What is the primary cause of tooth loss after the age of 3?

The primary cause of tooth loss after the age of 3 is periodontitis. This condition, which is a serious gum infection that damages the soft tissue and destroys the bone that supports teeth, often arises from untreated gingivitis and plaque build-up. In children over the age of 3, periodontitis can develop as they may not be managing their oral hygiene effectively.

As children grow, they begin to consume a wider variety of foods, some of which can contribute to plaque accumulation if oral hygiene is not properly maintained. Moreover, the transition into adolescence often correlates with hormonal changes that can increase the risk of gum disease, thus making periodontitis a prevalent cause of tooth loss during this age.

While cavities are indeed a common issue that can lead to tooth loss in younger children, the longer-term effects of untreated periodontal disease typically escalate as children age. Trauma and infections can result in tooth loss; however, they are less frequent causes in comparison to periodontitis, especially when considering the overall population. Thus, periodontitis is recognized as the primary underlying factor for tooth loss in children beyond the age of 3.