When tooth decay destroys subgingival part of the root it complicates treatment process. Edge of restorations (fillings, inlays, crowns) after treatment of the tooth must be located above or at the level of gum for restoration was hermetic. Furthermore, the edge of restoration always contains microcracks, in which there are microorganisms that cause inflammation of the gums. The location of this region under the gum leads to inflammation of the gums and expose the tooth root. In order to restore a tooth, Endodontists in Louisiana carry out surgery to lengthen the tooth crowns, in which part of the root that is located under the gums increases.