Australian Dental Council (ADC) Practice Test 2025 - Free ADC Practice Questions and Study Guide

Nickel chromium alloys are commonly used in dental applications, particularly in the fabrication of base plates for dentures. The consideration for their use stems primarily from the potential for allergic reactions to nickel, which is a well-documented concern. Nickel is one of the most common allergens, and studies have shown that a notable percentage of women, as well as some men, can develop hypersensitivity to it. This allergic response can lead to symptoms such as dermatitis when these individuals come into contact with nickel-containing materials.

In dental scenarios, where base plates may have direct contact with oral tissues, the presence of nickel poses a risk of allergic reactions in sensitive individuals. Clinicians must be aware of this potential to avoid discomfort and adverse reactions in patients. This consideration also impacts the selection of materials for dental restorations and prosthetics, emphasizing the need for patient history regarding metal allergies.

While chromium can also cause allergic reactions, it is less commonly reported compared to nickel. Therefore, the significance of nickel on allergic responses, particularly in females, is a primary reason for caution in using nickel chromium in base plates.