[Analysis of stresses in modified resin-bonded cast fixed partial dentures]

In 1973, ROCHETTE introduced a periodontal splinting method that involved bonding of cast perforated retainers to the acid etched lingual surfaces of anterior teeth, using a resin. Nowadays, there have been a number of reports on the clinical performance of the adhesive bridges. The objective of this investigation was to photoelastically evaluate the forces exerted on the supporting structures of abutment teeth by modified resin-bonded cast fixed partial dentures. Four modified designs were tested and a traditional fixed bridge used as a control design. This study indicated that the resin bonded cast fixed partial denture with the lingual chamfer margin and mesial rest was the design to be chosen.