Dental Dental Anatomy 2

Question 1

What is dentin?

Accepted Answer

The layer beneath enamel making up most of the tooth structure, softer than enamel but harder than bone

Answer

Dentin forms the bulk of the tooth structure. It is yellowish, slightly elastic, and contains microscopic tubules that can transmit pain sensations.

Question 2

What is the gingiva?

Accepted Answer

The gum tissue that surrounds and supports the teeth

Answer

The gingiva (gums) is the mucous membrane that covers the alveolar bone and surrounds the necks of the teeth, forming a seal to protect underlying structures.

Question 3

What are deciduous teeth?

Accepted Answer

Primary (baby) teeth that are eventually replaced by permanent teeth

Answer

Deciduous (primary) teeth number 20 and begin erupting around 6 months of age. They are progressively replaced by permanent teeth starting around age 6.

Question 4

What is the Universal Numbering System for teeth?

Accepted Answer

A numbering system (1-32) starting from the upper right third molar going around to the lower right third molar

Answer

In the Universal system, teeth are numbered 1-32 starting from the upper right third molar (#1), moving left across the top to #16, then down to the lower left #17, ending at lower right #32.

Question 5

What is the function of cementum?

Accepted Answer

It covers the tooth root and helps anchor the tooth to the bone via the periodontal ligament

Answer

Cementum is a calcified tissue covering the tooth root that provides attachment for the periodontal ligament fibers connecting the tooth to the alveolar bone.

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Dental Dental Anatomy 2