43237

If Impression tray comprising of elastomeric impression material is seated too late as elasticity starts to develop, raised seating pressure is applied to overcome the stiffness of impression material.

60992

39814

Centric relation is best defined as the relation of the mandible to the maxilla when the condyles are in their most posterior position in the glenoid fossae.

26548

The intestinal phase of gastric acid secretion is mainly responsible for inhibiting gastric secretion. This is primarily achieved through the release of hormones like secretin and cholecystokinin (CCK) in response to the presence of acidic chyme in the duodenum. These hormones act on D cells in the stomach to reduce gastrin secretion, which in turn decreases acid production by parietal cells. Additionally, the presence of food in the intestine triggers an enterogastric reflex that inhibits the vagal nerve's excitatory effects on the stomach.

37739

The Quincke sign is the visible pulsation (cyclic reddening and blanching) of the nail bed capillaries when light pressure is applied to the tip of the nail, indicating wide pulse pressure.

59477

Sodium hypochlorite is commonly used as an irrigating solution with ultrasonic instruments in endodontic treatment for its antimicrobial properties. It helps in the cleaning and disinfection of the root canal system by removing organic debris and bacteria. Normal saline, hydrogen peroxide, and chloramine are also used as irrigants, but sodium hypochlorite is the most effective in eliminating bacteria.

84974

Explanation: The combination of acrylic resin posterior teeth and porcelain anterior teeth can lead to differential wear and stress concentrations, which may cause resorption of the anterior residual ridge. Porcelain teeth are harder and can create more stress on the underlying bone compared to acrylic teeth, leading to potential resorption. Therefore, option 2 is the correct answer, as it highlights the negative impact on the anterior ridge.

98253

Ormocers have several advantages, including low shrinkage, excellent biocompatibility, and superior resistance to masticatory forces. These properties make them suitable for restorations that resemble natural teeth.

48667

Penicillamine is a chelating agent that binds to copper ions, forming a stable, water-soluble complex that is excreted by the kidneys. It is the gold standard for Wilson’s disease treatment.

83067

The threshold for phosphate excretion is when the plasma phosphate concentration reaches approximately 0.50 mM, causing some to be filtered into the urine.