Excessive vertical dimension in dentistry refers to a condition where the distance between the upper and lower jaws, when the teeth are in occlusion (biting together), is greater than the ideal or normal measurement. This increased interocclusal space can result from various factors, including tooth wear, missing teeth, or poorly designed dental restorations. For instance, if a patient has worn down their teeth significantly over time, the dentist may need to increase the vertical dimension when constructing new crowns or dentures to restore proper function and aesthetics.
Maintaining proper vertical dimension is crucial for several reasons. First, it impacts the functionality of the masticatory system, affecting chewing efficiency and speech articulation. Second, it influences facial aesthetics, as an altered vertical dimension can change the appearance of the lower face, potentially leading to an aged or unnatural look. Historically, dentists have relied on various clinical and radiographic methods to determine the appropriate vertical dimension for each patient, aiming to achieve a balance between function, aesthetics, and patient comfort. Understanding and managing this aspect of dental treatment is vital for long-term success and patient satisfaction.