Pathology · single question
What is the most common etiology of an oral (irritation) fibroma?
Show answer and explanation
Correct answer: C. Chronic reactive/traumatic hyperplasia from repeated minor trauma (e.g., cheek/lip biting)
Despite the name 'fibroma,' the common intraoral 'fibroma' is not a true neoplasm — it's a reactive fibrous hyperplasia that develops in response to chronic low-grade irritation (e.g., habitual cheek/lip biting, ill-fitting prosthesis), most often seen on the buccal mucosa along the bite line.