Physical properties of MTA, BioAggregate and Biodentine in simulated conditions: A micro-CT analysis.

The aim of this study was to evaluate the physical properties of calcium-silicate based cements as retrograde filling in different pH and blood conditions using micro-CT. Eighty-four teeth were obturated and after root-end resection, 3 mm-deep root-end cavity was ultrasonically prepared. The samples were divided into four test groups (n=21). Cements were freshly prepared and analyzed with micro-CT before and after exposed. The test groups were exposed for four days to environments containing acid, alkali, or blood. An acidic pH significantly reduced the volume of all materials after four days and differed from the other environments. Biodentine has the highest percentage of loss in volume and density after treatment in an acidic environment. Porosity formation in the acidic medium was observed in Biodentine amongst all materials. The three-dimensional structures of all materials changed after exposed to an acidic pH, while fewer changes were observed in the structures of materials treated with blood and alkali.

[1]  E. Chatzitheodoridis,et al.  Comparative evaluation of sealing ability and microstructure of MTA and Biodentine after exposure to different environments , 2015, Clinical Oral Investigations.

[2]  N. S. Shojaee,et al.  Effect of Acidic Environment on the Push-Out Bond Strength of Calcium-Enriched Mixture Cement , 2014, Iranian endodontic journal.

[3]  A. Elnaghy.  Influence of acidic environment on properties of biodentine and white mineral trioxide aggregate: a comparative study. , 2014, Journal of endodontics.

[4]  D. Damidot,et al.  Investigation of the hydration and bioactivity of radiopacified tricalcium silicate cement, Biodentine and MTA Angelus. , 2013, Dental materials : official publication of the Academy of Dental Materials.

[5]  J. Camilleri,et al.  Investigation of the physical properties of tricalcium silicate cement-based root-end filling materials. , 2013, Dental materials : official publication of the Academy of Dental Materials.

[6]  M. Forghani,et al.  Effect of calcium hydroxide premedication on the marginal adaptation of calcium-enriched mixture cement apical plug , 2012, Dental research journal.

[7]  C. Bramante,et al.  Effect of different radiopacifying agents on the physicochemical properties of white Portland cement and white mineral trioxide aggregate. , 2012, Journal of endodontics.

[8]  M. Saghiri,et al.  Effect of alkaline ph on sealing ability of white mineral trioxide aggregate. , 2011, Medicina oral, patologia oral y cirugia bucal.

[9]  N. Thosar,et al.  Evaluation of calcium ion, hydroxyl ion release and pH levels in various calcium hydroxide based intracanal medicaments: An in vitro study , 2011, Contemporary clinical dentistry.

[10]  M. Forghani,et al.  Effect of Previous Calcium Hydroxide Dressing on the Sealing Properties of the New Endodontic Cement Apical Barrier , 2011, European journal of dentistry.

[11]  M. Akbari,et al.  The Effect of Calcium Hydroxide on the Short and Long-Term Sealing Properties of MTA Apical Barrier , 2011, Iranian endodontic journal.

[12]  B. Grosgogeat,et al.  Impedance methodology: A new way to characterize the setting reaction of dental cements. , 2010, Dental materials : official publication of the Academy of Dental Materials.

[13]  P. Dummer,et al.  An evaluation of the effect of blood and human serum on the surface microhardness and surface microstructure of mineral trioxide aggregate. , 2010, International endodontic journal.

[14]  A. Saghiri,et al.  Scanning electron micrograph and surface hardness of mineral trioxide aggregate in the presence of alkaline pH. , 2009, Journal of endodontics.

[15]  M. Eghbal,et al.  Sealing ability of a novel endodontic cement as a root-end filling material. , 2008, Journal of biomedical materials research. Part A.

[16]  G. Eliades,et al.  Comparative in vitro study of the sealing efficiency of white vs grey ProRoot mineral trioxide aggregate formulas as apical barriers. , 2008, Dental traumatology : official publication of International Association for Dental Traumatology.

[17]  S. J. Hayes,et al.  The effect of pH on surface hardness and microstructure of mineral trioxide aggregate. , 2007, International endodontic journal.

[18]  Jiang Chang,et al.  Characterization of Ca3SiO5/CaCl2 composite cement for dental application. , 2008, Dental materials : official publication of the Academy of Dental Materials.

[19]  T. Kirkpatrick,et al.  Effects of pH and mixing agents on the temporal setting of tooth-colored and gray mineral trioxide aggregate. , 2007, Journal of endodontics.

[20]  I. G. de Moraes,et al.  Sealing ability of MTA and radiopaque Portland cement with or without calcium chloride for root-end filling. , 2006, Journal of endodontics.

[21]  M. Fridland,et al.  MTA solubility: a long term study. , 2005, Journal of endodontics.

[22]  M. Tagger,et al.  A standard for radiopacity of root-end (retrograde) filling materials is urgently needed. , 2004, International endodontic journal.

[23]  F. Lin,et al.  Effects of physiological environments on the hydration behavior of mineral trioxide aggregate. , 2004, Biomaterials.

[24]  W. Schindler,et al.  The sealing ability and retention characteristics of mineral trioxide aggregate in a model of apexification. , 2002, Journal of endodontics.

[25]  M. Torabinejad,et al.  Dye leakage of four root end filling materials: effects of blood contamination. , 1994, Journal of endodontics.

[26]  J. de Graaff,et al.  Short-chain fatty acids produced by anaerobic bacteria alter the physiological responses of human neutrophils to chemotactic peptide. , 1987, The Journal of infection.

[27]  J. Andreasen,et al.  pH changes in dental tissues after root canal filling with calcium hydroxide. , 1981, Journal of endodontics.