An Overview of Dental Anatomy

How many teeth comprise the primary dentition? A. 15 B. 20 C. 30 D. 32

20

Which surface is known as the chewing surface of posterior teeth? A. Occlusal B. Lingual C. Mesial D. Distal

Occlusal

The area from the CEJ to the cusp tip is known as ____________________. A. clinical crown B. anatomical crown C. root canal D. apex of the crown

Anatomic Crown

Which one is the tooth components has an equivalent hardness to bone? A. Cementum B. Enamel C. Dentin D. Dentin tubules

Cementum

The inter and outer surfaces of the alveolar bone are made up of _______________. A. Spongy bone B. Cortical plates C. Cementum D. Oblique fibers

Cortical plates

The top surface of the tongue is known as the ___________ surface. A. Ventral B. Dorsal C. Median D. Lateral

Dorsal

What is the hardest substance in the body? A. Enamel B. Cementum C. Pulp D. Dentin

Enamel

Which tissue in the periodontium is not attached to the tooth and forms a collar around the tooth? A. Attached gingiva B. Marginal gingiva C. Free gingiva D. Gingival ligament

Free gingiva

Which of the following bones form the forehead? A. Nasal B. Frontal C. Parietal D. Ethmoid

Frontal

Which teeth have a cutting edge? A. Incisors B. Premolars C. Bicuspids D. Molars

Incisors

The wall of the tooth socket is lined by what type of bone? A. Trabecular B. Dentin C. Lamina dura D. Cancellous

Lamina Dura

A dentition that is not aligned in a normal functional relationship is termed as in ______________? A. nonfunctionabality B. malocclusion C. mass occlusion D. dominant occlusion

Malocclusion

Which arch in the mouth contains 16 teeth? A. Maxillary B. Mandibular C. Lateral D. Maxillary and Mandibular

Maxillary and Mandibular arch

Which teeth are responsible for grinding food? A. Primary incisors B. Molars C. Canines D. Premolars

Molars

The tooth is attached to the underlying bone through which of the following? A. Periodontal fibers B. Attached gingiva C. Cementum fibers D. Bone projections

Periodontal fibers

The midline depression above the upper lip is known as? A. Philtrum B. Septum C. Labiomental Groove D. Tubercle of the Lip

Philtrum

Which tooth appears in the permanent dentition but not in the primary dentition? A. Molars B. Lateral incisors C. Central incisors D. Premolars

Premolars

Which type of substance in the tooth continues to grow throughout the lifetime of the tooth? A. Cementum B. Enamel C. Secondary Dentin D. Nerves and Blood Vessels

Secondary Dentin

What is the non-bony portion of the palate known as? A. Hard Palate B. Frenum C. Vestibule D. Soft Palate

Soft Palate

The ___________________ is a nonbony muscular projection that hangs from the midline at the posterior of the soft palate. A. Frenum B. Septum C. Tori D. Uvula

Uvula