[Adhesive bridge and marginal periodontium--results of a prospective study after a period of wear of 2-3 years].

After a period of wear of 2-3 years in 48 adhesive bridges periodontal criteria (SBI and PI) were determined around the abutment teeth and compared with the condition before the insertion of the restaurations. Significant increase in the index values on the oral side of these abutment teeth was found out. Here the distance from the gingiva to the margin of restaurations was smaller than 1 mm.