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

Down's syndrome, also known as Trisomy 21, is associated with several characteristic features, both physical and physiological. The correct answer regarding macrodontia is based on the awareness that individuals with Down's syndrome often present with dental characteristics that differ from macrodontia, which refers to having abnormally large teeth.

Individuals with Down's syndrome typically exhibit smaller teeth, and there is a propensity for microdontia, which is characterized by smaller-than-normal teeth. Additionally, they may have dental anomalies such as hypodontia (missing teeth) and other malocclusions. This contrasts sharply with the notion of macrodontia, which is not commonly observed in this population.

Other options, such as decreased neutrophil function and an increased susceptibility to periodontal disease, highlight significant health considerations linked to Down's syndrome. Individuals with this condition often experience immune deficiencies leading to compromised neutrophil response, contributing to their increased risk for periodontal disease. Macroglossia, or an enlarged tongue, is also a well-documented trait associated with Down's syndrome, impacting dental and oral health further.