scholarly journals Συμβολή εις την μελέτην της αξίας ενιών εμφρακτικών υλικών των ριζικών σωληνών δια ραδιενεργών ισοτόπων (S35)

1967 ◽  
Author(s):  
Ζαχαρίας Μαντζαβίνος
Keyword(s):  
Root Canal ◽  
Multiple Point ◽  
Multiple Points ◽  
Single Root ◽  
Gutta Percha ◽  
Silver Point ◽  
Autoradiographic Technique ◽  
Root Canal Sealers

The present study was performed in order to evaluate, by the autoradiographic technique the sealing properties of three root canal sealers, combined with gutta - percha and silver points, in vitro. A total of one hundred and five extracted human, single root teeth were used and divided into five groups according to the filling combinations tested. The teeth were filled, using two techniques, of the single and multiple points. Autoradiographies, using S35, in all instances, were performed and the results obtained were compared with the respective dental radiograms The obtained results lead to the following conclusions: 1. Silver and gutta - percha points may be always combined with sealers. Otherwise the root canal is not adequately sealed. 2. A gutta - percha point, without sealer, produced a superior filling to silver point. 3. It seems possible to obtain a complete obturation of the rootcanal with the combination of gutta - percha and Grosman’s Sealer using the multiple - point technique. 4. It follows in effectivness, the combination of silver point and Grossman’s sealer.5. The combination of gutta - percha point with Zinc - oxide eugenol sealer and chloropercha are the least efficient. 6. Finally it must be stressed that since the conditions of the present study do not correspond exactly to those encountered in vivo, extrapolation of the results obtained, to man has to be performed with caution.

scholarly journals Comparative evaluation of sealing ability of different obturation materials

2010 ◽  
Vol 138 (5-6) ◽  
pp. 287-291 ◽  
Author(s):  
Irena Melih ◽  
Ankica Jakovljevic ◽  
Milica Popovic ◽  
Dragana Pesic
Keyword(s):  
Root Canal ◽  
In Vitro Study ◽  
Control Group ◽  
Root Canal Filling ◽  
Single Root ◽  
Dye Penetration ◽  
Filling Materials ◽  
Gutta Percha ◽  
Ah Plus

Introduction Root canal filling materials are intended to prevent microleakage and passing of microorganisms and their toxins along the root canal space and into the periradicular tissues. Objective Objective of this in vitro study was to evaluate and compare apical leakage of root canals obturated using a modified warm vertical condensation technique and different materials. Methods Sixty-five extracted single-root teeth were prepared according to the crown-down/ step-back technique. Each canal was rinsed with 3% NaOCl during and after the preparation. The teeth were divided into 3 groups. Every group was obturated by the same technique, but with different materials: RealSeal system (SybronEndo), gutta-percha with AH Plus (Dentsply Maillefer) and gutta-percha with Acroseal sealer (Septodont). The remaining 20 teeth were in the control group. The teeth were immersed in 1% methylene blue for 72 hours. After that period, the roots were split longitudinally, and dye penetration was measured using a stereomicroscope. Results Dye penetration occurred in all groups. The least dye penetration occurred in the RealSeal group (0.33?}0.29 mm), while the highest dye penetration occurred in the Acroseal group (1.11?}0.52 mm). According to the Student's t-test, Acroseal showed significantly more leakage (p<0.001) than RealSeal and AH Plus materials. The microleakage of RealSeal system was not significantly different (p>0.05) from that of AH Plus sealer with gutta-percha. Conclusion The results suggested that new material Resilon (RealSeal) and conventional combination AH Plus with gutta-percha had the least apical dye penetration and provided the best sealing.

scholarly journals Biocompatibility of Root Canal Sealers: A Systematic Review of In Vitro and In Vivo Studies

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4113 ◽  
Author(s):  
Diogo Afonso Fonseca ◽  
Anabela Baptista Paula ◽  
Carlos Miguel Marto ◽  
Ana Coelho ◽  
Siri Paulo ◽  
...  
Keyword(s):  
Systematic Review ◽  
Root Canal ◽  
Biological Effects ◽  
Tissue Response ◽  
In Vivo Studies ◽  
Cochrane Library ◽  
Toxic Potential ◽  
Root Canal Sealers

(1) Aim: To perform a systematic review of the literature on the biocompatibility of root canal sealers that encompasses the various types of sealers that are commercially available as well as both in vitro and in vivo evidence. (2) Methods: This systematic review has been registered in PROSPERO (ID 140445) and was carried out according to PRISMA guidelines using the following databases: PubMed, Cochrane Library, ClinicalTrials.gov, Science Direct, and Web of Science Core Collection. Studies published between 2000 and 11 June 2019 that evaluated cytotoxicity (cell viability/proliferation) and biocompatibility (tissue response) of root canal sealers were included. (3) Results: From a total of 1249 studies, 73 in vitro and 21 in vivo studies were included. In general, studies suggest that root canal sealers elicit mild to severe toxic effects and that several factors may influence biocompatibility, e.g., material setting condition and time, material concentration, and type of exposure. Bioactive endodontic sealers seem to exhibit a lower toxic potential in vitro. (4) Conclusions: The available evidence shows that root canal sealers exhibit variable toxic potential at the cellular and tissue level. However, the methodological heterogeneity among studies included in this systematic review and the somewhat conflicting results do not allow a conclusion on which type of sealer presents higher biocompatibility. Further research is crucial to achieve a better understanding of the biological effects of root canal sealers.

Effects of root canal sealers on immunocompetent cells in vitro and in vivo

2002 ◽  
Vol 31 (3) ◽  
pp. 178-188 ◽  
Author(s):  
Bratel ◽  
Jontell ◽  
Dahlgren ◽  
Bergenholtz
Keyword(s):  
Root Canal ◽  
Immunocompetent Cells ◽  
Root Canal Sealers
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