Topography of the bony region of the mandibular mandible in connection with its resection by the method of Prof. P.M. Krasin

Surgical methods of access to the oral cavity in order to remove tongue cancer can be divided into 5 groups: the first group includes methods of penetration through the natural mouth opening, especially with the use of auxiliary methods (undercutting of the frenulum, ligature through the tongue to extract it outwards, use of Whithead's mirror): to the second group belong those methods, where the way goes through the mouth, but with an additional incision across the cheek (methods of laeger's Naufelder, Mausonenveer); to the third group may be included those where to the plumb incision of soft parts of the lower lip is joined the transverse sawing of the lower jaw (methods Roux, Sedillot, Syme, Billroth'a, Langenbeck-Bergmann'a): To the fourth group I refer methods with access through the soft parts of the floor of the mouth (methods of Vernuel, Regnoli, Siamatei, Czerny-Billrich); finally, to the fifth group we can refer combined methods, where access goes through the incision of soft parts of the lower lip, neck, floor of the mouth with sawing of the lower jaw (methods of Kosher, Kornelin and Orlov).