American Board of Dental Examiners (ADEX) Dental Hygiene Licensing Practice Exam

Question: 1 / 400

What is a characteristic of high noble metal in PFM copings?

Low oxidation on casting

High noble metals are characterized by their significant resistance to oxidation, which is critical for maintaining aesthetic qualities and ensuring a successful bond between the metal coping and the porcelain layer in porcelain-fused-to-metal (PFM) restorations. This property allows high noble metal copings to withstand the firing temperatures and conditions during the porcelain application without degrading, ensuring that the final restoration maintains its integrity and appearance.

The properties of high noble metals also typically include a high melting point and good conductivity, but in the context of PFM copings, their low oxidation is particularly crucial as it directly impacts the quality of the bond and the long-term success of the restoration. Strength is generally not a concern for high noble metals as they are quite strong and durable, so the focus on oxidation is what sets them apart in this context.

Get further explanation with Examzify DeepDiveBeta

High melting point

High conductivity

Low strength

Next Question

Report this question

Download American Board of Dental Examiners (ADEX) Dental Hygiene Licensing Practice Exam PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy