MCQs in Periodontology

Chapter 6: Periodontal pathology

 

 

  1. Which is not true about Juvenile periodontitis:

 

  1. Rate of bone loss is faster than normal periodontitis
  2. There is a predilection for female patients
  3. The inflammatory process starts as bone loss
  4. Frequently bilateral symmetrical patterns of bone loss occur

 

 

 

 

 

 

The answer is: C

 

2.What is the clinical attachment loss for a tooth with 3 mm of gingival recession and a 3-mm pocket?

 

  1. 0 mm
  2. +3 mm
  3. -3 mm
  4. +6 mm
  5. -6 mm

 

 

 

 

 

The answer is E

 

  1. A periodontal pocket of 8 mm deep having the junctional epithelium coronal to CE junction is:

 

  1. An Infrabony pocket
  2. A Pseudopocket
  3. A true periodontal pocket
  4. A Furcation involvement

 

 

 

 

 

The answer is: B

 

  1. Which of the following statements regarding the dental chart shown below is correct?

  1. The patient has a disto-occlusal amalgam filling in the upper left second premolar
  2. The patient has a disto-occlusal amalgam filling in the upper right second premolar
  3. The patient has a mesio-occlusal amalgam filling in the upper left second premolar
  4. The patient has a mesio-occlusal amalgam filling in the upper right second premolar
  5. The patient has a buccal cervical cavity in the upper left canine

 

 

 

 

The answer is: C

 

  1. When considering periodontal disease which of the following are seen in patients who smoke compared with non smokers?

 

  1. Smokers tend to have increased gingival inflammation and bleeding
  2. Smoking is thought to have an effect on local erythrocyte function and this is a possible reason for the increased risk/prevalence of periodontal disease in smokers
  3. Poorer plaque control in smokers is thought to contribute to their increased risk/prevalence of periodontal disease
  4. Studies have conclusively shown that smoking always affects the microbial composition of the plaque, leading to an increased risk/prevalence of periodontal disease
  5. None of the above

 

 

 

 

The answer is: E

 

  1. U.S. food and drug administration for the adjunctive therapy of periodontitis has approved doxycycline hyclate:

 

  1. Available as 100mg capsule for use twice daily.
  2. Available as 20mg capsule for use twice daily.
  3. Available 200mg capsule for use twice daily.
  4. Available as 40mg capsule for use twice daily.
  5. Available as 20mg capsule for once daily use.

 

 

 

 

 

The answer is  : B

 

  1. Root planning is:

 

  1. Removal of material Alba and stains from root surface.
  2. Removal of soft tissue wall of the periodontal pocket.
  3. Removal of calculus & plaque from root surface.
  4. Removal of food debris from tooth surface.
  5. Removal of diseased cementum along with other root deposits.

 

 

 

 

 

 

 

The answer is: E

 

  1. The wavelength of the CO2 laser used for gingivectomy is:

 

  1. 10,600nm
  2. 1064nm
  3. 10nm
  4. 100nm
  5. 500nm

 

 

 

 

 

The answer is: A

 

  1. Localized aggressive periodontitis is best treated in early stage by:

 

  1. Tetracycline 250mg 4 times daily for fourteen days.
  2. Tetracycline 250mg once daily for 7 days.
  3. Tetracycline 250mg twice daily for 7 days.
  4. Tetracycline 250mg 4 times daily for 3 days.
  5. Tetracycline 250mg 4 times daily for 5 days.

 

 

 

 

 

 

The answer is: A

 

  1. Classically the epithelial rete ridges show a saw tooth appearance, hyperkeratosis or parakeratosis, hydropic degeneration of basal layer and a dense band like infiltrate of Tlymphocytes microscopically in:

 

  1. Pemphigus
  2. Pemphigoid
  3. Linear IgA disease
  4. Lichen planus
  5. Chronic ulcerative stomatitis

 

 

 

 

 

 

The answer is: D

 

  1. The bacteria detected in localized aggressive periodontitis are:

 

  1. Borrelia vincenti, medium size spirochetes.
  2. Fusiformis, Tanerella forsythus.
  3. Actinobacillus actinomycetemcomitans, capnocytophaga Spp., Eikenella corrodens, campylobacter rectus, prevotella intermedia.
  4. Mycoplasma, capnocytophaga sputigena, spirocheles.
  5. Treponema denticola, fusobacterium nucleatum, C. rectus, Actinobacillus Actinomycetem comitans.

 

 

 

 

 

The answer is  : C

 

  1. Acute periodontal abscess is treated by:

 

  1. Gingivoplasty
  2. Gingivectomy
  3. Periodontal flap procedure
  4. Antibiotics
  5. Drainage through the gingival sulcus or by an external incision

 

 

 

 

 

 

The answer is: E

 

  1. Tumor metastasing to gingiva is/are:

 

  1. Papilloma
  2. Central giant cell carcinoma of the jaw
  3. Fibroma
  4. Lipoma
  5. Adenocarcinoma of colon, renal cell carcinoma, hypernephroma, lung carcinoma

 

 

 

 

 

 

The answer is: E

 

  1. Periodontal destruction is considered moderate when:

 

  1. 3-4mm of clinical attachment loss has occurred in chronic periodontitis.
  2. 1-2mm of clinical attachment loss has occurred in chronic peroidontitis.
  3. 5mm or more of clinical attachment loss has occurred in chronic periodontitis.
  4. 0-1mm of clinical attachment loss has occurred.
  5. 5-0.9mm of clinical attachment loss has occurred in chronic periodontitis.

 

 

 

 

 

The answer is: A

 

  1. Primary endodotic lesion requires :

 

  1. Minor periodontal treatment only.
  2. Periodontal surgical treatment only.
  3. A combined periodontal and endodontic treatment.
  4. Endodontic treatment only.
  5. A periodontal flap procedure.

 

 

 

 

 

The answer is: D

 

  1. Necrotising ulcerative periodontitis:

 

  1. Is associated with deep periodontal pockets.
  2. Is associated with a crater like depression at the tip of interdental papilla and vesicle formation.
  3. Is associated with a crater like interdental bony depression.
  4. Is not responsive to any therapy.
  5. Leads to gingival recession because of faulty tooth brushing.

 

 

 

 

 

The answer is: C

 

  1. Non eugenol periodontal dressing :

 

  1. The retention is by chemically interlocking in the interdental areas.
  2. Contact allergy to eugenol has been reported.
  3. There is asbestos.
  4. Is placed for two weeks.
  5. Is placed for one week.

 

 

 

 

 

The answer is: E

 

  1. Synthetic resorbable suturing materials in periodontal surgery is:

 

  1. Polyglycolic
  2. Expanded polytetra fluoroethylene
  3. Nylon
  4. Polyester
  5. Chromic gut

 

 

 

 

 

The answer is: A

 

  1. Excisional new attachment procedure involves:

 

  1. A periodontal flap.
  2. A free gingival graft.
  3. A regenerative osseous procedure.
  4. Root planning.
  5. Internal bevel incision from the margin of the free gingiva apically to point below bottom of pocket.

 

 

 

 

 

The answer is: E

 

  1. Non bone graft materials used in periodontal surgery include:

 

  1. Cartilage, cementum, xenograft.
  2. Dentin, plaster of paris, allografts.
  3. Ceramics, coral derived materia ls, autografts.
  4. Cartilage, sclera, dura, dentin, cementum.
  5. Xenografts, dentin

 

 

 

 

 

 

The answer is: D

 

  1. Papilla preservation flap:

 

  1. Is a conventional flap procedures.
  2. Is used when narrow interdental spaces are present.
  3. Is used for teeth with wide interdental spaces.
  4. Is a partial thickness flap.
  5. Is a apically displaced flap.

 

 

 

 

 

 

The answer is: C

 

  1. Guided tissue regeneration involves:

 

  1. Formation of cementum with recession of gingiva.
  2. Epithelial migration on the cementum surface.
  3. Biomend, a bovine achille’s tendon collagen that resorbs in 4-18 weeks.
  4. A resective osseous procedure.
  5. Atrisorb a polyglycolic acid gel.

 

 

 

 

 

 

The answer is: C

 

  1. The bacterial flora associated with juvenile periodontitis is:

 

  1. Gram positive aerobic cocci
  2. Gram positive anaerobic cocci
  3. Gram negative aerobic rods
  4. Gram negative anaerobic rods

 

 

 

 

 

The answer is: D (actinomycetmcomitans and capnocytophaga are both gram-negative and anaerobic rods)