Produção Nacional
Revisado por pares
Sealing ability of mineral trioxide aggregate (MTA) combined with distilled water, chlorhexidine, and doxycycline
2012; Nihon University; Volume: 54; Issue: 3 Linguagem: Inglês
10.2334/josnusd.54.233
ISSN1880-4926
AutoresRoberta A. A. Arruda, Rodrigo Sanches Cunha, Kenner Bruno Miguita, Cláudia F. M. Silveira, Alexandre Sigrist De Martin, Sérgio Luiz Pinheiro, Daniel Guimarães Pedro Rocha, Carlos Eduardo da Silveira Bueno,
Tópico(s)Dental Radiography and Imaging
ResumoThe aim of this study was to evaluate the sealing ability of mineral trioxide aggregate (MTA Bio) combined with different mixing agents (distilled water, chlorhexidine, doxycycline), used as an apical root-end filling material.Forty-two extracted human teeth were divided into three groups (n = 12); six teeth were used as controls.Root-ends were resected at 90 degrees, 3 mm from the apex.Root-end cavities were prepared using ultrasonic tips and filled with MTA Bio plus distilled water, 2% chlorhexidine solution, or 10% doxycycline solution.Apical sealing was assessed by microleakage of 50% silver nitrate solution.Roots were longitudinally sectioned in a buccolingual plane and analyzed using an operating microscope (20× magnification).Depth of dye leakage into the dentinal walls was measured in millimeters.Results were analyzed using ANOVA and Tukey's test (P = 0.05).MTA Bio plus distilled water showed significantly higher mean leakage results (1.06 mm) when compared with MTA Bio plus doxycycline (0.61 mm), and higher, although not significant, results when compared with MTA Bio plus chlorhexidine (0.79 mm).In conclusion, replacing distilled water with two biologically active mixing agents (doxycycline and chlorhexidine) did not alter the sealing properties of MTA Bio.The antimicrobial properties of these combinations should be further investigated.(
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