36270

The double flare technique is best suited for preparing fine and curved canals.

68966

Silk sutures are favored for vessel ligation because they provide excellent knot security and are easy to work with, making them a reliable choice in surgical settings.

69459

The parasympathetic nervous system acts on muscarinic receptors (specifically M2 receptors) in the heart to decrease the heart rate and atrial contractility, thereby contributing to a resting state and energy conservation.

69201

While high LDL cholesterol is a significant risk factor for atherosclerosis, it is not a lifestyle factor. It is a metabolic condition that can be influenced by diet and physical activity.

81353

Osteomalacia is characterized by abnormal osteoid and abnormal mineralization.

69715

The ceramic used in porcelain fused to metal (PFM) restorations consists of low fusing porcelain. 
Low fusing porcelains have a firing temperature range of approximately 850–1100°C (1562–2012°F)

64668

Synthetic monofilament sutures are preferred for their smooth surface, which reduces the risk of infection by preventing bacteria from being trapped in the suture material, thus promoting better healing outcomes.

22806

Hydroquinone is the initiator in developing solutions for photographic films.

55367

• External resorption (vital teeth): The prognosis depends on the type (surface, inflammatory, or replacement resorption). Surface resorption often heals spontaneously if the pulp remains vital and the cause (like trauma) is removed. Inflammatory resorption can be managed if detected early. Replacement resorption (ankylosis) has a poor long-term prognosis. Overall, external resorption in vital teeth can sometimes be controlled, so prognosis is variable but often better than the other two conditions.

• Internal resorption (vital teeth): This usually requires endodontic treatment once detected. If the lesion is small and treated early, prognosis can be favorable. However, untreated internal resorption progresses and weakens the tooth structure, making prognosis worse than external surface resorption.

• Vertical root fracture (vital teeth): This has the worst prognosis. Vertical root fractures are generally considered hopeless because they cannot be predictably repaired. Extraction is usually the treatment of choice.

vital teeth with external resorption generally have the better prognosis compared to internal resorption and vertical root fracture.

31713

Calculus formation is primarily retarded by daily plaque removal through proper oral hygiene practices, as calculus forms from mineralized plaque.