What is the main feature associated with suprabony pockets in periodontitis?

Suprabony pockets in periodontitis are primarily characterized by horizontal bone resorption. This type of pocket occurs when the periodontal tissue loses attachment above the level of the alveolar bone, leading to a shallow pocket that retains the surrounding horizontal bone structure. In this scenario, the loss of bone is more uniform across the area rather than localized, resulting in a flatter contour of bone loss.

The horizontal bone resorption typically presents as a gradual reduction in the height of the alveolar bone around the tooth, contributing to the formation of suprabony pockets. These pockets are often easier to visualize and measure during a dental examination, as they do not involve deep, irregular bone loss that characterizes other forms of periodontal issues.

While vertical bone resorption and angular bone loss pertain to deeper pockets and more complex patterns of support loss, they are not the primary features associated specifically with suprabony pockets. Increased attachment loss is relevant in the overall context of periodontitis but does not define the unique feature of suprabony pockets.