NEET MDS Shorts
65617
Dental MaterialsThe characteristic translucency of the incisal portion of natural teeth, is achieved in porcelain restorations by the addition of enamel porcelain
20797
Dental Materials
Zinc polycarboxylate cement was formulated to have the strength of zinc phosphate and the biological acceptability of zinc oxide-eugenol cements, with the added advantage of chemical bonding to tooth structure.
91658
Dental Materials
Compressive and tensile strengths of spherical alloys are greatest at normal trituration time.
93939
Dental Materials
A base material in dental restoration is primarily used to provide a seal against microleakage.
68855
Dental Materials
Low-speed amalgamators operate at 3200 to 3400 cpm, medium-speed at 3700 to 3800 cpm, and high-speed at 4000 to 4400 cpm.
69190
Dental MaterialsFins or spines may be produced on a casting because of 1.cracks in the investment 2. too rapid heating of the mold 3. steam production which causes the walls of the mold to flake off
55056
Dental Materials
Resin cements are commonly used for cementing metal crowns and bridges due to their high bond strength and durability.
61285
Dental Materials
In orthodontics, wires with a low load deflection rate are typically preferred for areas requiring large tooth movements because they provide a more constant force as the tooth moves and the appliance is deactivated. This constant force is beneficial for controlling the rate of tooth movement.
34779
Dental Materials
Resin-modified glass ionomer cements bond through micromechanical retention and chemical bonding.
79223
Dental Materials
The ADA specification sets a limit of 2.0 mm/hour for acid erosion to ensure the cement’s stability in the oral environment.