You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Apexogenesis of incompletely formed root is: and explain in detail?
APEXOGENESIS
Apexogenesis is a treatment designed to preserve vital pulp tissue in the apical part of a root canal so that formation of the root apex may be completed.
Because of the depth at which this procedure is performed, preference has usually been given to the use of Ca(OH)2 rather than MTA because, in the event of failure, this may facilitate reentry to the root canal to perform apexification or pulp regeneration. Also, if apexogenesis is successful and root-end formation is complete, the tooth could be reentered if desired for  conventional root canal treatment. It is unclear whether these concerns hold true in an era of microscopy and contemporary microinstrumentation.