Among the difference between teeth in the decidous and the permanent dentition is that_____________?
Correct answer: D. Crowns of decidous incisors are wider mesiodistally than their cervico incisal lengthsBook Dental Checkups
- A. Buccal surfaces of the permanent molars are flatter
- B. Cervical ridges are more pronounced in permanent molars
- C. Root trunks of decidous teeth are larger compared with their overall root lengths
- D. Crowns of decidous incisors are wider mesiodistally than their cervico incisal lengthsBook Dental Checkups
Explanation
Primary incisor crowns are characteristically wider mesiodistally than they are cervicoincisally, giving them a broad, squat appearance. Primary molar root trunks are shorter, not larger relative to the roots, and their cervical ridges are more pronounced than those of permanent molars.
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Practise Tooth Morphology
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