scholarly journals Physiotherapeutic methods of processing root channels with application of light exposure in dentistry

2020 ◽  
Vol 18 (3) ◽  
pp. 10-14
Author(s):  
A. V. Larinskaya ◽  
A. V. Yurkevich ◽  
I. D. Ushnitsky ◽  
V. F. Mikhalchenko ◽  
A. V. Mikhalchenko ◽  
...  
Keyword(s):  
Root Canal ◽  
Beam Energy ◽  
Laser Light ◽  
Light Exposure ◽  
Canal System ◽  
Human Teeth ◽  
Dentinal Tubules ◽  
Main Research ◽  
Root Canal System ◽  
And Diffusion

Aim. Substantiate the use of light exposure as physiotherapeutic methods of root canal treatment.Materials and methods. For the study, 93 human teeth were taken, all teeth were divided into 3 groups of 31 samples. Optical microscopy was used as the main research method.Results. The effect of laser radiation on biological structures depends on the wavelength of the energy emitted by the laser, the energy density of the beam, and the temporal characteristics of the beam energy. The processes that can occur in this case are reflection, absorption, scattering and transmission. The interaction of laser light and tissues occurs with optical proximity between them. This interaction is specific and selective, based on absorption and diffusion. The smaller the approach, the more light will be reflected or transmitted.Conclusions. Currently, in endodontics, diode lasers are the best systems for disinfecting the root canal system due to their ability to penetrate the dentinal tubules. The optical proximity of their wavelengths to bacteria leads to the destruction of the latter due to the photo-thermal effect.

scholarly journals Histological Evaluation of Multisonic Technology for Debridement of Vital and Necrotic Pulp Tissues from Human Molar Teeth. An Observational Study

2021 ◽  
Vol 11 (22) ◽  
pp. 11002
Author(s):  
David E. Jaramillo ◽  
Alberto R. Arriola
Keyword(s):  
Observational Study ◽  
Root Canal ◽  
Histological Evaluation ◽  
Canal System ◽  
Pulp Tissue ◽  
Dentinal Tubules ◽  
Mandibular Molar ◽  
Molar Teeth ◽  
Root Canal System ◽  
Irreversible Pulpitis

Background: This study evaluated the efficacy of a multisonic technology for the debridement of vital and necrotic pulp tissues in freshly extracted human mandibular molar teeth. Methods: Twelve teeth with a diagnosis of symptomatic irreversible pulpitis (SIP) and twelve teeth with a diagnosis of pulp necrosis with symptomatic apical periodontitis (SAP) were extracted. The GentleWave® procedure was performed on 10 teeth from each group. Four non-treated teeth served as histologic controls. Histological consecutive 5 µm sections were obtained from the apical, middle, and coronal portion of the canals. The canals were evaluated for the presence of pulpal debris and bacteria. Results: In nine out of the ten specimens with SIP, no pulpal debris was detected in any portion of the canals. In the necrotic pulp group, eight out of the ten specimens had no detectable pulpal debris in any portion of the canal spaces. No bacteria were detected in the main canals, isthmuses, or lateral canals, but were detected deep within the dentinal tubules in 10 specimens. Conclusions: This study demonstrated that the multisonic technology was effective at removing vital and necrotic pulp tissue as well as bacteria from the root canal system, including inaccessible areas.

scholarly journals Sealer penetration and marginal permeability after apicoectomy varying retrocavity preparation and retrofilling material

2006 ◽  
Vol 17 (4) ◽  
pp. 323-327 ◽  
Author(s):  
Renata Winik ◽  
Ângela Toshie Araki ◽  
José Augusto Alves Negrão ◽  
Marina Stella Bello-Silva ◽  
José Luiz Lage-Marques
Keyword(s):  
Rhodamine B ◽  
Root Canal ◽  
Sem Analysis ◽  
Canal System ◽  
Dentinal Tubules ◽  
Lower Permeability ◽  
Periapical Healing ◽  
Root Canal System ◽  
Rhodamine B Dye ◽  
Negative Controls

Apicoectomy failure is generally related to inappropriate marginal sealing of the retrocavity, which allows percolation of microorganisms and their products from root canal system to periapex. This study evaluated tubular penetration of canal sealers and marginal permeability after retrocavity irradiation with Er;Cr:YSGG laser and retrofilling with MTA or cyanoacrylate. Twenty-two single-rooted teeth were decoronated and endodontically treated, their apical 3 mm were resected and the root ends were retroprepared with a low-speed bur. Twenty roots were randomly assigned to 4 groups (n=5): GI and GII - retrofilling with MTA and cyanoacrylate, respectively; GIII and GIV - retrocavity irradiation with Er;Cr:YSGG laser (2.78 µm, 4 W, 20 Hz, 70.8 J/cm²) and retrofilling with MTA and cyanoacrylate, respectively. The remaining 2 roots served as positive and negative controls. The analysis of rhodamine B dye infiltration (p=0.05) demonstrated that laser irradiation and MTA retrofilling presented significantly higher permeability rates (p<0.05). Retrofilling with cyanoacrylate showed significantly lower permeability, either when laser was used or not on retrocavity. SEM analysis depicted more cyanoacrylate penetration through dentinal tubules when compared to MTA, suggesting a more efficient marginal sealing. Based on these results, it may be concluded that cyanoacrylate provided a less permeable retrofilling regardless of the retropreparation method, suggesting a more favorable condition to the establishment of the periapical healing.

Root CanalIrrigants in Pediatric Dentistry:A Literature Review & Update

2019 ◽  
Vol 14 (02) ◽  
pp. 144-168
Author(s):  
Vaibhav Kotecha
Keyword(s):  
Root Canal ◽  
Primary Teeth ◽  
Canal System ◽  
Specific Sequence ◽  
Dentinal Tubules ◽  
Root Canal Irrigants ◽  
Bacterial Contaminants ◽  
Root Canal System ◽  
Necrotic Debris ◽  
The Ideal

Successful root canal treatment is dependent on the removal of microorganisms from he pulp and other anatomical irregularities of the root canal system. However, complete elimination of bacterial contaminants as well as necrotic debris require adjunctive use of root canal irrigants along with mechanical instrumentation. Irrigants can augment mechanical debridement by flushing out debris, dissolving tissue, and disinfecting the root canal system.Chemical debridement is especially needed for primary teeth with complex internal anatomy and zones inaccessible to debridements, such as accessorycanals, ramifications, and dentinal tubules that might be missed by instrumentation.None of the available irrigating solutions alone provides all the ideal requirements. Studies have shown that a combination of two or more irrigating solutions in a specific sequence will help to achieve optimal irrigation

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 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 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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