Which of the following is typically NOT a characteristic of gingival hyperplasia?

Gingival hyperplasia is characterized by the overgrowth of gingival tissue, which can be associated with several features. Among these, the option indicating an increase in attached gingiva is typically not a characteristic of gingival hyperplasia.

When gingival hyperplasia occurs, the excessive proliferation of gum tissue usually leads to an enlarging mass that may obscure the tooth structure and create pockets that can trap plaque and calculus. While it might seem that the attachment could increase due to the enlargement, the reality is that the disease process generally results in the gingival tissues becoming less firmly attached due to the abnormal growth and formation of pockets.

The other characteristics—painless swelling, bleeding upon probing, and the presence of fibrous tissue—are commonly seen in gingival hyperplasia. The swelling tends to be painless as the condition progresses, and the fibrous tissue that forms can contribute to the overall appearance of the swollen gums. Additionally, bleeding upon probing is a frequent occurrence due to the inflammation and vascularity of the hyperplastic tissue.

Thus, the correct choice reflects an understanding that gingival hyperplasia does not typically result in an increase in attached gingiva, making that option accurate in the context of the presented characteristics.