ENDODONTIC QUIZ

According to the buccal object rule and a mesial-to-distal horizontal angulation of the x-ray cone, the image of

a. the buccal canal will be mesial to the image of the lingual canal b. the buccal canal will be distal to the image of the lingual canal c. the image of the buccal canal will superimpose on the image of the lingual

canal d. none of the above

Chelating agents (EDTA) remove only

a. calcified tissue b. organic materials c. pulp tissue d. bacterial toxins

One contraindication of the use of rubber dam is

a. it is very costly b. it takes very long time to place c. it tastes very bad d. it does not allow the patient to breath e. none of the above

To anaesthetize a patient for root canal treatment of tooth number 35, you do the following:

a. give an inferior dental block b. give a mental block c. give an inferior dental plus mental blocks d. give buccal infiltration

All of the following chemicals are irrigating solutions except:

a. sodium hypochlorite b. RC-prep c. saline d. hydrogen peroxide

While choosing to use an intra-canal medicament, the following should be considered:

a. the location of the tooth b. the status of the pulp and the periapical area before the start of the treatment c. the proper technique of using the chemical d. all of the above e. none of the above

Calcium hydroxide can be used as:

a. an intra-canal medicament b. a temporary root canal filling c. an apexification agent d. all of the above

Endo Tec obturation technique is:

a. an injection of warm gutta percha b. a lateral compaction of cold gutta percha c. a lateral compaction of warm gutta percha d. a vertical compaction of warm gutta percha

One indication for endodontic surgery is:

a. over instrumentation b. short filling c. trauma d. none of the above

One of the factors controlling the flap design include one of the following:

a. time needed for the procedure b. location of the tooth c. pain that the patient is suffering from d. desire of the clinician

To perform interrupted suturing for a trapezoidal flap, the following should be done:

a. start with inserting the needle in the attached side b. start with inserting the needle in the free side c. the penetration should be of a distance not less than 4 mm from the border of

the flap d. the suturing of the vertical incisions is done first

Only one of the following techniques uses the thermo mechanical compaction of gutta percha:

a. Ultra-fil b. Obtura c. Mc Spadden d. Endo Tec

To enhance the effect of the bleaching agent, heat should be applied according to the following:

a. temperature should not exceed 2000F b. the application time should be half an hour on and half an hour off c. the application time should be five minutes on and five minutes off d. the heat should be applied to the tooth (teeth) directly

When would the need for amputating a root of a multi-rooted tooth be considered?

a. if one root had extensive nonrestorable root caries b. if one root had severe internal or external resorption c. if one root had lost its alveolar bony support d. any of the above e. none of the above

For “walking”, non-vital bleaching:

a. mix the hydrogen peroxide with barium sulfate b. mix the hydrogen peroxide with sodium perborage c. mix the superexole with calcium hydroxide d. mix the H202 with zinc phosphate

The most common cause of discoloration of non-vital teeth is:

a. fluorosis b. haemorrhage into the pulp chamber c. by-production of some illnesses d. coffee

The frequency of the ultrasonic vibration for root canal preparation is:

a. 3000 HZ b. 5000 HZ c. 30,000 HZ d. 50,000 HZ

Endodontic surgical microscope gives a magnification of:

a. 4-20X b. 25-50X c. 51-75X d. 76-100X