Thanks for putting up your question on Just Answer.
a) What is happening here?
- Your wife has : "Supernumerary teeth". These are extra teeth over and above the 32 teeth that either erupt or stay within the jaw bone . It is an extremely common condition and potentially harmless. This is a hereditary condition, which is also associated with "True Partial Anodontia" , where some adult teeth simply do not develop. However, this has to be differentiated from False Partial Anodontia, where some adult teeth have simply failed to erupt. A simple panoramic X rays can differentiate the two. Your daughter has either of these two.
b)Sue and I are both of the mind to let nature take it's course. What is your opinion?
- For your wife: if the tooth that has been found under the root canaled tooth is not going to exert pressure on the root canaled tooth, then it can be left alone. However, if it starts to push the root canaled toth, then the supernumerary tooth may have to be removed.
c) What lies ahead for our daughter?
- First of all, a panoramic X ray is required to make the correct Anodontia diagnosis. If it is true anodontia, she will need prosthetic teeth (bridges, implants, flippers). if it is false anodontia, you will need an orthodontic and oral Surgeon consultation, to see if the teeth can be made to erupt.
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Good Luck !