title: Situational analysis of the type and degree of resorption of the interdental septum of teeth with approximal amalgam restorations.
abstract: OBJECTIVE
  The aim of the study was to determine radiographically the type and degree of resorption of the interdental septum of teeth with approximal amalgam restorations in various iatrogenic clinical situations.
  
  
  METHODS
  Situational analysis of the type and degree of resorption of the interdental septum was performed in 757 approximal amalgam restorations of Class II cavities (according to Black). Intraoral periapical retroalveolar radiographs were used for that purpose. The condition of the septum was investigated in restorations with correct shape, in restorations with a poorly restored anatomical form, unsatisfactory marginal adaptation, as well in restorations with no proximal contact with the adjacent tooth.
  
  
  RESULTS
  The horizontal type of interdental septum resorption was the predominant type in all study groups. Restorations with poor anatomical form showed considerably higher incidence of vertical type of resorption in comparison with correctly shaped fillings. Similarly, restorations with unsatisfactory marginal adaptation demonstrated higher incidence of the disproportionate type of resorption than in the accurately formed group. A greater degree of resorption of the interdental septum was observed in restorations with incorrect anatomical form, with unsatisfactory marginal adaptation and with no contact with the adjacent tooth.
  
  
  CONCLUSIONS
  The observed changes can be explained by the presence of significant, long-standing retention of bacterial plaque, as well as by the additional trauma caused while eating and maintaining personal oral hygiene.
authors.affiliation: Department of Periodontology and Oral Medicine, Faculty of Dentistry, Medical University, Plovdiv, 15A Vassil Aprilov St., 4002 Plovdiv, Bulgaria.
authors.forename: Elka V
authors.initials: EV
authors.lastname: Popova
authors.forename: Snezhana Ts
authors.initials: STs
authors.lastname: Tsanova
mesh_terms: D000328:Adult; D001862:Bone Resorption / Q000000981:diagnostic imaging*; D016009:Chi-Square Distribution; D003723:Dental Amalgam; D018772:Dental Marginal Adaptation; D003793:Dental Restoration, Permanent / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography
chemical_list: D003723:Dental Amalgam