Hybrid bridges [fixed detachable] have presented some problems over the years with gingival hyperplasia due to excessive pressure from the gingival surface of the bridge. The tissue swells up and upon removing the bridge one can see the imprint of the bridge with hyper plastic tissue in some areas on the perimeter. When placing the bridge there is no evidence of excessive pressure and no feedback from the patient. Pressure indicating paste is also negative. My conclusion is that the quality of the gingival surface that consists of denture acrylic is most likely the culprit of the problem. Obviously one tries to achieve the best adaptation to avoid food traps. Does anyone have any comments on how to avoid this complication?