Hello, this is Dr. Rowe...let me see if I can be of assistance. You were told correctly to wait 4-10 months to allow proper bone growth and regeneration before having your implant done. I usually have my patients wait a minimum of 4 months and preferably 6 months before initiating an implant placement. Just eat healthy to stimulate proper bone growth; I usually urge my patients to take a daily multi-vitamin. As far as the continued hot/cold sensitivity on your crown, i sounds to me like you might need a root canal in that tooth also, inflamation of the pulp/nerve of the tooth (pulpitis) is only remedied by a root canl and not Sensodyne. If I can be of anymore help, please let me know.
Is there a specific reason to not performing a root canal before a crown is placed? I will not be happy is there is no difference, especially when this could have been done while my mouth was wide open. Thank you again.