Question: Mesiodistal width is more than cervico- incisal length of crown in_____________?

• 1. Permanent central incisors
• 2. Decidous maxillary central incisors
• 3. Permanent maxillary canines
• 4. Permanent mandibular lateral incisors

Question: The highest ( longest ) and sharpest cusp on the decidous mandibular first molar is____________?

• 1. Mesiolingual
• 2. Distolingual
• 3. Mesiobuccal
• 4. Distobuccal

Question: Transverse ridge is prominent on occlusal surface of which of the following decidous teeth ?

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

Question: Primary teeth differ from permanent teeth in following aspects ?

• 1. Thickness of enamel and dentin
• 2. Pulp chambers are longer
• 3. Roots are flaring
• 4. All of the above

Question: Pulp chambers and roots canals in decidous teeth______________?

• 1. Wide and deep
• 2. Shallow and narrow
• 3. Wide and narrow
• 4. Shallow and wide

Question: When viewed occlusally, a primary mandibular second molar closely resembles which of the following mandibular teeth ?

• 1. Permanent second molar
• 2. Permanent first molar
• 3. Second premolar
• 4. Primary first molar

Question: Roots of primary and secondary teeth are different in that the primary roots are more divergent and flaring. The other difference _____________?

• 1. Primary roots show less a accessory and lateral canals
• 2. Primary roots resorb more easily
• 3. Primary roots are shorter
• 4. None of the above

Question: How many roots does a primary maxillary first molar have ___________?

• 1. One
• 2. Two
• 3. Three
• 4. Four

Question: How many cusps does the crown of the maxillary first primary molar have ?

• 1. 2
• 2. 3
• 3. 4
• 4. 5

Question: The largest mesiodistal diameter in primary dentition is____________?

• 1. Mandibular 1st molar
• 2. Mandibular2nd molar
• 3. Maxillary 2nd molar
• 4. None of the above