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