When does the dentist take Xrays?

Your dentist can only examine those areas of your teeth which are readily visible in the mouth. He cannot see, for example, see between your teeth where decay usually starts. Nor can he see under fillings or inside the jawbones where the roots are. Xray pictures are used in these cases and quite often reveal problems that were never suspected beforehand - a prime example being impacted or buried wisdom teeth.

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