Question 1

The basic defect found with radicular dentin dysplasia lies in the

Accepted Answer

A)  stellate reticulum. 
B)  epithelial root sheath. 
C)  stratum intermedium. 
D)  dental papilla. 
A)  stellate reticulum. 
B)  epithelial root sheath. 
C)  stratum intermedium. 
D)  dental papilla. B

Question 2

For parents who are carriers of the same recessive trait, the chance of giving birth to an affected child is _____%.

Accepted Answer

A)  0 
B)  25 
C)  50 
D)  100 
A)  0 
B)  25 
C)  50 
D)  100 B

Question 3

Which statement about the hereditary opalescent form of dentinogenesis imperfecta is true?

Accepted Answer

A)  It is associated with taurodontic teeth. 
B)  Teeth have bulbous crowns with a color that varies from opalescent brown to brownish blue. 
C)  Large pulp chambers and root canals are seen on radiographs. 
D)  Roots are long and thick with periapical radiopacities. 
A)  It is associated with taurodontic teeth. 
B)  Teeth have bulbous crowns with a color that varies from opalescent brown to brownish blue. 
C)  Large pulp chambers and root canals are seen on radiographs. 
D)  Roots are long and thick with periapical radiopacities. B

Question 4

Snow-capped amelogenesis imperfecta is a variation of type _____ amelogenesis imperfecta.

Accepted Answer

A)  I: hypoplastic 
B)  II: hypocalcified 
C)  III: hypomaturation 
D)  IV: hypoplastic-hypomaturation 
A)  I: hypoplastic 
B)  II: hypocalcified 
C)  III: hypomaturation 
D)  IV: hypoplastic-hypomaturation

Question 5

Genetic heterogeneity can cause amelogenesis imperfecta because of its inheritance pattern (X-linked, autosomal recessive, or autosomal dominant).

Accepted Answer

A)  Both the statement and reason are correct and related. 
B)  Both the statement and reason are correct but not related. 
C)  The statement is correct, but the reason is not. 
D)  The statement is not correct, but the reason is correct. 
E)  Neither the statement nor the reason is correct. 
A)  Both the statement and reason are correct and related. 
B)  Both the statement and reason are correct but not related. 
C)  The statement is correct, but the reason is not. 
D)  The statement is not correct, but the reason is correct. 
E)  Neither the statement nor the reason is correct.

Question 6

Hypohidrotic ectodermal dysplasia is characterized by

Accepted Answer

A)  hypodontia, hypotrichosis, and hypohidrosis. 
B)  hyperdontia, hypotrichosis, and hypohidrosis. 
C)  hypodontia, hypertrichosis, and hyperhidrosis. 
D)  hyperdontia, hypertrichosis, and hyperhidrosis. 
A)  hypodontia, hypotrichosis, and hypohidrosis. 
B)  hyperdontia, hypotrichosis, and hypohidrosis. 
C)  hypodontia, hypertrichosis, and hyperhidrosis. 
D)  hyperdontia, hypertrichosis, and hyperhidrosis.

Question 7

Pegged or absent maxillary lateral incisors

Accepted Answer

A)  affect the secondary but not primary dentition. 
B)  have a prevalence of 10% in the white population. 
C)  are accompanied by congenitally lacking premolar teeth in 10% to 20% of the population. 
D)  are generally an autosomal-recessive trait with variable expressivity. 
A)  affect the secondary but not primary dentition. 
B)  have a prevalence of 10% in the white population. 
C)  are accompanied by congenitally lacking premolar teeth in 10% to 20% of the population. 
D)  are generally an autosomal-recessive trait with variable expressivity.

Question 8

Telangiectasias of the oral mucosa for a patient with hereditary hemorrhagic telangiectasia will be especially prominent in which location?

Accepted Answer

A)  Tip and anterior dorsum of the tongue 
B)  Palate 
C)  Gingiva 
D)  Buccal mucosa 
A)  Tip and anterior dorsum of the tongue 
B)  Palate 
C)  Gingiva 
D)  Buccal mucosa

Question 9

Which term describes less than the normal amount of hair?

Accepted Answer

A)  Hypoplastic 
B)  Hypotrichosis 
C)  Haploid 
D)  Nondisjunction 
A)  Hypoplastic 
B)  Hypotrichosis 
C)  Haploid 
D)  Nondisjunction

Question 10

What age are all of the permanent teeth typically lost in a patient with Papillon-Lefèvre syndrome?

Accepted Answer

A)  10 
B)  14 
C)  22 
D)  28 
A)  10 
B)  14 
C)  22 
D)  28

Question 11

Characteristic radiographic oral findings of hypophosphatemic vitamin D-resistant rickets include

Accepted Answer

A)  obliterated pulp chambers. 
B)  large pulp chambers with very long pulp horns. 
C)  normal pulp chambers with nonexistent roots. 
D)  large pulp chambers with nonexistent pulp horns. 
A)  obliterated pulp chambers. 
B)  large pulp chambers with very long pulp horns. 
C)  normal pulp chambers with nonexistent roots. 
D)  large pulp chambers with nonexistent pulp horns.

Question 12

The primary dentition of a patient with coronal dentin dysplasia will appear

Accepted Answer

A)  normal. 
B)  opaque with an amber color. 
C)  translucent with an amber color. 
D)  translucent with a blue color. 
A)  normal. 
B)  opaque with an amber color. 
C)  translucent with an amber color. 
D)  translucent with a blue color.

Question 13

Cyclic neutropenia is

Accepted Answer

A)  characterized by episodes that generally persist for 21 to 27 days. 
B)  characterized by oral manifestations consisting of severe ulcerative gingivitis or gingivostomatitis. 
C)  caused by a deletion on the long arm of chromosome 11 regions 14-21. 
D)  inherited as an autosomal recessive condition. 
A)  characterized by episodes that generally persist for 21 to 27 days. 
B)  characterized by oral manifestations consisting of severe ulcerative gingivitis or gingivostomatitis. 
C)  caused by a deletion on the long arm of chromosome 11 regions 14-21. 
D)  inherited as an autosomal recessive condition.

Question 14

Murray-Puretic-Drescher syndrome is also known as

Accepted Answer

A)  cherubism. 
B)  gingival fibromatosis with multiple hyaline fibromas. 
C)  gingival fibromatosis with hypertrichosis, epilepsy, and mental retardation syndrome. 
D)  Laband syndrome. 
A)  cherubism. 
B)  gingival fibromatosis with multiple hyaline fibromas. 
C)  gingival fibromatosis with hypertrichosis, epilepsy, and mental retardation syndrome. 
D)  Laband syndrome.

Question 15

Your patient presents with hypodontia, hypohidrosis, and nearly complete lack of sweat and sebaceous glands. Also noticeable is a lack of eyelashes and eyebrows. Which hereditary condition is present?

Accepted Answer

A)  Amelogenesis imperfecta 
B)  Osteogenesis imperfecta 
C)  Hypohidrotic ectodermal dysplasia 
D)  Dentin dysplasia 
A)  Amelogenesis imperfecta 
B)  Osteogenesis imperfecta 
C)  Hypohidrotic ectodermal dysplasia 
D)  Dentin dysplasia

Question 16

After metaphase of the first meiotic division

Accepted Answer

A)  the chromosomes split at the centromere and separate from one another. 
B)  the chromosomes do not split at the centromere but separate from one another. 
C)  each member of the pair migrates to one of the new cells, each of which contains 46 chromosomes but twice the final amount of DNA. 
D)  each member of the pair migrates to one of the new cells, each of which contains 23 chromosomes but half the final amount of DNA. 
A)  the chromosomes split at the centromere and separate from one another. 
B)  the chromosomes do not split at the centromere but separate from one another. 
C)  each member of the pair migrates to one of the new cells, each of which contains 46 chromosomes but twice the final amount of DNA. 
D)  each member of the pair migrates to one of the new cells, each of which contains 23 chromosomes but half the final amount of DNA.

Question 17

Persons with cyclic neutropenia display a decrease in the number of which circulating cells?

Accepted Answer

A)  Chromosomes 
B)  Neutrophils 
C)  Phenotypes 
D)  RNA 
A)  Chromosomes 
B)  Neutrophils 
C)  Phenotypes 
D)  RNA

Question 18

In addition to the development of the neurofibromas, what is the prominent clinical manifestation seen with a patient with von Recklinghausen disease?

Accepted Answer

A)  Café au lait pigmentation of the skin 
B)  Spider-like telangiectases on the lips, eyelids, and nose 
C)  Abnormally formed bones that fracture easily 
D)  Blue sclera 
A)  Café au lait pigmentation of the skin 
B)  Spider-like telangiectases on the lips, eyelids, and nose 
C)  Abnormally formed bones that fracture easily 
D)  Blue sclera

Question 19

Radicular dentin dysplasia is characterized by teeth with _____ crowns and _____ roots.

Accepted Answer

A)  normal; normal 
B)  normal; abnormal 
C)  abnormal; normal 
D)  abnormal; abnormal 
A)  normal; normal 
B)  normal; abnormal 
C)  abnormal; normal 
D)  abnormal; abnormal

Question 20

A patient with _____ will have a mouth that appears fishlike, with downward sloping of the lip commissures.

Accepted Answer

A)  osteogenesis imperfecta 
B)  mandibulofacial dysostosis 
C)  cherubism 
D)  cleidocranial dysplasia 
A)  osteogenesis imperfecta 
B)  mandibulofacial dysostosis 
C)  cherubism 
D)  cleidocranial dysplasia

The basic defect found with radicular dentin dysplasia lies in the

For parents who are carriers of the same recessive trait, the chance of giving birth to an affected child is _____%.

Which statement about the hereditary opalescent form of dentinogenesis imperfecta is true?

Snow-capped amelogenesis imperfecta is a variation of type _____ amelogenesis imperfecta.

Genetic heterogeneity can cause amelogenesis imperfecta because of its inheritance pattern (X-linked, autosomal recessive, or autosomal dominant).

Hypohidrotic ectodermal dysplasia is characterized by

Pegged or absent maxillary lateral incisors

Telangiectasias of the oral mucosa for a patient with hereditary hemorrhagic telangiectasia will be especially prominent in which location?

Which term describes less than the normal amount of hair?

What age are all of the permanent teeth typically lost in a patient with Papillon-Lefèvre syndrome?

Characteristic radiographic oral findings of hypophosphatemic vitamin D-resistant rickets include

The primary dentition of a patient with coronal dentin dysplasia will appear

Cyclic neutropenia is

Murray-Puretic-Drescher syndrome is also known as

Your patient presents with hypodontia, hypohidrosis, and nearly complete lack of sweat and sebaceous glands. Also noticeable is a lack of eyelashes and eyebrows. Which hereditary condition is present?

After metaphase of the first meiotic division

Persons with cyclic neutropenia display a decrease in the number of which circulating cells?

In addition to the development of the neurofibromas, what is the prominent clinical manifestation seen with a patient with von Recklinghausen disease?

Radicular dentin dysplasia is characterized by teeth with _ crowns and _ roots.

A patient with _____ will have a mouth that appears fishlike, with downward sloping of the lip commissures.

Introduction to Preliminary Diagnosis of Oral Lesions

Inflammation and Repair

Immunity and Immunologic Oral Lesions

Infectious Diseases

Developmental Disorders

Neoplasia

Nonneoplastic Diseases of Bone

Oral Manifestations of Systemic Diseases

Orofacial Pain and Diseases Affecting the Temporomandibular Joint

Filters

Exam 6: Genetics

The basic defect found with radicular dentin dysplasia lies in the

For parents who are carriers of the same recessive trait, the chance of giving birth to an affected child is _____%.

Which statement about the hereditary opalescent form of dentinogenesis imperfecta is true?

Snow-capped amelogenesis imperfecta is a variation of type _____ amelogenesis imperfecta.

Genetic heterogeneity can cause amelogenesis imperfecta because of its inheritance pattern (X-linked, autosomal recessive, or autosomal dominant).

Hypohidrotic ectodermal dysplasia is characterized by

Pegged or absent maxillary lateral incisors

Telangiectasias of the oral mucosa for a patient with hereditary hemorrhagic telangiectasia will be especially prominent in which location?

Which term describes less than the normal amount of hair?

What age are all of the permanent teeth typically lost in a patient with Papillon-Lefèvre syndrome?

Characteristic radiographic oral findings of hypophosphatemic vitamin D-resistant rickets include

The primary dentition of a patient with coronal dentin dysplasia will appear

Cyclic neutropenia is

Murray-Puretic-Drescher syndrome is also known as

Your patient presents with hypodontia, hypohidrosis, and nearly complete lack of sweat and sebaceous glands. Also noticeable is a lack of eyelashes and eyebrows. Which hereditary condition is present?

After metaphase of the first meiotic division

Persons with cyclic neutropenia display a decrease in the number of which circulating cells?

In addition to the development of the neurofibromas, what is the prominent clinical manifestation seen with a patient with von Recklinghausen disease?

Radicular dentin dysplasia is characterized by teeth with _____ crowns and _____ roots.

A patient with _____ will have a mouth that appears fishlike, with downward sloping of the lip commissures.

Introduction to Preliminary Diagnosis of Oral Lesions

Inflammation and Repair

Immunity and Immunologic Oral Lesions

Infectious Diseases

Developmental Disorders

Neoplasia

Nonneoplastic Diseases of Bone

Oral Manifestations of Systemic Diseases

Orofacial Pain and Diseases Affecting the Temporomandibular Joint

Filters

Radicular dentin dysplasia is characterized by teeth with _ crowns and _ roots.