Deck 27: Normal Anatomy: Intraoral Images

Question 1

The median palatal suture is located between the two __________ of the maxilla.

A)inferior nasal conchae
B)nasal cavities
C)palatine processes
D)maxillary sinuses

Answer 1

palatine processes

Question 2

This foramen is almond shaped and is located between the apices of the maxillary central incisors.

A)Mental
B)Lingual
C)Superior
D)Incisive

Answer 2

Incisive

Question 3

On a periapical image,the median palatal suture appears as a thin __________ line between the _________________.

A)radiopaque;maxillary lateral incisor and cuspid
B)radiolucent;maxillary lateral incisor and cuspid
C)radiopaque;maxillary central incisors
D)radiolucent;maxillary central incisors

Answer 3

radiolucent;maxillary central incisors

Question 4

The ____________ nerve exits the maxilla through the incisive foramen.

A)anterior superior alveolar
B)middle superior alveolar
C)posterior superior alveolar
D)nasopalatine

Question 5

The _________ the trabeculations,the _______ radiolucent the area of cancellous bone appears.

A)smaller;more
B)larger;more
C)larger;less
D)both a and b

Question 6

A suture is a(n)

A)movable joint between any two bones in the body.
B)immovable joint between any two bones in the body.
C)movable joint between two bones in the skull.
D)immovable joint between two bones in the skull.

Question 7

On a periapical image,the maxillary sinuses appear as radiolucencies located superior to the apices of the

A)maxillary canines.
B)maxillary central incisors.
C)maxillary molars and premolars.
D)maxillary incisors and canines.

Question 8

An empty space within the bone is known as a

A)canal.
B)foramen.
C)fossa.
D)sinus.

Question 9

Compact bone is also called __________ bone.

A)trabecular
B)spongy
C)cancellous
D)cortical

Question 10

A pointed,spikelike protrusion of bone is a

A)process.
B)ridge.
C)spine.
D)tubercle.

Question 11

The superior foramina of the incisive canal are _____ tiny openings or holes in bone.

A)two
B)four
C)six
D)eight

Question 12

(1)Cancellous bone is considered radiopaque.(2)Cortical bone is considered radiolucent.

A)Both statements are true.
B)Both statements are false.
C)The first statement is true;the second statement is false.
D)The first statement is false;the second statement is true.

Question 13

A foramen is a(n)

A)opening or hole in bone that permits the passage of nerves and blood vessels.
B)broad,shallow,scooped-out or depressed area of bone.
C)hollow space,cavity,or recess in bone.
D)sharp,thornlike projection of bone.

Question 14

The superior foramina of the incisive canal are located on the __________ of the nasal cavity.

A)lateral wall
B)medial wall
C)floor
D)roof

Question 15

Which of the following describes a ridge?

A)Linear protrusion of bone
B)Sharp,thornlike projection of bone
C)Small nodular bone
D)Rounded prominence

Question 16

On a _________ periapical image,the nasal fossa appears as a large ______________ area located above the roots of the maxillary incisors.

A)maxillary;radiopaque
B)maxillary;radiolucent
C)mandibular;radiopaque
D)mandibular;radiolucent

Question 17

Which of the following landmarks would appear radiolucent on a dental image?

A)Septum
B)Suture
C)Tubercle
D)Tuberosity

Question 18

Cancellous bone is the soft,________ bone located between two layers of _______ cortical bone.

A)spongy;spongy
B)dense;dense
C)spongy;dense
D)dense;spongy

Question 19

Which type of bone is composed of bony trabeculae?

A)Cortical
B)Dense
C)Compact
D)Cancellous

Question 20

A _________ is a bony wall or partition that divides two spaces or cavities.

A)process
B)ridge
C)septum
D)spine

Question 21

On a maxillary periapical image,the zygomatic process appears as a __________ to the maxillary first molar region.

A)radiolucency located inferior
B)radiopacity located superior
C)radiolucency located superior
D)radiopacity located inferior

Question 22

On a dental image,the lateral fossa appears as a __________ area of ____________ appearance,depending on the anatomy of the individual.

A)radiopaque;consistent
B)radiolucent;consistent
C)radiopaque;variable
D)radiolucent;variable

Question 23

On a maxillary periapical image,the floor of the nasal cavity appears as a ________ band of bone ________ the maxillary incisors.

A)radiolucent;above
B)radiolucent;below
C)radiopaque;above
D)radiopaque;below

Question 24

The lateral walls of the nasal cavity are formed by the __________ bone and the maxillae.

A)temporal
B)sphenoid
C)ethmoid
D)zygomatic

Question 25

The anterior nasal spine is located at the _____________ portion of the nasal cavity.

A)anterior and superior
B)anterior and inferior
C)posterior and superior
D)posterior and inferior

Question 26

On a periapical image,the genial tubercles appear as a ring-shaped __________ the apices of the mandibular incisors.

A)radiolucency below
B)radiolucency above
C)radiopacity below
D)radiopacity above

Question 27

On a maxillary periapical image,the inferior nasal conchae appear as a __________ mass within the nasal cavity.

A)well-demarcated radiolucent
B)well-demarcated radiopaque
C)diffuse radiolucent
D)diffuse radiopaque

Question 28

The inverted Y is a __________ line above the maxillary _________.

A)radiopaque;canine
B)radiopaque;first molar
C)radiolucent;canine
D)radiolucent;first molar

Question 29

The inverted Y refers to the intersection of the maxillary sinus and the

A)median palatal suture.
B)anterior nasal spine.
C)incisive foramen.
D)nasal cavity.

Question 30

The lateral fossa is located between the

A)maxillary canine and lateral incisor.
B)mandibular canine and lateral incisor.
C)maxillary canine and first premolar.
D)mandibular canine and first premolar.

Question 31

On a maxillary periapical image,the anterior nasal spine appears as a ____-shaped radiopaque area located at the intersection of the floor of the nasal cavity and the nasal septum.

A)T
B)U
C)V
D)I

Question 32

Which muscles attach to the genial tubercles?

A)Digastric and genioglossus
B)Genioglossus and geniohyoid
C)Geniohyoid and digastric
D)Mylohyoid and geniohyoid

Question 33

Your patient is looking at her dental images and is pointing to the bilateral vertical section of the mandible.What is she pointing to?

A)Ramus
B)Coronoid process
C)Body
D)Alveolar process

Question 34

The superior foramina of the nasopalatine canal are located above the maxillary ____________.

A)central incisors
B)lateral incisors
C)canines
D)premolars and molars

Question 35

The inferior nasal conchae extend from the

A)medial walls of the maxillary sinus.
B)lateral walls of the maxillary sinus.
C)medial walls of the nasal cavity.
D)lateral walls of the nasal cavity.

Question 36

Bony septa and nutrient canals may be seen within the walls of the

A)median palatal suture.
B)maxillary sinus.
C)incisive foramen.
D)anterior nasal spine.

Question 37

The lingual foramen is in the center of the

A)mental foramen.
B)genial tubercles.
C)anterior nasal spine.
D)external oblique ridge.

Question 38

The maxillary tuberosity appears as a ___________ rounded prominence posterior to the ________ molar region.

A)radiolucent;first
B)radiolucent;third
C)radiopaque;first
D)radiopaque;third

Question 39

On a maxillary periapical image,the nasal septum may be superimposed over the

A)canine.
B)median palatal suture.
C)greater palatine foramen.
D)genial tubercles.

Question 40

The hamulus extends from the

A)medial pterygoid plate of the sphenoid bone.
B)lateral pterygoid plate of the sphenoid bone.
C)styloid process.
D)maxillary tuberosity.

Question 41

On a dental image,the mylohyoid ridge is a ___________ band that may appear to be continuous with the ______________.

A)radiolucent;internal oblique ridge
B)radiolucent;external oblique ridge
C)radiopaque;internal oblique ridge
D)radiopaque;external oblique ridge

Question 42

On a mandibular periapical image,the mandibular canal is a ___________ band that appears below or superimposed over the apices of the mandibular _________ teeth.

A)radiolucent;incisor
B)radiolucent;molar
C)radiopaque;incisor
D)radiopaque;molar

Question 43

Your patient is pointing to the mental ridge on his dental image.He is pointing to the ____________________ portion of the mandible.

A)external surface of the anterior
B)internal surface of the anterior
C)external surface of the posterior
D)internal surface of the posterior

Question 44

The internal oblique ridge extends from the third molar region to the ____________ area.

A)canine
B)first molar
C)incisor area
D)second premolar

Question 45

The mental fossa is located ________ the mental ridge in the mandibular __________ region.

A)above;incisor
B)below;incisor
C)above;premolar
D)below;premolar

Question 46

On a dental image,the alveolar crest is typically located _________ mm below the junction of the crown and the root surfaces.

A)0.5 to 1.0
B)1.5 to 2.0
C)2.0 to 3.0
D)1.5 to 3.0

Question 47

On a periapical image,the submandibular fossa appears as a ___________ area in the molar region _______ the mylohyoid ridge.

A)radiopaque;above
B)radiopaque;below
C)radiolucent;above
D)radiolucent;below

Question 48

The ______________ is the space between the alveolar bone and the tooth,it contains the attachment fibers.

A)alveolar crest
B)residual ridge
C)periodontal ligament space
D)lamina dura

Question 49

On a mandibular molar periapical image,the external oblique ridge appears as a _______________ band extending _______________________ from the anterior border of the ramus of the mandible.

A)radiopaque;upward and backward
B)radiolucent;upward and backward
C)radiopaque: downward and forward
D)radiolucent: downward and forward

Question 50

Interdental nutrient canals are most often seen in the

A)anterior maxilla.
B)anterior mandible.
C)posterior maxilla.
D)posterior mandible.

Question 51

Nutrient canals appear as ______________ lines on a periapical image.

A)vertical radiolucent
B)horizontal radiolucent
C)vertical radiopaque
D)horizontal radiopaque

Question 52

The external oblique ridge typically ends in the _____________ molar region.

A)maxillary first
B)mandibular first
C)maxillary third
D)mandibular third

Question 53

The ____________ is an opening or hole in bone located on the external surface of the mandible in the region of the mandibular premolars.

A)nutrient canal
B)mental fossa
C)lingual foramen
D)mental foramen

Question 54

The ______________ is found in the submandibular fossa.

A)inferior alveolar nerve
B)submandibular salivary gland
C)mylohyoid muscle
D)lingual nerve

Question 55

The coronoid process may be seen on a ______________ periapical image.

A)maxillary incisor
B)maxillary molar
C)mandibular incisor
D)mandibular molar

Question 56

On a dental image,the mental ridge often appears superimposed over the ___________ teeth.

A)maxillary anterior
B)maxillary posterior
C)mandibular anterior
D)mandibular posterior

Question 57

Which of the following tooth structures is most radiopaque?

A)Enamel
B)Dentin
C)Cementum
D)Pulp

Question 58

The mental foramen is frequently misdiagnosed as a _____________ because of its apical location.

A)dentigerous cyst
B)radicular cyst
C)periapical granuloma
D)odontoma

Question 59

Which of the following tooth structures is most radiolucent?

A)Enamel
B)Dentin
C)Cementum
D)Pulp

Question 60

The conduit that extends from just below the ramus to the premolar region of the mandible is the

A)external oblique ridge.
B)mylohyoid ridge.
C)submandibular fossa.
D)mandibular canal.

Question 61

Identify the radiolucent area the arrows are pointing to.

A)Mental fossa
B)Periodontal pocket
C)Mental ridge
D)Nutrient canal

Question 62

Identify this landmark.

A)Maxillary tuberosity
B)Zygoma
C)Maxillary sinus
D)Mylohyoid bone

Question 63

Identify the radiopaque area the arrows are pointing to.

A)Maxillary sinus
B)Lateral pterygoid plate
C)Orbit
D)Zygoma

Question 64

Your patient's mother is concerned because her two-year-old son doesn't have all of his teeth.What should you tell her?

A)Your son is late in his eruption pattern.They should have all erupted a year ago.
B)If your son's teeth don't all erupt in the next month,we will refer him.
C)We need to take dental images to see if he has his teeth under the tissue.
D)Don't worry,his teeth should be in by the time he is three.

Question 65

Identify the radiopaque area the arrows are pointing to.

A)Maxillary tuberosity
B)Coronoid process
C)Condyle
D)Spine

Question 66

On a dental image,the periodontal ligament space (PDL)space appears as a _____________ line around the root of a tooth.

A)thin,radiopaque
B)thin,radiolucent
C)wide,radiopaque
D)wide,radiolucent

Question 67

The alveolar crest in the posterior region tends to appear ______ dense and ______ radiopaque than the alveolar crest seen in the anterior region.

A)less;less
B)more;more
C)less;more
D)more;less

Question 68

What are the arrows pointing to?

A)Periodontal abscess
B)Incisive foramen
C)Lateral fossa
D)Periapical abscess

Question 69

Identify this landmark on your patient's dental image.

A)Lateral pterygoid plate
B)Maxillary tuberosity
C)Zygoma
D)Maxillary sinus

Question 70

What is the arrow pointing to on your patient's dental image?

A)Periapical abscess
B)Trabecular bone
C)Mental foramen
D)Periodontal abscess

Question 71

Identify this landmark.

A)Incisive foramen
B)Nasal fossa
C)Nasal septum
D)Nasal spine

Question 72

Identify this landmark.

A)External oblique ridge
B)Submandibular fossa
C)Mylohyoid ridge
D)Mandibular canal

Question 73

Identify this landmark.

A)Genial tubercles
B)Mental ridge
C)Mental fossa
D)Mylohyoid ridge

Question 74

Identify the landmark the arrows are pointing to on your patient's dental image.

A)Nose
B)Incisive foramen
C)Midpalatine suture
D)Lateral fossa

Question 75

Identify the area the arrows are pointing to on your patient's dental image.

A)Mandibular canal
B)Submandibular fossa
C)Mylohyoid ridge
D)Border of the mandible