THE ANATOMICAL AND TOPOGRAPHICAL VARIABILITY OF THE INCISIVE CANAL IN HUMAN DEPENDING AT BONE PALATE TYPE

Abstract

Information on the size, anatomy and topography of the incisive canal is necessary to prevent complications during reconstructive operations in the anterior part of maxilla. The aim of the study was to study the variant anatomy and topography of the incisive canal depending on the type of bone palate. The objects of the study were computed tomograms of 174 adult people of both sexes from the age of 21 to 35 years (80 men and 94 women). The objects of study were divided into groups of leptostaphilia, mesostaphilia and brachistaphilia depending on the value of the palatine index of the face. On cone-radial computed tomograms were measured the number of nasal and incisive openings, their size and shape, the distance from the incisive opening to the labial-lower and palatine-lower points of the alveolar process and the anterior teeth of the upper jaw, the length, shape, type and angles of the incisal canal, the distance from the incisive canal to the tops of the roots of the upper incisors and canines, the thickness of the bone tissue anteriorly to the incisive canal. It was established that the sizes of the nasal and incisive openings, the length of the incisive canal were greater in men, and the distances from the incisal opening to the labial-lower and palatine-lower points of the alveolar process - in women. The length of the incisal canal in individuals of the leptostaphilia group is greater than in individuals of the brachistaphilia group. The thickness of the alveolar bone from the labial wall of the incisive canal to the vestibular cortical plate of the alveolar process at the level of the palatine and middle third of the length of the incisive canal in individuals with brachistaphilia is greater than in individuals with leptostaphilia. The angle of inclination of the incisal canal relative to the plane of the bone part of palate in individuals with brachistaphilia is greater than in individuals with leptostaphilia, and relatively the long axis of the alveolar bone, on the contrary, is smaller. Thus, the incisor canal in adults has a pronounced individual variability in size, shape and topography, depending on the type of bone palate and sex.