scholarly journals Effects of Both Fiber Post/Core Resin Construction System and Root Canal Sealer on the Material Interface in Deep Areas of Root Canal

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 982
Author(s):  
Hiroki Miura ◽  
Shinji Yoshii ◽  
Masataka Fujimoto ◽  
Ayako Washio ◽  
Takahiko Morotomi ◽  
...  
Keyword(s):  
Root Canal ◽  
Light Transmission ◽  
The Other ◽  
Light Irradiation ◽  
Root Canal Sealer ◽  
Fiber Post ◽  
Material Interface ◽  
Fiber Posts ◽  
Root Canal Sealers ◽  
Construction System

This study aimed to examine the resin polymerization of a fiber post/core resin construction system and the interface between resin and root canal sealers, which are important for root canal sealing. We used the i-TFC Luminus fiber post and i-TFC Luminus LC flow (i-TFC-L), the GC fiber post and Unifil Core EM (GCF), and the FiberKor post and Build-It FR (FKP) as core construction systems, and Nishika Canal Sealer BG (CS-BG), Metaseal Soft (META), and Nishika Canal Sealer EN (CS-EN) as sealers. The light transmission of fiber posts (n = 5), the polymerization of core resin (n = 5), and the adhesion between the sealer and core resin (n = 10) were evaluated. The i-TFC Luminus fiber post light transmission was significantly higher than that of other posts. Without shielding, i-TFC-L showed a significantly greater amount of polymerized resin than the other systems. With shielding, although i-TFC-L showed a significantly greater amount of polymerized resin immediately after light irradiation, polymerized resin was significantly greater in GCF and FKP after 10 min. All systems adhered to CS-BG and META but not to CS-EN. These results indicate that resin polymerization in the cavity differs among fiber post/core resin construction systems and that the adhesion of the resin and sealer depends on the property of the sealer.

Light-transmitting Ability of Marketed Fiber Posts

2008 ◽  
Vol 87 (12) ◽  
pp. 1122-1126 ◽  
Author(s):  
C. Goracci ◽  
G. Corciolani ◽  
A. Vichi ◽  
M. Ferrari
Keyword(s):  
Linear Regression ◽  
Light Intensity ◽  
Light Transmission ◽  
The Other ◽  
Light Activation ◽  
Fiber Post ◽  
Fiber Posts ◽  
Significant Difference ◽  
Curing Agents ◽  
Photo Curing

If proper polymerization of resin-based cements is to be achieved for fiber post luting, light activation is needed for photo-curing agents, recommended for self-curing materials. The study was aimed at verifying whether the light-transmitting ability of marketed fiber posts reflected the manufacturers’ claims for translucency. Ten posts per type were light-irradiated with a curing unit. Spectrophotometric measurements of the amount of photons reaching different post levels were taken. Data were statistically analyzed (linear regression, two-way ANOVA; α = 0.05). No light transmission was recorded through FibreKleer and Tech21 X-OP. For the other posts, light intensity decreased from coronal to apical and rose again at the apical tip, where it peaked for GC Fiber Post, Macrolock Illusion Post, and Radix Fiber Post. Light transmission was significantly higher at the coronal level. A statistically significant difference in translucency was found for Dentin Post X and FRC Postec Plus in comparison with Reforpost, FibreKleer, Tech21 X-OP, and Composipost.

scholarly journals Evaluation of apical microleakage of teeth sealed with four different root canal sealers

2006 ◽  
Vol 14 (5) ◽  
pp. 341-345 ◽  
Author(s):  
Fábio Dultra ◽  
Juliana Machado Barroso ◽  
Laise Daniela Carrasco ◽  
Alexandre Capelli ◽  
Danilo M. Zanello Guerisoli ◽  
...  
Keyword(s):  
Root Canal ◽  
Methyl Salicylate ◽  
The Other ◽  
Root Canal Sealer ◽  
Root Canals ◽  
Dye Penetration ◽  
Gutta Percha ◽  
India Ink ◽  
Ah Plus ◽  
Root Canal Sealers

OBJECTIVES: to compare the apical sealing ability of four root canal sealers. MATERIAL AND METHODS: forty extracted human maxillary canines were instrumented 1 mm short of the anatomical apex and randomly assigned to four groups (n=10), according to the root canal sealer used for obturation: Endofill, AH Plus, EndoREZ and Epiphany. Root canals were obturated with gutta-percha points, except for the Epiphany group, in which resin points (Resilon) were used. The teeth were immersed in India ink for seven days and clarified using methyl salicylate. The extent of apical dye penetration was measured with a measuroscope in all aspects of the canal. RESULTS: AH Plus (0.02 mm ± 0.07), Epiphany (0.00 mm ± 0.00) and EndoREZ (0.32 mm ± 0.62) did not differ statistically to each other (p>0.01). EndoFill presented the highest dye penetration mean (0.83 mm ± 0.73) and was statistically different from the other sealers (p<0.01). CONCLUSION: the resin-based root canal sealers presented lesser apical microleakage than the zinc oxide and eugenol based sealer. No statistical differences were observed among resin based sealers.

scholarly journals Evaluation of the radiopacity of root canal sealers by digitization of radiographic images

2004 ◽  
Vol 12 (4) ◽  
pp. 355-357 ◽  
Author(s):  
Juliane Maria Guerreiro Tanomaru ◽  
Luciana Cezare ◽  
Marcelo Gonçalves ◽  
Mário Tanomaru Filho
Keyword(s):  
Zinc Oxide ◽  
Calcium Hydroxide ◽  
Root Canal ◽  
The Other ◽  
Root Canal Sealer ◽  
Radiographic Images ◽  
Ah Plus ◽  
Root Canal Sealers

The aim of this study was to evaluate the radiopacity of a zinc oxide and eugenol-based (Endofill), a calcium hydroxide-based (Sealapex), two resin-based (Sealer 26 and AH Plus), and a silicone-based root canal sealer (Roeko Seal). Specimens, measuring 10mm in diameter and 1mm in thickness, were radiographed simultaneously with an aluminum step wedge using occlusal films, according to ISO 6876/2001 standards. Radiographs were digitized, and the radiopacity of sealers was compared to the different thicknesses of the aluminum step wedge, using the VIXWIN 2000 software. Results demonstrated that AH Plus was the most radiopaque sealer, while Sealapex was the least radiopaque (p<0.05). Roeko Seal, Endofill and Sealer 26 presented intermediate radiopacity values. Sealapex presented less radiopacity than the other types of root canal sealers.

The Evaluation of Cytotoxicity and Histological Response of Periradicular Tissues of a New Injectable Root Canal Sealer

2007 ◽  
Vol 330-332 ◽  
pp. 1357-1360
Author(s):  
Li Zhao Teng ◽  
Hong Song Fan ◽  
Xing Dong Zhang
Keyword(s):  
Zinc Oxide ◽  
Root Canal ◽  
The Other ◽  
Histological Response ◽  
Root Canal Sealer ◽  
X Ray ◽  
Root Canals ◽  
Zinc Oxide Eugenol ◽  
Mtt Assays

The purpose of this study was to evaluate biocompatibility of a new injectable root canal sealer. The cytotoxicity of zinc oxide-eugenol cements, CCQ and the new injectable root canal sealer were assessed by the MTT assays. These materials were filled into the root canals of the dog. One month later, the dog was sacrificed and the X-ray photos were taken. The histological response was observed through the microscope. The results show the new injectable root canal sealer showed better biocompatibility than the other two materials.

scholarly journals Adhesive Durability Inside the Root Canal Using Self-adhesive Resin Cements for Luting Fiber Posts

2017 ◽  
Vol 42 (6) ◽  
pp. E167-E176 ◽  
Author(s):  
K Bitter ◽  
A Maletic ◽  
K Neumann ◽  
L Breschi ◽  
G Sterzenbach ◽  
...  
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Fiber Post ◽  
Resin Cements ◽  
Adhesive Resin ◽  
Fiber Posts ◽  
Silver Deposits ◽  
Bond Strengths ◽  
One Year ◽  
Push Out

SUMMARY Objectives: The aim of the study was to investigate the effects of various self-adhesive resin cements on the push-out bond strengths and nanoleakage expression at the luting interfaces of fiber posts immediately and after one year of aging. Methods and Materials: One hundred forty-four extracted human anterior teeth were endodontically treated. After post space preparation, fiber posts were luted using five commercially available self-adhesive resin (SAR) cements and a core build-up material applied with a self-etch adhesive (BF: Bifix SE/Rebilda Post, VOCO; CSA: Clearfil SA Cement/Rely X Fiber Post, 3M ESPE; RX: RelyX Unicem 2/Rely X Fiber Post, 3M ESPE; SPC: Speed Cem/FRC Postec, Ivoclar Vivadent; SMC: Smart Cem/X Post, Dentsply; RB: Rebilda DC-Futurabond/Rebilda Post; n=22). For each group, half of the specimens were subjected to thermocycling (TC) (5°C-55°C, 10,000 cycles) and stored humid for one year at 37°C. Push-out bond strength data of six slices (thickness 1 mm) per root and nanoleakage expression of representative specimens were evaluated after 24 hours (baseline) and after TC and storage for one year (aging), respectively. Results: Bond strength differed significantly among resin cements (p&lt;0.0005) and the location inside the root canal (p&lt;0.0005), but not by aging (p=0.390; repeated-measures analysis of variance). SMC (14.6±5.8 MPa) and RX (14.1±6.8 MPa) revealed significantly higher bond strength compared to BF (10.6±5.4 MPa) and RB (10.0±4.6 MPa) but differed not significantly from SPC (12.8±4.8) MPa; CSA (6.1±4.6 MPa) revealed significantly lower bond strength compared to all other investigated materials (p&lt;0.05; Tukey Honestly Significantly Different). Qualitative nanoleakage analysis revealed more silver deposits at the interface in all groups after aging. For CSA, a large amount of silver deposits inside the cement was also observed at baseline and after aging. Conclusions: Fiber post luting using SAR cements demonstrated reliable bond strengths. Product-specific differences and initial degradation effects could be demonstrated.

scholarly journals Właściwości alkalizujące wybranych krzemianowo-wapniowych uszczelniaczy kanałowych. Badanie in vitro

2018 ◽  
Vol 64 (4) ◽  
Author(s):  
Przemysław Reszka ◽  
Łukasz Kucharski ◽  
Adam Klimowicz ◽  
Mariusz Lipski
Keyword(s):  
Root Canal ◽  
Calcium Silicate ◽  
In Vitro Study ◽  
Root Canal Sealer ◽  
Ph Values ◽  
Water Ph ◽  
Ah Plus ◽  
Ph Level ◽  
Root Canal Sealers

ABSTRACTIntroduction: The aim of this in vitro study was to assess the pH values of selected calcium-silicate root canal sealers in comparison with AH Plus resin-based root canal sealer.Materials and methods: Six root canal sealers were included in this study: BioRoot RCS (Septodont, France), GuttaFlow bioseal (Coltėne/Whaledent, Switzerland), MTA Fillapex (Angelus, Brazil), Total Fill BC Sealer (FKG, Switzerland), Well-Root ST (Vericom, Korea) and AH Plus (Dentsply, DeTrey, Germany). Materials samples (n = 6) were placed in dishes and immersed in 10 mL of distilled water (pH = 6.8). After 1, 3, 24, 48, 72, 168, 336 and 504 hrs, water pH was determined with a pH meter calibrated with a solution of known pH. Data were statistically analyzed using Student-t test (p < 0.05).Results: There were differences in the water pH between the materials tested. The highest water pHs were exhibited by Total Fill BC Sealer, Well-Root ST and BioRoot RCS (pH ~12), followed by GuttaFlow bioseal (pH ~10.5) and MTA Fillapex (pH ~9). The lowest pH was shown by AH Plus (pH ~8).Conclusions: All calcium-silicate root canal sealers studied are able to elevate the pH level, which could have biological and antimicrobial effects. The AH Plus root canal sealer has poor alkalizing properties.

scholarly journals Effect of ultrasonic cleaning on the bond strength of fiber posts in oval canals filled with a premixed bioceramic root canal sealer

2020 ◽  
Vol 45 (2) ◽  
Author(s):  
Fernando Peña Bengoa ◽  
Maria Consuelo Magasich Arze ◽  
Cristobal Macchiavello Noguera ◽  
Luiz Felipe Nunes Moreira ◽  
Augusto Shoji Kato ◽  
...  
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Root Canal Sealer ◽  
Ultrasonic Cleaning ◽  
Fiber Posts

scholarly journals COMPARATIVE RADIOGRAPHIC ASSESSMENT OF A NEW BIOCERAMIC-BASED ROOT CANAL SEALER

2017 ◽  
Vol 90 (2) ◽  
pp. 226-230 ◽  
Author(s):  
Dana Hrab ◽  
Andrea Maria Chisnoiu ◽  
Mindra Eugenia Badea ◽  
Marioara Moldovan ◽  
Radu Marcel Chisnoiu
Keyword(s):  
Statistical Analysis ◽  
Computer Analysis ◽  
Root Canal ◽  
Filling Material ◽  
Root Canal Sealer ◽  
Radiographic Assessment ◽  
Equivalent Thickness ◽  
Analysis Of The Images ◽  
Root Canal Sealers ◽  
Disk Sample

Background and aims. The aim of this study was to assess the radiopacity of two bioceramic-based root canal sealers, the conventional TotalFill BC sealer (FKG Dentaire Switzerland) and a new experimental filling material developed in collaboration with 'Raluca Ripan' Institute for Research in Chemistry, Cluj-Napoca. Methods. Five disc samples were prepared using both materials (10 mm diameter x 1 mm thickness), being subjected to digital radiography together with aluminum step wedges (1 to 12 mm in thickness), in accordance with ISO 6876: 2012. Radiopacity was determined by the computer analysis of the images obtained. Four different areas were selected for each sample, corresponding to a disk-sample quadrant. Statistical analysis was performed using ANOVA.Results. Both materials showed a radiopacity that was 3 mm greater than the equivalent thickness of aluminum. Total Fill BC showed greater radiopacity than the experimental material, but the differences were not statistically significant. Conclusions. Both materials comply with ISO 6876: 2012 recommendations on minimum radiopacity.

scholarly journals Fracture Resistance of Simulated Immature Teeth after Different Intra-radicular Treatments

2015 ◽  
Vol 26 (3) ◽  
pp. 211-215 ◽  
Author(s):  
Gustavo Sivieri-Araujo ◽  
Mario Tanomaru-Filho ◽  
Juliane Maria Guerreiro-Tanomaru ◽  
Eduardo Antunes Bortoluzzi ◽  
Érica Gouveia Jorge ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Fracture Strength ◽  
Root Canal ◽  
Fracture Resistance ◽  
Testing Machine ◽  
Fiber Post ◽  
Immature Teeth ◽  
Fiber Posts ◽  
Glass Fiber Posts ◽  
Glass Fiber Post

The aim of this study was to evaluate the fracture resistance of simulated immature teeth after different intra-radicular treatments. Crowns and roots of bovine incisors were cut transversally and removed to simulate immature teeth. Root canal preparation and flaring were performed using a bur in crown-apex and apex-crown direction. The samples were distributed into 5 groups (n=10): Positive control (PoC) - no root canal flaring or filling; Negative control (NeC) - teeth were sectioned and their root canals were flared; Direct anatomical glass fiber post (RaP) - #2 Reforpost main glass fiber post relined with composite resin; Double tapered conical glass fiber posts (ExP) - #3 Exacto glass fiber post; and #2 Reforpost main glass fiber + Reforpin accessory glass fiber posts (RrP). In RaP, ExP and RrP, 4.0-mm apical plugs were done with MTA Angelus. The specimens were embedded in polystyrene resin inside cylinders and the periodontal ligament was simulated with a polyether-based impression material. The specimens were submitted to compressive fracture strength test (0.5 mm/min at 135° relative to the long axis of the tooth) in a servo-hydraulic mechanical testing machine MTS 810. Data were subjected to one-way ANOVA and Dunnett's C or Tukey's tests (α=0.05). The control groups (PoC and NeC) showed lower fracture strength than the experimental groups. NeC presented the lowest resistance and ExP presented the highest resistance among the experimental groups. The flaring procedures produced a detrimental effect on the fracture resistance of the bovine teeth. Glass fiber intra-radicular posts increased significantly the fracture resistance of simulated immature teeth.

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