CHAPTER 6 RQ

19. The order of the four stages of mitosis is: a. Prophase, metaphase, anaphase, telophase b. Metaphase, prophase, telophase, anaphase c. Anaphase, metaphase, telophase, prophase d. Prophase, telophase, metaphase, anaphase

A

21. In dentinogenesis imperfecta type II, teeth have: a. Roots that are short and thin b. Dilacerated roots c. Hard, dense dentin d. Markedly brittle enamel

A

27. Barr bodies are seen at the: a. Nuclear periphery of all cells in women b. Periphery of the cytoplasm in all human cells c. Nuclear periphery of all human cells d. Periphery of the cytoplasm in all cells from women

A

36. Cannon disease is also known as: a. White sponge nevus b. Gingival fibromatosis c. Chronic neutropenia d. Cherubism

A

37. The cause of all forms of labial and palatal clefting is considered to be: a. Multifactorial b. Environmental c. Autosomal recessive d. Autosomal dominant

A

39. Patients with an X-linked hereditary condition: a. Are generally affected more severely if they are men b. Are always XYY c. Have cells with an extra Barr body d. Are always women

A

4. Which of the following is true for von Recklinghausen disease? a. Patients may have gingival neurofibromas. b. It is inherited as an autosomal-recessive trait. c. Patients experience a generalized whitening of the oral mucosa. d. Patients have multiple fibromatoses.

A

40. The Lyon hypothesis is demonstrated by: a. X-linked dominant traits b. X-linked recessive traits c. Autosomal-dominant traits d. Autosomal-recessive traits

A

10. The characteristic finding in permanent teeth affected with coronal dentin dysplasia is: a. Large, square pulp chambers in molars b. Thistle-shaped pulp chambers in incisors c. Crowns with amber color d. Markedly short roots

B

13. Snow-capped amelogenesis imperfecta have teeth with: a. Short, blunted roots b. White hypocalcified enamel at the incisal and occlusal thirds c. A thin, brown enamel d. Obliterated pulp chambers

B

15. A gamete is the result of the process of: a. The S phase b. Meiosis c. Mitosis d. Prophase

B

22. Torus mandibularis and torus palatinus are: a. Sporadic traits b. Inherited as an autosomal-dominant trait c. Inherited as an autosomal-recessive trait d. More prevalent in males

B

24. Hypothetically, an autosomal-dominant trait would be clinically present in: a. 25% of the offspring of an affected parent b. 50% of the offspring of an affected parent c. 75% of the offspring of an affected parent d. Only in males, never in female offspring

B

26. The most frequent site of hemorrhage in patients with hereditary hemorrhagic telangiectasia is the: a. Lip mucosa b. Gingiva c. Nasal mucosa d. Eyelids

B

28. Which one of the following is typically found in the MEN 2B syndrome? a. Carcinoma of the pancreas b. Pheochromocytoma c. Basal cell carcinomas d. Carcinoma of the colon

B

32. Which of the following is a component of the Peutz-Jeghers syndrome? a. Multiple jaw cysts b. Multiple pigmented macules on the lower lip and mucosa c. Multiple nodules on the tip of the tongue d. Multiple supernumerary teeth

B

33. In all inherited varieties of gingival fibromatosis, the gingival enlargement is characterized by a marked: a. Alveolar bone hypertrophy b. Collagenization of the connective tissue c. Hyperplasia of the covering epithelium d. Chronic inflammatory cellular infiltrate

B

42. All of the following are involved in cherubism except one. Which one is the exception? a. Coronoid process b. Condyle c. Posterior mandible d. Ascending ramus

B

8. The karyotype of a patient with Turner syndrome shows: a. 43 autosomes and XYY b. 44 autosomes and XO c. 44 autosomes and XYY d. 44 autosomes and XXY

B

1. Which one of the following is associated with cyclic neutropenia? a. Exfoliating teeth because of short roots b. Chipping away of enamel c. Diminished number of circulating neutrophils d. Premature loss of primary teeth

C

11. Radiographs of a patient with radicular dentin dysplasia show: a. Taurodontic teeth b. Large pulp chambers with long pulp horns c. Pulp chambers with a half-moon appearance d. Internal resorption of teeth

C

16. Which of the following is the most serious component of Gardner syndrome? a. Teeth hypercementosis b. Mandibular odontomas c. Colorectal polyposis d. Multiple osteomas

C

20. The constriction that joins the short and long arms of each chromosome is called the: a. Chromatid b. Equatorial plate c. Centromere d. Chiasmata

C

23. The Papillon-Lefèvre syndrome is inherited according to a (an): a. X-linked recessive pattern b. Autosomal-dominant pattern c. Autosomal-recessive pattern d. X-linked dominant pattern

C

25. Which one of the following is characteristically associated with oral ulcerations? a. Gardner syndrome b. Gorlin syndrome c. Kostmann syndrome d. Peutz-Jeghers syndrome

C

29. A 19-year-old woman is diagnosed with cleidocranial dysplasia. She has absent clavicles and a mushroom-shaped skull. Which of the following conditions is she also most likely to have? a. Large pulp chambers b. Taurodontism c. Supernumerary teeth d. Pegged lateral incisors

C

3. Two characteristic clinical components of mandibulofacial dysostosis are: a. Lack of clavicles and delayed teeth eruption b. Hypodontia and dysplastic nails c. Hypoplastic mandible and deafness d. Cleft lip and fistulas of lower lip

C

31. Patients with hypohidrotic ectodermal dysplasia characteristically have: a. Blue sclerae b. Excessive amounts of hair c. Hypodontia d. Multiple tongue nodules

C

34. Karyotype refers to: a. A portion of a chromosome attached to an another chromosome b. A pair of chromosomes with an identical extra chromosome c. A microphotograph showing a person's chromosomes from a single cell d. The position occupied by a gene in a chromosome

C

35. Taurodontic teeth: a. Have long roots b. Have thistle-shaped pulp chambers c. Are pyramidal in shape d. Are supernumerary

C

38. Odontogenic keratocysts are a clinical component of: a. Cherubism b. Pegged lateral incisors c. Nevoid basal cell carcinoma syndrome d. Neurofibromatosis of von Recklinghausen

C

5. Which one of the following is characteristically associated with teeth with large pulp chambers? a. Coronal dentin dysplasia b. Dentinogenesis imperfecta c. Hypophosphatasia d. Pitted autosomal-dominant amelogenesis imperfecta

C

7. A 9-year-old boy exhibits markedly swollen red and bleeding gingiva. In addition, he has tooth mobility, and the intraoral radiographs show marked alveolar bone atrophy with vertical periodontal pockets. Which of the following will be found in this child if he were to have Papillon-Lefèvre syndrome? a. Lack of anterior vestibular sulcus b. Diminished sweating c. Palmar and plantar hyperkeratosis d. Blue sclerae

C

12. Hypotrichosis means: a. Increased number of sweat glands b. Diminished number of sweat glands c. Increased amount of hair d. Decreased amount of hair

D

14. The most frequently exfoliated teeth in patients with hypophosphatasia are the: a. Mandibular permanent incisors b. Mandibular primary incisors c. Maxillary primary molars d. Maxillary primary incisors

D

17. Patients with hypophosphatasia characteristically have: a. Increase in serum alkaline phosphatase levels b. Obliterated pulp chambers c. Marked gingival keratinization d. Absence of root cementum

D

18. A 14-year-old boy is seen in consultation because of bilateral mandibular swelling. Radiographs show a bilateral multilocular lesion in the ascending mandibular rami. The mother of this patient has similar findings. The most likely diagnosis is: a. Cleidocranial dysplasia b. Nevoid basal cell carcinoma syndrome c. Ellis-van Creveld syndrome d. Cherubism

D

2. The so-called "enamel agenesis" is one of which type of amelogenesis imperfecta? a. Hypocalcified b. Hypomaturation c. Hypoplastic-hypomaturation d. Hypoplastic

D

30. Trisomy refers to: a. One extra chromosome in each pair b. Three extra chromosomes c. The presence of two extra X chromosomes in a male d. A pair of chromosomes with an identical extra chromosome

D

41. All of the following are characteristics of cherubism except one. Which one is the exception? a. Pseudoanodontia b. Autosomal dominant c. Ocular hypertelorism d. Autosomal recessive

D

43. In which one of the following conditions can the shoulders be brought forward to the midline due to hypoplastic clavicles? a. Cherubism b. Ellis--von Creveld syndrome c. Turner syndrome d. Cleidocranial dysplasia

D

6. Which one of the following statements is true when comparing cyclic neutropenia and Kostmann syndrome? a. The oral lesions in cyclic neutropenia are more severe. b. Both conditions are inherited as autosomal dominant. c. Both conditions are associated with capillary fragility. d. The oral lesions in Kostmann syndrome are always present unless systemic treatment is instituted.

D

9. The major concern for a dental hygienist when treating a patient with Osler-Rendu-Parkes Weber syndrome should be: a. Severe infections b. Epithelial desquamation c. Spontaneous ulcerations d. Gingival hemorrhage

D