Dirk Hannemann

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ii ABSTRACT Long dismissed as unscientific, teleological explanation has been undergoing something of a revival as a result of the emergence of self-organization theory, which combines micro-level dynamics with macro-level boundary conditions to explain the tendency of systems to develop toward stable end-states. On that methodological basis this article(More)
The effect of new, automatic tooth cleaning instruments on tooth surface and surfaces and margins of amalgam and composite fillings were studied by profilometric measurements and SEM and compared with each other. On the surfaces of teeth and fillings, in particular at the margins, ultrasound treatment resulted in the significantly highest maximum roughness(More)
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