Dentures should be relined or renewed to maintain optimal fit, comfort, and functionality. Over time, changes in the jawbone structure occur, which can lead to a loose fit of the dentures. Relining involves adding new material to the base of the denture to adapt to these changes and restore a proper fit. Renewal becomes necessary due to wear and tear, which can result in deterioration of the denture’s material, affecting its effectiveness and appearance. Regular relining or renewal ensures that dentures remain snug, comfortable, and functional, allowing wearers to speak, eat, and smile with confidence.