When the use of vasoconstrictor is contraindicated, the retraction cord is impregnated with ______ and the cord may have a _____ agent applied to it to control bleeding:

When the use of a vasoconstrictor is contraindicated, it's important to manage bleeding effectively during dental procedures. The correct response highlights the use of aluminum chloride, which is a hemostatic agent that aids in controlling bleeding.

Aluminum chloride works by promoting blood coagulation at the site, effectively reducing the risk of excessive bleeding during the procedure. Additionally, the term "hemostatic" refers to substances that are specifically designed to prevent or control bleeding, further emphasizing why this combination (aluminum chloride and a hemostatic agent) is appropriate for situations where vasoconstrictors like epinephrine cannot be used due to potential health risks for the patient.

Thus, by using aluminum chloride-soaked retraction cords, dental professionals can still achieve hemostasis while avoiding the complications that could arise from vasoconstrictors. This approach is critical for maintaining patient safety and ensuring procedural efficacy in dentistry.