QUESTION TEXT: Dental researcher: Filling a cavity in a…
QUESTION TYPE: Principle – Strengthen
CONCLUSION: Dentists shouldn’t fill cavities unless the tooth’s nerves are at immediate risk.
REASONING: Filling a cavity hurts healthy parts of a tooth. Cavities are only dangerous if the decay reaches the nerve.
ANALYSIS: This isn’t quite a good argument. The dental researcher hasn’t shown that the harm caused by a filling outweighs the benefits of fixing a cavity even when danger to the nerve is less imminent.
___________
- This doesn’t help. A filling will always cause immediate damage, even if a nerve is in imminent danger.
- This doesn’t tell a dentist what to do when a cavity is present.
- CORRECT. Cavities are only potentially harmful unless the nerve is in danger. This tells us not to fix cavities until the nerve is at risk, because cavities always cause harm.
- Fillings provide more than temporary relief. And cavities aren’t progressive. They post no danger until they reach the nerve.
- Cavities are potentially harmful, so this weakens the argument.
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