Dentals MCQ File 1

1. Question

Transmissible disease of concern to the dental professional is

Hepatitis B
HIV
Mycobacterium tuberculosis
All the above

2. Question

Which of the following statements about infections is correct?

Mumps is a common bacterial infection that causes bilateral enlargement of the parotid glands.
Foot and mouth disease is caused by Coxsackie A virus and is characterised by a viral rash and oral ulceration
The Ebstein–Barr virus causes infectious mononucleosis, in which petechiae of the palate and ulceration of the fauces are seen
Primary herpetic stomatitis is caused by the herpes zoster virus, usually type 1 and is a condition in which intra-oral vesicles occur, which rapidly break down to form ulcerated areas

3. Question

Although the aetiology of recurrent aphthous ulceration is unknown, which of the following are thought to be associated with aphthous ulceration?

All options
Haematinic deficiencies
Stress
Family history
HIV

4. Question

With respect to salivary gland tumours:

About 75% of all salivary gland tumours occur in the parotid gland
About 60% of all salivary gland tumours occur in the minor salivary glands
A tumour in the parotid gland is more likely to be malignant than a tumour in the minor salivary glands
Most tumours in the sublingual salivary gland are benign
The commonest salivary gland tumour is a adenoid cystic carcinoma

5. Question

To which of the following spaces can infection directly spread from a lower wisdom tooth?

Canine space
Maxillary space
Submandibular space
Cavernous sinus
Maxillary sinus

6. Question

Excessive force during orthodontic treatment may result in:

Root resorption
dilaceration
Increase in anchorage
Increased caries rate

7. Question

You have prescribed oral metronidazole. What instructions do you need to give the patient?

Take the tablets twice a day
Take the tablets four times a day
Take the tablets until the pain has subsided
Avoid drinking alcohol while taking the tablets

8. Question

Stensons duct opens opposite the

Upper 2^nd molar
Upper 3^rd molar
Lower 2^nd molar.
Lower 3^rd molar
Upper 1^st molar

9. Question

The impression material that shows the least dimensional change as a result of disinfection by immersion is which of the following?

Addition silicone
Polyether
Alginate
Agar

10. Question

Which of the following lesions/conditions are caused by viruses?

Koplik’s spots
Herpetiform ulcers.
Candidiasis
Lyme disease

11. Question

The expanded form of CPITN is:

Community Periodontal Index from Treatment Needs
Community Periodontal Index of Treatment Needs
Community Periodontal Index for Treatment Needs
Community Periodontal Index to Treatment Needs

12. Question

Which of the following statements is correct with respect to the salivary glands and calculi?

Meal time syndrome only occurs if a patient has a blockage in salivary flow due to a salivary calculus
Salivary calculi form more commonly in the parotid gland than the submandibular gland
Encouraging salivary flow by chewing may help small salivary calculi to pass out through the salivary duct
Salivary calculi are always radiopaque due to calcium deposits, and hence are visible on radiographs

13. Question

Which of the following oral lesions are known to be related to candidal infections?

Herpetic stomatitis
Median rhomboid glossitis
Geographical tongue (erythema migrans)
Hairy leukoplakia

14. Question

Which of the following investigations are appropriate for the lesions?

Incisional biopsy for a mucous extravasation cyst
Incisional biopsy for a suspected haemangioma
Excisional biopsy for a suspected fibroepithelial polyp
Excisional biopsy for a white patch of unknown origin

15. Question

Which fascial space is first affected in Ludwig’s angina

Sublingual space
Submandibular space
Submaxillary space
Lateral pharyngeal space
Submental space

16. Question

Advantages of removable appliance therapy include:

They are easier to clean than fixed appliances
Intermaxillary traction is possible
Bodily tooth movements are possible
Speech is rarely affected

17. Question

Aspirin:

Is commonly used as an analgesic for children
Prevents the synthesis of prostaglandin E3
Is anti-emetic
May cause gastric mucosal irritation and bleeding

18. Question

If a patient comes with history of cardiac problem taking aspirin what will be the possible complication if you do an extraction:

Increases bleeding time.
Increases prothrombin time
Increases clotting time
Increases partial thrombin time
Decreases bleeding time

19. Question

In history taking for an edentulous patient which of the following is not essential?

The patients attitude to dentures
The patients occupation
The views of their friends and family
The patients last vacation
A history of unsuccessful attempts at wearing a denture

20. Question

Of the following is not a local complication of local anesthesia

Needle breakage
Pain during administration
Persistent sensitivity disorders
Endocarditis

21. Question

Any soft foreign matter loosely attached to the teeth, consisting of mucin, bacteria and food debris is called

Smear layer
Material alba
Debris
Plaque

22. Question

The Correct Answer is Meal time syndrome only occurs if a patient has a blockage in salivary flow due to a salivary calculus

Smokeless tobacco use
Sunlight
Viral infection
Vitamin C deficiency
All except D

23. Question

Dry mouth may be caused by:

Hyperbaric oxygen treatment of osteoradionecrosis
Sarcoidosis
Bell’s palsy
Parkinson’s disease

24. Question

Regarding ameloblastoma:

It usually presents between the ages of 15 and 20 years
It is the most rare odontogenic neoplasm
Commonly presents as a monolocular cyst on radiographs
It is common in the posterior mandible

25. Question

Which of the following could occur following a fracture of the zygoma?

Anosmia
Bruising in the ipsilateral upper buccal sulcus
Anaesthesia of the contralateral cheek
Ballon face

26. Question

Types of removable appliance except

Simple Hawley
Lip bumpers
Space maintainer
Occlusal guard
None of the above

27. Question

Which of the following drugs can be safely prescribed in pregnancy?

Metronidazole
Paracetamol
Prilocaine
Miconazole

28. Question

Which of the following method of sterilization is ineffective?

Ethylene oxide gas.
Gamma radiation
UV radiation
Autoclaving
Hot air oven

29. Question

Denture stomatitis:

Is usually painful
Candida albicansis implicated
Is inflammation of the mouth
Is frequently a sign of some general systemic disease

30. Question

Which of the following is not a Systemic complications of local anesthesia

Vasovagal collapse
Hyperventilation syndrome
Haematoma
Allergic reactions

31. Question

An important antioxidant found in vegetables and fruits known to protect against cancer is:

Niacin
Beta carotene
Tocopherol
Tocopherol

32. Question

Which of the following statements are correct regarding medications used to treat various types of pain in the orofacial region?

Idiopathic facial pain or atypical facial pain may be treated effectively with tricyclic antidepressants
Temporal arteritis may be treated effectively with pcm
Trigeminal neuralgia may be treated effectively with carbamazepine
Post-herpetic neuralgia may be treated effectively with acyclovir

33. Question

The cusp or trait of Carabelli is normally found on which of the following tooth/teeth?

Mandibular primary first molars
Mandibular secondary/permanent first molar
Maxillary first premolars
Maxillary secondary/permanent first molars

34. Question

Regarding glass ionomers:

The powder is an aluminosilicate glass
They are mixed by adding the powder to the liquid incrementally
They release fluoride
Following initial placement they should be protected from dehydration
A, C & D

35. Question

Which of the following are common signs and symptoms of a fracture of the zygomatic arch?

Limitation of mouth opening
Epistaxis
Deviation of the mandible on opening to the contralateral side
Diplopia

36. Question

The following are types of space maintainers except

Distal shoe
Denture
Band and loop
Crown and loop
None of the above

37. Question

Which of the following may be signs and symptoms of lidocaine overdose

Light headedness
Tachycardia
Hyperventilation
Hypertension

38. Question

Marginal resection means :

Resection of tumor without disruption of continuity of bone
Resection of tumor by removing full thickness of bone
Resection of tumor with removal of lymph nodes
Resection of tumor with removal of lymph nodes & adjacent soft tissue
Creating a surgical window

39. Question

The following are requirements of an articulator except

Should accept face bow transfer
Should be an Acron type
Should be able to open and close in a hinge-like fashion
The semi adjustable articulator is the best for complete dentures

40. Question

The Corect Answer is Haematoma

In the anterior maxilla
Angle of the Mandible
Posterior maxilla
Anterior mandible

41. Question

The two most important risk factors associated with 75 – 90% of oral cancers are:

Tobacco and alcohol
Genetic predisposition and alcohol
Sunlight and tobacco
Dental trauma and tobacco

42. Question

Which of the following descriptions of the types of facial pain are correct?

Pain from internal derangement of the temporomandibular joint is usually poorly localised
Periodic migrainous neuralgia (cluster headache) is often associated with facial flushing on the affected side of the face
If a young patient is diagnosed with migrainous neuralgia (cluster headache), it may well be due to multiple sclerosis
Atypical facial pain (idiopathic facial pain) is only seen in children

43. Question

You are due to see an adult patient in your dental practice whose records state that he has mild haemophilia. Which of the following procedures may be carried out safely in general dental practice?

Forceps extraction of an upper anterior tooth under local anaesthesia
Impressions for a partial denture
Occlusal restoration in an upper premolar tooth with local anaesthesia
Occlusal restoration in a lower molar tooth with inferior, dental block, local anaesthesia
B & C

44. Question

Erosive tooth wear is associated with which of the following?

Gastro-oesophageal refux
Alcohol
Chillies
All the above

45. Question

Regarding the muscles of mastication

The temporalis can be divided into anterior, middle and posterior fibers, all of which carry out the same movements
The anterior and middle fibers contribute to elevation of the mandible
The middle and posterior fibers contribute to elevation of the mandible
The anterior and middle fibers contribute to retrusion of the mandible

46. Question

A 13-year-old girl attends your dental practice. She is a thumb sucker. What type of malocclusion would she be likely to have?

Anterior openbite
Posterior openbite
Overbite
Increased overbite

47. Question

Erythromycin

Is a penicillin drug
Is active against some penicillinase resistant staphylococci
Is given to an adult in a regimen of 250–500 mg three times daily for 5 days.
Should not be used during pregnancy

48. Question

In CPITN: The definition is divided into five segments

Pocketing of 4-5mm is when the gingival margin is on the clear area is code no. 3.
Pocketing of 6mm or more is when the gingival margin is on the black area of the probe is code no 4
For appropriate treatment plan code 2 requires improvement in home care
For appropriate treatment plan code 3 requires supra and sub gingival scaling and improvement in home care

49. Question

The following are consequences of tooth loss except:

Loss of masticatory efficiency.
Alveolar resorption
Displaceable tissues e.g fibrous ridges
Enlarged tuberosities

50. Question

What consequences can supernumerary teeth have for the developing dentition? All are true except?

It can cause localized crowding or spacing
If it remains unerupted, it can cause impaction or
Displacement of teeth
Hutchison teeth