What are dentures?

Dentures are specifically designed as prosthetic devices that replace missing teeth, making option B the correct choice. They are typically made from materials such as acrylic or metal and are molded to fit the patient’s gums. Dentures can be complete, replacing all the teeth in an arch, or partial, which fill in gaps in a person's smile created by missing teeth.

The purpose of dentures is not only to restore the appearance of one's smile but also to improve functions such as eating and speaking. They provide support for the facial muscles and help maintain the structure of the jaw.

Other options do not correctly describe what dentures are. For instance, temporary dental fixtures are not the same as dentures, which are designed for long-term use. Natural teeth that have been repaired are still considered natural teeth and do not fall into the category of dentures. Finally, teeth whitening products serve a completely different purpose, focusing on enhancing the appearance of existing teeth rather than replacing missing ones.