You'll find hundreds of files on cleft lip, cleft palate here on widesmiles.org.
This one is about: Missing Teeth on Lower Jaw
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>I don't know if the lower jaw is linked in anyway to cleft palate--Are Cleft
>Affected (CA) people also susceptible to missing teeth on the lower jaw?
We have data (as do others) that the bottom jaw IS affected, or different, in CA individuals (identical twins of which one was CA other twin non-CA). It is slightly smaller and the back portion, or angle, is not as square. It has also been shown that CA individuals are MORE LIKELY than non-CA to be missing teeth outside the cleft area. This means there is no direct connection, but the odds are greater you will be missing teeth if you are CA than non-CA. The connection is not presently known (but is being studied).
Kirt Simmons DDS, PhD