What is necessary to simulate occlusal force when performing a functional reline after RPD placement?

When performing a functional reline after the placement of a removable partial denture (RPD), providing a relief of 1.0mm is necessary to simulate occlusal forces effectively. This amount of relief allows for adequate adjustment and accommodation of the tissues under the denture base, facilitating a more accurate fit. A 1.0mm relief is generally sufficient to replicate the natural movement of the oral tissues during function, enabling proper adaptation to the patient’s occlusive forces when biting or chewing.

This level of relief helps prevent pressure points and ensures that the reline material can flex slightly under load, which contributes to the overall stability and comfort of the RPD. By mimicking the natural forces that occur during mastication, the dentist can achieve a more functional and esthetically pleasing result.