Prosthodontics & Occlusion · single question
Where is the contact point between the distal surface of tooth #8 and the mesial surface of tooth #9?
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Correct answer: C. Between the middle third and incisal third
The contact between the distal of #8 and mesial of #9 (maxillary central incisors) is at the junction of the middle and incisal thirds.
- A. ❌ Cervical-middle junction contact describes posterior premolars and molars.
- B. ❌ Middle third alone is not precise.
- C. ✅ CORRECT – Contact of maxillary central incisors is at the middle-incisal third junction.
- D. ❌ Incisal third alone is not precise; it spans the middle-incisal junction.
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