Dental Admissions Test (DAT) Practice Test

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Prepare for the Dental Admissions Test (DAT) with our comprehensive practice test. Study effectively with flashcards and multiple-choice questions, each with detailed hints and explanations. Get ready to ace your exam and secure your future in dentistry!

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What is the main mineral found in enamel?

Calcium carbonate
Hydroxyapatite
Fluoride
Calcium phosphate

The correct answer is: Hydroxyapatite

The main mineral found in enamel is hydroxyapatite, which is a naturally occurring mineral form of calcium apatite. Hydroxyapatite is a crystalline structure that comprises a significant portion of dental enamel's composition. Enamel is the hardest substance in the human body and serves as a protective layer over the teeth. The presence of hydroxyapatite provides enamel with its strength and durability, making it capable of withstanding the pressures of biting and chewing. Additionally, hydroxyapatite contributes to the enamel's resistance against tooth decay and is vital for maintaining the overall health of the teeth. While calcium phosphate is also relevant to the composition of enamel, hydroxyapatite is the specific form that is predominantly present and provides the enamel with its unique properties. Fluoride, on the other hand, is important for enamel health as it can help remineralize and strengthen enamel but does not constitute the main mineral in its structure. Lastly, calcium carbonate is not a primary component of enamel; instead, it is more commonly found in other parts of the body such as bones and certain types of dental calculus.