Question: In the majority of situations, the first decidous tooth to erupt is the______________?

• 1. Mandibular central incisor
• 2. Mandibular first molar
• 3. Maxillary central incisor
• 4. Maxillary second molar

Question: Which of these teeth are highly sturdy and usually the last ones to be lost ?

• 1. First molar
• 2. Central incisors
• 3. Canines
• 4. Premolars

Question: Before eruption the position of permanent mandibular incisor buds relative to primary incisors is_____________?

• 1. Superior and facial
• 2. Inferior and facial
• 3. Superior and lingual
• 4. Inferior and lingual

Question: The root completion of permanent teeth is achieved after __________ years o eruption?

• 1. 1-1½
• 2. 2-3
• 3. 3-4
• 4. 4-5

Question: Growth of all permanent teeth except last molars is completed by___________?

• 1. 6 years
• 2. 8 years
• 3. 12 years
• 4. 17 years

Question: Which of the following gives the best description of erupted permanent teeth typically seen in a 9- years old______________?

• 1. Only molars
• 2. All teeth except third molars
• 3. 1,2,4,5,6,7 in all quadrants
• 4. 1,2,6 in all quadrants

Question: A six- year molar begins to calcify at______________?

• 1. Six months IU
• 2. At birth
• 3. 1 years after birth
• 4. 3 years age

Question: As compared to permanent tooth , root formation in primary tooth______________?

• 1. Take less time
• 2. Take more time
• 3. Same time
• 4. Is complete when tooth erupts in oral cavity

Question: At birth the following teeth are calcifying____________?

• 1. Primary incisors & first molar
• 2. Primary canines & second molars
• 3. Permanent canines
• 4. Permanent 3rd molar

Question: A child has 12 permanent and 12 decidous teeth, what is his age____________?

• 1. 8½ years
• 2. 11½ years
• 3. 4½ years
• 4. 13½ years