Current dental adhesive technology involves either an etch-and-rinse or self-etching approach.8 Evidence of clinical durability exists for both approaches, albeit depending on the specific brand.4,5 Today, enamel still requires phosphoric-acid etching and thus an etch-andrinse approach to obtain a durable bond. The adhesiveenamel bond seals the cavity and even protects the more vulnerable bond ...

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this paper presents a theoretical model in order to determine tile expected rate of durable good`s supply over time. the social plaliner maximizes tile sum of the discount ed net benefit. subject to the stochastic fluctuation in the stock of durable goods. it turns out that a social planner increases the expected rate of supply since uncertainty increases the user's loss from the view poin...

Consumption is the principal feature of Iran’s Gross National Production. Therefore, recognizing of factors that influence it is quite crucial. This article, investigates habit formation, durability, relative risk aversion and intertemporal substitution in consumption expenditures of Iranian households. For empirical study, at first, we constructed two weighted portfolio of the main assets re...