Oral Anatomy: Ch. 2 WB

T/F : The cervical area of the root is covered with enamel.

False. The root is covered with cementum.

T/F: Dentin is contained within the crown and the root of a tooth.

True

T/F: Cementum has some ability to reproduce itself.

True

T/F: Pulp tissue contains odontoblasts.

True

T/F: An alveolus is a bony tooth socket.

True

T/F: The mandibular alveolar process surrounds the lower teeth.

True

T/F: The mesiodistal angle is a line angle

False. These surfaces do not meet at a (line) junction.

T/F: The biting area of a posterior tooth is the occlusal surface.

True

T/F: Mesiobuccal is an anterior line angle

False. It is a posterior line angle.

T/F: The labiobuccoincisal angle is a point angle.

False. There is no such term.

T/F: There are four anterior point angles.

True

T/F: A transverse ridge is two triangular ridges joined together.

True

T/F: All teeth have at least one cusp.

False. Cusps are not found on incisors.

T/F: Anterior and posterior teeth can have triangular ridges.

False. Anterior teeth do not have triangular ridges.

T/F: A cingulum is an elevation on the lingual surface of any anterior tooth.

True

Cutting, or incising, food.

Incisors

Shoveling food into the mouth.

Incisors

Holding

Canines

Grinding

Premolars and molars

Tearing

Canines

Holding and crushing food

Premolars

Resisting lateral forces of displacement.

Canines

Distolabial

Anterior tooth line angle

Distoocclusal

Posterior tooth line angle

Distolabioincisal

Anterior tooth point angle

Distolinguoocclusal

Posterior tooth line angle

Mesiolingual

Anterior and posterior tooth line angle

Linguoincisal

Anterior tooth line angle

Enamel is thickest at the

a. CEJ

b. Lateral borders of the tooth

c. Incisal edge or ridge

d. Middle third of the tooth

C. Incisal edge or ridge

If a molar has three roots it would have ______ pulp chamber(s)

a. One

b. Two

c. Three

d. No

A. One

The pulp contains all except

a. Blood vessels

b. Nerves

c. Lymph vessels

d. Ameloblasts

D. Ameloblasts

______ is composed of 70% inorganic matter

a. Enamel

b. Dentin

c. Cementum

d. Pulp

B. Dentin

Which is not a depression?

a. Fossa

b. Pit

c. Groove

d. Oblique ridge

D. Oblique ridge

Which tooth is formed from more than four lobes?

a. Maxillary central incisor

b. Mandibular canine

c. Maxillary first premolar

d. Mandibular first molar

D. Mandibular first molar

A small elevation of enamel that may be found on tooth surfaces is a:

a. Cusp

b. Tubercle

c. Sulcus

d. Fossa

B. Tubercle

How many marginal ridges do teeth have:

a. It depends on the specific tooth

b. One

c. Two

d. Four

C. Two