Why is it important to check vertical dimension after a denture reline?

After a denture reline, checking the vertical dimension is crucial primarily to prevent facial collapse. The vertical dimension refers to the space between the upper and lower jaws when the teeth are in occlusion. If the vertical dimension is inadequately adjusted during a reline, it can lead to an improper bite, which may subsequently affect the facial support.

Maintaining the correct vertical dimension is essential, as any significant reduction can cause the facial structures to collapse inward, affecting the appearance of the face and potentially leading to complications such as discomfort or difficulty in chewing. This collapse can create issues with the alignment of the jaw and tension in the muscles of the face, potentially leading to further oral health problems.

While fit, speech clarity, and esthetics are important considerations in a denture reline, the primary concern regarding vertical dimension is to uphold the structural integrity of the face and prevent complications related to jaw alignment and muscle function.