s):  
Statistical Analysis ◽  
Root Canal ◽  
Lower Percentage ◽  
Root Canal Filling ◽  
Gutta Percha ◽  
Single Cone ◽  
Digital Microscope ◽  
Placement Technique

The aim of this study was to evaluate the influence of the sealer placement technique on the quality of root canal filling using Lateral Compaction (LC) or Single Cone (SC). In order to do that, 60 mesial roots of mandibular first molars were prepared and divided into 2 groups (n=30), according to the filling technique: LC and SC. Each group was subdivided into 3 subgroups (n=10), according to the different sealer placement methods: A: Master gutta-percha (GP) cone; B: Lentulo spiral; C: File. The roots were sectioned at 2, 4 and 6 mm from the apex and photographed with the aid of a digital microscope. Then, areas of GP, endodontic sealer and voids were measured, and these data were subjected to statistical analysis. LC technique showed no statistically difference (p>0.05) in the percentage of GP area, sealer and voids between the subgroups at any of the three levels. After use of SC, higher percentages of sealer area were found at all levels (p<0.01) when the sealer was placed with a file. At 2 mm, higher percentage of void areas (p<0.05) was observed when the cone was used, lower percentage with K-file and the lowest percentage with Lentulo. At 4 mm, cone showed higher percentage of void areas (p<0.05). At 6 mm, there were no significant differences (p>0.05) between the three methods. Considering these results, using an instrument for sealer placement was important in the SC technique to reduce voids. Regarding LC, the sealer placement techniques provided similar results.

Successful Use of MTA Fillapex as a Sealant for Feline Root Canal Therapy of 50 Canines in 37 Cats

2020 ◽  
Vol 37 (2) ◽  
pp. 77-87
Author(s):  
Susan Thorne ◽  
Norman Johnston ◽  
Vicki J. Adams
Keyword(s):  
Root Canal ◽  
Root Resorption ◽  
Endodontic Treatment ◽  
Inert Material ◽  
Root Canal Therapy ◽  
Gutta Percha ◽  
Oral Pain ◽  
Single Cone ◽  
Pulp Exposure ◽  
Periapical Disease

Intentional or unintentional pulp exposure of cat canines can lead to periapical disease, osteomyelitis, and oral pain. Root canal therapy (RCT) allows the retention of cat canines with pulp exposure by removing the infected pulp and replacing it with an inert material. This study used MTA Fillapex™ as a root canal sealant with gutta percha single cone obturation in 37 cats (50 canine teeth). Roots were classified as “successful,” “no evidence of failure (NEF),” or “failed” at 6-month radiographic reviews. Therapy was considered “successful” if a preoperative periapical lucency had healed or not formed after treatment and any preoperative external inflammatory root resorption (EIRR) had stabilized without progression. Therapy was categorized as “NEF” if a periapical lucency had remained the same or decreased in size but not completely resolved and any preoperative EIRR had stabilized without progression. “Failed” if a periapical lucency had occurred or increased in size posttreatment or if EIRR had developed or progressed posttreatment. Thirty-two canine teeth (64%) were classified as “successful,” 14 canine teeth (28%) were classified as “NEF,” and 4 canine teeth (8%) were classified as “failed”. The study concluded that RCT using MTA Fillapex as a root canal sealant is a suitable endodontic treatment for fractured cat canines, especially those that are periodontally or endodontically challenged.

scholarly journals Micro-CT evaluation of the cortical bone micro-architecture in the anterior and posterior maxilla and the maxillary sinus floor

2018 ◽  
Vol 23 (3) ◽  
pp. 1453-1459 ◽  
Author(s):  
Kristina Bertl ◽  
Danijel Domic ◽  
Lena Hirtler ◽  
Patrick Heimel ◽  
Azadeh Esfandeyari ◽  
...  
Keyword(s):  
Maxillary Sinus ◽  
Cortical Bone ◽  
Micro Ct ◽  
Posterior Maxilla ◽  
Ct Evaluation ◽  
Maxillary Sinus Floor ◽  
Sinus Floor
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