Question: During the development of a tooth, sound coalescence of the lobes results in_____________?

• 1. Grooves
• 2. Fissures
• 3. Cusps
• 4. All of the above

Question: The crowns and roots of primary molar at their cervical portions are more____________?

• 1. Slender mesiodistally
• 2. Slender anteroposteriorly
• 3. Bulkier mesiodistally
• 4. Buliker anteroposteriorly

Question: The pulp of first primary molar contains________________?

• 1. Four pulp horn and three root canal
• 2. Three pulp horn and three root canal
• 3. Two pulp horn and two root canal
• 4. Two pulp horn and three root canal

Question: What is the thickness of the layer of primsless enamel found in primary teeth_____________?

• 1. 25 μm
• 2. 50μm
• 3. 75μm
• 4. 100μm

Question: The direction of enamel rods in decidous teeth is_____________?

• 1. Same as permanent teeth
• 2. Inclined in an apical direction in the cervical third of crown
• 3. Inclined in an occlusal direction in the cervical third of crown
• 4. None of the above

Question: With respect to their permanent successors the sum of the mesidodistal diameters of the first and second decidous molar is generally ____________?

• 1. Less
• 2. Greater
• 3. The same
• 4. Not related

Question: Cusp of carbaelli can be considered a normal finding on____________?

• 1. Decidous mandibular 1st molar
• 2. Decidous maxillary 1st molar
• 3. Decidous maxillary 2nd molar
• 4. Decidous mandibular 2nd molar

Question: How many pulpal horns are there in the mandibular second primary molar ?

• 1. 3
• 2. 6
• 3. 4
• 4. 5

Question: Cervical bulge. True is____________?

• 1. Enamel rods at cervical region directed occlusally
• 2. Results in constriction at cervical region
• 3. Is characteristic of decidous teeth
• 4. All of the above

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

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