Vertical Dimension at Rest (VDR) refers to the distance between the highest point of the upper and lower dental arches when the jaws are in a relaxed, resting position. It is also known as Resting Vertical Dimension or Rest Position.
In dentistry, the VDR plays a crucial role in fabricating dental prostheses, such as dentures and occlusal splints. The measurement of the VDR helps determine the optimal height and thickness for these dental restorations, ensuring proper alignment, stability, and function. It directly influences the esthetics, phonetics, and overall oral health of individuals.
The VDR can vary from person to person due to factors such as age, occlusal wear, tooth loss, skeletal structure, and muscular balance. Dentists carefully assess the VDR through various methods, including measuring tools, bite registrations, and patient feedback.
Maintaining the correct VDR is essential for a harmonious and functional occlusion. An incorrect VDR can lead to issues such as temporomandibular joint (TMJ) disorders, muscular pain, headaches, and compromised chewing ability. In cases where the VDR is significantly altered, a dentist may need to adjust the occlusion or consider therapeutic options to restore the proper vertical dimension.
Overall, the Vertical Dimension at Rest is a fundamental parameter in dentistry that ensures the stability and functionality of dental restorations. Careful measurement and maintenance of the VDR are vital to achieving optimal oral health and overall well-being.
