Mandibular 1st permanent molar look in morphology as:
- A- primary 1st mand molar.
- B- primary 2nd mand molar.***
- C- primary 1st max molar.
- D- primary 2nd max molar.
The statement "Mandibular 1st permanent molar looks in morphology as..." isn't accurate because it compares a permanent tooth (mandibular 1st molar) to primary molars (milk teeth). Primary and permanent molars have different morphologies.
Here's the correct comparison for the mandibular 1st permanent molar:
Mandibular 1st permanent molar looks in morphology more like:
A. Primary 2nd mandibular molar:
Both have five cusps (three buccal and two lingual) and an "M"-shaped occlusal groove pattern. However, the permanent molar is larger and has more distinct cusps and grooves.
B. Not a comparable option:
Primary molars are deciduous (temporary) and shed during childhood, while the permanent molar erupts later and remains throughout life.
C. Not a comparable option:
Primary maxillary molars have a different number and arrangement of cusps compared to the mandibular first permanent molar.
D. Not a comparable option:
Comparing primary and permanent teeth within different jaws (maxilla and mandible) isn't relevant for this specific question.
Therefore, the most accurate answer is A. Primary 2nd mandibular molar, although with the caveat that the permanent molar has greater complexity in its morphology.
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