Midterm pedodontics

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Al-Azhar University - Gaza
Dr. Hydar A.Shafi Faculty Of Dentistry
Pedodontics II Midterm Exam
November 2014
Student Name:……………………….
Q # 1 : MCQ :
1. The tooth most frequently involved in a traumatic episode is the:
A. Mandibular lateral incisor
B. Mandibular central incisor
C. Maxillary central incisor
D. Maxillary lateral incisor
2. The permanent teeth have all the following characteristics as compared to the
milk teeth except:
A. Less vascular pulp
B. More prominent pulp horns
C. More pronounced contactpoints
D. Larger occlusal table
3. The incidence of trauma to the anterior teeth of children is:
A. Increasing
B. Decreasing
C. Remaining essentially constant
D. None of the above
4. A common site of fracture of a deciduous tooth during extraction is:
A. Crown of the tooth
B. Coronal third of the root
C. Middle third of the root
D. Apical third of the root
5. There is a real relationship between the incidence of fractured anterior teeth
and the:
A. Protrusion of those teeth
B. Hardness of the dentin
C. Hardness of the enamel
D. Caries in those teeth
Mark :

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6. An injury to the face of a 10 year old boy resulted in class II fracture of the
crowns of maxillary central incisors and deep lacerations of lower lip. Which of
the following radiograph are indicated for diagnosis of the case?
A. Radiograph of fractured teeth
B. Radiograph of mandibular incisor
C. Bite-wing radiograph
D. Both A and B
7. Which of the following is the leastreliable finding from a clinicalexamination
of teeth subjected to traumatic injury?
A. Mobility of teeth
B. Vitality of teeth
C. Displacement of teeth
D Loss of tooth structure
8. When primary molars are prepared for stainless steel crowns should the depth
of reduction of the proximal surfaces be similar to the depth of the buccal and
lingual surface:
A. Reduction of all surfaces is similar for best retention
B. Proximal reduction is greater to allow the crown to pass the contact area
C. The buccal surface has the greatest reduction to remove the cervical bulge
D. All undercuts are uniformly removed so that the steel crown can be seated.
9. Initial vitality testing of traumatized teeth is most useful to:
A. Establish a base line for comparison with future testing
B. Predict the prognosis
C. Determine whether or not root canal treatment is indicated
D. None of the above
10. Your patient is 4 years old. Tooth E was traumatically intruded and
approximately 50% of the crown is visible clinically. What is your treatment of
choice?
A. Reposition and splint
B. Reposition, splint, and primary endodontics
C. Reposition, splint, and formocresolpulpotomy
D. None of the above
11. Your patient is 8 years old . A permanent central incisor is extruded 4 mm
following an injury 15 minutes ago. What is the treatment of choice?
A. No immediate treatment, monitor closely for vitality.
B. Reposition, splint, monitor closely for vitality.

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C. Reposition, splint, initiate calcium hydroxide pulpotomy.
D. Reposition, splint, initiate calcium hydroxide pulpectomy.
12. Which of the following is the most likely cause of pulpal necrosis following
trauma to a tooth?
A. Ankylosis
B. Calcific metamorphosis
C. Pulpal hyperemia
D. Dilaceration
13. The mineral trioxide aggregate MTAis best material for:
A. indirect pulp capping
B. apexogenesis
C. apexofication
D. root canal obturation
E. all except A
14. Apexogenesis is:
A. Formation of the apical one-third of the root
B. Formation of the apical two-thirds of the root
C. Closure of the apical foramen in a developing tooth
D. Deposition of cellular cementum at the apex of the root
15. The cement used for cementationof stainless steelcrown:
A. Zinc oxide eugenol
B. Polycarboxylate
C. Zinc silicophosphate
D. All of the above
Q # 2: True or False :
1. ( ) Stainless steel crowns are indicated in handicapped patients, where routine oral
hygiene measures cannot be performed.
2. ( ) Inflammatory resorption is another name for (Ankylosis)
3. ( ) In the permanent dentition root fractures mainly affect the mandibular central
incisors and are most common at 11 to 20 years of age.
4. ( ) Large adult forceps and large elevators are indicated because removal of some
of the deciduous teeth with all or part of the roots present can be challenging.
5. ( ) Concussion: sensitivity of the tooth due to trauma without abnormal loosening
or mobility.

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Q # 3: Complete :
1. The DTP vaccine is " 3 in 1" vaccine that protects against :
a) ……………………….
b) ……………………….
c) ……………………….
And it is given in 4 doses at ages :
a) ………………………..
b) ………………………..
c) ………………………..
d) ………………………..
2. The use of calcium hydroxide in apexification is referred to many reasons as:
a) …………………………………….......................................................
b) ………………………………………………………………………...
c) ………………………………………………………………………...
3. Milk is the bestmedium for preserving the avulsed tooth because it :
a) ……………………………………………………………………………
b) ………………………………………. …………………………………..
4. The cross-sectionof the mandibular first primary molar roots is flat mesiodistally
and elliptical. Therefore, ……………………. is contra-indicated.
5. ………………………….. is commonly used for cementation of stainless steel
crowns.

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Q # 4 : Write the technique of Apexification in steps.
Q # 5: Write the causes ofstainless steelcrownfailures.
1.
2.
3.
4.
5.
***Best wishes ***