September 2004 Paper 2

1. The blood supply to the denture bearing areas of the maxilla

A. Maxillary artery

B. Grand/greater palatine artery

2. What could be MOST cariogenic,

A. Consuming a lot of carbohydrate with meals

B. Consuming a lot of elective sweets during meals

C. Excessive consumption of sugar soft drinks all day

D. Consumption of elective sweets between meals

3. 13 years old boy comes to you with excessive hyperplasia of the gingiva as a

result of Phenytoin what is your management,

A. Stop the medication

B. Force a strict oral hygiene and surgical removal of excess gingival tissues

C. Debridement and conservative approach

4. During swallowing, a) suprahyoid muscles relax b) masseter contract c)

tongue touches the palate

A. a and b

B. a and c

C. b and c

D. none of the above

E. all of the above

5. White man 56 years old comes to you with a brown spot on his gingiva and

another one on his oral mucosa, when taking the history he mentioned a

weight and memory lost. He as well complains of headaches. What is your

most probable diagnosis,

A. Addison’s disease

B. Hyperthyroidism

6. While removing the second primary molar of 9 years old child, the apical ¼

of the root fracture and stay in the socket,

A. You will just leave it and observe it

B. You take surgically by a lingual flap

C. You try to take out by using a root apex elevator

D. You use a fine end forceps to take it out

7. Subgingival plaque changes from,

A. gram positive to gram negative

B. gram negative to gram positive

8. What is the most important factor to reduces dental irradiation,

A. Speed of film

B. Collimation

C. Filtration

D. Cone shape and length

9. With view to Nitrous Oxide what is the major pharmacological problem?

A. Contraindicated in pregnancy

B. Contra indicated in cardiac dysrhythmias

C. Diffusion hypoxia at the end of the case due to slow solubility of the agent

in blood

10. Which of the following is an expansile lesion of the oral mucosa,

A. Keratocyte

B. Radicular cyst

C. Cementoma

11. the initial therapy in HIV patient is,

A. Debridement and antimicrobial mouth rinses

B. Root planing and surgical approach

12. The concentration of Fluoride in the topical NaF

A. 2%

B. 5%

C. 8%

D. 10%

13. Which of the following most probable does not exist in the kids acute

gingivitis,

A. Spirochetes

B. Streptococcus

C. Staphylococcus

14. Which of the following is true about warfarin,

A. INR of 3 is enough to start any extraction

15. What is not true about tobacco smoking,

A. Redox potential is reduced resulting in anaerobic bacteria

B. It is immuno-suppressive

C. It is adrenergic

16. patient in your dental chair shows chest pain, weak pulse and dysponea,

what is your initial management,

A. ive a nitro-glycerine tablet and keep the patient up seated /This answers is

for any of the angina symptoms/

B. Put the patient in supine position

C. Do nothing and wait until the symptoms go

17. What are two teeth connected at the cementum called,

A. Concrescence

B. Dilaceration

C. Gemination

D. Fusion

18. Developer contaminated with other chemical and was not mixed properly.

What is the effect on the X-ray film?

A. Too dark film

B. Light film

C. Foggy

19. Which part of the cranium is considered as the most stable area,

A. Frankfort plane

B. Occlusal plane

C. Anterior cranial plane

D. Anterior nasal to gnathion.

20. the difficulty of placing matrices on deciduous dentition is a result of,

A. The small mouth of kids which result in problem keeping the matrices in their

mouths

B. vergence of the deciduous teeth

21. What would you expect to see a year after Auto- transplantation of tooth in

a prepared socket,

A. New well formed periodontal ligament

B.

C. New well formatted lamina dura

22. Which muscle will keep the fractured segment of the jaw …… I can not

remember this question

A.

B. Medial pterygoid

C. Masseter

D. Temporalis

E. Mylohyoid

23. What is INR used for,

A.

24. Branchial Cleft cyst is located ,

A. Medial to the neck

B.

C. Shows when swallowing

25. the most common way of oral carcinomas to other tissues is/are

A. Lymphatic

B. Invasion and blood

C.

D. Blood and lymphatic

26. What is true about smokers,

A. Causes immunosuppression

B.

C. Defects neutrophil function and characteristics

D. Can produce smokers palate but rarely metaplasia

27. The main purpose of periodontal treatment is,

A. Elimination of plaque and calculus

B.

C. Reformation of all the periodontal ligaments

D. The elimination of all occlusal trauma

28. What is the approximate unstimulated salivary flow rate,

A. 2 ml/min

B. ml/min

C. 0.02 ml/min

D. 20 ml/min

29. Why is it difficult to use matrices on deciduous teeth,

A. It hurts the kids’ parents

B. The small mouth opening of kids in that age range makes it difficult to keep

matrices in mouth.

C. The occlusal concavity of deciduous teeth

30. The thermal and electric pulp tests will,

A. Give an accurate indications of the pulp status

B.

C. The patient can differentiate between cold or hot stimuli

31. Immediately after the extraction of lower molar the patient complains of

post operation bleeding and pain, how would manage this,

A. Prescribe analgesics and ask the patient to follow a strict oral hygiene

B. Administer 5% Marcaine Local Anastatic, prescribe analgesics and pack the

socket with alvogyl

C. Administer 5% Marcaine Local Anastatic, suture the socket and prescribe

analgesics

D. Suture and give pressure packs

32. Gracey curette is characterized by,

A. The blade and the shank form 90º angle

B. Can be used on both sides

C. Can be used on any tooth surface

D. ic for each surface of the tooth

33. The removable partial denture requires relining what is would be the most

appropriate action,

A. take a new impression by asking the patient to occlude on it

B. Provide equal space (may be it was thickness) between denture and gingival

tissues.

C.

impression

34. Why do we use Corticosteroid material in pulp obturation,

A. To prevent the inflammatory process

B. As an Antibiotic

C. To minimize pressure on the periapical tissues

35. As a result of wrong use of tooth brush the patient MOST probable

complaint will be when,

A. Spontaneous pain or discomfort

B. Occasional pain during brushing of the teeth

C. Occasional pain during consumption of sweets

36. In regards to dentine strength, which is the right sequence,

A. Affected dentine> Sound dentine> Infected dentine

B.

37. Symptoms free patient comes to you after four weeks of an endodontic

treatment and you find on radiograph the canal is over filled with what it

seems to be a cone of Gutta Percha 1mm beyond the apex with a radiolucent

small area. What is your initial management?,

A. Start apiectomy through a flap and surgery

B. Obturate the root canal

C.

D. Seal the pulp chamber and keep it under observation

38. After obturation and on X-ray you notice the obturation materials are 1mm

beyond apex. What is your first management?

A. Refill the canal

B. -ray

C. Leave it as it

39. 2.21mg NaF contains,

A.

B. 2 mg

C. 0.5 mg

40. The requirement for root and crown length is,

A. 2:3

B. 1:1

C. 1:2

41. Stiffness of material are measured by,

A. Proportional unit

B.

C. Stress/ strain

42. What is the purpose of making a record of protrusive relation and what

function does it serve after it is made?

A. \\To register the condylar path and to adjust the inclination of the incisal

guidance.

B. To aid in determining the freeway space and to adjust the inclination of the

incisal guidance.

C. ndylar path and to adjust the condylar guides of the

articulator so that they are equivalent to the condylar paths of the patient.

This is the answer of the American board, to aid in establishing the occlusal vertical

dimension and to adjust the condylar guides of the articulator so that they are

equivalent to the condylar paths of the patient

43. Four years kid shows at your clinic with open bite as a result of thumb

sucking, you notice a delayed speech ability what would be your first

management,

A. to a speech therapist

B. Apply a removable habit inhibitor denture

C. Apply a removable habit inhibitor denture and educate the parents about it so

the kid will not be taking it off so often

44. Two central incisors on a radiograph are showing with what looks like eye

drop radiolucency. You decided to start endodontic treatment on these teeth

but you tried to open access to the root canal you find clearly closed orifices

with what look like secondary dentine. What is your initial management?

A. Leave as it and start a permanent restoration.

B. Start systemic antibiotic

C.

45. A patient with no positive history came along for scaling. The moment you

pick up the scaler you punch your finger, what should you do?

A. Complete the procedure as nothing has happened

B. Check patient’s blood for Hepatitis B antibody HBsAb

C. Check patient’s blood for Hepatitis B antigen HBsAg

D. Check dentist’s blood for Hepatitis B antibody HBsAb and HIV antigen

HIVAg

E. Check dentist’s blood for Hepatitis B antigen HBsAg and HIV antibody

HIVAb

F. Dentist should go and take a HBsAb vaccine

46. when probing for periodontal disease the tip of the probe will be,

A. At the coronal end of junctional epithelium

B. At the top of the gingival calculus

47. After the initial development stage and in the absence of pathology, a the

size of the pulp chamber has been reduced by,

A. Deposition of primary dentine

B. econdary dentine

C. Reparative dentine

D. Pulp fibrosis

E. Deposition of reparative dentine

48. The most desirable outcome of endodontic treatment is,

A. The healing of the alveolar bone

B.

C. Formation of fibrous capsule around the apex

49. What is NOT related to the normal aging process?

A.

B. Reduced elasticity of muscles

C. Decreased elasticity of the skin

D. Lower pain threshold

50. As far as localised alveolar osteitis is concerned; which one of the

following is true?

A. The incidence in the mandible and maxilla is similar

B. The prophylactic prescription of antibiotics prior to extraction reduces the

incidence.

C. essive fibrinolysis is the likely aetiology

D. Purulent exudate must be seen for a diagnosis and irrigation is mandatory

E. Zn oxide eugenol and alvogyl dressing promote a rapid bone growth

51. The most accurate finding of pulpal pathology

A. ical region

B. Pain on hot or cold drinks

C. The absence of response to pulp testing

52. for dental caries to progress in dentine,

A. the dentine must contain soluble collagen

B. enamel must contain glycoproteins

C.

D. diet must contain polysaccharides

E. pulp must contain complement

53. A patient on the dental chair has cardiac arrest which is INCORRECT,

A. Observing the vital signs and check that the air way is clear is at high

importance

B. Expired air has 15% O2 only, and cardiac compressions achieve 30-40% of

cardiac output

C. ure at the rate of 40/min will reduce the chances

of cerebral hypoxia

D. Intermittent positive pressure is better than mouth to mouth when it has been

given at the same rate.

54. Which of the following is true in regards to smoking,

A. Smokers keratosis is common but metaplasia activity is not recognised

B. Redox potential is increased resulting in aerobic bacteria

C.

**I remember this with more than one answer but can not remember them all

55. A 9 year old boy has a small white discolouration on his maxillary central

incisor. The lesion is most probably,

A.

B. Hypoplasia due to acute systemic infection when 6-12 months old

C. Defect during the histo differentiation stage of development

D. Defect during the morho differentiation stage of development

56. The best method to take X-ray of the maxillary sinus is,

A. Periapical radiograph

B. Panoramic view

C. Lateral cephaloghraph

D.

E. Reverse Towne’s view

57. Which of the following is not a part of the fully formed enamel organ,

A. Outer enamel epithelium

B. Inner enamel epithelium

58. 18 years old female her weight is 52Kg and she is 163cm tall. On dental

examination erosion of teeth on the most of her lingual surfaces is clearly

showing. Dietary history revealed a daily rate of 5000 to 7000 Kcal/day.

What is most probable would be her case?

A. Alcoholism

B. Drug abuse

C.

D. Excessive smoking

E. Diabetic mellitus type I

59. Which one of the following is true in regards t osseointegration implants in

dentistry?

A. and integrated directly between titanium and

bone

B. Following insertion, implants can be immediately loaded without problem

C. The success of the implants is directly proportional to its area of contact with

bone

D. The success of the implants depends mostly on low torque preparation and

insertion of the fixture

E. The success of integration is accurately investigated by immediate

radiographic examination

60. Generalised lost of tooth structure by chemical means called,

A. Erosion

B. Attrition

61. On X-ray, the buccal roots of 16 is considerably elongated; this is a result of,

A. Too great vertical angulation

B. Inadequate vertical angulation

C. Excessive object film distance

62. The principle muscle responsible for the opening of the mouth is,

F. Mylohyoid

G. Anterior temporal

H. Posterior temporal

I.

63. Denture stomatitis is commonly associated with,

A. The continuous wearing of removable orthodontic appliances in otherwise

healthy patient

B. The proliferation of hypertrophic tissue at the denture periphery

C.

D. Allergy to denture base material

64. Which is NOT usually related to gingival inflammation in children?

A. Endocrine disturbance

B. Viral infection

C. Mouth breathing

D.

E. Streptococcal infection

65. Which of the following is NOT characteristic of Down’s syndrome?

A. Decreased neutrophil function

B. Macroglossia

C.

D. An increased susceptibility to periodontal disease

E. Congenitally missing teeth

66. Which of the following is the best evidence that a previous periodontal

treatment is successful?

A. The patient keeps a 3 month recall appointment

B. There is no extrinsic stain

C. nstrates good understanding of brushing and flossing

techniques

D. There is no bleeding on probing