scholarly journals Analysis of the Morpho-Geometrical Changes of the Root Canal System Produced by TF Adaptive vs. BioRace: A Micro-Computed Tomography Study

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 531
Author(s):  
Loai Alsofi ◽  
Muhannad Al Harbi ◽  
Martin Stauber ◽  
Khaled Balto
Keyword(s):  
Surface Area ◽  
Root Canal ◽  
Type I ◽  
Structure Model ◽  
Canal Surface ◽  
Canal System ◽  
Structure Model Index ◽  
Continuous Rotation ◽  
Before And After ◽  
Root Canal System

We aimed to analyze the morpho-geometric changes of the root canal system created by two rotary systems (TF Adaptive and BioRace) using micro-CT technology. Two concepts of rotary file system kinematics, continuous rotation and adaptive kinematics, were used in root canal preparation. Twenty mandibular molars (n = 20) were selected with the following criteria: the teeth have mesial roots with a single and continuous isthmus connecting the mesiobuccal and mesiolingual canals (Vertucci’s Type I configuration) and distal roots with independent canals. Teeth were scanned at a resolution of 14 μm. Canals were divided equally into two groups and then enlarged sequentially using the BioRace system and TF Adaptive system according to manufacturer protocol. Co-registered images, before and after preparation, were evaluated for morphometric measurements of canal surface area, volume, structure model index, thickness, straightening, and un-instrumented surface area. Before and after preparation, data were statistically analyzed using a paired sample t-test. After preparation, data were analyzed using an unpaired sample test. The preparation by both systems significantly changed canal surface area, volume, structure model index, and thickness in both systems. There were no significant differences between instrument types with respect to these parameters (p > 0.05). TF Adaptive was associated with less straightening (8% compared with 17% for BioRace in the mesial canal, p > 0.05). Both instrumentation systems produced canal preparations with adequate geometrical changes. BioRace straightened the mesial canals more than TF Adaptive.

scholarly journals Micro-tomographic characterization of the root and canal system morphology of mandibular first premolars in a Chilean population

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Alfredo Sierra-Cristancho ◽  
Luis González-Osuna ◽  
Daniela Poblete ◽  
Emilio A. Cafferata ◽  
Paola Carvajal ◽  
...  
Keyword(s):  
Root Canal ◽  
Multiple Root ◽  
Root Anatomy ◽  
Type I ◽  
Micro Computed Tomography ◽  
Canal System ◽  
Root Canals ◽  
Wide Range ◽  
Root Canal System ◽  
Chilean Population

AbstractThis study aimed to analyze the root anatomy and root canal system morphology of mandibular first premolars in a Chilean population. 186 teeth were scanned using micro-computed tomography and reconstructed three-dimensionally. The root canal system morphology was classified using both Vertucci’s and Ahmed’s criteria. The radicular grooves were categorized using the ASUDAS system, and the presence of Tomes’ anomalous root was associated with Ahmed’s score. A single root canal was identified in 65.05% of teeth, being configuration type I according to Vertucci’s criteria and code 1MP1 according to Ahmed’s criteria. Radicular grooves were observed in 39.25% of teeth. The ASUDAS scores for radicular grooves were 60.75%, 13.98%, 12.36%, 10.22%, 2.15%, and 0.54%, from grade 0 to grade 5, respectively. The presence of Tomes’ anomalous root was identified only in teeth with multiple root canals, and it was more frequently associated with code 1MP1–2 of Ahmed’s criteria. The root canal system morphology of mandibular first premolars showed a wide range of anatomical variations in the Chilean population. Teeth with multiple root canals had a higher incidence of radicular grooves, which were closely related to more complex internal anatomy. Only teeth with multiple root canals presented Tomes’ anomalous root.

scholarly journals Internal Lower Incisor Morphology revealed by Computerized Microtomography.

2020 ◽  
Vol 33 (1) ◽  
pp. 33-37
Author(s):  
Carolina Lima ◽  
Lorena Magalhães ◽  
Marília Marceliano-Alves ◽  
Patrícia de Oliveira ◽  
Mariane Lacerda
Keyword(s):  
Surface Area ◽  
Root Canal ◽  
Anatomical Variations ◽  
Type I ◽  
Structure Model ◽  
Micro Ct ◽  
Lower Incisor ◽  
Canal Diameter ◽  
High Degree ◽  
Lower Incisors

This study evaluated the internal morphology of lower incisors using computerized microtomography (micro-CT) images. Eighty-nine lower incisors were scanned by micro-CT and reconstructed with NRecon software. 2D parameters (perimeter, root length, circularity and canal diameter) and 3D parameters (volume, surface area and structure model index) were evaluated with CTAn and CTVol software. The results are presented descriptively. It was found that 89.9% of the canals had a single main root canal (type I), followed by type II (6.7%) and III (3.4%), while 5.6% of the specimens presented lateral canals and 1.1% had an apical delta. Mean volume and surface area were 31.80mm³ and 90.58mm², respectively. The most prevalent shape of the root canal at CEJ level was circular (41.6%) and 1mm from the apex, 73% of the samples were classified as oval. Lower incisors with internal anatomical variations may offer a high degree of technical complexity and may result in treatment failure.

scholarly journals Variations in the Root Form and Root Canal Morphology of Permanent Mandibular First Molars in a Sri Lankan Population

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Roshan Peiris ◽  
Uthpala Malwatte ◽  
Janak Abayakoon ◽  
Anuradha Wettasinghe
Keyword(s):  
Root Canal ◽  
Population Sample ◽  
Type I ◽  
Sri Lankan ◽  
Canal System ◽  
Root Canals ◽  
Type Iv ◽  
Root Canal Morphology ◽  
Root Canal System ◽  
Canal Morphology

The present study was conducted to determine the number of roots and morphology of the root canal system of permanent mandibular first molars (M1) in a Sri Lankan population. Sample of 529 M1 teeth was used. The number of roots was examined and the lengths of the mesial and distal roots were measured to the nearest 0.01 mm. Vacuum injection protocol was used to inject China ink into the root canal system, making it transparent. Root canal morphology was recorded using Vertucci’s classification. Presence of furcation canals, position of lateral canals, intercanal communications, level of bifurcation, and convergence of the root canal system were recorded. M1 showed three roots in 4.1% of the sample. Commonest root canal morphology of the mesial root was type IV and the distal root was type I. The level of bifurcation of the root canals was commonly observed in the cervical one-third of the root while convergence was observed in the apical one-third in both roots. Prevalence of three rooted mandibular first molars is less than 5%. Mesial root showed the most variable canal morphology. Prevalence of furcation canals was 1.5% while that of middle mesial canals was 0.2%.

scholarly journals Evaluation of Palatal Furcation Groove and Root Canal Anatomy of Maxillary First Premolar: A CBCT and Micro-CT Study

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Xiaojing Liu ◽  
Meili Gao ◽  
Qingxia Bai ◽  
Jianping Ruan ◽  
Qun Lu
Keyword(s):  
Root Canal ◽  
Cone Beam ◽  
Type I ◽  
Micro Ct ◽  
Canal System ◽  
Wall Width ◽  
Type Iv ◽  
Root Canal Morphology ◽  
Root Canal System ◽  
The Mean

Objectives. This study is aimed at investigating the root and root canal morphology by cone beam computed tomography (CBCT) and palatal furcation groove of the buccal root by microcomputed tomography (micro-CT) of maxillary first premolars in a Chinese subpopulation. Methods. This study assessed CBCT images of 440 patients aged 14-80 years. Based on Vertucci’s classification, the number of roots and the canal configuration were determined. Forty-eight maxillary first premolars with furcation grooves were analyzed by micro-CT in patients aged 18-25 years. Results. Based on the CBCT assay, 70.22% and 29.32% of maxillary first premolars were 1 root and 2 roots, respectively. The configuration indicated statistical difference ( P < 0.05 ) between male and female patients. The most common canal type was type IV and was found in 44.32% of cases, followed by type I in 27.84%, and then type II in 20.57%. Root bifurcations had 40.13% prevalence which was distributed more in the middle third than in the cervical and the apical third. For the micro-CT study, 95.83% of the furcation groove configuration was found in the bifurcated maxillary first premolars. The length varied from 1.02 to 7.63 mm. The mean depth of this groove was 0.57 mm in the root coronal, 0.47 mm in the root middle, and 0.22 mm in the root apical level. Palatal dentin width was smaller than 1 mm. Conclusion. The anatomy of the root and root canal system and the irregular wall width of maxillary first premolars with furcation grooves may help dentists to understand the anatomical morphology and improve the outcomes of endodontic treatment.

scholarly journals Management of a non-vital immature tooth using MTA as an apical plug: Two case reports

2015 ◽  
Vol 5 (1) ◽  
pp. 41-46
Author(s):  
S Wagle ◽  
N Joshi ◽  
K Prajapati
Keyword(s):  
Root Canal ◽  
Case Reports ◽  
Mineral Trioxide Aggregate ◽  
Canal System ◽  
Immature Teeth ◽  
Open Apices ◽  
Root Canal System

MTA appears to be a valid option for apexification with its main advantage being, the speed at which the treatment can be completed. A major problem in performing endodontics in immature teeth with necrotic pulp and wide open apices is obtaining an optimal seal of the root-canal system. Mineral Trioxide Aggregate (MTA), has been proposed as a potential material to create an apical plug at the end of the root-canal system, thus preventing the extrusion of filling materials.DOI: http://dx.doi.org/10.3126/jcmc.v5i1.12574

Efficacy of ultrasonic and Er:YAG laser activated EDTA irrigation in removing bacteria from ex vivo root canal system

2018 ◽  
Vol 2 (4) ◽  
pp. 265-269
Author(s):  
Sharonit Sahar-Helft ◽  
Ayşe Sena Kabaş Sarp ◽  
Murat Gulsoy ◽  
Idan Redenski ◽  
Adam Stabholtz ◽  
...  
Keyword(s):  
Root Canal ◽  
Er:Yag Laser ◽  
Ex Vivo ◽  
Canal System ◽  
Root Canal System

scholarly journals Murine Experimental Root Canal Infection: Cytokine Expression in Response to F. nucleatum and E. faecalis

2016 ◽  
Vol 27 (5) ◽  
pp. 578-583 ◽  
Author(s):  
Andressa Lamari Reis ◽  
◽  
Ricardo Reis Oliveira ◽  
Warley Luciano Fonseca Tavares ◽  
Thamyris Duque Silva Saldanha ◽  
...  
Keyword(s):  
Gene Expression ◽  
Statistical Analysis ◽  
Enterococcus Faecalis ◽  
Experimental Infection ◽  
Root Canal ◽  
Fusobacterium Nucleatum ◽  
High Expression ◽  
Canal System ◽  
Independent Mechanism ◽  
Root Canal System

Abstract The aim of this study was to evaluate the gene expression of proinflammatory (RANKL, TNF-a and IFN-g) and regulatory (TGF-b and IL-10) cytokines as reaction to experimental infection by mono or bi-association of Fusobacterium nucleatum (ATCC 10953) and Enterococcus faecalis (ATCC 19433). F. nucleatum and E. faecalis, either in mono- or bi-association were inoculated into the root canal system (RCS) of Balb/c mice. Animals were sacrificed at 10 and 20 days after infection and periapical tissues surrounding the root were collected. The mRNA expression of the cytokines RANKL, TNF-a, IFN- g, TGF-b and IL-10 was assessed using real-time PCR. The Kruskal-Wallis test was used for statistical analysis. F. nucleatum mono-infection induced high expression of RANKL and TNF-a, while its modulation was due to IL-10. High expression of IFN-g at day 20 was up-regulated by E. faecalis and RANKL; TNF-a was up-regulated by an independent mechanism via IL-10 and TGF-b. Bi-association (F. nucleatum and E. faecalis) stimulated high expression of RANKL, TNF-a and IFN-g, which seemed to be modulated by TGF-b 20 days later. The gene expression of proinflammatory cytokines was more prominent in the earlier periods of the experimental periapical infection, which concomitantly decreased in the later period. This expression may be regulated by IL-10 and TGF-b in an infection-specific condition

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