National Dental Examining Board of Canada (NDEB) Practice Exam

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Master your National Dental Examining Board of Canada (NDEB) exams with our comprehensive practice guide. Achieve excellence in your dental certification with expertly crafted questions and detailed explanations.

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Which condition is characterized by multiple fractures and blue sclera?

Regional odontodysplasia
OI
Hyperthyroidism
Periodontal disease

The correct answer is: OI

OI or osteogenesis imperfecta is a rare genetic disorder that affects the production of collagen, a protein that helps build and strengthen bones. This results in brittle bones that are prone to fracture easily, even without significant trauma. Blue sclerae, or bluish tint to the whites of the eyes, is a common physical feature of individuals with OI due to the translucency of the tissue overlying the underlying veins. Therefore, the condition characterized by multiple fractures and blue sclera is OI. The other options, regional odontodysplasia, hyperthyroidism, and periodontal disease are conditions that may affect the teeth and gums, but do not typically cause multiple fractures and blue sclera.