Australian Dental Council (ADC) Test 2026 – 400 Free Practice Questions to Pass the Exam

When considering the case of a patient with a lower denture experiencing paresthesia of the lower lip, the most likely cause is pressure on the mental foramen. The mental foramen is a small anatomical opening located in the mandible, typically in the area of the premolars, where the mental nerve exits. This nerve supplies sensation to the lower lip and chin.

When a lower denture is incorrectly positioned or exerting pressure in this region, it can directly compress the mental nerve, leading to symptoms such as tingling, numbness, or a burning sensation, which are classified as paresthesia. This is a critical understanding for dental professionals, as it highlights the importance of adequate denture fit and adjustment to alleviate pressure points that may lead to neurological symptoms.

Other options, while they may seem plausible, do not typically result in paresthesia of the lower lip to the same degree. For instance, pressure on the genioglossus and mylohyoid muscles may result in discomfort or functional issues with tongue movement or floor of mouth pain but is unlikely to directly cause lower lip paresthesia. Similarly, while improper fitting of a denture can cause various issues, it is the specific compression of the mental nerve at the mental