Difference between permanent molar #WikiDentia

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1. The cusp of Carabelli is a feature of:

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a. Permanent maxillary 1st molar

b. Primary maxillary 1st molar

c. Primary maxillary 2nd molar

d. Both a and c

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2. Which of the following statements is true regarding the molars?

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a. Maxillary molars have 2 roots; mandibular molars have 3 roots

b. Maxillary molars have 3 roots; mandibular molars have 2 roots

c. Both maxillary and mandibular molars have 3 roots

d. Both maxillary and mandibular molars have 2 roots

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3. Maxillary molars have 3 roots. They are:

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a. Buccal, lingual and distal

b. 1 buccal, 2 lingual

c. Mesiobuccal, distobuccal and palatal

d. 2 mesial and 1 distal

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4. The mandibular molars have 2 roots. They are:

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a. Mesial and distal

b. Buccal and lingual

c. Buccal and palatal

d. Both b and c

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5. Oblique ridge is a feature of:

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a. Maxillary premolars

b. Maxillary molars

c. Mandibular premolars

d. Mandibular molars

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6. The following are the features of maxillary molars except:

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a. Cusp of Carabelli on 1st molar

b. Oblique ridge on occlusal surface

c. Trifurcated roots

d. Rectangular occlusal crown outline

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7. Maxillary molar crowns have:

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a. Mesiodistal dimension greater than the buccolingual dimension

b. Buccolingual dimension greater than the mesiodistal dimension

c. Mesiodistal and buccolingual dimensions nearly equal

d. None of the above

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8. Mandibular molar crowns have:

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a. Mesiodistal dimension greater than the buccolingual dimension

b. Buccolingual dimension greater than the mesiodistal dimension

c. Mesiodistal and buccolingual dimensions nearly equal

d. None of the above

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9. Compared to maxillary molars, the buccal surface of mandibular molar crowns:

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a. Is more vertical

b. Bends buccally from middle third

c. Bends lingually from cervical third

d. Bends mesially

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10. Compare to mandibular molars, the maxillary molar crowns exhibit:

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a. Less lingual convergence

b. Greater lingual convergence

c. No lingual convergence in 1st molar, which may show a buccal taper

d. Both a and c

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