HOSA Dental Terminology Practice 2026 - Free Dental Terminology Practice Questions and Study Guide

The primary function of a porcelain-fused-to-gold (PFM) crown is to completely cap the tooth with a metal base and fused porcelain. This type of crown is designed to restore the shape, size, strength, and appearance of a tooth that has been damaged by decay, fracture, or other dental issues.

The metal base provides durability and strength, which is essential for areas in the mouth that experience significant chewing forces. The porcelain overlay not only enhances the aesthetic appeal of the crown by mimicking the natural appearance of tooth enamel but also protects the underlying metal from wear and staining.

In contrast, temporary tooth structures are used primarily to protect a tooth during treatment, not designed to offer the same level of restoration or durability as a PFM crown. Improving gum health typically relates to periodontal care and does not specifically pertain to crowns. Similarly, a PFM crown does not serve as a filling material; instead, it encases the entire tooth structure to restore its function and appearance.