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  • <p>X-ray examination is the first opportunity a dentist has to evaluate a tooth's root canal system.</p><p>In this example, we're looking at a lower 1st molar.</p>
     

    X-ray examination is the first opportunity a dentist has to evaluate a tooth's root canal system.

    In this example, we're looking at a lower 1st molar.

  • <p>It's easy to see that the root labeled "b" has two distinct canals.</p><p>However, lower on down it's hard to ascertain whether they coalesce into a single canal or remain separate.</p><p>This tooth root is well known for having two distinct canals, so it's probably the latter case.</p>
     

    It's easy to see that the root labeled "b" has two distinct canals.

    However, lower on down it's hard to ascertain whether they coalesce into a single canal or remain separate.

    This tooth root is well known for having two distinct canals, so it's probably the latter case.

  • <p>The root labeled "a" appears to have a large single canal, which is the usual configuration.</p><p>However, on an x-ray two separate canals (a common variant for this root) may be overlapped and give the impression of just a single one.</p><p>Taking a second x-ray, at a different angle, can help a dentist make an accurate determination.</p>
     

    The root labeled "a" appears to have a large single canal, which is the usual configuration.

    However, on an x-ray two separate canals (a common variant for this root) may be overlapped and give the impression of just a single one.

    Taking a second x-ray, at a different angle, can help a dentist make an accurate determination.

Topic Root Canal Treatment