Which of the following is a characteristic of irritation fibroma?

A characteristic of irritation fibroma is that it presents as a firm, non-tender mass. This type of lesion typically arises as a response to chronic irritation or trauma, commonly found in the oral cavity, often on the buccal mucosa or gingiva. The firmness of the mass is due to the dense fibrous connective tissue that composes it, which sets it apart from other types of lesions that may be softer or more movable.

When considering the nature of irritation fibromas, they are benign lesions rather than malignant, which distinguishes them from other conditions that have more aggressive or harmful characteristics. The mass does not typically demonstrate rapid growth; instead, it develops slowly over time, correlating with the ongoing stimulus or irritant. The firm and non-tender attributes are important for clinicians to identify and differentiate irritation fibromas from other growths that may present differently.