Topics: Teeth, Canine tooth, Deciduous teeth Pages: 12 (2137 words) Published: December 7, 2012
Oral Biology Departement

Descriptive Dental Anatomy

Q Bank HPT 121

Q Bank HPT 121

I- Put (√) or (X) in front of each sentence and correct the wrong sentence.

1- The distal cusp is the smallest cusp in the occlusal surface of the lower 1st permanent molar. ( )

2- The lower third molar has no distal contact area. ( )

3- The three buccal cusps of the lower 1st deciduous molar are unequal in size. ( )

4- The lower third molar has numerous supplemental grooves. ( )

5- The lower deciduous incisors have lingual inclination. ( )

6- The crowns of the lower molars are wider mesiodistally than buccolingually. ( )

7- The developmental groove of the occlusal surface of the lower 2nd permanent molar is cruciform shape. ( )

8- The elevations and depressions of the deciduous teeth are less developed than the permanent teeth. ( )

9- Deciduous teeth begin to erupt at 6 months and the last tooth to erupt at about 6 years. ( )

10- The eruption date of the upper permanent canine is at about 11-12 years. ( )

11- Lower first permanent molar has 5 cusps. ( )

12- The lower permanent molars have 3 roots. ( )

13- Lower 1st permanent molar has supplemental grooves more than lower 3rd molar. ( )

14- The mesial root of lower 1st permanent molar usually has two root canals. ( )

15- The incisal edge of lower deciduous incisors is centered over the center of the root. ( ) 16- In upper deciduous canine the distal cusp slope is longer than the mesial cusp slope.

17- The buccal surface of upper and lower D has no buccal developmental groove inspite of they have 2 buccal cusps. ( )

18- In upper and lower D, the cervical ridge is well developed and deviated slightly to the mesial portion and called mesiobuccal cervical ridge. ( )

19- When the teeth of the upper and lower jaws are occluded, the upper teeth are present outside the lower teeth; this horizontal distance between them is named overbite. ( )

20- All deciduous teeth undergo calcification before birth while, only the first permanent molars show calcification at birth. ( )

21- The mesial cusp slope of the deciduous maxillary canine is longer than the distal cusp slope. ( )

22- The deciduous molars are replaced when exfoliated by the permanent molars. ( )

23- Periodontium is a supporting apparatus (system) of the tooth. It is formed of: Gingiva, Periodontal ligament, Alveolar bone proper and dentin. ( )

24- The three roots of the maxillary deciduous...
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