potassium-thiocyanate and ferric-chloride

Precise quantitative addition of multiple reagents into droplets in sequence is still a bottleneck in droplet-based analysis. To address this issue, we presented a simple and robust glass fiber-induced droplet coalescence method. The hydrophilic glass fiber embedded in the microchannels can induce the deformation of droplets and trigger the coalescence. Serial addition of reagents with controlled volumes was performed by this method without the requirement for an external power source.

Topics: Chlorides; Emulsions; Ferric Compounds; Glass; Hydrophobic and Hydrophilic Interactions; Indicators and Reagents; Microfluidic Analytical Techniques; Particle Size; Surface Properties; Surface-Active Agents; Thiocyanates; Water

Enhancement of the adhesiveness of dental restoratives, such as composite resins, has been clinically essential. A key point in enhancing adhesion is how to treat the dentin surface before bonding. We recently attempted to use an inorganic and non-acidic salt solution for pretreatment to dentin. We paid attention to the salting-in effect of rhodanides which promotes swelling of collagen and gelatin. For pretreatment, we used potassium thiocyanate (KSCN) solution. This study morphologically evaluated the effect of treatment of dentinal smear layer with rhodanides in combination with cross-linking agents such as ferric chloride. Scanning electron microscopy revealed effective removal of the smear layer on the treated dentin surface and obturation of dentinal plugs. Addition of the cross-linking agents to KSCN solution was more effective for pretreatment.

Topics: Alum Compounds; Animals; Cattle; Chlorides; Cross-Linking Reagents; Dentin; Dentin-Bonding Agents; Drug Combinations; Ferric Compounds; Microscopy, Electron, Scanning; Smear Layer; Surface Properties; Thiocyanates; Time Factors