Which factor is NOT typically a cause of gingival recession?

Gingival recession occurs when the gum tissue surrounding the teeth pulls back, exposing more of the tooth or its root. Each of the factors typically associated with gingival recession plays a role in contributing to or exacerbating this condition.

Trauma from occlusion, although it can lead to various periodontal issues, is less directly linked to the process of gingival recession compared to the other factors listed. While occlusal trauma may cause tooth mobility or loss of attachment, it does not specifically cause the recession of the gingiva itself.

On the other hand, gingival inflammation can lead to tissue breakdown and, as a result, recession. Frenal pulls can directly affect the position of the gingiva, particularly if they exert tension beyond the mucogingival junction, pulling the gum tissue away from the tooth. An aggressive brushing technique often results in abrasion of the gingival margin, making it more prone to recession.

The distinction here is that while occlusal trauma is important in periodontal health, it is not typically identified as a direct cause of gingival recession, making it the correct choice in this context.