Australian Dental Council (ADC) Test 2025 – 400 Free Practice Questions to Pass the Exam

Periodontitis primarily affects the periodontal membrane, also known as the periodontal ligament. This structure is crucial as it connects the tooth to the surrounding alveolar bone and supports the tooth within its socket. In periodontitis, inflammation occurs primarily in the gingiva and can extend deeper to affect the supporting structures including the periodontal membrane. As the condition progresses, it can lead to the destruction of the periodontal tissues, including the alveolar bone and connective tissues. Understanding the impact of periodontitis on the periodontal membrane is essential for effective diagnosis and treatment planning, as preserving its integrity is crucial for maintaining tooth stability and overall oral health.

While the alveolar bone is also significantly affected by periodontitis, the question specifically inquires about the primary structure affected at the onset of the disease, which is the periodontal membrane. The gingiva may show inflammation without the full extent of the disease, and tooth enamel is not directly impacted by periodontitis since it primarily concerns the supportive tissues around the tooth rather than the tooth structure itself.