Which fluoride is not recommended for patients with ceramic or composite restorations?

Acidulated phosphate fluoride (APF) is not recommended for patients with ceramic or composite restorations due to its acidic pH. The acidity of APF can lead to erosive effects on certain materials used in dental restorations, particularly those that are made from ceramics or composites. These materials can be compromised or dulled when exposed to the acidic environment created by APF, ultimately affecting their appearance and integrity.

In contrast, sodium fluoride and neutral sodium fluoride have a neutral pH and are safe to use with such restorations. Stannous fluoride also does not have the same erosive tendencies as APF and can be used safely; however, it may not provide some of the specific benefits associated with the use of APF, such as enhanced fluoride uptake in enamel. Overall, for preserving the quality and longevity of ceramic and composite restorations, avoiding APF is advised.