Dental OSCE (Objective Structured Clinical Examination) Practice Exam

What condition is characterized by white stains on teeth?

1. Dental caries

2. Fluorosis

3. Chalky enamel

4. Acid erosion

The correct answer is: Fluorosis

The presence of white stains on teeth is commonly associated with dental fluorosis. This condition occurs when there is excessive fluoride exposure during the early years of tooth development, typically up to the age of six. The fluoride interferes with the normal development of enamel, leading to a change in its appearance. Instead of a smooth, shiny surface, the enamel may appear mottled or show white spots, which are the hallmark signs of this condition. Fluorosis typically manifests as milder forms of discoloration, but in more severe cases, it can lead to brown stains or surface irregularities. The key distinguishing feature of fluorosis is the specific type of white staining that occurs as a result of fluoride overexposure during the critical developmental stages of the teeth. Other conditions, such as dental caries, are associated with tooth decay and cavitation, which would not present as white stains. Chalky enamel, while it may describe enamel hypoplasia or other enamel defects, does not specifically refer to the white stains indicative of fluorosis. Acid erosion involves the wearing away of the enamel due to acidic substances and does not typically present as white spots, but rather as shiny, smooth surfaces or discoloration due to enamel loss. Thus, the characteristic