Where is the height of contour located on the facial surface of a posterior tooth?

The height of contour on the facial surface of a posterior tooth is located at the cervical third. This area represents the greatest bulge or contour of the tooth as it is visible from the front view. The cervical third is crucial because it influences the way teeth interact with adjacent teeth and with gum tissue, playing an important role in both aesthetics and function.

In the cervical third, the contour helps to direct plaque and food particles away from the gum tissues, thus contributing to periodontal health. It also aids in providing proper support for restorations and ensuring the necessary space for the dental arch.

Understanding the height of contour is essential for accurate tooth preparation, especially in the context of dental restorations. It is important for dental professionals to know this location, as it assists in designing restorations that fit well and maintain the health of surrounding structures.