Question

Crown of teeth is covered by
A. Dentine
B. Enamel
C. Both A and B
D. None of the above

Answer 1

Hint: The function of human teeth is to break down the food into smaller pieces. In the medical field of dentistry, the word crown of teeth refers to the anatomical area of the teeth. The roots of the teeth are embedded in the maxilla and mandible.

Complete answer: The human tooth is made up of tissues: enamel, dentine, cementum, and dental pulp. The crown of the teeth is covered by a substance called enamel. It is the hardest substance found in the human body. Enamel has its origin from ectoderm and is a highly mineralized substance. The part of the teeth which is covered by enamel is known as the crown. The crown is the visible portion of the teeth. The enamel covering the crown is made up of minerals, water, and organic materials. The enamel of the teeth is supported by the underlying part of the teeth called dentine. Dentine is the porous yellow color substance present between the enamel and the cementum of the teeth. It is formed by the odontoblasts of the dental pulp. The probability of dentine decaying is more than the enamel as it is a soft tissue as compared to enamel. The root of the teeth is covered by a special bone called cementum. The central part of the teeth made up of soft connective tissue is called the dental pulp.

So, option B is the correct option.

Note: The calcium content present in the enamel makes it harder in nature. The tooth enamel consists of the highest percentage of minerals in the body that is 96%. Hydroxyapatite is the primary mineral found in the enamel tissue of the teeth. It is a crystalline form of calcium phosphate.