The key to occlusion is_______________?
Correct answer: D. Maxillary permanent first molar
- A. Maxillary primary second molar
- B. Maxillary permanent second molar
- C. Maxillary primary first molar
- D. Maxillary permanent first molar
Explanation
The permanent maxillary first molar is the key to normal occlusion because its mesiobuccal cusp fits into the buccal groove of the mandibular first molar. Its stable eruption and position establish the posterior molar relationship.
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Maximum contact between occlusal surfaces, of maxillary and mandibular teeth occur during________________?
Curve passing through the buccal and lingual cusp tips of the mandibular buccal teeth is______________?
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In the intercuspal position, the lingual cusp of maxillary 2nd premolar contacts the______________?
In centric occlusion, the cusp tip of the maxillary canine is in alignment with which mandibular tooth_____________?
When a molar has no opposing tooth, it can become_______________?