Effect of bee products on the setting properties of mineral trioxide aggregate mixed with calcium chloride dihydrate. A preliminary study
Hany Mohamed Aly Ahmed, Rajan Saini, Ismail Ab. Rahman and Deepti Saini
This study evaluated and compared the setting time and handling properties of white mineral trioxide aggregate (WMTA) and calcium chloride dihydrate (CaCl2•2H2O), when mixed with manuka honey, tualang honey, propolis and royal jelly. WMTA, CaCl2•2H2O and sterile water were mixed with various bee products and the mixtures were immediately transferred to stainless steel ring moulds and placed on an electronic weighing scale. Vertical load of 300-400 g was applied for 5 seconds to create indentations, which were examined under magnification and setting time was then calculated. Handling properties were observed during mixing and transferring of materials. WMTA was mixed with sterile water and this served as a negative control. WMTA mixed with CaCl2•2H2O and sterile water served as a positive control. Setting time and handling properties of various groups were compared with the control groups.
In terms of setting time, tualang honey showed the best results with a setting time range of 17-20 minutes followed by manuka honey in the range 29-36 minutes. Royal jelly was in the range of 76-86 minutes. Setting time with propolis mix was the highest being in the range of 125-152 minutes. Handling properties, which were compromised in both positive and negative control groups, were better with tualang honey, manuka honey and propolis. Results of this study suggest that handling properties were enhanced on adding tualang honey and manuka honey to WMTA and CaCl2•2H2O mix without a significant change in the setting time, as compared to the positive control.
P.126: 2nd paragraph, 4th sentence should read:
"This formulation of calcium chloride was chosen due to its reduced hygroscopic nature, which provides adequate time for the weighing of granules before adding them to MTA powder (as being less hygroscopic they would not absorb water so fast, which otherwise could lead to change in their state and also may cause an error in their weight)".
mineral trioxide aggregate (MTA), bee products, setting time, handling properties.