Which local factor is known to contribute to the advancement of periodontal disease?

Dental calculus is a significant local factor that contributes to the advancement of periodontal disease. It forms when dental plaque, which is a biofilm of bacteria, hardens on the teeth due to mineralization from saliva. Once calculus forms, it becomes much more difficult to remove through regular brushing and flossing, providing an ideal surface for further plaque accumulation. This accumulation can lead to inflammation of the periodontal tissues, which can progress to gingivitis and, if left untreated, advance to more severe forms of periodontal disease such as periodontitis. As calculus serves as a reservoir for bacteria that cause periodontal infections, its presence directly correlates with the worsening of periodontal health.

In contrast, regular practices such as brushing teeth, daily flossing, and maintaining consistent dental check-ups generally promote oral health and can help prevent the development and progression of periodontal disease.