Tooth 3.6 has had root canal treatment and has lost both marginal ridges (MOD access). What is the most appropriate definitive restoration?
- Correct answer
A cuspal-coverage restoration such as an onlay or crown
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An MOD amalgam without cuspal coverage
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An MOD glass ionomer restoration
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A post with an MOD composite restoration
This question is one of 15 in AFK practice: Restorative, prosthodontics and implants. Test yourself on all of them.
Practice quiz FlashcardsExplanations
Loss of both marginal ridges with an access cavity greatly weakens the cusps of a posterior tooth, and cuspal coverage protects them from fracture. A post does not reinforce a tooth; it only retains a core.
Source: Rosenstiel, Land and Walter, Contemporary Fixed Prosthodontics — oneguy
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