94482

The gelation temperature is the point at which the material transforms from a sol to a gel, which is critical for impression making.

28252

Mercury that complies with the requirements of the United States Pharmacopoeia also meets requirements for purity in ANSI/ADA Specification No. 6, which is typically 99.9% pure.

70140

Ductility of Base metalalloy increased by Nickel

Cobalt: (35-65%) decrease hardness, strength and rigidity.
Chromium: (23 – 30 %) passivity effect, decrease melting point.
Nickel: (0-20%) decrease strength and hardness, increase ductility (Nickel cause sensitivity in some patients).
Molybdenum: (0-7%) increase hardness.

63266

The relationship between zinc concentration and setting expansion is not specified in the given text. However, the presence of zinc in amalgams can affect the rate and extent of setting.

12925

Optimum strength of alginate gels is obtained by recommended W/P ratio

87801

Chelation of carboxyl groups of the polyacids with the calcium in the apatite of enamel and dentin is the main mechanism through which glass ionomer bonds to tooth structure.

33186

Type II glass ionomer cements have a higher compressive strength, while Type I is often used for better aesthetics.

94525

Polycarboxylate cement is a luting agent that provides adhesion to calcified dental tissues

55600

An obtundent is used to reduce post-operative sensitivity by sealing the dentinal tubules and protecting the pulp.

87146

Dental amalgam is a mixture of metallic elements consisting of silver, tin, copper, and sometimes zinc, combined with liquid mercury to form an amalgamated alloy. The mercury acts as a matrix that bonds the metal particles together. It does not contain hydrophilic polymers, which are typically found in resin-based composite materials used for tooth-colored restorations.