Which statement is correct about polishing cups?

The correct statement regarding polishing cups is that they are available in a synthetic material for patients with latex allergies. This is an important consideration in dental practices, as latex allergies can lead to significant health issues for sensitive patients. By using synthetic materials, dental professionals can provide safe care while ensuring that all patients, regardless of their allergies, have access to the dental services they require.

While the other options may contain elements of truth about dental polishing practices, they do not specifically address the critical need for materials that accommodate patients with allergies. For instance, while rubber may be used in some polishing cups for its elasticity, it poses a risk for those with latex allergies. Similarly, while some polishing cups might include metal components for durability, this is not the defining or most notable feature for patient safety. Lastly, the use of polishing cups on sensitive teeth is often a matter of professional judgement, but it does not convey the specific focus on accommodating allergies that is crucial in modern dental care.