Ch. 11 & 12 Overview of Dentition and Tooth Morphology

In the Universal/National Numbering System, the four second permanent molars are

#2. #15, #18, and #31

In the Universal/National Numbering System, the permanent maxillary first premolars are

#5 and #12

How many premolars are there in the primary dentition

0

How many canines are in a quadrant of the permanent dentition

1

Using the Universal/National Teeth-Numbering System, what are the numbers for the permanent third molars?

1, 16, 17, 32

There are _______ teeth in each arch of the primary dentition

10

If a dentist uses the ISO numbering system and charts #11, #12, #53, #54, and #18 teeth as being present in the patient's mouth, approximately what is the age of the patient?

10 to 12

How many molars are present in the permanent dentition

12

How many nonsuccedaneous teeth are there in the adult dentition?

12

How many premolars are in each quadrant of the permanent dentitions

2

How many quadrants are there in the mandibular dentition

2

How many premolars are in one arch of the permanent dentition

4

According to the IDO/FDI numbering system, an adult mandibular left first molar would be tooth number

46

Each quadrant of the primary dentition contains how many teeth

5

There are _______ incisor teeth in the primary dentition.

8

Which of the following statements is true of the contours of teeth

A concave surface is curved inward

Which statement is not true of the premolars

All premolars have two cusps

The _______ play an important role in a person's appearance

Anterior teeth

The primary teeth are classified in the Universal/National Teeth Numbering system using

Capital letters A through T

The _______ is located where the cusp ridges coverage at a central point, where the grooves meet on a posterior tooth

Central fossa

Which of the following anatomic features of the teeth help to maintain their position in the dental arch and protect the tissues during chewing

Contours, contacts, and embrasures

A common anomaly of the maxillary lateral incisors that is characterized by unusually large open contacts is called

Diastemas

When the Palmer Notation System (PNS) is used

Each of the four quadrants is given its own tooth bracket made up of a vertical and a horizontal line

The initiation of the mixed dentition period is marked by which of the following events

Eruption of the adult mandibular first molar

Canines are also commonly referred to as

Eyeteeth

Which of the following surfaces of the maxillary anterior teeth do you mainly see when someone smiles

Facial

Which of the following types of teeth in the primary dentition are replaced by first premolars in the adult dentition

First primary molar

Which of the following is a wide, shallow depression on the lingual surfaces of anterior teeth

Fossa

Incisiors

Have shovel-shaped lingual surfaces

A proper contact between adjacent teeth stabilizes the dental arches by

Holding teeth in positive contact with each other

In Angle class ______ occlusion, the mesiobuccal cusp of the permanent maxillary first molar occludes mesial to the mesiobuccal groove of the mandibular first molar

II

The correct order of the teeth from mesial to distal in the permanent dentition is

Incisors, canines, premolars, molars

Which of the following is true of the mandibular canine tooth

It has a less well-developed cingulum than a maxillary canine

Which of the following is true regarding differences between the maxillary and mandibular central incisors

Labial surfaces of the maxillary central incisors are more rounded from the incisal aspect than those of the mandibular central incisors

Which of the following surfaces is closet to the tongue

Lingual

The maxillary second premolar differs from the maxillary first premolar in that the

Lingual cusp is larger and almost the same height as the buccal cusp on the maxillary second premolar

The root of the maxillary lateral incisor is

Longer than the root of a central incisor

Which of the following refers to an abnormal relationship when the teeth are maxillary occluded

Malocclusion

Which of the following terms is used to describe the rounded enamel extension on the incisal edge of newly erupted central and lateral incisors

Mamelon

The teeth in the upper arch are set in the

Maxilla

Which of the following teeth may have a fifth supplemental cusp

Maxillary first molars

Which of the following premolar teeth normally has a bifurcated root

Maxillary first premolar

Which of the following teeth vary more in form more than any other teeth in the mouth except the third molars

Maxillary lateral incisors

Which of the following adult teeth is nonsuccedaneous

Maxillary right first molar

The maxillary second premolar differs from the maxillary first premolar in that the

Maxillary second premolar usually has one root

Which of the following teeth are most likely to be out of position in the dental arch

Maxillary third molars

Which term is used to describe the period when both primary teeth and permanent teeth are present at the same time in the oral cavity

Mixed

The crown of a tooth that is divided crosswise with the division being parallel to the occlusal or incisal surface of the tooth has which of the following divisions?

Occlusal third, middle third and cervical third

Which of the following teeth are posterior

Premolars and molars

The mixed dentition period ends when which of the following teeth is lost

Primary maxillary second molar

The first premolar is anterior to the _______, whereas the second premolar is anterior to the first _______

Second premolar; molar

Which of the following teeth in the permanent dentition will replace the primary second molars

Second premolars

The root of the mandibular second premolar ________ than the roots of the maxillary premolars but _______ than that of a mandibular first premolar

Shorter; longer

The mandibular central incisors are

Smaller than the mandibular lateral incisors

Which statement is not true of the maxillary canines

The lingual surface of the crown of the maxillary canine is smoother than that of the mandibular canine

Most maxillary first premolars have a root that is divided into

Two roots——-buccal and lingual

The tooth numbering system most often used in the United States is the ________ system

Universal/National

The primary teeth are identified using letters and the permanent teeth are identified using numbers with which of the following tooth numbering systems

Universal/National System

Which of the following is true of primary teeth in contrast to permanent teeth

Whiter enamel than permanent teeth

The human mouth is divided into two dental

arches

What is the canine eminence?

bony ridge

The tooth surface closest to the cheek on posterior teeth is the _____ surface.

buccal

Which of the following teeth are usually the last teeth to be lost

canines

________ are the longest teeth in the human dentition and are used for cutting and tearing

canines

Which of the following describes the maximal stable contact between the occluding surfaces of the maxillary and mandibular teeth

centric occlusion

premolars and molars are used for _______ food

chewing

The area where the mesial or distal surfaces of the tooth touch the adjacent tooth in the arch is the

contact area

The ________ is the exact spot where adjacent teeth actually touch each other

contact point

Which of the following describes the natural teeth in the dental arch

dentition

The two tooth surfaces that are proximal surfaces are the mesial and the _____.

distal

Which of the following permanent maxillary teeth normally have three roots

first molars

Which of the following teeth are the largest and strongest maxillary teeth

first molars

The relationship between the maxillary and mandibular teeth during biting and chewing movements is

functional occlusion

The _______ surface is the chewing surface on anterior teeth

incisal

The incisal plane of an anterior tooth is also known as

incisal edge

The anterior teeth include the

incisors and canines

The primary teeth are ________ in the Universal/National System

lettered with capital letters from A to T

The temporomandibular joint permits movement of the

mandible

Which of the following teeth are the smallest and most symmetric teeth in the permanent dentition

mandibular central incisors

The developmental groove that crosses marginal ridges and allows food to escape during mastication is the ______ groove

marginal

The lingual surfaces of anterior teeth have rounded, raised borders on the mesial and distal surfaces that are called

marginal ridges

Permanent _____ are nonsuccedaneous teeth.

molars

The premolars are a cross between canines and

molars

Which of the following surfaces is the chewing surface of posterior teeth

occlusal

Which of the following is the preferred term for bicuspid

premolar

Which tooth is found only in the permanent dentition

premolar

Which type of teeth are not found in the primary dentition?

premolars

The mouth can be divided into six sections called

sextants

Which of the following terms describes the permanent teeth that replace primary teeth

succedaneous

Which of the following teeth are sometimes referred to as wisdom teeth

third molars

Which of the following features of the posterior permanent dentition is associated with the termination of triangular grooves

triangular fossa