Conventional hedonic analysis measures willingness to pay for attributes on the basis of marginal fixed costs. We argue that in many cases variable costs are also affected by these attributes and that this should be taken into account. We develop a simple model to show that the marginal willingness to pay for a quality attribute has to be equal to the full marginal cost, which includes marginal...

background: the differences between marginal gingiva and interdental papilla may be due to variation in the molecular composition of these two different anatomical structures. the aim of this study was to evaluate the staining intensity of fibronectin in human marginal gingiva and interdental papilla. materials and methods: in a prospective analytical study, 16 healthy subjects needing crown le...