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(HMD 101)
Name: No: Date:22/11/2010
I- Choose the correct answer:
1 - Which of the following permanent teeth is usually has
two rounded incisal angles
A- Upper central incisor B- upper lateral incisor
C- Lower central incisor D- Lower lateral incisor

2- The cingulum in the lingual surface is not centralized and is deviated distally in:
A- Upper central incisor B- upper lateral incisor
C- Lower central incisor D-Lower lateral incisor

3- Which of the following incisors has conical rootwith blunt end?
A- Upper central incisor B- upper lateral incisor
C- Lower central incisor D- Lower lateral incisor

4- The incisal aspect of the upper permanent incisor is:
A- Diamond B- Triangular
C- Trapezoid D- Rhomboid

5- The number of the lobes forming the incisors is:
A-3 lobes B- 4 lobes C- 2 lobes D- One lobe

6- The linear depression which is related to completefusion of the primary lobes is:
A- Fissure B- Pit
C-Developmental groove D- Sulcus



7- Enamel covers:
A- Clinical crown B- Anatomical crown
C- Anatomical root D- Clinical root

8- The incomplete union of the primary lobes is:
A- Developmental groove B- Fissure
C- Supplemental groove D- Fossa

9- Which tooth crown is bilaterally identical?
A- Upper central incisor B- upper lateral incisor
C- Lower central incisor D- Lower lateral incisor

10- Which tooth crown is tilted lingually?
A- Upper central incisor B- upper lateral incisor
C- Lower central incisor D- Non of all
( 5 degrees)


II- Complete the followings
1- The components of the periodontium are…...
2- The names of the point angles of posterior teeth are…..

3- The incisal angles of upper central incisor are……

4-The mesial aspect differs from the distal aspectin that…..

5- The incisors which have fan shape labial surface…….

( 5 degrees).
III- Give full account on the followingsillustrate your answer with diagrames)
1- The line angles of posterior teeth.
2- The lingual aspect of lower central incisor.

(5 degrees)



Answer of the midterm exam.
- Choose the correct answer:
1 - Which of the following permanent teeth is usually has two rounded incisal angles
A- Upper central incisor B- upper lateral incisor
C- Lower central incisor D- Lower lateral incisor
2- The cingulum in the lingual surface is not centralized and is deviated distally in:
A- Upper central incisor B- upper lateral incisor
C- Lower central incisor D-Lower lateral incisor
3- Which of the following incisors has conical root with blunt end?
A- Upper central incisor B- upper lateral incisor
C- Lower central incisor D- Lower lateral incisor
4- The incisal aspect of the upper permanent incisors is:
A- Diamond B- Triangular
C- Trapezoid D- Rhomboid
5- The number of the lobes forming the incisors is:
A-3 lobes B- 4 lobes C- 2 lobes D- One lobe



6- The linear depression which is related to completefusion of the primary lobes is:
A- Fissure B- Pit
C-Developmental groove D- Sulcus
7- Enamel covers:
A- Clinical crown B- Anatomical crown
C- Anatomical root D- Clinical root
8- The incomplete union of the primary lobes is:
A- Developmental groove B- Fissure
C- Supplemental groove D- Fossa
9- Which tooth crown is bilaterally identical?
A- Upper central incisor B- upper lateral incisor
C- Lower central incisor D- Lower lateral incisor
10- Which tooth crown is tilted lingually?
A- Upper central incisor B- upper lateral incisor
C- Lower central incisor D- Non of all

II- Complete the followings
1- The components of the periodontium are : periodontal ligament , cementum, alveolar bone , gingiva.
2- The names of the point angles of posterior teeth are: occluso-bucco-mesial&
Occluso-bucco-distal& occluso-linguo-mesial& occluso-linguo-distal.

3- The incisal angles of upper central incisor are: The mesial incisal angle is sharp, the distal incisal angle is rounded

4-The mesial aspect differs from the distal aspect in that:1-The mesial surface is narrower 2- The mesial contact area is more incisally 3- The mesial cervicl line is deeper

5- The incisors which have fan shape labial surface lower permanent incisors.
III- Give full account on the followingsillustrate your answer with diagrames)

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