When is a denture reline typically indicated?

A denture reline is typically indicated when the supporting tissues, particularly the alveolar ridges, undergo resorption. This is a natural process that occurs over time, particularly after tooth extraction or the initial placement of dentures. As the bone and soft tissue change in shape and density, the fit of the dentures can become loose, leading to discomfort, inadequate retention, and potential mucosal irritation. A reline involves adding new material to the fitting surface of the denture to compensate for these changes, improving the adaptability and functionality of the prosthesis.

In contrast, losing interest in wearing dentures, discoloration, or minimal wear do not warrant a reline. While discoloration can affect the aesthetics of the denture, it does not impact the fit, so it's not a reason to reline. Similarly, minimal wear suggests that the denture is still in good condition and likely retains its fit, thus also making a reline unnecessary. Therefore, the indication for a denture reline directly correlates with the physiological changes in the oral environment rather than cosmetic or minimal wear issues.