What is the primary purpose of checking the vertical dimension in the context of an immediate denture?

The primary purpose of checking the vertical dimension in the context of an immediate denture is to establish vertical dimension occlusion (VDO). VDO refers to the vertical distance between the upper and lower jaws when the teeth are in occlusion. This measurement is crucial for ensuring that the denture functions properly and that the relationship between the upper and lower arches is maintained. Establishing the correct VDO is essential for proper alignment and function of the denture, which impacts the patient's ability to chew, speak, and maintain comfort.

Achieving the correct vertical dimension is pivotal in immediate dentures because it directly influences the overall fit and functional performance of the prosthesis. An incorrect VDO can lead to discomfort, difficulties in eating and speaking, and even temporomandibular joint (TMJ) issues in the long term.

While checking the fit, aesthetic appearance, and phonetics of the denture are important considerations, they are secondary to establishing the correct vertical dimension as it encompasses the foundational aspect of how the denture interacts with the oral structures.