Before relining a complete denture, it is essential to build up posterior teeth to ensure that the denture fits properly and functions effectively. This step is crucial as it addresses any changes in the oral cavity that may have occurred since the original denture was constructed, such as bone resorption or changes in the relationship between the upper and lower jaws. By building up the posterior teeth, a more accurate occlusal relationship can be established, which contributes to better retention and stability of the denture during function.
The relining process involves reshaping the tissue side of the denture to fit the current contours of the patient's oral tissues, which can change over time. Proper alignment and support from the posterior teeth are necessary to achieve a successful reline, leading to improved comfort and chewing efficiency for the patient.
In contrast, reducing the denture base, performing a surgical procedure, or adjusting the occlusion may be necessary in certain situations, but they do not directly address the fundamental issue of ensuring the posterior teeth are appropriately calibrated to support the relining process.