Calcium hydroxide

Vertical root fracture is the one of the most critical complications of endodontically treated teeth which can take place before, during or after root canal filling and can end up with tooth loss (1, 2,3). Exaggerated loss of tooth structure due to trauma and caries, dehydration of dentin (4), access cavity preparation, mechanical preparation (5) and irrigation (6) of the root canal, and post space preparation are critical factors that would influence the durability and strength of root canal…

This experiment exemplifies the effects of the concentration of hydrogen on the strength of bone. As bone is majorly composed of calcium, and knowing that acids want to neutralize. Throughout the experiment, results show that the strength of the bone was compromised in acidic situations, but rather unaffected in situations where the concentration of hydrogen was basic. Even more noticeable than the change in pure tensile strength is the change in the maximum deflection before fracture.…

channels and protein pumps [15]. For cellular uptake of strontium and calcium, cells may use non-specific ion pumps or element specific channels that only remove strontium and calcium from the nutrient…

Everything is made of atoms, which are the smallest representative parts of each of the ninety-two elements that occur in nature. Elements are either metals, such as iron, copper or calcium or non-metals such as carbon, oxygen or nitrogen. Chemistry is concerned with the way atoms link together to form molecules, which are the natural chemical units of matter. Molecules represent the smallest particle of a chemical compound which retains the characteristics and chemical properties of the…

This gas added to calcium hydroxide solution produced carbon dioxide. This experiment proved that carbon dioxide was present in seashells. When shells sink to the ocean floor they are eventually turned into sedimentary rocks and as the ocean gets more acidic and its PH drops, the…

compounds was supported with this experiment. The hypothesis stated that potassium hydroxide would have the greatest effect on the acidic solution. This was supported here as it had the highest average change in pH by far. On average, the pH value of the acidic solution increased by 12.5. This is significantly higher than the increase of the other solutions, which only increased around a pH of 4. The reason why potassium hydroxide seemed to be the strongest alkaline-forming substance is because…

Eggshells are made up of a brittle white substance called calcium carbonate, which is also found in cave stalactites. Along with calcium carbonate is the remaining five percent calcium phosphate, magnesium carbonate, and soluble and insoluble proteins (Senese, 2010). The shell is covered with over seventeen thousand tiny pores allowing air to pass through. The semipermeable…

To a small extent calcium carbonate is also formed when calcium silicate and aluminates of the hydrated cement react with carbon dioxide from the atmosphere. Carbonation process in concrete results in two deleterious effects (I) shrinkage may occur (ii) concrete immediately adjacent to steel…

usually white, thick and creamy in texture. There are two main types of relaxers primarily used by women of color. They are lye and no-lye relaxers. Lye relaxers contain the active ingredient sodium hydroxide, while no-lye relaxers contain the active ingredient calcium hydroxide or guanidine hydroxide. A brand of relaxer popular with salons is the Affirm Relaxer System which is professional grade and usually sold in larger quantities for commercial use. There are a multitude of at-home relaxer…

crystalline, inorganic compound that forms the toxic fumes produced when cadmium oxides are heated. It is an odorless white solid that is more dense than water. Cadmium nitrate is prepared by first dissolving the metal cadmium or its oxide, carbonate, hydroxide in nitric acid them immediately…