Pathological Migration Associated with Loss Of Posterior Teeth

Many evidences are available on tooth positional changes following loss of an adjacent tooth but only few studies are available on the investigation of tooth, positional changes adjacent to the site of posterior tooth loss attempts to provide increased understanding of magnitude direction and associated features that may be helpful in decision making and treatment planning.In case of vertical positional changes such as supra eruption, The anatomy of the supraerupted tooth may have prognostic implications where active eruption is encountered. In teeth with root furcation, these may become exposed, and create plaque traps which may compromise the periodontal health. Exposure to the root surface may also precipitate pulpal sensitivity, root caries and create aesthetic compromise. In case of horizontal positional changes such as migration, tipping, rotation of adjacent tooth leads to reduction in space or interocclusal clearance for placement of a replacement tooth, this leads to angulation of abutment teeth, Changes in occlusal loading, Poor embrasure contour around pontic. Obviously, change in the position of the tooth crown is clinically visible, but the changes in position of the root and therefore the apex may be of clinical relevance. Tipping may increase the proximity of roots of adjacent teeth and other anatomical structures. Changes in root position may also affect the interdental space available for implant placement and make it more difficult owing to changes in relative anatomical position. Thus the aim of the study is to evaluate the pathological changes associated with posterior tooth loss.