Which of the following materials is considered to have a sedative quality in temporary cement?

The material known for its sedative qualities in temporary cement is zinc oxide-eugenol (ZOE). ZOE demonstrates these properties primarily due to eugenol, a component of the material, which has been found to possess analgesic and anti-inflammatory effects. This makes ZOE particularly useful in dentistry, especially for patients experiencing discomfort or sensitivity.

In contrast, resin materials or composite resins are primarily used for their aesthetic appeal and bonding capabilities rather than for their soothing effects. Polycarboxylate is known for its adhesion and biocompatibility but does not provide the sedative qualities that eugenol-rich ZOE does. Hence, ZOE stands out among these choices for its unique ability to soothe and comfort the dental pulp, making it the preferred option when a sedative effect is desired in temporary cement applications.