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Oral Pathology > Chapter 6 > Flashcards

Chapter 6 Flashcards

1
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Germination

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2
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Fusion

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3
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Concrecences

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4
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Dilaceration

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5
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Dilaceration

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6
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Enamel Pearl

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7
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Talon Cusp

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8
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Taurodontia

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9
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Dens invaginatus

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10
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Dens evaginatus

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11
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Supernumerary tooth

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12
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Enamel hypoplasia

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13
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Developmental Trauma

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14
Q
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Trauma on premolar

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15
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Hyopocalcification

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16
Q
A

Tetracylcine stain

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17
Q
A

Erythroblastosis fetalis

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18
Q
A

caused by Neonatal disease

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19
Q
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Congenital Erythropoietic Porphyria

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20
Q
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Regional Odontodysplasia (Ghost tooth)

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21
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Impacted and embedded tooth

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22
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Impacted Embedded tooth

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23
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Ankylosed tooth

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24
Q
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Spaces are where ankylosed disidious tooth did not erupt.

(removal of decidous tooth is necessary for permenant tooth to erupt)

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25
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Hypoplasia

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26
Q
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Hypoplasia from fluoride

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27
Q

The presence of Hutchinson incisors and mulberry molars would indicate the presence of which condition?

A) Hepatitis B

B) HIV disease

C) Syphilis

D) Chickenpox

A

C) Syphilis
Congenital syphilis is transmitted from an infected mother to her fetus; teeth affected in the child include the incisors and molars. Hepatitis B does not cause any changes in the sizes of permanent teeth. HIV disease does not cause any changes in the sizes of permanent teeth. Chickenpox that occurs during the time of tooth formation may result in the pitting of enamel.

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28
Q

mpacted teeth cannot erupt because of

A) lack of eruptive force.

B) physical obstruction.

C) ankylosis.

D) bone pathology.

A

B) physical obstruction.
Impacted teeth cannot erupt because of physical obstruction. Lack of eruptive force does not play a role in eruption of impacted teeth. A tooth is ankylosed if it is fused to bone. This condition is especially common with retained deciduous teeth. Bone pathology can affect the eruption of teeth, but it is not the main reason that impacted teeth do not erupt.

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29
Q

Deciduous teeth in which bone has fused to cementum and dentin, preventing exfoliation of the deciduous tooth and eruption of the underlying permanent tooth are termed
a. embedded.

b. ankylosed.
c. impacted.
d. erupted.

A

b. ankylosed.
A tooth is ankylosed if it is fused to bone. This condition is especially common with retained deciduous teeth. Embedded teeth do not erupt because of a lack of eruptive force. Impacted teeth cannot erupt because of physical obstruction. Erupted teeth are not fused to cementum and dentin.

30
Q

What is a condition likely to reveal ankylosed teeth?

A) Presence of a dentigerous cyst

B) Existence of supernumerary teeth

C) Orthodontic appliances

D) Retained deciduous teeth

A

D) Retained deciduous teeth
Ankylosed teeth are fused to the alveolar bone, a condition especially common with deciduous teeth. A dentigerous cyst surrounds the crown of an unerupted or impacted tooth. Supernumerary teeth are not associated with ankylosed teeth. Orthodontic appliances are not associated with ankylosed teeth.

31
Q

Radiographically, this radiolucent cyst is often heart shaped, caused by the anatomic Y shape of the area. It is called the _____ cyst.

A) nasopalatine canal

B) median palatine

C) nasolabial

D) globulomaxillary

A

A) nasopalatine canal
The nasopalatine canal cyst is often heart shaped. The median palatine cyst appears as a well-defined unilocular radiolucency in the midline of the palate. The nasolabial cyst is a soft tissue cyst with no alveolar bone involvement. The globulomaxillary cyst is a well-defined pear-shaped radiolucency found between the roots of the maxillary lateral and cuspid.

32
Q

The _____ cyst has a strong predilection for females.

A) lateral periodontal

B) nasopalatine canal

C) nasolabial

D) gingival

A

C) nasolabial
The nasolabial cyst has a strong predilection for females. The lateral periodontal cyst is most often found in males. The nasopalatine canal cyst has a predilection for males. The gingival cyst has no sex predilection.

33
Q

The pear-shaped radiolucency observed in this radiographic image is most likely a _____ cyst.

A) radicular

B) globulomaxillary

C) lateral periodontal

D) nasopalatine canal

A

B) globulomaxillary
The globulomaxillary cyst is a pear-shaped radiolucency found between the roots of a maxillary lateral and cuspid. The radicular cyst is a root end cyst found at the apex of a tooth that is usually involved with caries. A lateral periodontal cyst is usually found between the roots of the mandibular cuspid and premolar. The nasopalatine canal cyst is usually heart shaped and found near the apices of the maxillary centrals, lingual aspect.

34
Q

Periapical radiographic examination reveals a well-defined unilocular radiolucency located in the midline of the hard palate.

The diagnosis is _____ cyst.

A) nasolabial

B) globulomaxillary

C) branchial cleft

D) median palatine

A

D) median palatine
A median palatine cyst is a well-defined unilocular radiolucency located in the midline of the hard palate. A nasolabial cyst is a soft tissue cyst with no alveolar bone involvement. A globulomaxillary cyst is a well-defined, pear-shaped radiolucency found between the roots of the maxillary lateral incisor and cuspid. A branchial cleft cyst is located on the lateral neck at the anterior border of the sternocleidomastoid muscle.

35
Q

The pseudocyst seen in this radiographic image is surrounded by salivary gland tissue.

It is a(n) _____ bone cyst.

a. simple
b. Stafne
c. traumatic
d. aneurysmal

A

b. Stafne
A Stafne bone cyst is a pseudocyst surrounded by salivary gland tissue. A simple bone cyst is the same as a traumatic bone cyst and is characterized by a radiolucent lesion that scallops around the roots of teeth. A traumatic bone cyst is the same as a simple bone cyst. An aneurysmal bone cyst is a pseudocyst that consists of blood-filled spaces surrounded by multinucleated giant cells and fibrous connective tissue.

36
Q

Which is not considered a pseudocyst?

A) Thyroglossal tract cyst

B) Static bone cyst

C) Simple bone cyst

D) Aneurysmal bone cyst

A

A) Thyroglossal tract cyst
The thyroglossal tract cyst can be lined by various types of epithelia. The static bone cyst is not lined with epithelium. The simple bone cyst is not lined with epithelium. An aneurysmal bone cyst is a pseudocyst that contains blood-filled spaces surrounded by multinucleated giant cells and fibrous connective tissue.

37
Q

Which term describes partial anodontia or the lack of one or more teeth?

a. Anodontia
b. Ankylosed
c. Hypodontia
d. Gemination

A

c. Hypodontia
Hypodontia defines partial anodontia or the lack of one or more teeth. Anodontia is the congenital lack of teeth. Ankylosed teeth are those fused to alveolar bone, usually retained deciduous teeth. Gemination occurs when a single tooth germ attempts to divide, resulting in the incomplete formation of two teeth.

38
Q

Total anodontia is often associated with a hereditary disturbance termed

A) taurodontism.

B) amelogenesis imperfecta.

C) ectodermal dysplasia.

D) cleidocranial dysplasia.

A

C) ectodermal dysplasia.
Total anodontia may be associated with a hereditary disturbance called ectodermal dysplasia. Taurodontism is a genetic heterogeneous condition characterized by very large, pyramid-shaped molars with large pulp chambers. Amelogenesis imperfecta is a group of inherited conditions affecting the enamel of teeth. In cleidocranial dysplasia, the patient has numerous supernumerary teeth.

39
Q

The following groups of teeth are most often missing with hypodontia except one. Which is the exception?

A) Third molars

B) Mandibular canines

C) Maxillary lateral incisors

D) Mandibular second premolars

A

B) Mandibular canines
The mandibular canines are not typically missing in a case of hypodontia. The teeth most often missing with hypodontia include the maxillary and mandibular third molars. The teeth most often missing with hypodontia include the maxillary lateral incisors. The teeth most often missing with hypodontia include the mandibular second premolars.

40
Q

Which term is unlike the others?

a. Distomolar
b. Supernumerary
c. Hypodontia
d. Mesiodens

A

c. Hypodontia
Hypodontia refers to a lack of one or more teeth. A distomolar is an extra tooth, also known as a maxillary fourth molar. Supernumerary is a term to describe extra teeth found in the dental
arches. A mesiodens is a supernumerary tooth located between the maxillary central incisors at the midline.

41
Q

Your patient presents with several horizontal rows of deep pits traversing the surfaces of the permanent central and lateral incisors, canines, and first molars. The pits are stained and unsightly. Which condition is suspected?

A) Dens in dente

B) Concrescence

C) Enamel hypoplasia

D) Oligodontia

A

C) Enamel hypoplasia
Enamel hypoplasia is the incomplete or defective formation of enamel, causing the alteration of tooth form or color. Dens in dente is a developmental anomaly that results when the enamel organ invaginates into the crown of a tooth before mineralization. Concrescence is a condition in which two adjacent teeth are united by cementum. Oligodontia is a term describing a type of hypodontia in which six or more teeth are congenitally missing.

42
Q

The most common supernumerary tooth is termed

A) distomolar.

B) mesiodens.

C) mulberry molar.

D) Turner tooth.

A

B) mesiodens.
The mesiodens is the most common supernumerary tooth. The second most common supernumerary tooth is the fourth molar or distomolar. The mulberry molar is seen in congenital syphilis. A Turner tooth is a permanent tooth exhibiting enamel hypoplasia, the result of infection of the deciduous tooth.

43
Q

The supernumerary tooth in this illustration is

A) a mesiodens.

B) a dilaceration.

C) the result of twinning.

D) the result of gemination.

A

A) a mesiodens.
A mesiodens is a supernumerary tooth found between the maxillary central incisors. Dilaceration is a sharp bend or curve in the root of a tooth. Twinning is when a single tooth germ attempts to divide. Gemination is the same as twinning (i.e., a single tooth germ attempts to divide).

44
Q

The projection of white material seen at the furcation area in this maxillary molar is a developmental anomaly. Which condition is suspected?

A) Dens evaginatus

B) Enamel pearl

C) Supernumerary cusp

D) Calculus

A

B) Enamel pearl
The enamel pearl is a projection of enamel caused by abnormal displacement of ameloblasts during tooth formation. It is found near the furcation in maxillary molars. Dens evaginatus is an accessory enamel cusp found on the occlusal surfaces of mandibular premolars. A supernumerary cusp would be on or near the occlusal surface. Calculus is not a developmental anomaly.

45
Q

Regional odontodysplasia is also referred to as

A) hypodontia.

B) ghost teeth.

C) taurodontism.

D) supernumerary teeth.

A

B) ghost teeth.
Regional odontodysplasia is also referred to as ghost teeth. Hypodontia is the lack of one or more teeth. Taurodontism is a term used to describe a developmental anomaly in which teeth exhibit elongated large pulp chambers and short roots. Supernumerary teeth are extra teeth (more than the normal number) found in the dental arches.

46
Q

icrodontia most commonly occurs in

A) maxillary laterals and third molars.

B) maxillary canine.

C) mandibular molars.

D) mandibular incisors and molars.

A

A) maxillary laterals and third molars.
Microdontia most commonly occurs in maxillary laterals and third molars. Microdontia does not commonly occur in the maxillary canine. Microdontia does not commonly occur in the mandibular molars. Microdontia does not commonly occur in the mandibular incisors and molars.

47
Q

Which teeth are most commonly affected by microdontia?

A) #7 and #16

B) #10 and #17

C) #17 and #24

D) #25 and #31

A

A) #7 and #16
The maxillary lateral incisor and maxillary third molar are the teeth most commonly affected by microdontia.

48
Q

Which statement about macrodontia is true?

A) A common developmental anomaly.

B) Commonly affects a single tooth.

C) Seen in cases of pituitary gigantism.

D) Treatment involves extraction and prosthetic replacement.

A

C) Seen in cases of pituitary gigantism.
Macrodontia is seen occasionally in cases of pituitary gigantism. Macrodontia is an uncommon developmental anomaly in which one or more teeth are larger than normal. Macrodontia affecting a single tooth is uncommon. No treatment is indicated for macrodontia.

49
Q
A

Focal Palmoplantar

50
Q
A

Papillon-Lefevre

51
Q
A

Hypocalcified Amelogensis Imperfecta

52
Q
A

Type II Amelogenesis Imperfecta

53
Q
A

Amelogenesis Imperfects

54
Q
A

Peutz-Jeghers Syndrome

55
Q
A

Neurofibromatosis of von Recklinghausen

56
Q
A

MEN 2B Syndrome (Multiple Mucosal Neuroma Syndrome)

57
Q
A

Hemorrhagic Telangiectasia

58
Q
A

Cleft Lip-palate and congenital lip pits

59
Q
A

Osteogenesis Imperfecta

60
Q
A

Nevoid Basal Cell Carcinoma - see nevices on the skin

61
Q
A

Mandibulofacial Dystosis

62
Q
A

Gardner Syndrome

63
Q
A

Ellis-van Creveld Syndrome

64
Q
A

Cherubism

65
Q
A

Type III “Snowcapped” Amelogenesis Imperfecta

66
Q
A

Dentinogenesis Imperfecta

67
Q
A

Dentinogenesis imperfecta xray

68
Q
A

Dentin Dysplasia, abnormal roots

69
Q
A

Dentinogenesis imperfecta Type II

70
Q
A

Hypohidrotic Ectodermal Dysplasia

71
Q
A

Taurodontism

Oral Pathology (14 decks)

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