Silva-Herzog FD, Rodríguez OFF, González MLA, Dávila PCE, Torres MF, López-Aldrete A

Language: Spanish
References: 11
Page: 65-71
PDF size: 403.26 Kb.

ABSTRACT

Objective: To evaluate, using computational fluid dynamics, the ability of Biodentine^™ to resist microleakage when used as a retro-sealing material. Methodology: In this study, 60 single-rooted teeth were used, which were biomechanically prepared and filled using the standardized ProTaper single-cone technique (Dentsply, Maillefer, Switzerland) and ultrasound, using Silco root-canal sealer (Silva-Collyan, SLP, Mexico). The retrograde cavity was prepared using ultrasound and a Retro Kit (NSK Company, Japan) E31D 2 mm-diameter tip. Retrograde filling was performed using each of the sealers to be evaluated, as follows: group 1: sealed with Biodentine^™ (Septodont, France); group 2: sealed with Grey MTA (Angelus^™, Londrina PR, Brazil); group 3: control. A specially designed software was used, which measures microleakage by using infrared sensors to detect changes in voltage in an air bubble within a capillary tube. The software expresses the time it takes (mm/min) for the bubble to pass through the second sensor, then converts these measurements into µL/min to express the rate of leakage. All of the measurements are taken considering a single interval. Results: The results of the evaluation of the apical microleakage of Biodentine^™ and MTA Grey AngelusTM obtained in this study were, in both cases, favorable, proving that there is no significant difference between the two in this respect. However, the characteristics of each in terms of their handling, setting time, and porosity differed. No statistically significant difference between the Mann-Whitney U group and the Kruskal-Wallis group was found (p = 0.256). Conclusion: The performance of BiodentineTM and Gray MTA Angelus^™ is ideal for retrograde filling pur-poses. Further studies are needed, including SEM analysis, in order to determine the quality of the seal, with respect to the interface formed with the dentin structure.

REFERENCES

1. Bergenholtz G, Hřrsted-Bindslev P, Reit C. Endodoncia. 2.a ed. México: Manual Moderno; 2011.

2. http://www.septodont.es/products/biodentine

3. http://www.angelus.ind.br/

4. http://www.dental-laval.cl/uploads/archivos/septodont/Biodentine%20Septodont.pdf

5. Derkson GD, Pashley DH, Derkson ME. Microleakage measurement of selected restorative materials: a new in vitro method. J Prosthet Dent. 1986; 56 (4): 435-440.

6. Wu MK, Kontakiotis EG, Wesselink PR. Long-term seal provided by some root-end filling materials. J Endod. 1998; 24 (8): 557-560.

7. Oruçoğlu H, Sengun A, Yilmaz N. Apical leakage of resin-based root canal sealers with a new computerized fluid filtration meter. J Endod. 2005; 31 (12): 886-890.

8. Higa RK, Torabinejad M, McKendry DJ, McMillan PJ. The effect of storage time on the degree of dye leakage of root-end filling materials. Int Endod J. 1994; 27 (5): 252-256.

9. Pommel L, Jacquot B, Camps J. Lack of correlation among three methods for evaluation of apical leakage. J Endod. 2001; 27 (5): 347-350.

10. Pommel L, Camps J. Effects of pressure and measurement time on the fluid filtration method in endodontics. J Endod. 2001; 27 (4): 256-258.

11. Tobón-Arroyave SI, Restrepo-Pérez MM, Arismendi-Echavarría JA, Velásquez-Restrepo Z, Marín-Botero ML, García-Dorado EC. Ex vivo microscopic assessment of factors affecting the quality of apical seal created by root-end fillings. Int Endod J. 2007; 40 (8): 590-602.