The angular bone defect and its relationship to trauma from occlusion and downgrowth of subgingival plaque

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Abstract
Sixty‐four sets of human teeth were collected with the aim of evaluating the role of trauma from occlusion in the etiology of destructive periodontal disease. Before the jaws were taken out, a careful bite analysis was carried out. After fixation of the jaws, impressions were taken and plaster of Paris models were made. Finally, a set of 14 radiographs were taken. On the baqis of the “clinical” records postmortem, the study models and the radiographs, the jaws were sectioned. Only mesio‐distal sections were included in the present analysis. The total number of interdental spaces examined was 106. The following observations were made;